Results from experiments comparing aqueous and anhydrous ammonia with nitrochalk for grass cut for silage

A - Papers appearing in refereed journals

Widdowson, F. V., Penny, A. and Flint, R. C. 1973. Results from experiments comparing aqueous and anhydrous ammonia with nitrochalk for grass cut for silage. The Journal of Agricultural Science. 81 (DEC), pp. 465-480. https://doi.org/10.1017/s0021859600086524

Authors	Widdowson, F. V., Penny, A. and Flint, R. C.
Abstract	RESP-06881
Year of Publication	1973
Journal	The Journal of Agricultural Science
Journal citation	81 (DEC), pp. 465-480
Digital Object Identifier (DOI)	https://doi.org/10.1017/s0021859600086524
Open access	Published as non-open access
Funder	Biotechnology and Biological Sciences Research Council
Publisher's version	results-from-experiments-comparing-aqueous-and-anhydrous-ammonia-with-nitro-chalk-for-grass-cut-for-silage.pdf
Publisher	Cambridge University Press (CUP) Cambridge
	Cambridge University Press (CUP)
ISSN	0021-8596

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A - Papers appearing in refereed journals

Penny, A., Widdowson, F. V. and Jenkyn, J. F. 1978. Spring top-dressings of ‘Nitro-Chalk’ and late sprays of a liquid N-fertilizer and a broad spectrum fungicide for consecutive crops of winter wheat at Saxmundham, Suffolk. The Journal of Agricultural Science. 90 (3), pp. 509-516. https://doi.org/10.1017/s0021859600056021

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A - Papers appearing in refereed journals

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A - Papers appearing in refereed journals

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Results from experiments measuring residues of nitrogen fertilizer given for sugar-beet, and of ploughed-in sugar-beet tops, on yield of following barley

A - Papers appearing in refereed journals

Widdowson, F. V. 1974. Results from experiments measuring residues of nitrogen fertilizer given for sugar-beet, and of ploughed-in sugar-beet tops, on yield of following barley. The Journal of Agricultural Science. 83 (DEC), pp. 415-421. https://doi.org/10.1017/s0021859600026885

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A - Papers appearing in refereed journals

Widdowson, F. V., Penny, A. and Flint, R. C. 1974. Results from experiments measuring effects of large amounts of fertilizer and of farmyard manure on main-crop potatoes grown in sandy soil at Woburn, Bedfordshire. The Journal of Agricultural Science. 82 (FEB), pp. 117-127. https://doi.org/10.1017/s0021859600050292

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A - Papers appearing in refereed journals

Ashworth, J. and Flint, R. C. 1974. Delayed nitrification and controlled recovery of aqueous ammonia injected under grass. The Journal of Agricultural Science. 83 (OCT), pp. 327-333. https://doi.org/10.1017/s0021859600052023

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A - Papers appearing in refereed journals

Widdowson, F. V. and Penny, A. 1973. Yields and N, P and K Contents of the Crops Grown in the Rothamsted Reference Experiment, 1956-70, . Rothamsted Experimental Station Report. 1972 (2), pp. 111-130.

Results from experiments with wheat and barley measuring the effects of paths on yield

A - Papers appearing in refereed journals

Widdowson, F. V. 1973. Results from experiments with wheat and barley measuring the effects of paths on yield. Experimental husbandry. 23, pp. 16-20.

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A - Papers appearing in refereed journals

Widdowson, F. V. and Penny, A. 1972. Results from the Woburn Reference Experiment, 1960-1969. Rothamsted Experimental Station Report. 1971 (2), pp. 69-94.

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A - Papers appearing in refereed journals

Widdowson, F. V., Penny, A. and Flint, R. C. 1972. Results from an experiment comparing aqueous ammonia with Nitro-Chalk for grazed grass. The Journal of Agricultural Science. 79 (2), pp. 341-348. https://doi.org/10.1017/S0021859600032330

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Gasser, J. K. R., Blakemore, M. and Flint, R. C. 1972. Experiments on the use of anhydrous ammonia for grass. The Journal of Agricultural Science. 78 (2), pp. 193-201. https://doi.org/10.1017/S002185960006901X

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A - Papers appearing in refereed journals

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A - Papers appearing in refereed journals

Mattingly, G. E. G., Penny, A. and Blakemore, M. 1971. Evaluation of phosphate fertilizers. III. Immediate and residual values of potassium metaphosphate and magnesium ammonium phosphate for potatoes, radishes, barley and ryegrass. The Journal of Agricultural Science. 76, pp. 131-141. https://doi.org/10.1017/S0021859600015677

The Agdell experiment - Estimates of the P and K accumulated from fertiliser dressings given between 1848-1951 their recovery by grass between 1958 and 1970 and their effect on the response by grass to new dressings of P and K

A - Papers appearing in refereed journals

Johnston, A. E. and Penny, A. 1971. The Agdell experiment - Estimates of the P and K accumulated from fertiliser dressings given between 1848-1951 their recovery by grass between 1958 and 1970 and their effect on the response by grass to new dressings of P and K. Rothamsted Experimental Station Report. 1970 (2), pp. 38-68.

The Effects of Partially Sterilising Agricultural Soils With Formalin, and of Applying Nitrogen Fertilisers, on the Yields and N Contents of Spring and Winter Wheat, of Barley and of Grass

A - Papers appearing in refereed journals

Widdowson, F. V. and Penny, A. 1970. The Effects of Partially Sterilising Agricultural Soils With Formalin, and of Applying Nitrogen Fertilisers, on the Yields and N Contents of Spring and Winter Wheat, of Barley and of Grass. Rothamsted Experimental Station Report. 1969 (Part 2), pp. 113-134. https://doi.org/10.23637/ERADOC-1-34866

Anhydrous ammonia-yields and recoveries by spring wheat.

A - Papers appearing in refereed journals

Widdowson, F. V. and Penny, A. 1970. Anhydrous ammonia-yields and recoveries by spring wheat. Anhydrous Ammonia. Proceedings of a Symposium on Aspects of its Technology and Use as a Fertilizer.. pp. 61-66.

The effects of three crops and of the N fertilizer given to them on the yield of following barley

A - Papers appearing in refereed journals

Widdowson, F. V. and Penny, A. 1970. The effects of three crops and of the N fertilizer given to them on the yield of following barley. The Journal of Agricultural Science. 74 (3), pp. 511-522. https://doi.org/10.1017/S0021859600017639

The value of residues from long-period manuring at Rothamsted and Woburn IV The value to arable crops of residues accumulated from superphosphate

A - Papers appearing in refereed journals

Johnston, A. E., Warren, R. G. and Penny, A. 1970. The value of residues from long-period manuring at Rothamsted and Woburn IV The value to arable crops of residues accumulated from superphosphate. Rothamsted Experimental Station Report. 1969 (Part 2), pp. 39-68. https://doi.org/10.23637/ERADOC-1-34863

The value of residues from long-period manuring at Rothamsted and Woburn V The value to arable crops of residues accumulated from potassium fertilizers

A - Papers appearing in refereed journals

Johnston, A. E., Warren, R. G. and Penny, A. 1970. The value of residues from long-period manuring at Rothamsted and Woburn V The value to arable crops of residues accumulated from potassium fertilizers. Rothamsted Experimental Station Report. 1969 (Part 2), pp. 69-90. https://doi.org/10.23637/ERADOC-1-34864

Effects on barley and kale of NPK fertilizers containing differing proportions of urea and ammonium nitrate, and either triple superphosphate or mono-urea phosphate

A - Papers appearing in refereed journals

Widdowson, F. V. and Penny, A. 1969. Effects on barley and kale of NPK fertilizers containing differing proportions of urea and ammonium nitrate, and either triple superphosphate or mono-urea phosphate. The Journal of Agricultural Science. 73 (1), pp. 125-132. https://doi.org/10.1017/S0021859600024205

Why starve grass ?

A - Papers appearing in refereed journals

Widdowson, F. V. 1968. Why starve grass ? Dairy Farmer. (supplement).

Results of an experiment at Rothamsted testing farmyard manure and N, P and K fertilizers on five arable crops and permanent grass III. Yields 1961–1965

A - Papers appearing in refereed journals

Widdowson, F. V. and Penny, A. 1968. Results of an experiment at Rothamsted testing farmyard manure and N, P and K fertilizers on five arable crops and permanent grass III. Yields 1961–1965. The Journal of Agricultural Science. 70 (1), pp. 53-58. https://doi.org/10.1017/S0021859600017184

The effects of potassium and magnesium fertilizers on yield and composition of successive crops of ryegrass, clover, sugar beet, potatoes, kale and barley on sandy soil at Woburn

A - Papers appearing in refereed journals

Bolton, J. and Penny, A. 1968. The effects of potassium and magnesium fertilizers on yield and composition of successive crops of ryegrass, clover, sugar beet, potatoes, kale and barley on sandy soil at Woburn. Journal of the Science of Food and Agriculture. 70 (3), pp. 303-311. https://doi.org/10.1017/S0021859600012624

Evaluation of phosphate fertilizers I. Immediate value of dicalcium phosphate, nitrophosphates, Gafsa rock phosphate, basic slag and potassium metaphosphate for barley and ryegrass

A - Papers appearing in refereed journals

Mattingly, G. E. G. and Penny, A. 1968. Evaluation of phosphate fertilizers I. Immediate value of dicalcium phosphate, nitrophosphates, Gafsa rock phosphate, basic slag and potassium metaphosphate for barley and ryegrass. The Journal of Agricultural Science. 70, pp. 131-138.

Results of an experiment at Woburn testing farmyard manure and N, P and K fertilizers on five arable crops and a long ley: I. Yields

A - Papers appearing in refereed journals

Widdowson, F. V. and Penny, A. 1967. Results of an experiment at Woburn testing farmyard manure and N, P and K fertilizers on five arable crops and a long ley: I. Yields. The Journal of Agricultural Science. 68 (1), pp. 95-102. https://doi.org/10.1017/S0021859600017901

Experiments comparing the effects on yields of potatoes of three methods of applying three amounts of NPK fertilizer and the residual effects on following winter wheat

A - Papers appearing in refereed journals

Widdowson, F. V., Penny, A. and Williams, R. J. B. 1967. Experiments comparing the effects on yields of potatoes of three methods of applying three amounts of NPK fertilizer and the residual effects on following winter wheat. The Journal of Agricultural Science. 69 (2), pp. 247-257. https://doi.org/10.1017/S0021859600018657

Experiments measuring effects of ammonium and nitrate fertilizers, with and without sodium and potassium, on spring barley

A - Papers appearing in refereed journals

Widdowson, F. V., Penny, A. and Williams, R. J. B. 1967. Experiments measuring effects of ammonium and nitrate fertilizers, with and without sodium and potassium, on spring barley. The Journal of Agricultural Science. 69 (2), pp. 197-207. https://doi.org/10.1017/S0021859600018591

Results of an experiment at Woburn testing farmyard manure and N, P and K fertilizers on five arable crops and on a long ley: II. N, P and K removed by the crops

A - Papers appearing in refereed journals

Widdowson, F. V., Penny, A. and Williams, R. J. B. 1967. Results of an experiment at Woburn testing farmyard manure and N, P and K fertilizers on five arable crops and on a long ley: II. N, P and K removed by the crops. The Journal of Agricultural Science. 68 (2), pp. 293-300. https://doi.org/10.1017/S0021859600016361

The value of urea nitrate and urea phosphate as nitrogen fertilizers for grass and barley

A - Papers appearing in refereed journals

Gasser, J. K. R. and Penny, A. 1967. The value of urea nitrate and urea phosphate as nitrogen fertilizers for grass and barley. The Journal of Agricultural Science. 67 (1), pp. 139-146. https://doi.org/10.1017/S0021859600016555

An experiment measuring effects of N, P and K fertilizers on yield and N, P and K contents of grazed grass

A - Papers appearing in refereed journals

Widdowson, F. V., Penny, A. and Williams, R. J. B. 1966. An experiment measuring effects of N, P and K fertilizers on yield and N, P and K contents of grazed grass. The Journal of Agricultural Science. 67 (1), pp. 121-128. https://doi.org//10.1017/S0021859600067654

Ammonia as a fertiliser

A - Papers appearing in refereed journals

Gasser, J. K. R. and Widdowson, F. V. 1966. Ammonia as a fertiliser. Journal of the Institute of Corn and Agricultural Merchants - ICAM. (Winter), pp. 1-4.

Experiments measuring the residual effects of nitrogen fertilizers

A - Papers appearing in refereed journals

Widdowson, F. V. and Penny, A. 1965. Experiments measuring the residual effects of nitrogen fertilizers. The Journal of Agricultural Science. 65 (2), pp. 195-200. https://doi.org/10.1017/S002185960008391X

An experiment measuring effects of N, P and K fertilizers on yield and N, P and K contents of grass

A - Papers appearing in refereed journals

Widdowson, F. V., Penny, A. and Williams, R. J. B. 1965. An experiment measuring effects of N, P and K fertilizers on yield and N, P and K contents of grass. The Journal of Agricultural Science. 64 (1), pp. 93-100. https://doi.org/10.1017/S0021859600010522

Experiments comparing concentrated and dilute NPK fertilizers and four nitrogen fertilizers on a range of crops

A - Papers appearing in refereed journals

Widdowson, F. V., Penny, A. and Williams, R. J. B. 1965. Experiments comparing concentrated and dilute NPK fertilizers and four nitrogen fertilizers on a range of crops. The Journal of Agricultural Science. 65 (1), pp. 45-55. https://doi.org/10.1017/S002185960008535X

An experiment comparing responses to nitrogen fertilizer of four grass species Part II Residual effects in wheat and barley

A - Papers appearing in refereed journals

Widdowson, F. V., Penny, A. and Williams, R. J. B. 1964. An experiment comparing responses to nitrogen fertilizer of four grass species Part II Residual effects in wheat and barley. Experimental husbandry. 11, pp. 22-30.

Experiments comparing liquid and solid fertilisers for grass and kale

A - Papers appearing in refereed journals

Widdowson, F. V. and Penny, A. 1964. Experiments comparing liquid and solid fertilisers for grass and kale. Experimental husbandry. 10, pp. 97-100.

Experiments comparing broadcast and combine drilled dressings of several NPK fertilizers for spring barley

A - Papers appearing in refereed journals

Widdowson, F. V. and Penny, A. 1964. Experiments comparing broadcast and combine drilled dressings of several NPK fertilizers for spring barley. Experimental husbandry. 14, pp. 83-97.

Experiments testing P and K fertilizers on lucerne 1952-1957

A - Papers appearing in refereed journals

Widdowson, F. V., Penny, A. and Williams, R. J. B. 1964. Experiments testing P and K fertilizers on lucerne 1952-1957. Experimental husbandry. 10, pp. 39-45.

Side-placing urea and other nitrogen fertilizers for spring barley

A - Papers appearing in refereed journals

Widdowson, F. V., Penny, A. and Williams, R. J. B. 1964. Side-placing urea and other nitrogen fertilizers for spring barley. The Journal of Agricultural Science. 62 (1), pp. 73-82. https://doi.org/10.1017/S0021859600059803

An experiment comparing responses to nitrogen fertilizer of four grass species

A - Papers appearing in refereed journals

Widdowson, F. V., Penny, A. and Williams, R. J. B. 1963. An experiment comparing responses to nitrogen fertilizer of four grass species. Experimental husbandry. 9, pp. 28-36.

Experiments comparing yield, and residual effects on winter wheat, of 1-year clover, rye-grass and clover-rye-grass leys

A - Papers appearing in refereed journals

Widdowson, F. V., Penny, A. and Williams, R. J. B. 1963. Experiments comparing yield, and residual effects on winter wheat, of 1-year clover, rye-grass and clover-rye-grass leys. The Journal of Agricultural Science. 61 (3), pp. 397-408. https://doi.org/10.1017/S0021859600018128

Results of an experiment at Rothamsted testing farmyard manure and N, P and K fertilizers on five arable crops I. Yields

A - Papers appearing in refereed journals

Widdowson, F. V., Penny, A. and Cooke, G. W. 1963. Results of an experiment at Rothamsted testing farmyard manure and N, P and K fertilizers on five arable crops I. Yields. The Journal of Agricultural Science. 60 (3), pp. 347-352. https://doi.org/10.1017/S002185960001193X

Results of an experiment at Rothamsted testing farmyard manure and N, P and K fertilizers on five arable crops II. Nutrients removed by crops

A - Papers appearing in refereed journals

Williams, R. J. B., Cooke, G. W. and Widdowson, F. V. 1963. Results of an experiment at Rothamsted testing farmyard manure and N, P and K fertilizers on five arable crops II. Nutrients removed by crops. The Journal of Agricultural Science. 60 (3), pp. 353-357. https://doi.org/10.1017/S0021859600011941

Residual value of superphosphate and rock phosphate on an acid soil I. Yields and phosphorus uptakes in the field

A - Papers appearing in refereed journals

Mattingly, G. E. G. and Widdowson, F. V. 1963. Residual value of superphosphate and rock phosphate on an acid soil I. Yields and phosphorus uptakes in the field. The Journal of Agricultural Science. 60 (3), pp. 399-407. https://doi.org/10.1017/S0021859600012004

Applying fertilizers for spring barley

A - Papers appearing in refereed journals

Widdowson, F. V. 1962. Applying fertilizers for spring barley. Annals of Applied Biology - AAB. 50 (2), pp. 356-360. https://doi.org/10.1111/j.1744-7348.1962.tb06029.x

Experiments with nitrogen and potash on potatoes

A - Papers appearing in refereed journals

Widdowson, F. V. and Penny, A. 1962. Experiments with nitrogen and potash on potatoes. Experimental husbandry. 8, pp. 30-39.

An experiment comparing urea-formaldehyde fertilizer with nitro-chalk for Italian ryegrass

A - Papers appearing in refereed journals

Widdowson, F. V., Penny, A. and Williams, R. J. B. 1962. An experiment comparing urea-formaldehyde fertilizer with nitro-chalk for Italian ryegrass. The Journal of Agricultural Science. 59 (2), pp. 263-268. https://doi.org/10.1017/S002185960001529X

Applying nitrogen fertilizers for spring barley

A - Papers appearing in refereed journals

Widdowson, F. V., Penny, A. and Williams, R. J. B. 1961. Applying nitrogen fertilizers for spring barley. The Journal of Agricultural Science. 56 (1), pp. 39-47. https://doi.org/10.1017/S0021859600023789

Autumn nitrogen for winter wheat

A - Papers appearing in refereed journals

Widdowson, F. V., Penny, A. and Williams, R. J. B. 1961. Autumn nitrogen for winter wheat. The Journal of Agricultural Science. 57 (3), pp. 329-334. https://doi.org/10.1017/S0021859600049297

Experiments with nitrogen and potash on barley

A - Papers appearing in refereed journals

Widdowson, F. V., Penny, A. and Williams, R. J. B. 1961. Experiments with nitrogen and potash on barley. The Journal of Agricultural Science. 57 (1), pp. 29-33. https://doi.org/10.1017/S0021859600049972

Fertilizer placement

A - Papers appearing in refereed journals

Widdowson, F. V. 1960. Fertilizer placement. NAAS Quarterly Review. 48, pp. 147-150.

Experiments with urea on spring barley.

A - Papers appearing in refereed journals

Widdowson, F. V. and Penny, A. 1960. Experiments with urea on spring barley. Experimental husbandry. 5, pp. 22-26.

Comparisons of casein and formalized casein with ammonium sulphate, calcium nitrate and urea for Italian ryegrass

A - Papers appearing in refereed journals

Widdowson, F. V. and Shaw, K. 1960. Comparisons of casein and formalized casein with ammonium sulphate, calcium nitrate and urea for Italian ryegrass. The Journal of Agricultural Science. 55 (1), pp. 53-59. https://doi.org/10.1017/S0021859600021602

The value of calcium nitrate and urea for main-crop potatoes and kale

A - Papers appearing in refereed journals

Widdowson, F. V., Penny, A., Williams, R. J. B. and Cooke, G. W. 1960. The value of calcium nitrate and urea for main-crop potatoes and kale. The Journal of Agricultural Science. 55 (1), pp. 1-10. https://doi.org/10.1017/S0021859600021560

Effects of fertilisers and farmyard manure on the copper, manganese, molybdenum and zinc removed by arable crops at Rothamsted

A - Papers appearing in refereed journals

Williams, R. J. B., Stojkovska, A., Cooke, G. W. and Widdowson, F. V. 1960. Effects of fertilisers and farmyard manure on the copper, manganese, molybdenum and zinc removed by arable crops at Rothamsted. Journal of the Science of Food and Agriculture. 11 (10), pp. 570-575. https://doi.org/10.1002/jsfa.2740111004

The value of calcium nitrate and urea for spring-sown cereals

A - Papers appearing in refereed journals

Widdowson, F. V., Penny, A., Williams, R. J. B. and Cooke, G. W. 1959. The value of calcium nitrate and urea for spring-sown cereals. The Journal of Agricultural Science. 52 (2), pp. 200-206. https://doi.org/10.1017/S0021859600036698

The effects of nitrogen upon three stiff-strawed winter wheat varieties

A - Papers appearing in refereed journals

Widdowson, F. V. 1959. The effects of nitrogen upon three stiff-strawed winter wheat varieties . The Journal of Agricultural Science. 53 (1), pp. 17-24. https://doi.org/10.1017/S0021859600030872

Field experiments on phosphate fertilizers. A joint investigation

A - Papers appearing in refereed journals

Cooke, G. W. and Widdowson, F. V. 1959. Field experiments on phosphate fertilizers. A joint investigation. The Journal of Agricultural Science. 53 (1), pp. 46-63. https://doi.org/10.1017/S0021859600030914

Comparisons between combine-drilling and broadcasting muriate of potash for spring barley

A - Papers appearing in refereed journals

Widdowson, F. V., Penny, A., Williams, R. J. B. and Cooke, G. W. 1959. Comparisons between combine-drilling and broadcasting muriate of potash for spring barley. The Journal of Agricultural Science. 53 (1), pp. 10-16. https://doi.org/10.1017/S0021859600030860

Comparisons between placing and broadcasting of nitrogen, phosphorus and potassium fertilizers for potatoes, peas, beans, kale and maize

A - Papers appearing in refereed journals

Widdowson, F. V. and Cooke, G. W. 1958. Comparisons between placing and broadcasting of nitrogen, phosphorus and potassium fertilizers for potatoes, peas, beans, kale and maize. The Journal of Agricultural Science. 51 (1), pp. 53-61. https://doi.org/10.1017/S0021859600032780

Nitrogen fertilizers for spring barley and wheat

A - Papers appearing in refereed journals

Widdowson, F. V. and Cooke, G. W. 1958. Nitrogen fertilizers for spring barley and wheat. The Journal of Agricultural Science. 50 (3), pp. 312-321. https://doi.org/10.1017/S0021859600031518

Observations on the development of Heterodera rostochiensis Woll. in sterile root cultures

A - Papers appearing in refereed journals

Doncaster, C. C., Fenwick, D. W. and Widdowson, F. V. 1958. Observations on the development of Heterodera rostochiensis Woll. in sterile root cultures. Nematologica. 3 (4), pp. 308-314. https://doi.org/10.1163/187529258X00076

The value of nitrophosphate fertilizers

A - Papers appearing in refereed journals

Cooke, G. W., Mattingly, G. E. G. and Widdowson, F. V. 1958. The value of nitrophosphate fertilizers. The Journal of Agricultural Science. 50 (3), pp. 253-259. https://doi.org/10.1017/S0021859600031440

Uptake of phosphorus from P32-labelled superphosphate by field crops Part II. Comparison of placed and broadcast applications to barley

A - Papers appearing in refereed journals

Mattingly, G. E. G. and Widdowson, F. V. 1958. Uptake of phosphorus from P32-labelled superphosphate by field crops Part II. Comparison of placed and broadcast applications to barley. Plant and Soil. 10 (2), pp. 161-175. https://doi.org/10.1007/BF01394262

Uptake of phosphorus from P³²-labelled superphosphate by field crops: part I Effects of simultaneous application of non-radioactive phosphorus fertilizers

A - Papers appearing in refereed journals

Mattingly, G. E. G. and Widdowson, F. V. 1958. Uptake of phosphorus from P³²-labelled superphosphate by field crops: part I Effects of simultaneous application of non-radioactive phosphorus fertilizers. Plant and Soil. 9 (3), pp. 286-304.

Report on 1956 experiments on winter and spring sown cereals comparing methods of application of nitrogen and potassium fertilizers and forms of nitrogen fertilizers

A - Papers appearing in refereed journals

Widdowson, F. V., Penny, A. and Cooke, G. W. 1957. Report on 1956 experiments on winter and spring sown cereals comparing methods of application of nitrogen and potassium fertilizers and forms of nitrogen fertilizers.

The value of mid-season top-dressings of nitrogen fertilizer for main-crop potatoes

A - Papers appearing in refereed journals

Cooke, G. W., Widdowson, F. V. and Wilcox, J. C. 1957. The value of mid-season top-dressings of nitrogen fertilizer for main-crop potatoes. The Journal of Agricultural Science. 49 (1), pp. 81-87. https://doi.org/10.1017/S0021859600034341

The value of nitrophosphate for spring-sown cereals

A - Papers appearing in refereed journals

Cooke, G. W. and Widdowson, F. V. 1956. The value of nitrophosphate for spring-sown cereals. The Journal of Agricultural Science. 47 (1), pp. 112-116. https://doi.org/10.1017/S0021859600039824

Report on 1956 experiments comparing placing and broadcasting of nitrogen, phosphorus and potassium for potatoes, peas, beans, kale and maize

A - Papers appearing in refereed journals

Widdowson, F. V., Penny, A. and Cooke, G. W. 1956. Report on 1956 experiments comparing placing and broadcasting of nitrogen, phosphorus and potassium for potatoes, peas, beans, kale and maize.

Comparisons of ammonium sulphate, calcium nitrate, and urea for potatoes and kale

A - Papers appearing in refereed journals

Cooke, G. W., Penny, A. and Widdowson, F. V. 1956. Comparisons of ammonium sulphate, calcium nitrate, and urea for potatoes and kale. ARC Conference on Fertilisers.

Fertilizer placement for horticultural crops

A - Papers appearing in refereed journals

Cooke, G. W., Jackson, M. V., Widdowson, F. V. and Wilcox, J. C. 1956. Fertilizer placement for horticultural crops. The Journal of Agricultural Science. 47 (2), pp. 249-256. https://doi.org/10.1017/S0021859600040181

The use of 32 P labelled fertilizers to measure superphosphate equivalents of fertilizers in field and pot experiments

A - Papers appearing in refereed journals

Mattingly, G. E. G. and Widdowson, F. V. 1956. The use of 32 P labelled fertilizers to measure superphosphate equivalents of fertilizers in field and pot experiments . Des Rapports presentes au congres international de las science du sol VIth Paris. pp. 461-470.

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