Browsing Research publications by Author "Leech, P. K."
Now showing items 1-5 of 5
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The effect of climate on the Release of Ascospores of Leptosphaeria maculans (Stem Canker of Oilseed Rape)
West, Jon S.; Evans, Neal; Leech, P. K.; Fitt, Bruce D.L. (1999) -
The effects of rainfall on numbers of air-borne ascospores of Leptosphaeria maculans and the development of phoma leaf lesions on winter oilseed rape
West, Jon S.; Leech, P. K.; Fitt, Bruce D.L. (1998) -
Effects of timing of Leptosphaeria maculans ascospore release and fungicide regime on phoma leaf spot and phoma stem canker development on winter oilseed rape (Brassica napus) in southern England
West, Jon S.; Fitt, Bruce D.L.; Leech, P. K.; Biddulph, J. E.; Huang, Yongju; Balesdent, M. H. (2002-08)At Rothamsted during 1997/98, 1998/99 and 1999/2000 winter oilseed rape growing seasons, numbers of air-borne ascospores of Leptosphaeria maculans were often > 4 m(-3) from autumn (September/October) to spring (April/May), ... -
New perspectives on the epidemiology and management of phoma stem canker of winter oilseed rape in England
West, Jon S.; Huang, Yongju; Steed, J. M.; Leech, P. K.; Fitt, Bruce D.L.; Gladders, P. (British Crop Protection Council, 2002)The epidemiology of phoma stem canker (Leptosphaeria maculans) on winter oilseed rape will be discussed in relation to results of experiments comparing fungicide regimes in southern England. Factors affecting the severity ... -
Optimising the use of fungicides to control stem canker of oilseed rape
West, Jon S.; Leech, P. K.; Fitt, Bruce D.L.; Welham, S.J.; Penaud, A.; Peres, A.; Poisson, B. (1999)Ascospores of Leptosphaeria maculans infect leaves of oilseed rape to cause leaf spots, from which the fungus can grow to infect the stem. Yield losses due to early senescence and lodging result if the stem infections reach ...