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Effects of one to six year old ryegrass-clover leys on soil nitrogen and on the subsequent yields and fertilizer nitrogen requirements of the arable sequence winter wheat, potatoes, winter wheat, winter beans (Vicia faba) grown on a sandy loam soil

Published online by Cambridge University Press:  27 March 2009

A. E. Johnston ,
J. McEwen ,
P. W. Lane ,
M. V. Hewitt ,
P. R. Poulton  and
D. P. Yeoman
A. E. Johnston
Affiliation:
Agricultural and Food Research Council, Institute of Arable Crops Research, Rothamsted Experimental Station, Harpenden, Hertfordshire AL5 2JQ, UK
J. McEwen
Affiliation:
Agricultural and Food Research Council, Institute of Arable Crops Research, Rothamsted Experimental Station, Harpenden, Hertfordshire AL5 2JQ, UK
P. W. Lane
Affiliation:
Agricultural and Food Research Council, Institute of Arable Crops Research, Rothamsted Experimental Station, Harpenden, Hertfordshire AL5 2JQ, UK
M. V. Hewitt
Affiliation:
Agricultural and Food Research Council, Institute of Arable Crops Research, Rothamsted Experimental Station, Harpenden, Hertfordshire AL5 2JQ, UK
P. R. Poulton
Affiliation:
Agricultural and Food Research Council, Institute of Arable Crops Research, Rothamsted Experimental Station, Harpenden, Hertfordshire AL5 2JQ, UK
D. P. Yeoman
Affiliation:
Agricultural and Food Research Council, Institute of Arable Crops Research, Rothamsted Experimental Station, Harpenden, Hertfordshire AL5 2JQ, UK
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Summary

The largest yields of wheat and potatoes came from the combination of longer ley plus optimum fertilizer N but yields of winter beans were decreased where N had been given to the previous crops. Without fertilizer N, two year old leys significantly increased yields compared to one year leys and the effect of longer leys was small except for the first wheat, when grain yields were large and plateaued after the three year ley.

Exponential response curves were fitted to the wheat yields and an exponential plus linear trend to the potato yields after each of the leys. Maximum yields and maximum economic yields and their associated N dressings were then estimated. Maximum economic yields of wheat in 1987 ranged from 811 to 914 t/ha grain and the fertilizer N needed declined from 174 kg/ha after the one year ley to 48 kg/ha after the six year ley. For potatoes in 1988, yields ranged from 63 to 71 t/ha tubers but the N required (137–150 kg/ha) varied little with ley age. For winter wheat, in 1989 yields ranged from only 5·51 to 6·99 t/ha grain, because of drought but, as with the potatoes, the N required (203–218 kg/ha) varied little. For each crop the six individual N response curves could be shifted to bring them into coincidence, and the benefits of the ley estimated in terms of a quantity of fertilizer N applied in spring (horizontal shift) and effects other than spring N (vertical shift). The spring N effects relative to the one year ley varied with ley age; for the first wheat the range was from 6 to 126 kg N/ha for the two to six year leys respectively. Spring N effects were negligible, however, for potatoes (average 6 kg/ha) and also for wheat in the third year (6 kg/ha). Benefits other than those which could be ascribed to spring N increased yield of the first wheat, on average, by 0·94 t/ha grain for the two to five year leys; for potatoes they ranged from 3·5 to 8·1 t/ha tubers for the three to six year leys; for the third crop wheat they ranged from 0·86 to 1·49 t/ha grain for the three to six year leys.

On average, the first wheat recovered only 34% of the applied fertilizer N whilst potatoes and the following wheat recovered 55 and 56% respectively. There was a benefit from the longer leys which affected the efficiency with which fertilizer N was used.

Increasing ley age up to five years increased total soil carbon by a maximum of 0·17%C; 18% of the carbon content of the soil in the one year ley plots. This small increase in soil organic matter provided up to 230 kg/ha mineral N in the first autumn after ploughing. Between 17 October 1986 and 27 April 1987 the average loss of NO3-N from soils following three to six year leys was equivalent to 202 kg N/ha, whilst the average uptake of N by 11 May in the above-ground wheat was only 88 kg/ha; the net loss was 114 kg N/ha. A computer simulation, which included mineralization of organic N during this period together with N uptake and nitrate leaching losses, computed a loss of 250 kg N/ha following the six year ley, and this would have given 400 mg NO3/1 in the 275 mm through drainage that winter.

Type
Crops and Soils
Information
The Journal of Agricultural Science , Volume 122 , Issue 1 , February 1994 , pp. 73 - 89
Copyright
Copyright © Cambridge University Press 1994

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References

Addiscott, T. M. & Whitmore, A. P. (1987). Computer simulation of changes in soil mineral nitrogen and crop nitrogen during autumn, winter and spring. Journal of Agricultural Science, Cambridge 109, 141–157.CrossRefGoogle Scholar
Addiscott, T. M. & Whitmore, A. P. (1991). Simulation of solute leaching in soils of differing permeabilities. Soil Use and Management 7, 94–102.CrossRefGoogle Scholar
Boyd, D. A. (1968). Experiments with ley and arable farming systems. Rothamsted Experimental Station, Report for 1967. 316–331.Google Scholar
Catt, J. A., Weir, A. H., King, D. W., Le Riche, H. H., Pruden, G. & Norrish, R. E. (1977). The soils of Woburn Experimental Farm II. Lansome, White Horse and School Fields. Rothamsted Experimental Station, Report for 1976, Part 2, 5–32.Google Scholar
Crowther, E. M. (1936). The soils of the Woburn plots. In Fifty Years of Field Experiments at the Woburn Experimental Farm (Eds Russell, E. J. & Voelcker, J. A.), pp. 315–346. London: Longmans Green & Co.Google Scholar
Dyke, G. V., Patterson, H. D. & Barnes, T. W. (1977). The Woburn long-term experiment on green manuring, 1936–67; results with barley. Rothamsted Experimental Station, Report for 1976, Part 2, 119–152.Google Scholar
Dyke, G. V., George, B. J., Johnston, A. E., Poulton, P. R. & Todd, A. D. (1983). The Broadbalk Wheat Experiment 1968–78: yields and plant nutrients in crops grown continuously and in rotation. Rothamsted Experimental Station. Report for 1982. Part 2, 5–44.Google Scholar
Eagle, D. J. (1975). ADAS ley fertility experiments. In Soil Physical Conditions and Crop Production. Ministry of Agriculture, Fisheries and Food Technical Bulletin No.29, pp. 344–359. London: HMSO.Google Scholar
George, B. J. (1984). Design and interpretation of nitrogen response experiments. In The Nitrogen Requirement of Cereals. Ministry of Agriculture, Fisheries and Food. Reference Book 385. pp. 133–149. London: HMSO.Google Scholar
Goulding, K. W. T., Johnston, A. E., Webster, C. P. & Howe, M. T. (1990). Losses of nitrate from arable land by leaching and their effect in nitrates in drainage and groundwater. In Fertilization and the Environment (Eds Merckx, R., Vereeckers, H. & Vlassak, K.), pp. 26–34. Belgium: Leuven University Press.Google Scholar
Igbokwe, M. C. (1977). Nutrient cycles in cereals grown continuously and in rotation on the light sandy loam soil at Woburn with special reference to nitrogen fertilising. PhD thesis, University of London.Google Scholar
Johnston, A. E. (1971). The effect of ley and arable systems of farming on soil potassium reserves. In Potassium and Systems of Grassland Farming. Colloquium Proceedings No. I, pp. 135–139. Henley-on-Thames: The Potassium Institute Ltd.Google Scholar
Johnston, A. E. (1973). The effects of ley and arable cropping systems on the amounts of soil organic matter in the Rothamsted and Woburn Ley Arable experiments. Rothamsted Experimental Station, Report for 1972, Part 2, 131–159.Google Scholar
Johnston, A. E. (1975). Experiments made on Stackyard Field, Woburn, 1876–1974 I. History of the field, details of the cropping and manuring and the yields in the Continuous Wheat and Barley Experiments. Roihamsted Experimental Station, Report for 1974, Part 2, 29–44.Google Scholar
Johnston, A. E. (1987). Effects of soil organic matter on yields of crops in long-term experiments at Rothamsted and Woburn. INTECOL Bulletin 15, 9–16.Google Scholar
Johnston, A. E. (1991). Soil fertility and soil organic matter. In Advances in Soil Organic Matter Research: the Impact on Agriculture and the Environment (Ed. Wilson, W. S.), pp. 299–314. Cambridge: Royal Society of Chemistry.Google Scholar
Lawes, J. B. (1888). The permanent wheat and barley experiments in Stackyard Field, Woburn. Journal of the Royal Agricultural Society, Second Series 24, 1–8.Google Scholar
Litchfield, M. H. (1967). The automated analysis of nitrite and nitrate in blood. Analyst 92, 132–136.CrossRefGoogle ScholarPubMed
Mattingly, G. E. G., Chater, M. & Poulton, P. R. (1974). The Woburn Organic Manuring experiment 1964–72. Rothamsted Experimental Station, Report for 1973, Part 2, 98–151.Google Scholar
Mattingly, G. E. G., Chater, M. & Johnston, A. E. (1975). Experiments made on Stackyard Field, Woburn, 1876–1974 III. Effects of NPK. fertilisers and farmyard manure on soil carbon, nitrogen and organic phosphorus. Rothamsted Experimental Station, Report for 1974, Part 2, 61–77.Google Scholar
McEwen, J. (1970). Fertilizer nitrogen and growth regulators for field beans (Vicia faba L.). Journal of Agricultural Science, Cambridge 74, 61–72.CrossRefGoogle Scholar
McEwen, J., Day, W., Henderson, I. F., Johnston, A. E., Plumb, R. T., Poulton, P. R., Spaull, A. M., Stribley, D. P., Todd, A. D. & Yeoman, D. P. (1989). Effects of irrigation, N fertilizer, cutting frequency and pesticides on ryegrass, ryegrass-clover mixtures, clover and lucerne grown on heavy and light land. Journal of Agricultural Science, Cambridge 112, 227–247.CrossRefGoogle Scholar
Rothamsted Experimental Station (1977, 1978, 1979, 1980). Intensive Cereals, Yields of the Field Experiments, 77/W/RN/13, 78/W/RN/13, 79/W/RN/13, 80/W/RN/13.Google Scholar
Rothamsted Experimental Station (1981, 1982, 1983, 1984, 1985, 1986). Intensive Cereals, Yields of the Field Experiments, 81/W/RN/13, 82/W/RN/13, 83/W/RN/13, 84/W/RN/13, 85/W/RN/13, 86/W/RN/13.Google Scholar
Rothamsted Experimental Station (1987, 1988, 1989, 1990). Intensive Cereals, Yields of the Field Experiments, 87/W/RN/13, 88/W/RN/13, 89/W/RN/13, 90/W/RN/13.Google Scholar
Thorne, G. N., Welbank, P. J., Widdowson, F. V., Penny, A., Todd, A. D. & Weir, A. H. (1988). Contrast between sandy and clay soils in the effects of various factors on the growth, nitrogen uptake and yield of winter wheat in three years. Journal of Agricultural Science, Cambridge 110, 119–140.CrossRefGoogle Scholar
Varley, J. A. (1966). Automatic methods for the determination of nitrogen, phosphorus and potassium in plant material. Analyst 91, 119–126.CrossRefGoogle Scholar
Williams, R. J. B. (1975). The influence of soil type and manuring on measurements of physical properties and nutrient status of some British soils. In Soil Physical Conditions and Crop Production. Ministry of Agriculture, Fisheries and Food. Technical Bulletin No. 29, pp. 324–343. London: HMSO.Google Scholar