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Effects of time and rate of nitrogen application on tillering, ‘sharp eyespot’ (Rhizoctonia solani) and yield in winter wheat

Published online by Cambridge University Press:  27 March 2009

P. M. Bremner
P. M. Bremner
Affiliation:
University of Nottingham School of Agriculture, Sutton Bonington, Loughborough, Leics*
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Summary

Various rates of nitrogen fertilizer were applied in early and late spring to two densities of winter wheat to examine their effects on grain yield and its components. A severe attack of ‘sharp eyespot’ (Rhizoctonia solani) allowed an assessment of the effects of the treatments on the incidence of this disease.

The disease level was much higher where nitrogen was applied early and increased with increase in nitrogen up to 120 units applied; it was slightly higher at the higher density. Grain yield was slightly greater where nitrogen was applied late; early application gave more, but smaller, ears. Main shoots produced at least 70% of the grain in the high-density plots but less than 50% at the low density. Tillers appearing after early March contributed little to grain yield at the higher density but substantially at the lower one. Tillers produced after early April died without heading. In general, the chances of survival of a tiller diminished with delay in the time of its appearance, but some early tillers died while later ones survived and produced ears. The chances of survival of later tillers were greater at low density and high rates of nitrogen.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 72 , Issue 2 , April 1969 , pp. 273 - 280
Copyright
Copyright © Cambridge University Press 1969

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References

REFERENCES

Blackett, G. A. (1957). The effect of rate and time of application of nitrogen on the yield of winter wheat. Emp. J. exp. Agric. 25, 19.Google Scholar
Bullen, E. R. (1964). Some problems in intensive cereal production. Outl. Agric. 5, 64.CrossRefGoogle Scholar
Bullen, E. R. & Lessells, W. J. (1957). The effect of nitrogen on cereal yields. J. agric. Sci., Oamb. 49, 319.CrossRefGoogle Scholar
Bunting, A. H. & Drennan, D. S. H. (1966). Some aspects of the morphology and physiology of cereals in the vegetative phase. In The Growth of Cereals and Grasses, Proc. 12th Easter School in Agricultural Science, University of Nottingham, ed. Milthorpe, and Ivins, . London: Butterworths.Google Scholar
Engledow, F. L. et al. (1923–1930). Investigations on yields in the cereals. J. agric. Sci., Camb. 13–20.Google Scholar
Glynne, M. D. (1951). Effects of cultural treatments on wheat on the incidence of eyespot, lodging, take all and weeds. Ann. appl. Biol. 38, 665.CrossRefGoogle Scholar
Holmes, J. C. & Tahir, W. M. (1956). The effect of some factors on growth, development and yield of winter wheat. J. agric. Sci., Camb. 48, 115.CrossRefGoogle Scholar
Hopkinson, J. M. (1964). Studies on the expansion of the leaf surface. IV. The carbon and phosphorus aconomy of a leaf. J. exp. Bot. 15, 125.CrossRefGoogle Scholar
Krishnamurthy, K. (1963). Studies in the physiology of yield in cereals Ph.D. Thesis, University of Reading.Google Scholar
Pitt, D. (1964a). Studies on sharp eyespot disease in cereals. I. Disease symptoms and pathogenicity of isolates of Rhizoctonia solani Kuhn. Ann. appl. Biol. 54, 77.CrossRefGoogle Scholar
Pitt, D. (1964b). Studies on sharp eyespot disease in cereals. II. Viability of sclerotia: persistence of the causal fungus Rhizoctonia solani Kuhn. Ann. appl. Biol. 54, 231.CrossRefGoogle Scholar
Salt, G. A. (1955). The effects of nitrogen applied at different dates and of other cultural treatments on eyespot, lodging and yield of winter wheat. Field experiment. 1952. J. agric. Sci., Camb. 46, 407.CrossRefGoogle Scholar
Thorne, G. N. (1962). Effect of applying nitrogen to cereals as a top dressing in the spring or at ear emergence. J. agric. Sci., Camb. 58, 89.CrossRefGoogle Scholar
Thorne, G. N. & Watson, D. J. (1955). The effect on yield and leaf area of wheat of applying nitrogen as a top-dressing in April or in sprays at ear emergence. J. agric. Sci., Camb. 46, 449.CrossRefGoogle Scholar
Watson, D. J. (1936). The effect of applying a nitrogenous fertilizer to wheat at different stages of growth. J. agric. Sci., Camb. 26, 391.CrossRefGoogle Scholar
Watson, D. J. (1939). Field experiments on the effect of applying a nigrogenous fertilizer to wheat at different stages of growth. J. agric. Sci., Camb. 29, 379.CrossRefGoogle Scholar