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Multifactorial experimentation on continuous winter wheat grown in sandy clay soil at Saxmundham, Suffolk

Published online by Cambridge University Press:  27 March 2009

A. E. Johnston
Affiliation:
Rothamsted Experimental Station, Harpenden, Herts. AL5 2JQ
A. Penny
Affiliation:
Rothamsted Experimental Station, Harpenden, Herts. AL5 2JQ

Summary

We present results from an experiment at Saxmundham measuring the effects of growing different numbers of successive winter wheat crops, each year, from 1971 to 1976; it followed five cropping sequences introduced from 1966 to 1970.

From 1971 to 1973 four seed rates, two row spacings and three nitrogen rates were tested in all combinations with four of the previous cropping sequences. The remaining sequence was sown traditionally for continuity. Number of ears, leaf area, yield and nutrient content showed little benefit from increasing or decreasing seed rate, around that usually sown. Rows 15 cm apart gave the largest yield independently of N, because they produced most ears. There was no loss in yield from growing up to eight consecutive crops of winter wheat. 100 kg N/ha was sufficient for maximum yield.

From 1974 to 1976 two varieties of different potential (Cappelle-Desprez and Maris Huntsman), chlormequat chloride (CCC), three amounts of N, as single, or as divided dressings, were tested in all combinations with the four cropping sequences. The fifth sequence again was sown traditionally, but with or without autumn-applied N. Maris Huntsman gave a grain yield only 0·22 t/ha larger (4·5%) than that of Cappelle-Desprez, and mean yields were larger (also by 4·5%) where CCC was given. Divided dressings of N increased yields by 0·11 t/ha (2·2%). The mean increase in yield from adopting all three improvements was 0·5 t/ha (or 11%). Yields of the 10th and 11th consecutive wheats declined, probably because black grass (Alopecurus myosuroides) became abundant. There was a good inverse relationship between losses of N in drainage during winter and subsequent yield and grain nitrogen uptake, which helped to explain large yield variations from year to year.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1980

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References

Boyd, D. A. & Trist, P. J. O. (1966). The Saxmundham rotation experiments: Rotation II, 1899–1952. Journal of Agricultural Science, Cambridge 66, 337339.CrossRefGoogle Scholar
Cooke, G. W. (1975). The achievements of ten years work at Saxmundham Experimental Station. Rothamsted Experimental Station, Report for 1974, Part 2, pp. 187194.Google Scholar
Dyke, G. V. & Slope, D. B. (1978). Effects of previous legume and oat crops on grain yield and take-all in spring barley. Journal of Agricultural Science, Cambridge 91, 443451.CrossRefGoogle Scholar
Hanley, F. & Ridgman, W. J. (1978). Some effects of growing winter wheat continuously. Journal of Agricultural Science, Cambridge 90, 517—521.CrossRefGoogle Scholar
Hodge, C. A. H. (1972). The soils at Saxmundham Experimental Station. Rothamsted Experimental Station, Report for 1971, Part 2, pp. 143148.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 fertilizing. Ph.D. thesis, University of London.Google Scholar
Johnston, A. E., Poulton, P. R. & Williams, R. J. B. (1979). Results from an experiment on all-grass and grass-olover leys at Saxmundham, 1969–76 and changes in soil pH, nitrogen, phosphorus and potassium due to cropping and manuring. Rothamsted Experimental Station, Report for 1978, Part 2, pp. 99117.Google Scholar
Moffatt, J. R. & Widdowson, F. V. (1967). Methods of sowing and manuring winter wheat and spring barley at Rothamsted and Woburn 1964–66. Rothamsted Experimental Station, Report for 1966, pp. 236240.Google Scholar
Mundy, E. J. & Selman, M. (1973). Intensification of cereals: cereal monoculture duration and nitrogen rate. Part I. Winter wheat. Experimental Husbandry 25, 2240.Google Scholar
National Institute of Agricultural Botany (1974). Recommended varieties of cereals. Farmers Leaflet No. 8.Google Scholar
Penny, A., Widdowson, F. V. & 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. Journal of Agricultural Science, Cambridge 90, 509516.CrossRefGoogle Scholar
Slope, D. B., Etheridge, J. & Williams, R. J. B. (1973). Grain yield and the incidence of tako-all and eyespot in winter wheat grown in different crop sequences at Saxmundham. Rothamsted Experimental Station, Report for 1972, Part 2, pp. 160167.Google Scholar
Welbank, P. J., Glbb, M. J., Taylor, P. J. & Williams, E. D. (1974). Root growth of cereal crops. Rothamsted Experimental Station, Report for 1973, pp. 2666.Google Scholar
Wickens, R. (1967). Narrow-row drilling or broadcasting cereal seed. E.H.F. and E.H.S. Eighth Progress Report pp. 2528.Google Scholar
Widdowson, F. V. (1973). Results from experiments with wheat and barley measuring the effects of paths on yield. Experimental Husbandry 23, 1620.Google Scholar
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 and Industry, 17351736.Google Scholar
Williams, R. J. B. (1976). The chemical composition of water from land drainage at Saxmundham and Woburn (1970–75). Rothamsted Experimental Station, Report for 1975, Part 2, pp. 3762.Google Scholar
Zadoks, J. C., Chang, T. T. & Konzak, C. F. (1974). A decimal code for the growth stages of cereals. Weed Research 14, 416421.CrossRefGoogle Scholar