How do roots penetrate strong soil?

Clark, L. J., Whalley, W. R. and Barraclough, P. B. 2003. How do roots penetrate strong soil? Plant and Soil. 255, pp. 93-104.

Related outputs

Exploring the plant and soil mechanisms by which crop rotations benefit farming systems

A - Papers appearing in refereed journals

Malik, A. I., Bell, R., Zang, H., Boitt, G. and Whalley, W. R. 2024. Exploring the plant and soil mechanisms by which crop rotations benefit farming systems. Plant and Soil. https://doi.org/10.1007/s11104-024-06994-z

Soil Mechanical Resistance and Root Growth and Function

B - Book chapters etc edited externally

Whalley, W. R., Bengough, A. G., Hawkesford, M. J., Mooney, S. J., Bennett, M. J. and Pandey, B. K. 2024. Soil Mechanical Resistance and Root Growth and Function. in: Beeckman, T. and Eshel, A. (ed.) Plant Roots – The Hidden Half Taylor & Francis. pp. 415-432

The pore-rhizosheath shapes maize root architecture by enhancing root distribution in macropores

A - Papers appearing in refereed journals

Liu, L., Qin, S., Whalley, W. R., Zhou, H., Ren, T. and Gao, W. 2024. The pore-rhizosheath shapes maize root architecture by enhancing root distribution in macropores. Plant, Cell and Environment. pp. 1-12. https://doi.org/10.1111/pce.14915

The effects of soil compaction on wheat seedling root growth are specific to soil texture and soil moisture status

A - Papers appearing in refereed journals

Yu, C., Mawodza, T., Atkinson, B. S., Atkinson, J. A., Sturrock, C. J., Whalley, W. R., Hawkesford, M. J., Cooper, H., Zhang, X., Zhou, H. and Mooney, S. J. 2024. The effects of soil compaction on wheat seedling root growth are specific to soil texture and soil moisture status. Rhizosphere. 29, p. 100838. https://doi.org/10.1016/j.rhisph.2023.100838

Root phenotyping and root water uptake calculation using soil water contents measured in a winter wheat field

A - Papers appearing in refereed journals

Huang, Z., Zhang, X., Ashton, R. W., Hawkesford, M. J. and Whalley, W. R. 2023. Root phenotyping and root water uptake calculation using soil water contents measured in a winter wheat field. Agricultural Water Management. 290, p. 108607. https://doi.org/10.1016/j.agwat.2023.108607

Soil structure has a greater effect on the rooting of wheat (Triticum aestivum L.) than nitrogen fertilisation rate or genotype.

A - Papers appearing in refereed journals

Mawodza, T., Zhou, H., Atkinson, B. S., Atkinson, J. A., Sturrock, C. J., Riche, A. B., Whalley, W. R., Hawkesford, M. J., Cooper, H. V. and Mooney, S. J. 2023. Soil structure has a greater effect on the rooting of wheat (Triticum aestivum L.) than nitrogen fertilisation rate or genotype. Rhizosphere. 27 (Sept), p. 100770. https://doi.org/10.1016/j.rhisph.2023.100770

Soil structure has a greater effect on the rooting of wheat (Triticum aestivum L.) than nitrogen fertilisation rate or genotype

A - Papers appearing in refereed journals

Mawodza, T., Zhou, H., Atkinson, B. S., Atkinson, J. A., Sturrock, C. J., Riche, A. B., Whalley, W. R., Hawkesford, M. J., Cooper, H. and Mooney, S. J. 2023. Soil structure has a greater effect on the rooting of wheat (Triticum aestivum L.) than nitrogen fertilisation rate or genotype. Rhizosphere. 27, p. 100770. https://doi.org/10.1016/j.rhisph.2023.100770

Does no-tillage mitigate the negative effects of harvest compaction on soil pore characteristics in Northeast China?

A - Papers appearing in refereed journals

Tian, M., Whalley, W. R., Zhou, H., Ren, T. and Gao, W. 2023. Does no-tillage mitigate the negative effects of harvest compaction on soil pore characteristics in Northeast China? Soil & Tillage Research. 233, p. 105787. https://doi.org/10.1016/j.still.2023.105787

Changes in soil surface properties under simulated rainfall and the effect of surface roughness on runoff, infiltration and soil loss

A - Papers appearing in refereed journals

Bahddou, S., Otten, W., Whalley, W. R., Shin, H., El Gharous, M. and Rickson, R. J. 2023. Changes in soil surface properties under simulated rainfall and the effect of surface roughness on runoff, infiltration and soil loss. Geoderma. 431, p. 116341. https://doi.org/10.1016/j.geoderma.2023.116341

An overlooked mechanism underlying the attenuated temperature response of soil heterotrophic respiration

A - Papers appearing in refereed journals

Zhang, X., Whalley, P. A., Gregory, A. S., Whalley, W. R., Coleman, K., Neal, A. L., Mooney, S. J., Soga, K. and Illangasekare, T. H. 2022. An overlooked mechanism underlying the attenuated temperature response of soil heterotrophic respiration. Journal of the Royal Society Interface. 19 (192), p. 20220276. https://doi.org/10.1098/rsif.2022.0276

Changes of soil structure under different tillage management assessed by bulk density, penetrometer resistance, water retention curve, least limiting water range and X-ray computed tomography

A - Papers appearing in refereed journals

Tian, M., Qin, S., Whalley, W. R., Zhou, H., Ren, T. and Gao, W. 2022. Changes of soil structure under different tillage management assessed by bulk density, penetrometer resistance, water retention curve, least limiting water range and X-ray computed tomography. Soil & Tillage Research. 221, p. 105420. https://doi.org/10.1016/j.still.2022.105420

Complementary protein extraction methods increase the identification of the Park Grass Experiment metaproteome

A - Papers appearing in refereed journals

Quinn, G. A., Abdelhameed, A., Banat, I. M., Berra, D., Doerr,S. H., Dudley, E., Francis, L. W., Gazze, S. A., Hallin, I., Matthews, G. P., Swain, M. T., Whalley, W. R. and Van Keulena, G. 2022. Complementary protein extraction methods increase the identification of the Park Grass Experiment metaproteome. Applied Soil Ecology. 173, p. 104388. https://doi.org/10.1016/j.apsoil.2022.104388

Localized nutrient supply can facilitate root proliferation and increase nitrogen-use efficiency in compacted soil

A - Papers appearing in refereed journals

Wu, X., Li, H., Rengel, Z., Whalley, W. R., Li, H., Zhang, F., Shen, J. and Jin, K. 2022. Localized nutrient supply can facilitate root proliferation and increase nitrogen-use efficiency in compacted soil. Soil & Tillage Research. 215 (January), p. 105198. https://doi.org/10.1016/j.still.2021.105198

On the improved Brutsaert's model to estimate the soil water content by measuring P-wave and S-wave speeds: A commentary on Xu et al. (2020)

A - Papers appearing in refereed journals

Shin, H. C. and Whalley, W. R. 2021. On the improved Brutsaert's model to estimate the soil water content by measuring P-wave and S-wave speeds: A commentary on Xu et al. (2020). Geoderma. 402 (15 November), p. 115335. https://doi.org/10.1016/j.geoderma.2021.115335

Determination of wheat spike and spikelet architecture and grain traits using X-ray Computed Tomography imaging

A - Papers appearing in refereed journals

Zhou, H., Riche, A. B., Hawkesford, M. J., Whalley, W. R., Atkinson, B. S., Sturrock, C. J. and Mooney, S. J. 2021. Determination of wheat spike and spikelet architecture and grain traits using X-ray Computed Tomography imaging. Plant Methods. 17 (article), p. 26. https://doi.org/10.1186/s13007-021-00726-5

The interaction between wheat roots and soil pores in structured field soil

A - Papers appearing in refereed journals

Zhou, H., Whalley, W. R., Hawkesford, M. J., Ashton, R. W., Atkinson, B., Atkinson, J. A., Sturrock, C. J., Bennett, M. J. and Mooney, S. J. 2021. The interaction between wheat roots and soil pores in structured field soil. Journal of Experimental Botany. 72 (2), pp. 747-756. https://doi.org/10.1093/jxb/eraa475

Characteristics of soil organic matter within an erosional landscape under agriculture in Northeast China: stock, source, and thermal stability

A - Papers appearing in refereed journals

Zhang, W., Gregory, A. S., Whalley, W. R., Ren, T. and Gao, W. 2021. Characteristics of soil organic matter within an erosional landscape under agriculture in Northeast China: stock, source, and thermal stability. Soil & Tillage Research. 209, p. 104927. https://doi.org/10.1016/j.still.2020.104927

Plant roots sense soil compaction through restricted ethylene diffusion

A - Papers appearing in refereed journals

Pandey, B. K., Huang, G., Bhosale, R., Hartman, S., Sturrock, C., Jose, L., Martin, O. C., Karady, M., Voesenek, L. A. C. J., Ljung, K., Lynch, J. P., Brown, K. M, Whalley, W. R., Mooney, S. J., Zhang, D. and Bennett, M. J. 2021. Plant roots sense soil compaction through restricted ethylene diffusion. Science - AAAS. 371 (6526), p. 276–280. https://doi.org/10.1126/science.abf3013

Advances in understanding of nitrogen (N) uptake by plant roots

B - Book chapters etc edited externally

Hawkesford, M. J. and Whalley, W. R. 2021. Advances in understanding of nitrogen (N) uptake by plant roots. in: Gregory, P. (ed.) Understanding and improving crop root function UK Burleigh Dodds.

The effect of organic carbon content on soil compression characteristics

A - Papers appearing in refereed journals

Suravi, K., Attenborough, K., Taherzadeh, S., Macdonald, A. J., Powlson, D. S., Ashton, R. W., Suravi, K. N. and Whalley, W. R. 2021. The effect of organic carbon content on soil compression characteristics. Soil & Tillage Research. 209 (May), p. 104975. https://doi.org/10.1016/j.still.2021.104975

Relationship between soil carbon sequestration and the ability of soil aggregates to transport dissolved oxygen

A - Papers appearing in refereed journals

Zhang, X., Gregory, A. S., Whalley, W. R., Coleman, K., Neal, A. L., Bacq-Labreuil, A., Mooney, S. J., Crawford, J. W., Soga, K. and Illangasekare, T. H. 2021. Relationship between soil carbon sequestration and the ability of soil aggregates to transport dissolved oxygen. Geoderma. 403, p. 115370. https://doi.org/10.1016/j.geoderma.2021.115370

Wheat growth responses to soil mechanical impedance are dependent on phosphorus supply

A - Papers appearing in refereed journals

Wang, X., Shen, J., Hedden, P., Phillips, A. L., Thomas, S. G., Ge, Y., Ashton, R. W. and Whalley, W. R. 2021. Wheat growth responses to soil mechanical impedance are dependent on phosphorus supply. Soil & Tillage Research. 205, p. 104754. https://doi.org/10.1016/j.still.2020.104754

Time-lapse geophysical assessment of agricultural practices on soil moisture dynamics

A - Papers appearing in refereed journals

Blanchy, G., Watts, C. W., Richards, J., Bussell, J., Huntenburg, K., Sparkes, D. L., Stalham, M., Hawkesford, M. J., Whalley, W. R. and Binley, A. 2020. Time-lapse geophysical assessment of agricultural practices on soil moisture dynamics. Vadose Zone Journal. 19 (1), p. e20080. https://doi.org/10.1002/vzj2.20080

Accounting for heterogeneity in the 𝛉–𝛔 relationship: Application to wheat phenotyping using EMI

A - Papers appearing in refereed journals

Blanchy, G., Watts, C. W., Ashton, R. W., Webster, C. P., Hawkesford, M. J., Whalley, W. R. and Binley, A. 2020. Accounting for heterogeneity in the 𝛉–𝛔 relationship: Application to wheat phenotyping using EMI. Vadose Zone Journal. 19 (1), p. e20037. https://doi.org/10.1002/vzj2.20037

Sustainable Cropping Requires Adaptation to a Heterogeneous Rhizosphere

A - Papers appearing in refereed journals

Wang, X., Whalley, W. R., Miller, A. J., White, P. J., Zhang, F. and Shen, J. 2020. Sustainable Cropping Requires Adaptation to a Heterogeneous Rhizosphere. Trends in Plant Science. 25 (12), pp. 1194-1202. https://doi.org/10.1016/j.tplants.2020.07.006

Time-intensive geoelectrical monitoring under winter wheat

A - Papers appearing in refereed journals

Blanchy, G., Virlet, N., Sadeghi-Tehran, P., Watts, C. W., Hawkesford, M. J., Whalley, W. R. and Binley, A. 2020. Time-intensive geoelectrical monitoring under winter wheat . Near Surface Geophysics. https://doi.org/10.1002/nsg.12107

Physical properties of a sandy soil as affected by incubation with a synthetic root exudate - strength, thermal and hydraulic conductivity, and evaporation

A - Papers appearing in refereed journals

Zhang, W., Gao, W., Whalley, W. R. and Ren, T. 2020. Physical properties of a sandy soil as affected by incubation with a synthetic root exudate - strength, thermal and hydraulic conductivity, and evaporation. European Journal of Soil Science. pp. 1-11. https://doi.org/10.1111/ejss.13007

A comparison between water uptake and root length density in winter wheat: effects of root density and rhizosphere properties

A - Papers appearing in refereed journals

Whalley, W. R., Zhang, X., Whalley, P. A., Ashton, R. W., Evans, J., Hawkesford, M. J., Griffiths, G., Huang, Z. D., Zhou, H. and Mooney, S. J. 2020. A comparison between water uptake and root length density in winter wheat: effects of root density and rhizosphere properties . Plant and Soil. 451, pp. 345-356. https://doi.org/10.1007/s11104-020-04530-3

A novel approach to estimate soil penetrometer resistance from water content, bulk density, and shear wave velocity: A laboratory study on a loamy sand soil

A - Papers appearing in refereed journals

Zhang, W., Gao, W., Ren, T. and Whalley, W. R. 2020. A novel approach to estimate soil penetrometer resistance from water content, bulk density, and shear wave velocity: A laboratory study on a loamy sand soil. Geoderma. 368 (1 June), p. 114276. https://doi.org/10.1016/j.geoderma.2020.114276

Soil strength influences wheat root interactions with soil macropores

A - Papers appearing in refereed journals

Atkinson, J. A., Hawkesford, M. J., Whalley, W. R., Zhou, H. and Money, S. J. 2019. Soil strength influences wheat root interactions with soil macropores. Plant, Cell and Environment. pp. 1-11. https://doi.org/10.1111/pce.13659

Multiple abiotic stress, nitrate availability and the growth of wheat

A - Papers appearing in refereed journals

Ge, Y., Hawkesford, M. J., Rosolem, C. A., Mooney, S. J., Ashton, R. W., Evans, J. and Whalley, W. R. 2019. Multiple abiotic stress, nitrate availability and the growth of wheat . Soil & Tillage Research. 191 (August), pp. 171-184. https://doi.org/10.1016/j.still.2019.04.005

The role of plant species and soil condition in the structural development of the rhizosphere

A - Papers appearing in refereed journals

Helliwell, J. R., Sturrock, C. J., Miller, A. J., Whalley, W. R. and Mooney, S. J. 2019. The role of plant species and soil condition in the structural development of the rhizosphere. Plant, Cell and Environment. 42 (6), pp. 1974-1986. https://doi.org/10.1111/pce.13529

The relationships between seedling root screens, root growth in the field and grain yield for wheat

A - Papers appearing in refereed journals

Bai, C., Ge, Y., Ashton, R. W., Evans, J., Milne, A. E., Hawkesford, M. J., Whalley, W. R., Parry, M. A. J., Melichar, J., Feuerhelm, D., Bansept, P. and Bartsch, M. 2019. The relationships between seedling root screens, root growth in the field and grain yield for wheat . Plant and Soil. https://doi.org/10.1007/s11104-019-04088-9

Shrinkage characteristics of lime concretion black soil as affected by biochar amendment

A - Papers appearing in refereed journals

Wei, C., Gao, W., Whalley, W. R. and Li, B. 2018. Shrinkage characteristics of lime concretion black soil as affected by biochar amendment. Pedosphere. 28 (5), pp. 713-725. https://doi.org/10.1016/S1002-0160(18)60041-4

Improved Interpretation of Mercury Intrusion and Soil Water Retention Percolation Characteristics by Inverse Modelling and Void Cluster Analysis

A - Papers appearing in refereed journals

Matthews, G. P., Levy, C. L., Laudone, G. M., Jones, K. L., Ridgway, C. J., Hallin, I. L., Gazze, S. A., Francis, L., Whalley, W. R., Schoelkopf, J. and Gane, P. A. C. 2018. Improved Interpretation of Mercury Intrusion and Soil Water Retention Percolation Characteristics by Inverse Modelling and Void Cluster Analysis. Transport In Porous Media. https://doi.org/10.1007/s11242-018-1087-1

The effect of microbial activity on soil water diffusivity

A - Papers appearing in refereed journals

Choudhury, B. U., Ferraris, S., Ashton, R. W., Powlson, D. S. and Whalley, W. R. 2018. The effect of microbial activity on soil water diffusivity. European Journal of Soil Science. 69 (3), pp. 407-413. https://doi.org/10.1111/ejss.12535

A novel dielectric tensiometer enabling precision PID-based irrigation control of polytunnel-grown strawberries in coir

A - Papers appearing in refereed journals

Goodchild, M. S., Jenkins, M. D., Whalley, W. R. and Watts, C. W. 2018. A novel dielectric tensiometer enabling precision PID-based irrigation control of polytunnel-grown strawberries in coir. Biosystems Engineering. 165 (January), pp. 70-76. https://doi.org/10.1016/j.biosystemseng.2017.10.018

Effect of soil saturation on denitrification in a grassland soil

A - Papers appearing in refereed journals

Cardenas, L. M., Bol, R., Lewicka-Szczebak, D., Gregory, A. S., Matthews, G. P., Whalley, W. R., Misselbrook, T. H., Scholefield, D. and Well, R. 2017. Effect of soil saturation on denitrification in a grassland soil. Biogeosciences. 14 (20), pp. 4691-4710. https://doi.org/10.5194/bg-14-4691-2017

Effect of microbial activity on penetrometer resistance and elastic modulus of soil at different temperatures

A - Papers appearing in refereed journals

Gao, W., Muñoz-Romero, V., Ren, T., Ashton, R. W., Morin, M., Clark, I. M., Powlson, D. S. and Whalley, W. R. 2017. Effect of microbial activity on penetrometer resistance and elastic modulus of soil at different temperatures. European Journal of Soil Science. 68 (4), pp. 412-419. https://doi.org/10.1111/ejss.12440

Shaping an Optimal Soil by Root–Soil Interaction

A - Papers appearing in refereed journals

Jin, K., White, P. J., Whalley, W. R., Shen, J. and Shi, L. 2017. Shaping an Optimal Soil by Root–Soil Interaction. Trends in Plant Science. 22 (10), pp. 823-829. https://doi.org/10.1016/j.tplants.2017.07.008

Methods to estimate changes in soil water for phenotyping root activity in the field

A - Papers appearing in refereed journals

Whalley, W. R., Binley, A., Watts, C. W., Shanahan, P., Dodd, I. C., Ober, E. S., Ashton, R. W., Webster, C. P., White, R. P. and Hawkesford, M. J. 2017. Methods to estimate changes in soil water for phenotyping root activity in the field. Plant and Soil. 415 (1-2), pp. 407-422. https://doi.org/10.1007/s11104-016-3161-1

The emergent rhizosphere: imaging the development of the porous architecture at the root-soil interface

A - Papers appearing in refereed journals

Helliwell, J. R., Sturrock, C. J., Mairhofer, S., Craigon, J., Ashton, R. W., Miller, A. J., Whalley, W. R. and Mooney, S. J. 2017. The emergent rhizosphere: imaging the development of the porous architecture at the root-soil interface. Scientific Reports. 7, p. 14875. https://doi.org/10.1038/s41598-017-14904-w

Enhanced Plant Rooting and Crop System Management for Improved N Use Efficiency

B - Book chapters etc edited externally

Rosolem, C. A., Ritz, K., Cantarella, H., Hawkesford, M. J., Whalley, W. R. and Mooney, S. J. 2017. Enhanced Plant Rooting and Crop System Management for Improved N Use Efficiency. in: Sparks, D. L. (ed.) Advances in Agronomy Vol.146 Academic Press Inc Elsevier Science.

Root growth in field-grown winter wheat: Some effects of soil conditions, season and genotype.

A - Papers appearing in refereed journals

Hodgkinson, L., Dodd, I. C., Binley, A., Ashton, R. W., White, R. P., Watts, C. W. and Whalley, W. R. 2017. Root growth in field-grown winter wheat: Some effects of soil conditions, season and genotype. European Journal of Agronomy. 91 (November), pp. 74-83. https://doi.org/10.1016/j.eja.2017.09.014

Increased soil phosphorus availability induced by faba bean root exudation stimulates root growth and phosphorus uptake in neighbouring maize

A - Papers appearing in refereed journals

Zhang, D. S., Zhang, C. C., Tang, X. Y., Li, H. G., Zhang, F-S., Rengel, Z., Whalley, W. R., Davies, W. J. and Shen, J. B. 2016. Increased soil phosphorus availability induced by faba bean root exudation stimulates root growth and phosphorus uptake in neighbouring maize. New Phytologist. 209 (2), pp. 823-831. https://doi.org/10.1111/nph.13613

On the theory of Brutsaert about elastic wave speeds in unsaturated soils

A - Papers appearing in refereed journals

Shin, H., Whalley, W. R., Attenborough, K. and Taherzadeh, S. 2016. On the theory of Brutsaert about elastic wave speeds in unsaturated soils. Soil & Tillage Research. 156, pp. 155-165. https://doi.org/10.1016/j.still.2015.10.006

A simple model to predict soil penetrometer resistance as a function of density, drying and depth in the field

A - Papers appearing in refereed journals

Gao, W. D., Whalley, W. R., Tian, Z. C., Liu, J. and Ren, T. S. 2016. A simple model to predict soil penetrometer resistance as a function of density, drying and depth in the field. Soil & Tillage Research. 155, pp. 190-198. https://doi.org/10.1016/j.still.2015.08.004

Major crop species show differential balance between root morphological and physiological responses to variable phosphorus supply

A - Papers appearing in refereed journals

Lyu, Y., Tang, H. L., Li, H. G., Zhang, F-S., Rengel, Z., Whalley, W. R., Shen, J. B. and Stralia, V. P. 2016. Major crop species show differential balance between root morphological and physiological responses to variable phosphorus supply. Frontiers in Plant Science. 7. https://doi.org/10.3389/fpls.2016.01939

Effect of compaction on nitrous oxide and nitrogen emissions from UK soils

C1 - Edited contributions to conferences/learned societies

Cardenas, L. M., Matthews, G. P., Gregory, A. S., Whalley, W. R., Bird, N. R. A., Misselbrook, T. H., Laudone, G. M., Dhanoa, M. S. and Scholefield, D. 2016. Effect of compaction on nitrous oxide and nitrogen emissions from UK soils. Abstract for GGAA conferernce, Melbourne, 14-18 February, 2016.

Deep roots and soil structure

A - Papers appearing in refereed journals

Gao, W., Hodgkinson, L., Jin, K., Watts, C. W., Ashton, R. W., Shen, J., Ren, T., Dodd, I. C., Binley, A., Phillips, A. L., Hedden, P., Hawkesford, M. J. and Whalley, W. R. 2016. Deep roots and soil structure. Plant, Cell and Environment. 39 (8), pp. 1662-1668. https://doi.org/10.1111/pce.12684

Uniting genetics and chemistry to reduce the risk of take-all disease in 2nd wheat crops

C1 - Edited contributions to conferences/learned societies

Moughan, J., Mcmillan, V. E., Melichar, J., Ranner, D., Thornton, C., Whalley, W. R. and Hammond-Kosack, K. E. 2015. Uniting genetics and chemistry to reduce the risk of take-all disease in 2nd wheat crops. Abstracts 9th Symposium International Society for Root Research (ISRR) "Roots Down Under", Canberra, Australia, 6-9 Octomber, 2015. pp. P90

Exploring the susceptibility of cereal species to Phialophora fungi

C1 - Edited contributions to conferences/learned societies

Osborne, S., Mcmillan, V. E., Whalley, W. R., Foulkes, J. and Hammond-Kosack, K. E. 2015. Exploring the susceptibility of cereal species to Phialophora fungi. Abstracts Molecular Biology of Plant Pathogens Conference (MBPP), University of West England, Bristol, 8-9 April, 2015. pp. 56

The use of electromagnetic induction to monitor changes in soil moisture profiles beneath different wheat genotypes

A - Papers appearing in refereed journals

Shanahan, P. W., Binley, A., Whalley, W. R. and Watts, C. W. 2015. The use of electromagnetic induction to monitor changes in soil moisture profiles beneath different wheat genotypes. Soil Science Society of America Journal. 79, pp. 459-466. https://doi.org/10.2136/sssaj2014.09.0360

The effect of impedance to root growth on plant architecture in wheat

A - Papers appearing in refereed journals

Jin, K., Shen, J., Ashton, R. W., White, Robin P., Dodd, I. C., Phillips, A. L., Parry, M. A. J. and Whalley, W. R. 2015. The effect of impedance to root growth on plant architecture in wheat. Plant and Soil. 392, pp. 323-332. https://doi.org/10.1007/s11104-015-2462-0

Isotope fractionation factors controlling isotopocule signatures of soil-emitted N2O produced by denitrification processes of various rates

A - Papers appearing in refereed journals

Lewicka-Szczebak, D., Well, R., Bol, R., Gregory, A. S., Matthews, G. P., Misselbrook, T. H., Whalley, W. R. and Cardenas, L. M. 2015. Isotope fractionation factors controlling isotopocule signatures of soil-emitted N2O produced by denitrification processes of various rates. Rapid Communications in Mass Spectrometry. 29 (3), pp. 269-282. https://doi.org/10.1002/rcm.7102

Wheat root growth responses to horizontal stratification of fertiliser in a water-limited environment

A - Papers appearing in refereed journals

Jin, K., Shen, J., Ashton, R. W., White, Robin P., Dodd, I. C., Parry, M. A. J. and Whalley, W. R. 2015. Wheat root growth responses to horizontal stratification of fertiliser in a water-limited environment. Plant and Soil. 386, pp. 77-88. https://doi.org/10.1007/s11104-014-2249-8

Triaxial testing to determine the effect of soil type and organic carbon content on soil consolidation and shear deformation characteristics

A - Papers appearing in refereed journals

Chakraborty, D., Watts, C. W., Powlson, D. S., Macdonald, A. J., Ashton, R. W., White, Robin P. and Whalley, W. R. 2014. Triaxial testing to determine the effect of soil type and organic carbon content on soil consolidation and shear deformation characteristics. Soil Science Society of America Journal. 78, pp. 1192-1200. https://doi.org/10.2136/sssaj2014.01.0007

Quantifying the impact of microbes on soil structural development and behaviour in wet soils

A - Papers appearing in refereed journals

Helliwell, J. R., Miller, A. J., Whalley, W. R., Mooney, S. J. and Sturrock, C. J. 2014. Quantifying the impact of microbes on soil structural development and behaviour in wet soils. Soil Biology and Biochemistry. 74, pp. 138-147. https://doi.org/10.1016/j.soilbio.2014.03.009

Genotypic variation in the uptake, partitioning and remobilisation of nitrogen during grain-filling in wheat

A - Papers appearing in refereed journals

Barraclough, P. B., Lopez-Bellido, R. and Hawkesford, M. J. 2014. Genotypic variation in the uptake, partitioning and remobilisation of nitrogen during grain-filling in wheat. Field Crops Research. 156, pp. 242-248. https://doi.org/10.1016/j.fcr.2013.10.004

Modelling the path to better soil applied pesticides

C2 - Non-edited contributions to conferences

Sweeney, P., Travis, K., Whalley, W. R., Whitmore, A. P., Dailey, A. G., Wu, L., Van Beinum, W. and Brown, C. 2013. Modelling the path to better soil applied pesticides. Abstracts Conference on Pesticide Behaviour in Soils, Water and Air, York, 2-4 September 2013 .

How do roots elongate in a structured soil?

A - Papers appearing in refereed journals

Jin, K., Shen, J., Ashton, R. W., Dodd, I. C., Parry, M. A. J. and Whalley, W. R. 2013. How do roots elongate in a structured soil? Journal of Experimental Botany. 64, pp. 4761-4777. https://doi.org/10.1093/jxb/ert286

The involvement of gibberellin signalling in the effect of soil resistance to root penetration on leaf elongation and tiller number in wheat

A - Papers appearing in refereed journals

Coelho Filho, M. A., Colebrook, E. H., Lloyd, D. P. A., Webster, C. P., Mooney, S. J., Phillips, A. L., Hedden, P. and Whalley, W. R. 2013. The involvement of gibberellin signalling in the effect of soil resistance to root penetration on leaf elongation and tiller number in wheat. Plant and Soil. 371, pp. 81-94. https://doi.org/10.1007/s11104-013-1662-8

Measurement of the matric potential of soil water in the rhizosphere

A - Papers appearing in refereed journals

Whalley, W. R., Ober, E. S. and Jenkins, M. 2013. Measurement of the matric potential of soil water in the rhizosphere. Journal of Experimental Botany. 64, pp. 3951-3963. https://doi.org/10.1093/jxb/ert044

Soil mechanical resistance and root growth and function

B - Book chapters etc edited externally

Whalley, W. R. and Bengough, A. G. 2013. Soil mechanical resistance and root growth and function. in: Beeckman, T. and Eshel, A. (ed.) Plant roots: the hidden half, 4th ed CRC Press, Boca Raton, Florida. pp. 37.1-37.15

Estimating penetrometer resistance and matric potential from the velocities of shear and compression waves

A - Papers appearing in refereed journals

Gao, W., Watts, C. W., Ren, T., Shin, H-C., Taherzadeh, S., Attenborough, K., Jenkins, M. and Whalley, W. R. 2013. Estimating penetrometer resistance and matric potential from the velocities of shear and compression waves. Soil Science Society of America Journal. 77, pp. 721-728. https://doi.org/10.2136/sssaj2012.0394

Non-invasive characterization of pore-related and elastic properties of soils in linear Biot-Stoll theory using acoustic-to-seismic coupling

A - Papers appearing in refereed journals

Shin, H-C., Taherzadeh, S., Attenborough, K., Whalley, W. R. and Watts, C. W. 2013. Non-invasive characterization of pore-related and elastic properties of soils in linear Biot-Stoll theory using acoustic-to-seismic coupling. European Journal of Soil Science. 64 (3), pp. 308-323. https://doi.org/10.1111/ejss.12000

A novel grass hybrid to reduce flood generation in temperate regions

A - Papers appearing in refereed journals

Macleod, C. J. A., Humphreys, M. W., Whalley, W. R., Turner, L., Binley, A., Watts, C. W., Skot, L., Joynes, A., Hawkins, S., King, I. P., O'donovan, S. and Haygarth, P. M. 2013. A novel grass hybrid to reduce flood generation in temperate regions. Scientific Reports. 3, p. 1683. https://doi.org/10.1038/srep01683

A dual-porous, inverse model of water retention to study biological and hydrological interactions in soil

A - Papers appearing in refereed journals

Laudone, G. M., Matthews, G. P., Gregory, A. S., Bird, N. R. A. and Whalley, W. R. 2013. A dual-porous, inverse model of water retention to study biological and hydrological interactions in soil. European Journal of Soil Science. 64 (3), pp. 345-356. https://doi.org/10.1111/ejss.12055

Applications of X-ray computed tomography for examining biophysical interactions and structural development in soil systems: a review

A - Papers appearing in refereed journals

Helliwell, J. R., Sturrock, C. J., Grayling, K. M., Tracy, S. R., Flavel, R. J., Young, I. M., Whalley, W. R. and Mooney, S. J. 2013. Applications of X-ray computed tomography for examining biophysical interactions and structural development in soil systems: a review. European Journal of Soil Science. 64 (3), pp. 279-297. https://doi.org/10.1111/ejss.12028

Soil physics: new approaches and emerging challenges

A - Papers appearing in refereed journals

Hallett, P., Mooney, S. and Whalley, W. R. 2013. Soil physics: new approaches and emerging challenges. European Journal of Soil Science. 64 (3), pp. 277-278. https://doi.org/10.1111/ejss.12053

Genotypic variation in the ability of wheat roots to penetrate wax layers

A - Papers appearing in refereed journals

Whalley, W. R., Dodd, I. C., Watts, C. W., Webster, C. P., Phillips, A. L., Andralojc, P. J., White, Robin P., Davies, W. J. and Parry, M. A. J. 2013. Genotypic variation in the ability of wheat roots to penetrate wax layers. Plant and Soil. 364, pp. 171-179. https://doi.org/10.1007/s11104-012-1342-0

Natural capital and ecosystem services, developing an appropriate soils framework as a basis for valuation

A - Papers appearing in refereed journals

Robinson, D. A., Hockley, N., Cooper, D. M., Emmett, B. A., Keith, A. M., Lebron, I., Reynolds, B., Tipping, E., Tye, A. M., Watts, C. W., Whalley, W. R., Black, H. I. J., Warren, G. P. and Robinson, J. S. 2013. Natural capital and ecosystem services, developing an appropriate soils framework as a basis for valuation. Soil Biology and Biochemistry. 57, pp. 1023-1033. https://doi.org/10.1016/j.soilbio.2012.09.008

The velocity of shear waves in unsaturated soil

A - Papers appearing in refereed journals

Whalley, W. R., Jenkins, M. and Attenborough, K. 2012. The velocity of shear waves in unsaturated soil. Soil & Tillage Research. 125, pp. 30-37. https://doi.org/10.1016/j.still.2012.05.013

The effect of compaction and shear deformation of saturated soil on hydraulic conductivity

A - Papers appearing in refereed journals

Whalley, W. R., Matthews, G. P. and Ferraris, S. 2012. The effect of compaction and shear deformation of saturated soil on hydraulic conductivity. Soil & Tillage Research. 125, pp. 23-29. https://doi.org/10.1016/j.still.2012.05.020

The effects of compaction and soil drying on penetrometer resistance

A - Papers appearing in refereed journals

Gao, W., Watts, C. W., Ren, T. and Whalley, W. R. 2012. The effects of compaction and soil drying on penetrometer resistance. Soil & Tillage Research. 125, pp. 14-22. https://doi.org/10.1016/j.still.2012.07.006

Predicting penetrometer resistance from the compression characteristic of soil

A - Papers appearing in refereed journals

Gao, W., Ren, T., Bengough, A. G., Auneau, L., Watts, C. W. and Whalley, W. R. 2012. Predicting penetrometer resistance from the compression characteristic of soil. Soil Science Society of America Journal. 76, pp. 361-369. https://doi.org/10.2136/sssaj2011.0217

Roots, water and nutrient acquisition: let's get physical

A - Papers appearing in refereed journals

Chapman, N., Miller, A. J., Lindsey, K. and Whalley, W. R. 2012. Roots, water and nutrient acquisition: let's get physical. Trends in Plant Science. 17 (12), pp. 701-710. https://doi.org/10.1016/j.tplants.2012.08.001

An overview of fertilizer-P recommendations in Europe: soil testing, calibration and fertilizer recommendations

A - Papers appearing in refereed journals

Jordan-Meille, L., Rubaek, G. H., Ehlert, P. A. I., Genot, V., Hofman, G., Goulding, K. W. T., Recknagel, J., Provolo, G. and Barraclough, P. B. 2012. An overview of fertilizer-P recommendations in Europe: soil testing, calibration and fertilizer recommendations. Soil Use and Management. 28 (4), pp. 419-435. https://doi.org/10.1111/j.1475-2743.2012.00453.x

Influence of organic matter on rheological properties of soil

A - Papers appearing in refereed journals

Markgraf, W., Watts, C. W., Whalley, W. R., Hrkac, T. and Horn, R. 2012. Influence of organic matter on rheological properties of soil. Applied Clay Science. 64, pp. 25-33. https://doi.org/10.1016/j.clay.2011.04.009

Isotope fractionation factors controlling isotopologue signatures of soil-emitted N2O produced by denitrification processes of various rates

C2 - Non-edited contributions to conferences

Lewicka-Szczebak, D., Well, R., Cardenas, L. M., Matthews, P., Misselbrook, T. H., Bol, R., Whalley, W. R. and Gregory, A. S. 2012. Isotope fractionation factors controlling isotopologue signatures of soil-emitted N2O produced by denitrification processes of various rates. Abstracts 6th International Symposium on Isotopomers, Washington, DC, 18-22 June 2012 . pp. 51

A dual porous model to predict the effects of soil structure on denitrification and N2O emission

C2 - Non-edited contributions to conferences

Laudone, G. M., Matthews, G. P., Bird, N. R. A., Whalley, W. R., Cardenas, L. M. and Gregory, A. S. 2012. A dual porous model to predict the effects of soil structure on denitrification and N2O emission. Abstracts 4th International Congress Eurosoil 2012, Bari, 2-6 July 2012 .

Genetic and management approaches to boost UK wheat yields by ameliorating water deficits

A - Papers appearing in refereed journals

Dodd, I. C., Whalley, W. R., Ober, E. S. and Parry, M. A. J. 2011. Genetic and management approaches to boost UK wheat yields by ameliorating water deficits. Journal of Experimental Botany. 62, pp. 5241-5248. https://doi.org/10.1093/jxb/err242

A model to predict the effects of soil structure on denitrification and N2O emission

A - Papers appearing in refereed journals

Laudone, G. M., Matthews, G. P., Bird, N. R. A., Whalley, W. R., Cardenas, L. M. and Gregory, A. S. 2011. A model to predict the effects of soil structure on denitrification and N2O emission. Journal of Hydrology. 409, pp. 283-290. https://doi.org/10.1016/j.jhydrol.2011.08.026

The velocity of shear waves in saturated soil

A - Papers appearing in refereed journals

Whalley, W. R., Jenkins, M. and Attenborough, K. 2011. The velocity of shear waves in saturated soil. Soil Science Society of America Journal. 75, pp. 1652-1657. https://doi.org/10.2136/sssaj2010.0449

Molecular and physiological basis of nutrient use efficiency in crops

E - Books edited/written by staff member, alone/with others

Hawkesford, M. J. and Barraclough, P. B. 2011. Molecular and physiological basis of nutrient use efficiency in crops. John Wiley & Sons Chichester, West Sussex.

Water supply and not nitrate concentration determines primary root growth in Arabidopsis

A - Papers appearing in refereed journals

Chapman, N., Whalley, W. R., Lindsey, K. and Miller, A. J. 2011. Water supply and not nitrate concentration determines primary root growth in Arabidopsis. Plant, Cell and Environment. 34 (10), pp. 1630-1638. https://doi.org/10.1111/j.1365-3040.2011.02358.x

Drought stress, effect on soil mechanical impedance and root (crop) growth

G - Articles in popular magazines and other technical publications

Whalley, W. R. and Clark, L. J. 2011. Drought stress, effect on soil mechanical impedance and root (crop) growth.

Crop emergence, the impact of mechanical impedance

B - Book chapters etc edited externally

Whalley, W. R. and Finch-Savage, W. E. 2011. Crop emergence, the impact of mechanical impedance. in: Glinski, J., Lipiec, J. and Horabik, J. (ed.) Encyclopedia of agrophysics Springer, Dordrecht. pp. 163-167

Effect of soil saturation on denitrification in a grassland soil

C2 - Non-edited contributions to conferences

Cardenas, L. M., Butler, M., Gregory, A. S., Matthews, G. P., Whalley, W. R., Bird, N. R. A., Misselbrook, T. H., Laudone, G. M. and Scholefield, D. 2011. Effect of soil saturation on denitrification in a grassland soil. Abstracts Conference on Nitrogen and Global Change: Key Findings - Future Challenges, Edinburgh, 11-15 April 2011 .

Soil engineering in vivo: harnessing natural biogeochemical systems for sustainable, multi-functional engineering solutions

A - Papers appearing in refereed journals

Dejong, J. T., Soga, K., Banwart, S. A., Whalley, W. R., Ginn, T. R., Nelson, D. C., Mortensen, B. M., Martinez, B. C. and Barkouki, T. 2011. Soil engineering in vivo: harnessing natural biogeochemical systems for sustainable, multi-functional engineering solutions. Journal of the Royal Society Interface. 8, pp. 1-15. https://doi.org/10.1098/rsif.2010.0270

Soil management in relation to sustainable agriculture and ecosystem services

A - Papers appearing in refereed journals

Powlson, D. S., Gregory, P. J., Whalley, W. R., Quinton, J. N., Hopkins, D. W., Whitmore, A. P., Hirsch, P. R. and Goulding, K. W. T. 2011. Soil management in relation to sustainable agriculture and ecosystem services. Food Policy. 36, pp. S72-S87. https://doi.org/10.1016/j.foodpol.2010.11.025

Estimating soil strength in the rooting zone of wheat

A - Papers appearing in refereed journals

Whitmore, A. P., Whalley, W. R., Bird, N. R. A., Watts, C. W. and Gregory, A. S. 2011. Estimating soil strength in the rooting zone of wheat. Plant and Soil. 339, pp. 363-375. https://doi.org/10.1007/s11104-010-0588-7

Separating the effects of water and nitrate stress on root system architecture

C2 - Non-edited contributions to conferences

Chapman, N., Whalley, W. R., Miller, A. J. and Lindsey, K. 2010. Separating the effects of water and nitrate stress on root system architecture. Abstracts 15th International Workshop on Plant Membrane Biology, Adelaide, 19-24 September 2010 . pp. 61

Root water potential integrates discrete soil physical properties to influence ABA signalling during partial rootzone drying

A - Papers appearing in refereed journals

Dodd, I. C., Egea, G., Watts, C. W. and Whalley, W. R. 2010. Root water potential integrates discrete soil physical properties to influence ABA signalling during partial rootzone drying. Journal of Experimental Botany. 61, pp. 3543-3551. https://doi.org/10.1093/jxb/erq195

Measurement and simulation of the effect of compaction on the pore structure and saturated hydraulic conductivity of grassland and arable soil

A - Papers appearing in refereed journals

Matthews, G. P., Laudone, G. M., Gregory, A. S., Bird, N. R. A., Matthews, A. G. De G. and Whalley, W. R. 2010. Measurement and simulation of the effect of compaction on the pore structure and saturated hydraulic conductivity of grassland and arable soil. Water Resources Research. 46, p. W05501 (13pp). https://doi.org/10.1029/2009WR007720

Estimating relative hydraulic conductivity from the water release characteristic of a shrinking clay soil

A - Papers appearing in refereed journals

Gregory, A. S., Bird, N. R. A., Whalley, W. R. and Matthews, G. P. 2010. Estimating relative hydraulic conductivity from the water release characteristic of a shrinking clay soil. Soil Science Society of America Journal. 74, pp. 1113-1118. https://doi.org/10.2136/sssaj2009.0356

Deformation and shrinkage effects on the soil water release characteristic

A - Papers appearing in refereed journals

Gregory, A. S., Bird, N. R. A., Whalley, W. R., Matthews, G. P. and Young, I. M. 2010. Deformation and shrinkage effects on the soil water release characteristic. Soil Science Society of America Journal. 74, pp. 1104-1112. https://doi.org/10.2136/sssaj2009.0278

A dual-porous, biophysical void structure model of soil for the understanding of the conditions causing nitrous oxide emission

C2 - Non-edited contributions to conferences

Matthews, G. P., Laudone, G. M., Whalley, W. R., Bird, N. R. A., Gregory, A. S., Cardenas, L. M. and Misselbrook, T. H. 2010. A dual-porous, biophysical void structure model of soil for the understanding of the conditions causing nitrous oxide emission. European Geosciences Union (EGU).

Soil management and grass species effects on the hydraulic properties of shrinking soils

A - Papers appearing in refereed journals

Gregory, A. S., Webster, C. P., Watts, C. W., Whalley, W. R., Macleod, C. J. A., Joynes, A., Papadopoulos, A., Haygarth, P. M., Binley, A., Humphreys, M. W., Turner, L. B., Skot, L. and Matthews, G. P. 2010. Soil management and grass species effects on the hydraulic properties of shrinking soils. Soil Science Society of America Journal. 74, pp. 753-761. https://doi.org/10.2136/sssaj2009.0284

Nitrogen efficiency of wheat: genotypic and environmental variation and prospects for improvement

A - Papers appearing in refereed journals

Barraclough, P. B., Howarth, J. R., Jones, J., Lopez-Bellido, R., Parmar, S., Shepherd, C. E. and Hawkesford, M. J. 2010. Nitrogen efficiency of wheat: genotypic and environmental variation and prospects for improvement. European Journal of Agronomy. 33, pp. 1-11. https://doi.org/10.1016/j.eja.2010.01.005

Long-term effects of fertilizing systems on soil microstructure: rheological investigations of Rothamsted soils classifying stiffness degradation

C2 - Non-edited contributions to conferences

Markgraf, W., Horn, R., Watts, C. W. and Whalley, W. R. 2009. Long-term effects of fertilizing systems on soil microstructure: rheological investigations of Rothamsted soils classifying stiffness degradation. ISTRO 18th Triennial Conference Proceedings, Izmir, Turkey, 15-19 June 2009 . pp. T4-025-1-8

Linking plant biology and soil physics to understand hillslope hydrology

C2 - Non-edited contributions to conferences

Macleod, C. J. A., Binley, A., Clark, L. J., Gregory, A. S., Hawkins, S. L., Humphreys, M., Joynes, A., Papdopoulos, A., Skot, L., Stone, A., Turner, L. B., Watts, C. W., Webster, C. P., Whalley, W. R. and Haygarth, P. M. 2009. Linking plant biology and soil physics to understand hillslope hydrology. Abstracts European Geophysical Union General Assembly, Vienna, 19-24 April 2009 .

Measurement and pore-level modelling of the production of nitrous oxide from soil

C2 - Non-edited contributions to conferences

Matthews, G. P., Laudone, G. M., Whalley, W. R., Bird, N. R. A., Gregory, A. S., Cardenas, L. M. and Misselbrook, T. H. 2009. Measurement and pore-level modelling of the production of nitrous oxide from soil. Abstracts 2nd International Conference on Biohydrology 2009: a Changing Climate for Biology and Soil Hydrology Interactions, Bratislava, 21-24 September 2009 .

Measurement of low matric potentials with porous matrix sensors and water-filled tensiometers

A - Papers appearing in refereed journals

Whalley, W. R., Lock, G., Jenkins, M., Peloe, T., Burek, K., Balendonck, J., Take, W. A., Tuzel, I. H. and Tuzel, Y. 2009. Measurement of low matric potentials with porous matrix sensors and water-filled tensiometers. Soil Science Society of America Journal. 73 (6), pp. 1796-1803. https://doi.org/10.2136/sssaj2008.0400

Identifying traits to improve the nitrogen economy of wheat: recent advances and future prospects

A - Papers appearing in refereed journals

Foulkes, M. J., Hawkesford, M. J., Barraclough, P. B., Holdsworth, M. J., Kerr, S., Kightley, S. and Shewry, P. R. 2009. Identifying traits to improve the nitrogen economy of wheat: recent advances and future prospects. Field Crops Research. 114, pp. 329-342. https://doi.org/10.1016/j.fcr.2009.09.005

Physical effects of soil drying on roots and crop growth

A - Papers appearing in refereed journals

Whitmore, A. P. and Whalley, W. R. 2009. Physical effects of soil drying on roots and crop growth. Journal of Experimental Botany. 60, pp. 2845-2857. https://doi.org/10.1093/jxb/erp200

A sulphur deficiency-induced gene, sdi1 , involved in the utilization of stored sulphate pools under sulphur-limiting conditions has potential as a diagnostic indicator of sulphur nutritional status

A - Papers appearing in refereed journals

Howarth, J. R., Parmar, S., Barraclough, P. B. and Hawkesford, M. J. 2009. A sulphur deficiency-induced gene, sdi1 , involved in the utilization of stored sulphate pools under sulphur-limiting conditions has potential as a diagnostic indicator of sulphur nutritional status. Plant Biotechnology Journal. 7 (2), pp. 200-209. https://doi.org/10.1111/j.1467-7652.2008.00391.x

Evidence from near-isogenic lines that root penetration increases with root diameter and bending stiffness in rice

A - Papers appearing in refereed journals

Clark, L. J., Price, A. H., Steele, K. A. and Whalley, W. R. 2008. Evidence from near-isogenic lines that root penetration increases with root diameter and bending stiffness in rice. Functional Plant Biology. 35, pp. 1163-1171. https://doi.org/10.1071/FP08132

A bioinformatic and transcriptomic approach to identifying positional candidate genes without fine mapping: an example using rice root-growth QTLs

A - Papers appearing in refereed journals

Norton, G. J., Aitkenhead, M. J., Khowaja, F. S., Whalley, W. R. and Price, A. H. 2008. A bioinformatic and transcriptomic approach to identifying positional candidate genes without fine mapping: an example using rice root-growth QTLs. Genomics. 92 (5), pp. 344-352. https://doi.org/10.1016/j.ygeno.2008.07.002

Co-ordinated expression of amino acid metabolism in response to N and S deficiency during wheat grain filling

A - Papers appearing in refereed journals

Howarth, J. R., Parmar, S., Jones, J., Shepherd, C. E., Corol, D. I., Galster, A. M., Hawkins, N. D., Miller, S. J., Baker, J. M., Verrier, P. J., Ward, J. L., Beale, M. H., Barraclough, P. B. and Hawkesford, M. J. 2008. Co-ordinated expression of amino acid metabolism in response to N and S deficiency during wheat grain filling. Journal of Experimental Botany. 59, pp. 3675-3689. https://doi.org/10.1093/jxb/ern218

Wetting of agricultural soil measured by a simplified capillary rise technique

A - Papers appearing in refereed journals

Matthews, G. P., Watts, C. W., Powlson, D. S., Price, J. C. and Whalley, W. R. 2008. Wetting of agricultural soil measured by a simplified capillary rise technique. European Journal of Soil Science. 59 (4), pp. 817-823. https://doi.org/10.1111/j.1365-2389.2008.01039.x

A gradual rather than abrupt increase in soil strength gives better root penetration of strong layers

A - Papers appearing in refereed journals

Clark, L. J., Ferraris, S., Price, A. H. and Whalley, W. R. 2008. A gradual rather than abrupt increase in soil strength gives better root penetration of strong layers. Plant and Soil. 307, pp. 235-242. https://doi.org/10.1007/s11104-008-9602-8

The effect of soil strength on yield of wheat

A - Papers appearing in refereed journals

Whalley, W. R., Watts, C. W., Gregory, A. S., Mooney, S. J., Clark, L. J. and Whitmore, A. P. 2008. The effect of soil strength on yield of wheat. Plant and Soil. 306, pp. 237-247. https://doi.org/10.1007/s11104-008-9577-5

Farm Level Optimal Water Management: Assistant for Irrigation under Deficit (FLOW-AID)

G - Articles in popular magazines and other technical publications

Whalley, W. R. 2008. Farm Level Optimal Water Management: Assistant for Irrigation under Deficit (FLOW-AID). RRA Newsletter. 26, p. 2.

An agronomic and physiological re-evaluation of the potassium and sodium requirements and fertilizer recommendations for sugar beet

A - Papers appearing in refereed journals

Milford, G. F. J., Jarvis, P. J., Jones, J. and Barraclough, P. B. 2008. An agronomic and physiological re-evaluation of the potassium and sodium requirements and fertilizer recommendations for sugar beet. The Journal of Agricultural Science. 146, pp. 429-443. https://doi.org/10.1017/S0021859607007630

Physical resilience of soil to field compaction and the interactions with plant growth and microbial community structure

A - Papers appearing in refereed journals

Gregory, A. S., Watts, C. W., Whalley, W. R., Kuan, H. L., Griffiths, B. S., Hallett, P. D. and Whitmore, A. P. 2007. Physical resilience of soil to field compaction and the interactions with plant growth and microbial community structure. European Journal of Soil Science. 58 (6), pp. 1221-1232. https://doi.org/10.1111/j.1365-2389.2007.00956.x

Nitrogen use efficiency and resource allocation in wheat

C2 - Non-edited contributions to conferences

Hawkesford, M. J., Howarth, J. R. and Barraclough, P. B. 2007. Nitrogen use efficiency and resource allocation in wheat. Abstracts 4th UK Small Grain Cereals Genetic and Genomics Workshop: From Genes to Traits, Cambridge, 14-16 March 2007 .

A porous-matrix sensor to measure the matric potential of soil water in the field

A - Papers appearing in refereed journals

Whalley, W. R., Clark, L. J., Take, W. A., Bird, N. R. A., Leech, P. K., Cope, R. E. and Watts, C. W. 2007. A porous-matrix sensor to measure the matric potential of soil water in the field. European Journal of Soil Science. 58 (1), pp. 18-25. https://doi.org/10.1111/j.1365-2389.00790.x

Prediction of the penetrometer resistance of soils with models with few parameters

A - Papers appearing in refereed journals

Whalley, W. R., To, J., Kay, B. D. and Whitmore, A. P. 2007. Prediction of the penetrometer resistance of soils with models with few parameters. Geoderma. 137, pp. 370-377. https://doi.org/10.1016/j.geoderma.2006.08.029

Effects of soil compaction and irrigation on the concentrations of selenium and arsenic in wheat grains

A - Papers appearing in refereed journals

Zhao, F-J., Lopez-Bellido, F. J., Gray, C. W., Whalley, W. R., Clark, L. J. and McGrath, S. P. 2007. Effects of soil compaction and irrigation on the concentrations of selenium and arsenic in wheat grains. Science of the Total Environment. 372, pp. 433-439. https://doi.org/10.1016/j.scitotenv.2006.09.028

Genetically modified hydrographs: what can grass genetics do for temperate catchment hydrology?

C2 - Non-edited contributions to conferences

Macleod, C. J. A., Binley, A., Clark, L. J., Hawkins, S. L., Humphreys, M. W., King, I. P., Scholefield, D., Turner, L. B., Whalley, W. R. and Haygarth, P. M. 2007. Genetically modified hydrographs: what can grass genetics do for temperate catchment hydrology? European Geosciences Union, General Assembly 2007, Vienna, Austria, 16-20 April 2007.

Genetically modified hydrographs: what can grass genetics do for temperate catchment hydrology?

A - Papers appearing in refereed journals

Macleod, C. J. A., Binley, A., Clark, L. J., Hawkins, S. L., Humphreys, M. W., Turner, L. B., Whalley, W. R. and Haygarth, P. M. 2007. Genetically modified hydrographs: what can grass genetics do for temperate catchment hydrology? Hydrological Processes. 21 (16), pp. 2217-2221. https://doi.org/10.1002/hyp.6780

Grass roots to improve the management of soil-water

C1 - Edited contributions to conferences/learned societies

Humphreys, M. W., Binley, A., Clark, L. J., Hawkins, S. L., King, I. P., Macleod, C. J. A., Turner, L. B., Whalley, W. R. and Haygarth, P. M. 2007. Grass roots to improve the management of soil-water. Hopkins, J. J., Duncan, A. J., McCracken, D. I., Peel, S. and Tallowin, J. R. B. (ed.) 'High Value Grassland: providing biodiversity, a clean environment and premium products': Proceedings BGS/BES/BSAS Conference, Keele University, Staffs, 17-19 April 2007. British Grassland Society Occasional Symposium, 38. pp. 249-252

The role of clay, organic carbon and long-term management on mouldboard plough draught measured on the Broadbalk wheat experiment at Rothamsted

A - Papers appearing in refereed journals

Watts, C. W., Clark, L. J., Poulton, P. R., Powlson, D. S. and Whitmore, A. P. 2006. The role of clay, organic carbon and long-term management on mouldboard plough draught measured on the Broadbalk wheat experiment at Rothamsted. Soil Use and Management. 22 (4), pp. 334-341. https://doi.org/10.1111/j.1475-2743.2006.00054.x

Calculation of the compression index and precompression stress from soil compression test data

A - Papers appearing in refereed journals

Gregory, A. S., Whalley, W. R., Watts, C. W., Bird, N. R. A., Hallett, P. D. and Whitmore, A. P. 2006. Calculation of the compression index and precompression stress from soil compression test data. Soil & Tillage Research. 89, pp. 45-57. https://doi.org/10.1016/j.still.2005.06.012

Does soil strength play a role in wheat yield losses caused by soil drying?

A - Papers appearing in refereed journals

Whalley, W. R., Clark, L. J., Gowing, D. J. G., Cope, R. E., Lodge, R. J. and Leeds-Harrison, P. B. 2006. Does soil strength play a role in wheat yield losses caused by soil drying? Plant and Soil. 280, pp. 279-290. https://doi.org/10.1007/s11104-005-3485-8

Mechanical impedance and nutrient acquisition in rice

A - Papers appearing in refereed journals

Brown, D. A., Clark, L. J., Howarth, J. R., Parmar, S. and Hawkesford, M. J. 2006. Mechanical impedance and nutrient acquisition in rice. Plant and Soil. 280, pp. 65-76. https://doi.org/10.1007/s11104-005-2508-9

Diagnosing nitrogen status of wheat cultivars for yield and quality

C1 - Edited contributions to conferences/learned societies

Barraclough, P. B., Shepherd, C. and Svecnjak, Z. 2005. Diagnosing nitrogen status of wheat cultivars for yield and quality. Li, C. J. (ed.) Plant Nutrition for Food Security, Human Health and Environmental Protection. Proceedings 15th International Plant Nutrition Colloquium, Beijing, 14-19 September 2005 . Tsinghua University Press, Beijing. pp. 878-879

The potassium requirements of modern UK sugar beet crops and use of factory data to improve on the use of potassium fertilisers

C1 - Edited contributions to conferences/learned societies

Jarvis, P. J., Milford, G. F. J., Jones, J. and Barraclough, P. B. 2005. The potassium requirements of modern UK sugar beet crops and use of factory data to improve on the use of potassium fertilisers. Production and Protection of Sugar Beet and Potatoes. Aspects of Applied Biology 76 . pp. 47-54

Transcriptome analysis of wheat responses to sulfur nutrition

B - Book chapters etc edited externally

Lu, C., Howarth, J. R., Barraclough, P. B. and Edwards, K. J. 2005. Transcriptome analysis of wheat responses to sulfur nutrition. in: Hawkesford, M. J., Rennenberg, H., Sirko, A., Schnug, E., Saito, K., Stulen, I. and Dekok, L. J. (ed.) Sulfur transport and assimilation in plants in the postgenomic era Backhuys Publishers, Leiden Netherlands. pp. 157-160

A highly specific sulfate-deficiency induced gene (sdi1) from wheat

B - Book chapters etc edited externally

Howarth, J. R. and Barraclough, P. B. 2005. A highly specific sulfate-deficiency induced gene (sdi1) from wheat. in: Hawkesford, M. J., Rennenberg, H., Sirko, A., Schnug, E., Saito, K., Stulen, I. and Dekok, L. J. (ed.) Sulfur transport and assimilation in plants in the postgenomic era Backhuys Publishers, Leiden Netherlands. pp. 161-164

Microarray analysis of wheat grain transcriptome under nitrogen and sulphur deficiency

C2 - Non-edited contributions to conferences

Hawkesford, M. J., Lu, C., Howarth, J. R., Barraclough, P. B. and Edwards, K. J. 2005. Microarray analysis of wheat grain transcriptome under nitrogen and sulphur deficiency. Li, C. J. (ed.) Plant Nutrition for Food Security, Human Health and Environmental Protection. Proceedings 15th International Plant Nutrition Colloquium, Beijing, 14-19 September 2005 . Tsinghua University Press, Beijing. pp. 80-81

Adverse effects of simulated harvesting of short-rotation willow and poplar coppice on vertical pressures and rut depths

A - Papers appearing in refereed journals

Watts, C. W., Clark, L. J., Chamen, W. C. T. and Whitmore, A. P. 2005. Adverse effects of simulated harvesting of short-rotation willow and poplar coppice on vertical pressures and rut depths. Soil & Tillage Research. 84 (2), pp. 192-199. https://doi.org/10.1016/j.still.2004.11.012

Sensing the physical and nutritional status of the root environment in the field: a review of progress and opportunities

A - Papers appearing in refereed journals

Clark, L. J., Gowing, D. J. G., Lark, R. M., Leeds-Harrison, P. B., Miller, A. J., Wells, D. M., Whalley, W. R. and Whitmore, A. P. 2005. Sensing the physical and nutritional status of the root environment in the field: a review of progress and opportunities. The Journal of Agricultural Science. 143, pp. 347-358. https://doi.org/10.1017/S0021859605005253

Markedly different gene expression in wheat grown with organic or inorganic fertilizer

A - Papers appearing in refereed journals

Lu, C., Hawkesford, M. J., Barraclough, P. B., Poulton, P. R., Wilson, I. D., Barker, G. L. and Edwards, K. J. 2005. Markedly different gene expression in wheat grown with organic or inorganic fertilizer. Proceedings of the Royal Society of London Series B Biological Sciences. 272 (1575), pp. 1901-1908. https://doi.org/10.1098/rspb.2005.3161

Biological and technical processes that mediate micro-aggregation of clays

A - Papers appearing in refereed journals

Watts, C. W., Whalley, W. R., Brookes, P. C., Devonshire, B. J. and Whitmore, A. P. 2005. Biological and technical processes that mediate micro-aggregation of clays. Soil Science. 170 (8), pp. 573-583. https://doi.org/10.1097/01.ss.0000178206.74040.0c

Establishing the potassium requirements of modern, high-yielding sugar beet crops for yield and beet quality. (Final report for British Beet Research Organisation project 00/25)

D1 - Technical reports: non-confidential

Jarvis, P., Barraclough, P. B., Jones, J. and Milford, G. F. J. 2004. Establishing the potassium requirements of modern, high-yielding sugar beet crops for yield and beet quality. (Final report for British Beet Research Organisation project 00/25).

Predicting post-anthesis N requirements of bread wheat with a Minolta SPAD meter

A - Papers appearing in refereed journals

Lopez-Bellido, R. J., Shepherd, C. E. and Barraclough, P. B. 2004. Predicting post-anthesis N requirements of bread wheat with a Minolta SPAD meter. European Journal of Agronomy. 20, pp. 313-320.

Genomics and the Rothamsted Classical Experiments

G - Articles in popular magazines and other technical publications

Hawkesford, M. J., Barraclough, P. B., Howarth, J. R., Lu, C. and Edwards, K. J. 2003. Genomics and the Rothamsted Classical Experiments. Rothamsted Research Annual Report. 2002-2003, pp. 36-39.

Recent research on potassium and sodium recommendations for sugar beet

G - Articles in popular magazines and other technical publications

Jarvis, P., Milford, G. F. J., Armstrong, M. and Barraclough, P. B. 2003. Recent research on potassium and sodium recommendations for sugar beet. British Sugar Beet Review. 71(4), pp. 4-9.

P nutrition of winter oilseed rape (HGCA Topic Sheet No. 67)

G - Articles in popular magazines and other technical publications

Barraclough, P. B. 2003. P nutrition of winter oilseed rape (HGCA Topic Sheet No. 67).

Novel sensors for measuring soil nitrogen, water availability and strength

C1 - Edited contributions to conferences/learned societies

Miller, A. J., Wells, D. M., Braven, J., Ebdon, L., Le Goff, T., Clark, L. J., Whalley, W. R., Gowing, D. J. G. and Leeds-Harrison, P. B. 2003. Novel sensors for measuring soil nitrogen, water availability and strength. Proceedings BCPC International Congress - Crop Science and Technology, Glasgow, 10-12 November 2003 . pp. 1107-1114

Measuring inorganic orthophosphate in oilseed rape using reflectoquant technology

A - Papers appearing in refereed journals

Major, B. J. and Barraclough, P. B. 2003. Measuring inorganic orthophosphate in oilseed rape using reflectoquant technology. Communications in Soil Science and Plant Analysis. 34, pp. 2839-2851.

Plant and soil testing to assess the adequacy of phosphorus supply to winter oilseed rape (H-GCA Oilseeds Project Report No OS58)

D1 - Technical reports: non-confidential

Barraclough, P. B. and Major, B. J. 2002. Plant and soil testing to assess the adequacy of phosphorus supply to winter oilseed rape (H-GCA Oilseeds Project Report No OS58). Home Grown Cereals Authority (HGCA) London.

Root penetration of strong soil in rainfed lowland rice: comparison of laboratory screens with field performance

A - Papers appearing in refereed journals

Clark, L. J., Cope, R. E., Whalley, W. R., Barraclough, P. B. and Wade, L. J. 2002. Root penetration of strong soil in rainfed lowland rice: comparison of laboratory screens with field performance. Field Crops Research. 76, pp. 189-198. https://doi.org/10.1016/S0378-4290(02)00039-4

Critical phosphate (P) and inorganic phosphate (Pi) concentrations for the growth of winter oilseed rape (Brassica napus )

C1 - Edited contributions to conferences/learned societies

Major, B. J. and Barraclough, P. B. 2001. Critical phosphate (P) and inorganic phosphate (Pi) concentrations for the growth of winter oilseed rape (Brassica napus ). Horst, W. J. (ed.) Plant nutrition - food security and sustainability of agro-ecosystems . Kluwer Academic Publishers, Dordrecht, Netherlands. pp. 714-715

Effect of water stress on chlorophyll meter readings in winter wheat.

C1 - Edited contributions to conferences/learned societies

Barraclough, P. B. and Kyte, J. 2001. Effect of water stress on chlorophyll meter readings in winter wheat. Horst, W. J. (ed.) Plant nutrition - food security and sustainability of agro-ecosystems . Kluwer Academic Publishers, Dordrecht, Netherlands. pp. 722-723

Phosphorus requirements of winter wheat and winter oilseed rape

G - Articles in popular magazines and other technical publications

Barraclough, P. B. and Major, B. J. 2001. Phosphorus requirements of winter wheat and winter oilseed rape. ARIA newsletter. Issue 4.

Aggregation of a soil with different cropping histories following the addition of organic materials

A - Papers appearing in refereed journals

Watts, C. W., Whalley, W. R., Longstaff, D. J., White, Robin P., Brookes, P. C. and Whitmore, A. P. 2001. Aggregation of a soil with different cropping histories following the addition of organic materials. Soil Use and Management. 17 (4), pp. 263-268. https://doi.org/10.1111/j.1475-2743.2001.tb00036.x

Unlocking soil phosphorus with the help of P efficient wheat varieties from China

G - Articles in popular magazines and other technical publications

Gordon-Weeks, R., Davies, T. G. E. and Barraclough, P. B. 2001. Unlocking soil phosphorus with the help of P efficient wheat varieties from China. BBSRC Business. January 2001, pp. 20-21.

Partial mechanical impedance can increase the turgor of seedling pea roots

A - Papers appearing in refereed journals

Clark, L. J., Whalley, W. R. and Barraclough, P. B. 2001. Partial mechanical impedance can increase the turgor of seedling pea roots. Journal of Experimental Botany. 52, pp. 167-171.

The effect of iron concentration, hindered settling, saturating cation and aggregate density of clays on the size distribution determined by gravitation X-ray sedimentometry

A - Papers appearing in refereed journals

Watts, C. W., Whalley, W. R., Bird, N. R. A. and Ashman, M. R. 2000. The effect of iron concentration, hindered settling, saturating cation and aggregate density of clays on the size distribution determined by gravitation X-ray sedimentometry. European Journal of Soil Science. 51 (2), pp. 305-311. https://doi.org/10.1046/j.1365-2389.2000.00311.x

Development of on-farm tests for phosphate and potassium in wheat. (HGCA Project Report No. 224)

D1 - Technical reports: non-confidential

Barraclough, P. B., Bollons, H. M., Chambers, B. J., Bhogal, A. and Hatley, D. 2000. Development of on-farm tests for phosphate and potassium in wheat. (HGCA Project Report No. 224). Home Grown Cereals Authority (HGCA) London.

Screening the ability of rice roots to overcome the mechanical impedance of wax layers: importance of test conditions and measured criteria

A - Papers appearing in refereed journals

Clark, L. J., Aphale, S. L. and Barraclough, P. B. 2000. Screening the ability of rice roots to overcome the mechanical impedance of wax layers: importance of test conditions and measured criteria. Plant and Soil. 219 (1-2), pp. 187-196. https://doi.org/10.1023/A:1004753900945

A combined RFLP and AFLP linkage map of upland rice (Oryza sativa L.) used to identify QTLs for root-penetration ability

A - Papers appearing in refereed journals

Price, A. H., Steele. K. A., Moore, B. J., Barraclough, P. B. and Clark, L. J. 2000. A combined RFLP and AFLP linkage map of upland rice (Oryza sativa L.) used to identify QTLs for root-penetration ability. Theoretical and Applied Genetics. 100 (1), pp. 49-56. https://doi.org/10.1007/s001220050007

How should plant breeders screen for rice root growth through strong soil?

G - Articles in popular magazines and other technical publications

Clark, L. J., Whalley, W. R., Price, A. H., Wade, L. J. and Barraclough, P. B. 1999. How should plant breeders screen for rice root growth through strong soil?

Screening rice root growth under mechanical impedance. Final Technical Report of DFID Project No. R6373

D1 - Technical reports: non-confidential

Clark, L. J., Whalley, W. R., Dexter, A. R. and Barraclough, P. B. 1999. Screening rice root growth under mechanical impedance. Final Technical Report of DFID Project No. R6373.

Assessing the phosphorus status of winter wheat crops: inorganic orthophosphate in whole shoots

A - Papers appearing in refereed journals

Bollons, H. M. and Barraclough, P. B. 1999. Assessing the phosphorus status of winter wheat crops: inorganic orthophosphate in whole shoots. The Journal of Agricultural Science. 133, pp. 285-295. https://doi.org/10.1017/S0021859699007066

Do dicotyledons generate greater maximum axial root growth pressures than monocotyledons?

A - Papers appearing in refereed journals

Clark, L. J. and Barraclough, P. B. 1999. Do dicotyledons generate greater maximum axial root growth pressures than monocotyledons? Journal of Experimental Botany. 50 (336), pp. 1263-1266. https://doi.org/10.1093/jxb/50.336.1263

Maximum axial root growth pressure in pea seedlings: effects of measurement techniques and cultivars

A - Papers appearing in refereed journals

Clark, L. J., Bengough, A. G., Whalley, W. R., Dexter, A. R. and Barraclough, P. B. 1999. Maximum axial root growth pressure in pea seedlings: effects of measurement techniques and cultivars. Plant and Soil. 209, pp. 101-109.

Evaluation of agar and agarose gels for studying mechanical impedance in rice roots

A - Papers appearing in refereed journals

Clark, L. J., Whalley, W. R., Leigh, R. A., Dexter, A. R. and Barraclough, P. B. 1999. Evaluation of agar and agarose gels for studying mechanical impedance in rice roots. Plant and Soil. 207, pp. 37-43.

Diagnosing P and K requirements of winter wheat (HGCA Topic Sheet No. 19)

G - Articles in popular magazines and other technical publications

Barraclough, P. B. 1998. Diagnosing P and K requirements of winter wheat (HGCA Topic Sheet No. 19).

Assessment of some spatially variable soil factors limiting crop yields (Proceedings International Fertiliser Society No. 419)

C1 - Edited contributions to conferences/learned societies

Johnston, A. E., Barraclough, P. B., Poulton, P. R. and Dawson, C. J. 1998. Assessment of some spatially variable soil factors limiting crop yields (Proceedings International Fertiliser Society No. 419). International Fertiliser Society, York. pp. 46pp

New developments: possibilities for diagnosing the K response in crops

G - Articles in popular magazines and other technical publications

Barraclough, P. B. 1998. New developments: possibilities for diagnosing the K response in crops. FACTS-TIS. 1, p. 3.

Phosphorus matters

G - Articles in popular magazines and other technical publications

Barraclough, P. B. 1998. Phosphorus matters. National Farm Waste Management Register Newsletter. No. 1, p. 3.

Optimising P and K use on winter wheat: plant and soil testing

G - Articles in popular magazines and other technical publications

Barraclough, P. B. 1998. Optimising P and K use on winter wheat: plant and soil testing.

Diagnosing the adequacy of P and K supply to wheat crops by soil and plant analysis

G - Articles in popular magazines and other technical publications

Barraclough, P. B. 1998. Diagnosing the adequacy of P and K supply to wheat crops by soil and plant analysis. ARIA newsletter. 1998, pp. 34-38.

P and K assessment and fertiliser use

C1 - Edited contributions to conferences/learned societies

Barraclough, P. B., Bollons, H. M. and Chambers, B. J. 1998. P and K assessment and fertiliser use. Management through Understanding: Research into Practice. Proceedings 6th H-GCA R&D Conference on Cereals and Oilseeds, Cambridge, 8-9 January 1998 . Home Grown Cereals Authority (HGCA) London. pp. 7.1-7.11

Use of field diagnostics to improve predictions of nitrogen dynamics in arable land

C1 - Edited contributions to conferences/learned societies

Smith, J. U. and Barraclough, P. B. 1997. Use of field diagnostics to improve predictions of nitrogen dynamics in arable land. Lemaire, G. and Burns, I. G. (ed.) Diagnostic Procedures for Crop N Management. INRA Colloquium 82 . Institut National de la Recherche Agronomique (INRA), Paris. pp. 81-91

Plant testing for assessing the adequacy of P supply in winter wheat crops

C1 - Edited contributions to conferences/learned societies

Bollons, H. M., Barraclough, P. B. and Chambers, B. J. 1997. Plant testing for assessing the adequacy of P supply in winter wheat crops. Optimising Cereal Inputs: its Scientific Basis. Aspects of Applied Biology 50 .

Stored nitrate for diagnosing N sufficiency in wheat crops

C1 - Edited contributions to conferences/learned societies

Barraclough, P. B. and Pearman, I. 1997. Stored nitrate for diagnosing N sufficiency in wheat crops. Ando, T. (ed.) Plant Nutrition for Sustainable Food Production and Environment: Proceedings 13th International Plant Nutrition Colloquium, Tokyo, September 1997 . Kluwer Academic Publishers, Dordrecht, Netherlands. pp. 33-35

Plant testing to determine the P and K status of wheat. Home-Grown Cereals Authority Project Report 137

D1 - Technical reports: non-confidential

Barraclough, P. B., Bollons, H. M., Chambers, B. J., Hatley, D. and Moss, D. P. 1997. Plant testing to determine the P and K status of wheat. Home-Grown Cereals Authority Project Report 137. H-GCA, London.

N requirement of winter wheat and diagnosis of deficiency

C1 - Edited contributions to conferences/learned societies

Barraclough, P. B. 1997. N requirement of winter wheat and diagnosis of deficiency. Optimising Cereal Inputs: its Scientific Basis. Aspects of Applied Biology 50 .

Inorganic orthophosphate for diagnosing the phosphorus status of wheat plants

A - Papers appearing in refereed journals

Bollons, H. M. and Barraclough, P. B. 1997. Inorganic orthophosphate for diagnosing the phosphorus status of wheat plants. Journal of Plant Nutrition. 20, pp. 641-655.

Analysis of monoterpenoids in glandular trichomes of the catmint Nepeta racemosa

A - Papers appearing in refereed journals

Clark, L. J., Hamilton, J. G. C., Chapman, J. V., Rhodes, M. J. C. and Hallahan, D. L. 1997. Analysis of monoterpenoids in glandular trichomes of the catmint Nepeta racemosa. The Plant Journal. 11 (6), pp. 1387-1393. https://doi.org/10.1046/j.1365-313X.1997.11061387.x

Evaluation of techniques for screening the ability of rice roots to grow against mechanical impedance

C2 - Non-edited contributions to conferences

Clark, L. J., Whalley, W. R., Cope, R. E., Aphale, S. L., Barraclough, P. B., Dexter, A. R. and Leigh, R. A. 1997. Evaluation of techniques for screening the ability of rice roots to grow against mechanical impedance. Abstracts 2nd Tansley Conference Putting Plant Physiology On The Map, Bangor, 1-3 April 1997 . pp. 12

Elemental sulphur as a fertiliser for temperate crops. Confidential report commissioned by Hydro-Agri GmBH

D1 - Technical reports: non-confidential

Barraclough, P. B. 1996. Elemental sulphur as a fertiliser for temperate crops. Confidential report commissioned by Hydro-Agri GmBH.

The effect of foliar supplements of potassium nitrate and urea on the yield of winter wheat

A - Papers appearing in refereed journals

Barraclough, P. B. and Haynes, J. 1996. The effect of foliar supplements of potassium nitrate and urea on the yield of winter wheat. Fertilizer Research. 44, pp. 217-223.

Development and essential oil accumulation in glandular trichomes of catmint (Nepeta racemosa )

C2 - Non-edited contributions to conferences

Clark, L. J., Hallahan, D. L., Bourett, T. M., Howard, R. J. and Hamilton, J. G. C. 1996. Development and essential oil accumulation in glandular trichomes of catmint (Nepeta racemosa ). Abstracts SEB Meeting on Control of Plant Development: Genes and Signals, Dublin, 21-25 July 1996 . pp. P21

The effect of mechanical impedance on root growth in rice

C2 - Non-edited contributions to conferences

Clark, L. J., Whalley, W. R., Cope, R. E., Dexter, A. R., Barraclough, P. B. and Leigh, R. A. 1996. The effect of mechanical impedance on root growth in rice. Abstracts 5th Symposium of the International Society of Root Research, Clemson, 14-18 July 1996 . pp. 139

Complete mechanical impedance increases the turgor of cells in the apex of pea roots

A - Papers appearing in refereed journals

Clark, L. J., Whalley, W. R., Dexter, A. R., Barraclough, P. B. and Leigh, R. A. 1996. Complete mechanical impedance increases the turgor of cells in the apex of pea roots. Plant, Cell and Environment. 19 (9), pp. 1099-1102. https://doi.org/10.1111/j.1365-3040.1996.tb00217.x

Physiological and cellular basis for the growth of rice roots through compacted soil

D1 - Technical reports: non-confidential

Clark, L. J., Barraclough, P. B., Leigh, R. A., Whalley, W. R. and Dexter, A. R. 1994. Physiological and cellular basis for the growth of rice roots through compacted soil. Overseas Development Administration (ODA) London.

The temperature-dependence of the maximum axial growth pressure of roots of pea (Pisum sativum L.)

A - Papers appearing in refereed journals

Whalley, W. R., Clark, L. J. and Dexter, A. R. 1994. The temperature-dependence of the maximum axial growth pressure of roots of pea (Pisum sativum L.). Plant and Soil. 163, pp. 211-215.

Sulphur, phosphorus, potassium and copper - measuring crop needs, impacts on quality and options for management

C1 - Edited contributions to conferences/learned societies

McGrath, S. P., Zhao, F-J., Barraclough, P. B., Chambers, B., Withers, P. and Sinclair, A. 1994. Sulphur, phosphorus, potassium and copper - measuring crop needs, impacts on quality and options for management. Proceedings Cereals R & D Conference, 1994 . Home Grown Cereals Authority (HGCA) London. pp. 6.1-6.28

SCI Agriculture and Environment Group Symposium: novel aspects of crop nutrition

A - Papers appearing in refereed journals

Barraclough, P. B., Grindlay, D. J. C., Sylvester, B. R., Scott, R. K., Dampney, P. M. R., Wallace, P. A., Withers, P. J. A., Zhao, F-J., McGrath, S. P., Luong, H., Booth, E. J., Walker, K. C., Till, A. R., Sexton, J., Bennett, J., Reynolds, S. B., Hocking, T. J., Gooding, M. J., Smith, S. P., Davies, W. P, Spalding, P. C. J., Kettlewell, P. S., Warden, M. R., Johnson, P. A., Vaidyanathan, L. V., Lewis, D. J., Dawson, K. P., Cook, J. W., Parry, D. W., Whapham, C. A., Blunden, G., Jenkins, T., Hankins, S. D., Cogram, K. J., Steveni, C. M., Norrington-Davies, J., Chambers, B. J., Richardson, S. J., Dawson, C. J., Tye, A. M., Fullen, M. A., Daly, M., Seymour, G. B., Edwards, R. and Hobson, G. E. 1993. SCI Agriculture and Environment Group Symposium: novel aspects of crop nutrition. Journal of the Science of Food and Agriculture. 63 (1), pp. 115-132.

Critical plant K concentrations for growth and problems in the diagnosis of nutrient deficiencies by plant analysis

A - Papers appearing in refereed journals

Barraclough, P. B. and Leigh, R. A. 1993. Critical plant K concentrations for growth and problems in the diagnosis of nutrient deficiencies by plant analysis. Plant and Soil. 155/156, pp. 219-222.

Nutrient storage pool concentrations in plants as diagnostic indicators of nutrient sufficiency

A - Papers appearing in refereed journals

Barraclough, P. B. 1993. Nutrient storage pool concentrations in plants as diagnostic indicators of nutrient sufficiency. Plant and Soil. 155/156, pp. 175-178.

Nutrient storage pool concentrations in plants as diagnostic indicators of nutrient sufficiency

B - Book chapters etc edited externally

Barraclough, P. B. 1993. Nutrient storage pool concentrations in plants as diagnostic indicators of nutrient sufficiency. in: Barrow, N. J. (ed.) Plant nutrition - from genetic engineering to field practice Kluwer Academic Publishers, Dordrecht, Netherlands. pp. 195-198

The significance of nutrient concentrations in plant 'storage pools' for growth and yield

C2 - Non-edited contributions to conferences

Barraclough, P. B. 1993. The significance of nutrient concentrations in plant 'storage pools' for growth and yield.

Critical plant K concentrations for growth and problems in the diagnosis of nutrient deficiences by plant analysis

B - Book chapters etc edited externally

Barraclough, P. B. and Leigh, R. A. 1993. Critical plant K concentrations for growth and problems in the diagnosis of nutrient deficiences by plant analysis. in: Barrow, N. J. (ed.) Plant nutrition - from genetic engineering to field practice Kluwer Academic Publishers, Dordrecht, Netherlands. pp. 245-248

Grass yield in relation to potassium supply and the concentration of cations in tissue water

A - Papers appearing in refereed journals

Barraclough, P. B. and Leigh, R. A. 1993. Grass yield in relation to potassium supply and the concentration of cations in tissue water. The Journal of Agricultural Science. 121 (2), pp. 157-168. https://doi.org/10.1017/S0021859600077017

The feasibility of regulating nitrogen concentrations in agricultural soils. Report commissioned by Hydro-Agri GmbH

D1 - Technical reports: non-confidential

Barraclough, P. B. 1992. The feasibility of regulating nitrogen concentrations in agricultural soils. Report commissioned by Hydro-Agri GmbH.

Studies on the mechanism of sodium transport at the tonoplast of Beta vulgaris. PhD thesis, University of London

F - Theses

Clark, L. J. 1990. Studies on the mechanism of sodium transport at the tonoplast of Beta vulgaris. PhD thesis, University of London. F - Theses

The effects of drought and nitrogen on root growth and water uptake by winter wheat

C1 - Edited contributions to conferences/learned societies

Barraclough, P. B., Kuhlman, H. and Weir, A. H. 1990. The effects of drought and nitrogen on root growth and water uptake by winter wheat. Proceedings of the 1st Congress of the European Society of Agronomy, Paris, 1990. pp. 1-0-03

Modelling potassium uptake by wheat (Triticum aestivum) crops

C1 - Edited contributions to conferences/learned societies

Seward, P., Barraclough, P. B. and Gregory, P. J. 1990. Modelling potassium uptake by wheat (Triticum aestivum) crops.

Modelling K uptake by plants from soil.

C1 - Edited contributions to conferences/learned societies

Barraclough, P. B. 1990. Modelling K uptake by plants from soil. Proceedings of the 22nd Colloquium of the International Potash Institute, Soligorsk, USSR, 1990. International Potash Institute (IPI), Berne, Switzerland. pp. 217-230.

Effect of planting date and irrigation on soil temperature, soil water content, and maize root growth

C2 - Non-edited contributions to conferences

Kovar, J. L., Barraclough, P. B. and Barber, S. A. 1990. Effect of planting date and irrigation on soil temperature, soil water content, and maize root growth. Transations of the 14th International Congress of Soil Science, Kyoto, 1990 Vol VI.. pp. 251-252.

The effects of prolonged drought and nitrogen fertiliser on root and shoot growth and water uptake by winter wheat.

A - Papers appearing in refereed journals

Barraclough, P. B., Kuhlmann, H. and Weir, A. H. 1990. The effects of prolonged drought and nitrogen fertiliser on root and shoot growth and water uptake by winter wheat. Journal of Agronomy and Crop Science. 163 (5), pp. 352-360. https://doi.org/10.1111/j.1439-037X.1989.tb00778.x

Artefacts associated with the use of acridine orange to measure sodium/proton exchange in tonoplast vesicles.

B - Book chapters etc edited externally

Clark, L. J. and Leigh, R. A. 1989. Artefacts associated with the use of acridine orange to measure sodium/proton exchange in tonoplast vesicles. in: Plant membrane transport: the current position. J. Dainty, M.I. de Michelis, E. Marre & F. Rasi-Caldogno eds Elsevier, Amsterdam. pp. 207-208

The extent to which physical factors in the rooting zone limit crop growth.

C1 - Edited contributions to conferences/learned societies

Goss, M. J., Barraclough, P. B. and Powell, B. A. 1989. The extent to which physical factors in the rooting zone limit crop growth. Roots and the soil environment. Aspects of Applied Biology .

Root growth and nutrient uptake by field crops under temperate conditions.

C1 - Edited contributions to conferences/learned societies

Barraclough, P. B. 1989. Root growth and nutrient uptake by field crops under temperate conditions. Roots and the soil environment. Aspects of Applied Biology .

Utilization of mineral nitrogen in the subsoil by winter wheat.

A - Papers appearing in refereed journals

Kuhlmann, H., Barraclough, P. B. and Weir, A. H. 1989. Utilization of mineral nitrogen in the subsoil by winter wheat. Zeitschrift fur Pflanzenernahrung und Bodenkunde. 152 (3), pp. 291-295. https://doi.org/10.1002/jpln.19891520305

Root growth, macro-nutrient uptake dynamics and soil fertility requirements of a high-yielding winter oilseed rape crop.

A - Papers appearing in refereed journals

Barraclough, P. B. 1989. Root growth, macro-nutrient uptake dynamics and soil fertility requirements of a high-yielding winter oilseed rape crop. Plant and Soil. 119, pp. 59-70.

Theory and use of centrifugal photosedimentation for particle size analysis of clays

F - Theses

Whalley, W. R. 1988. Theory and use of centrifugal photosedimentation for particle size analysis of clays. F - Theses

Recent advances in our understanding of the transport of nutrients across vacuolar membranes of plant cells. Agriculture Group Symposium : advances in plant nutrition.

C1 - Edited contributions to conferences/learned societies

Leigh, R. A., Pope, A. J. and Clark, L. J. 1988. Recent advances in our understanding of the transport of nutrients across vacuolar membranes of plant cells. Agriculture Group Symposium : advances in plant nutrition. Wiley.

Root-soil interactions.

B - Book chapters etc edited externally

Barraclough, P. B. and Tinker, P. B. 1988. Root-soil interactions. in: Handbook of environmental chemistry. Vol.2(D) Reactions and processes. Ed O. Hutzinger Berlin : Springer pp. 153-176

Effects of a compacted subsoil layer on root and shoot growth, water use and nutrient uptake of winter wheat.

A - Papers appearing in refereed journals

Barraclough, P. B. and Weir, A. H. 1988. Effects of a compacted subsoil layer on root and shoot growth, water use and nutrient uptake of winter wheat. The Journal of Agricultural Science. 110 (2), pp. 207-216. https://doi.org/10.1017/S0021859600081235

Comparison between the seminal and nodal root systems of winter wheat in their activity for N and K uptake.

A - Papers appearing in refereed journals

Kuhlmann, H. and Barraclough, P. B. 1987. Comparison between the seminal and nodal root systems of winter wheat in their activity for N and K uptake. Zeitschrift fur Pflanzenernahrung und Bodenkunde. 150 (1), pp. 24-30. https://doi.org/10.1002/jpln.19871500106

The growth and activity of winter wheat roots in the field: nutrient inflows of high-yielding crops.

A - Papers appearing in refereed journals

Barraclough, P. B. 1986. The growth and activity of winter wheat roots in the field: nutrient inflows of high-yielding crops. The Journal of Agricultural Science. 106 (1), pp. 53-59. https://doi.org/10.1017/S0021859600061724

The growth and activity of winter wheat roots in the field: nutrient uptakes of high-yielding crops.

A - Papers appearing in refereed journals

Barraclough, P. B. 1986. The growth and activity of winter wheat roots in the field: nutrient uptakes of high-yielding crops. The Journal of Agricultural Science. 106 (1), pp. 45-52. https://doi.org/10.1017/S0021859600061712

The effect of drought on the root growth of winter wheat and on its water uptake from a deep loam.

A - Papers appearing in refereed journals

Weir, A. H. and Barraclough, P. B. 1986. The effect of drought on the root growth of winter wheat and on its water uptake from a deep loam. Soil Use and Management. 2 (3), pp. 91-96. https://doi.org/10.1111/j.1475-2743.1986.tb00689.x

Nutrient fluxes in the rhizosphere of high-yielding grain crops.

G - Articles in popular magazines and other technical publications

Barraclough, P. B. 1986. Nutrient fluxes in the rhizosphere of high-yielding grain crops.

The growth and activity of winter wheat roots in the field: the effect of sowing date and soil type on root growth of high-yielding crops

A - Papers appearing in refereed journals

Barraclough, P. B. and Leigh, R. A. 1984. The growth and activity of winter wheat roots in the field: the effect of sowing date and soil type on root growth of high-yielding crops. The Journal of Agricultural Science. 103 (1), pp. 59-74. https://doi.org/10.1017/S002185960004332X

The growth and activity of winter wheat roots in the field: root growth of high-yielding crops in relation to shoot growth

A - Papers appearing in refereed journals

Barraclough, P. B. 1984. The growth and activity of winter wheat roots in the field: root growth of high-yielding crops in relation to shoot growth. The Journal of Agricultural Science. 103 (2), pp. 439-442. https://doi.org/10.1017/s0021859600047419

The determination of ionic diffusion coefficients in field soils. II. Diffusion of bromide ions in undisturbed soil cores.

A - Papers appearing in refereed journals

Barraclough, P. B. and Tinker, P. B. 1982. The determination of ionic diffusion coefficients in field soils. II. Diffusion of bromide ions in undisturbed soil cores. Journal of Soil Science. 33 (1), pp. 13-24. https://doi.org/10.1111/j.1365-2389.1982.tb01743.x

The determination of ionic diffusion coefficients in field soils. I. Diffusion coefficients in sieved soils in relation water content and bulk density.

A - Papers appearing in refereed journals

Barraclough, P. B. and Tinker, P. B. 1981. The determination of ionic diffusion coefficients in field soils. I. Diffusion coefficients in sieved soils in relation water content and bulk density. Journal of Soil Science. 32 (2), pp. 225-236. https://doi.org/10.1111/j.1365-2389.1981.tb01702.x