The rapid determination of nitrate in crops, soils, drainage and rainwater by a simple field method using diphenylamine or diphenylbenzidine with glass fibre paper

Williams, R. J. B. 1969. The rapid determination of nitrate in crops, soils, drainage and rainwater by a simple field method using diphenylamine or diphenylbenzidine with glass fibre paper. Chemistry & Industry. pp. 1735-1736.

Related outputs

Atmospheric deposition at Rothamsted, Saxmundham and Woburn Experimental Stations, England, 1969-1984.

A - Papers appearing in refereed journals

Goulding, K. W. T., Poulton, P. R., Thomas, V. H. and Williams, R. J. B. 1986. Atmospheric deposition at Rothamsted, Saxmundham and Woburn Experimental Stations, England, 1969-1984. Water Air And Soil Pollution. 29 (1), pp. 27-49. https://doi.org/10.1007/BF00149327

An experiment begun in 1958 measuring effects of n, p and k fertilizers on yield and n, p and k contents of grass .2. Residual effects on arable crops, 1968-76

A - Papers appearing in refereed journals

Penny, A., Widdowson, F. V. and Williams, R. J. B. 1980. An experiment begun in 1958 measuring effects of n, p and k fertilizers on yield and n, p and k contents of grass .2. Residual effects on arable crops, 1968-76. The Journal of Agricultural Science. 95 (DEC), pp. 583-595. https://doi.org/10.1017/s0021859600087992

An experiment begun in 1958 measuring effects of n, p and k fertilizers on yield and n, p and k contents of grass .1. Effects during 1964-7

A - Papers appearing in refereed journals

Penny, A., Widdowson, F. V. and Williams, R. J. B. 1980. An experiment begun in 1958 measuring effects of n, p and k fertilizers on yield and n, p and k contents of grass .1. Effects during 1964-7. The Journal of Agricultural Science. 95 (DEC), pp. 575-582. https://doi.org/10.1017/s0021859600087980

Results from an Experiment on All-grass and Grass-clover Leys at Saxmundham, 1969-76, and Changes in Soil pH, Nitrogen, Phosphorus and Potassium due to Cropping and Manuring

A - Papers appearing in refereed journals

Johnston, A. E., Poulton, P. R. and Williams, R. J. B. 1979. Results from an Experiment on All-grass and Grass-clover Leys at Saxmundham, 1969-76, and Changes in Soil pH, Nitrogen, Phosphorus and Potassium due to Cropping and Manuring. Rothamsted Experimental Station Report. 1978 (2), pp. 99-117.

Rothamsted studies of soil structure V Comparative measurements of density, stability, strength, and water-holding capacity of soils from the denchworth, evesham, ragdale, hanslope, salop and flint series

A - Papers appearing in refereed journals

Williams, R. J. B. 1979. Rothamsted studies of soil structure V Comparative measurements of density, stability, strength, and water-holding capacity of soils from the denchworth, evesham, ragdale, hanslope, salop and flint series. Journal of Soil Science. 30 (3), pp. 453-461. https://doi.org/10.1111/j.1365-2389.1979.tb01000.x

Effects of Management and Manuring on Physical Properties of some Rothamsted and Woburn Soils

A - Papers appearing in refereed journals

Williams, R. J. B. 1978. Effects of Management and Manuring on Physical Properties of some Rothamsted and Woburn Soils. Rothamsted Experimental Station Report. 1977 (2), pp. 37-54.

The chemical composition of water from land drainage at Saxmundham and Woburn (1970-1975)

A - Papers appearing in refereed journals

Williams, R. J. B. 1976. The chemical composition of water from land drainage at Saxmundham and Woburn (1970-1975). Rothamsted Experimental Station Report. 1975 (2), pp. 37-62.

The chemical composition of rain, land drainage, and borehole water from Rothamsted, Broom's barn, Saxmundham, and Woburn Experimental Stations

A - Papers appearing in refereed journals

Williams, R. J. B. 1976. The chemical composition of rain, land drainage, and borehole water from Rothamsted, Broom's barn, Saxmundham, and Woburn Experimental Stations. Technical Bulletin Ministry of Agriculture Fisheries and Food. 32, pp. 174-200.

The influence of soil type and manuring on measurements of physical properties and nutrient status of some British soils

A - Papers appearing in refereed journals

Williams, R. J. B. 1975. The influence of soil type and manuring on measurements of physical properties and nutrient status of some British soils. Technical Bulletin Ministry of Agriculture Fisheries and Food. 29, pp. 324-343.

The chemical composition of British agricultural liming materials

A - Papers appearing in refereed journals

Margaret Chater and Williams, R. J. B. 1974. The chemical composition of British agricultural liming materials. The Journal of Agricultural Science. 82 (APR), pp. 193-205. https://doi.org/10.1017/s0021859600059074

Changes in the Nutrient Reserves of the Rothamsted and Woburn Reference Experiment Soils

A - Papers appearing in refereed journals

Williams, R. J. B. 1973. Changes in the Nutrient Reserves of the Rothamsted and Woburn Reference Experiment Soils. Rothamsted Experimental Station Report. 1972 (2), pp. 86-101.

Significance of man-made sources of phosphorus - fertilizers and farming - phosphorus involved in agricultural systems and possibilities of its movement into natural water

A - Papers appearing in refereed journals

Cooke, G. W. and Williams, R. J. B. 1973. Significance of man-made sources of phosphorus - fertilizers and farming - phosphorus involved in agricultural systems and possibilities of its movement into natural water. Water Research. 7 (1-2), pp. 19-33. https://doi.org/10.1016/0043-1354(73)90150-4

Experiments on herbage crops at Saxmundham, 1967-71

A - Papers appearing in refereed journals

Williams, R. J. B. and Cooke, G. W. 1972. Experiments on herbage crops at Saxmundham, 1967-71. Rothamsted Experimental Station Report. 1971 (2), pp. 95-121.

Relationships Between the Composition of Soils and Physical Measurements Made on Them

A - Papers appearing in refereed journals

Williams, R. J. B. 1971. Relationships Between the Composition of Soils and Physical Measurements Made on Them. Rothamsted Experimental Station Report. 1970 (Part 2), pp. 5-35. https://doi.org/10.23637/ERADOC-1-34799

The Chemical Composition of Water from Land Drains at Saxmundham and Woburn, and the Influence of Rainfall Upon Nutrient Losses

A - Papers appearing in refereed journals

Williams, R. J. B. 1971. The Chemical Composition of Water from Land Drains at Saxmundham and Woburn, and the Influence of Rainfall Upon Nutrient Losses. Rothamsted Experimental Station Report. 1970 (Part 2), pp. 36-67. https://doi.org/10.23637/ERADOC-1-34800

Results of the rotation I Experiment at Saxmundham Experimental Station 1964-69

A - Papers appearing in refereed journals

Williams, R. J. B. and Cooke, G. W. 1971. Results of the rotation I Experiment at Saxmundham Experimental Station 1964-69. Rothamsted Experimental Station Report. (Part 2), pp. 68-97. https://doi.org/10.23637/ERADOC-1-34801

Losses of nitrogen and phosphorus from agricultural land

A - Papers appearing in refereed journals

Cooke, G. W. and Williams, R. J. B. 1970. Losses of nitrogen and phosphorus from agricultural land. Water treatment and examination. 19, pp. 253-276.

The effect of traces of beryllium on the growth of kale, grass, and mustard

A - Papers appearing in refereed journals

Williams, R. J. B. and Le Riche, H. H. 1968. The effect of traces of beryllium on the growth of kale, grass, and mustard. Plant and Soil. 29 (2), pp. 317-326. https://doi.org/10.1007/BF01348950

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 effects of changes in soil compaction and porosity on germination, establishment and yield of barley and globe beet

A - Papers appearing in refereed journals

Kubota, T. and Williams, R. J. B. 1967. The effects of changes in soil compaction and porosity on germination, establishment and yield of barley and globe beet. The Journal of Agricultural Science. 68 (2), pp. 227-233. https://doi.org/10.1017/S0021859600016270

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

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 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

A new method for measuring soil stability

A - Papers appearing in refereed journals

Williams, R. J. B. 1963. A new method for measuring soil stability. Chemistry & Industry. pp. 1032-1033.

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 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

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

Measuring soluble phosphorus in soils, comparisons of methods, and interpretation of results

A - Papers appearing in refereed journals

Williams, R. J. B. and Cooke, G. W. 1962. Measuring soluble phosphorus in soils, comparisons of methods, and interpretation of results. The Journal of Agricultural Science. 59 (2), pp. 275-280. https://doi.org/10.1017/S0021859600015318

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

Some effects of farmyard manure and of grass residues on soil structure

A - Papers appearing in refereed journals

Williams, R. J. B. and Cooke, G. W. 1961. Some effects of farmyard manure and of grass residues on soil structure. Soil Science. 92 (1), pp. 30-39.

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

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

Changes in the soil of a long-continued field experiment at Saxmundham, Suffolk

A - Papers appearing in refereed journals

Cooke, G. W., Mattingly, G. E. G. and Williams, R. J. B. 1958. Changes in the soil of a long-continued field experiment at Saxmundham, Suffolk. Journal of Soil Science. 9 (2), pp. 298-305. https://doi.org/10.1111/j.1365-2389.1958.tb01921.x