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Influence of nitrogen on the development of Septoria epidemics in winter wheat

Published online by Cambridge University Press:  27 March 2009

M. H. Leitch  and
P. D. Jenkins
M. H. Leitch
Affiliation:
Department of Agricultural Sciences, University of Wales, Aberystwyth, Dyfed SY23 3DD, UK
P. D. Jenkins
Affiliation:
Department of Agricultural Sciences, University of Wales, Aberystwyth, Dyfed SY23 3DD, UK
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Summary

Field experiments were undertaken at the University of Wales, Aberystwyth over two seasons to investigate the effects of N fertilizer rate and timing on the development of Septoria diseases (principally Septoria tritici) in winter wheat and its subsequent effect on crop growth. Rates of 100, 200 and 300 kg/ha N were applied at GS23, GS30, or split (GS23/30/38) in 1985/86 and 100 and 250 kg/ha N at GS23, GS30, GS23/30, or GS23/30/37 in 1987/88. Foliar diseases were allowed to develop or were controlled with fungicide. Early disease levels were temporarily enhanced soon after N application and were greater at the higher rates of N. In April and June a significant correlation between disease infection and concentration of N in leaf tissue was shown. Despite differences in the level of early infection, dry matter production up to and including anthesis was unaffected by disease. Infection during grain filling caused premature senescence of the flag leaf which significantly reduced grain yield, primarily through a reduction in grain size. Loss of yield was directly related to severity of disease on the flag leaf in early July, with a yield loss of 0·45% for every 1% increase in disease infection. The severity of Septoria post-anthesis increased with increasing rate of fertilizer N by an average of 11·1% per 100 kg/ha N (translating to a potential yield loss of 5% for each 100 kg/ha N given as fertilizer), but was unaffected by its timing of application.

Type
Crops and Soils
Information
The Journal of Agricultural Science , Volume 124 , Issue 3 , June 1995 , pp. 361 - 368
Copyright
Copyright © Cambridge University Press 1995

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References

Bayles, R. A. (1990). Investigations of changes in varietal resistance to Septoria tritici as a factor contributing to the increased national importance of the disease. Home Grown Cereals Authority Project Report No. 25. Londons: HGCA.Google Scholar
Bayles, R. A. (1991). Research note: Varietal resistance as a factor contributing to the increased importance of Septoria tritici Rob. and Desm. in the UK wheat crop. Plant Varieties and Seeds 4, 177–183.Google Scholar
Brokenshire, T. (1974). Predisposition of wheat to Septoria tritici infection following attack by Erysiphe. Transactions of the British Mycological Society 63, 393–397.CrossRefGoogle Scholar
Brown, J. S. & Paddick, R. G. (1980). Surveys of speckled leaf blotch and other foliar diseases of wheat in Victoria, 1974 to 1978. Australian Journal of Experimental Agriculture and Animal Husbandry 20, 94–96.CrossRefGoogle Scholar
Cornish, P. S., Baker, G. R. & Murray, G. M. (1990). Physiological responses of wheat (Triticum aestivum) to infection with Mycosphaerella graminicola causing Septoria tritici blotch. Australian Journal of Agricultural Research 41, 317–327.CrossRefGoogle Scholar
Gallagher, J. N., Biscoe, P. V. & Hunter, B. (1976). Effects of drought on grain growth. Nature 264, 541–542.CrossRefGoogle Scholar
Gheorghies, C. (1978). The economic importance and control of Septoria tritici on wheat. Lucrᾰri Ştiinƫifice 18/19, 27–33.Google Scholar
Holmes, S. J. I. & Colhoun, J. (1974). Infection of wheat by Septoria nodorum and S. tritici in relation to plant age, air temperature and relative humidity. Transactions of the British Mycological Society 63, 329–338.CrossRefGoogle Scholar
James, W. C. (1971). The illustrated series of assessment keys for plant diseases, their properties and usage. Canadian Plant Disease Survey 51, 39–65.Google Scholar
Jenkins, J. E. E. & Morgan, W. (1969). The effect of Septoria diseases on the yield of winter wheat. Plant Pathology 18, 152–156.CrossRefGoogle Scholar
Jordan, V. W. L., Stinchcombe, G. R. & Hutcheon, J A. (1987). Interactions of fungicide, nitrogen and plant growth regulators. In Long Ashton Research Station Annual Report 1986, pp. 27–28.Google Scholar
King, J. E., Cook, R. J. & Melville, S. C. (1983). A review of Septoria diseases of wheat and barley. Annals of Applied Biology 103, 345–373.CrossRefGoogle Scholar
Melville, S. C. & Jemmett, J. L. (1971). The effect of glume blotch on the yield of winter wheat. Plant Pathology 20, 14–17.CrossRefGoogle Scholar
Prew, R. D., Church, B. M., Dewar, A. M., Lacey, J., Penny, A., Plumb, R. T., Thorne, G. N., Todd, A. D. & Williams, T. D. (1983). Effects of eight factors on the growth and nutrient uptake of winter wheat and on the incidence of pests and diseases. Journal of Agricultural Science, Cambridge 100, 363–382.CrossRefGoogle Scholar
Prew, R. D., Church, B. M., Dewar, A. M., Lacey, J., Magan, N., Penny, A., Plumb, R. T., Thorne, G. N., Todd, A. D. & Williams, T. D. (1985). Some factors limiting the growth and yield of winter wheat and their variation in two seasons. Journal of Agricultural Science, Cambridge 104, 135–162.CrossRefGoogle Scholar
Royle, D. J., Shaw, M. W. & Cook, R. J. (1986). Patterns of development of Septoria nodorum and S. tritici in some winter wheat crops in Western Europe, 1981–83. Plant Pathology 35, 466–476.Google Scholar
Rudeforth, C. C. (1974). Soils in Dyfed. II. Soil Survey Record No. 24. Harpenden: Soil Survey of England and Wales.Google Scholar
Shaw, M. W. & Royle, D. J. (1989). Airborne inoculum as a major source of Septoria tritici (Mycosphaerella graminicola) infections in winter wheat crops in the UK. Plant Pathology 38, 35–43.CrossRefGoogle Scholar
Shaw, M. W. & Royle, D. J. (1993). Factors determining the severity of epidemics of Mycosphaerella graminicola (Septoria tritici) on winter wheat in the UK. Plant Pathology 42, 882–899.CrossRefGoogle Scholar
Thomas, M. R., Cook, R. J. & King, J. E. (1989). Factors affecting development of Septoria tritici in winter wheat and its effect on yield. Plant Pathology 38, 246–257.CrossRefGoogle Scholar
Wainshilbaum, S. J. & Lipps, P. E. (1991). Effect of temperature and growth stage of wheat on development of leaf and glume blotch caused by Septoria tritici and S. nodorum. Plant Disease 75, 993–998.CrossRefGoogle Scholar
Zadoks, J. C., Chang, T. T. & Konzak, C. F. (1974). A decimal code for the growth stages of cereals. Weed Research 14, 415–421.CrossRefGoogle Scholar
Ziv, O., Sacks, J. M. & Eyal, Z. (1981). Inheritance of tolerance to Septoria leaf blotch of wheat. Phytopathology 71, 119–123.CrossRefGoogle Scholar