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Colonization of winter oilseed rape tissues by A/Tox(+) and B/Tox(0) Leptosphaeria maculans (phoma stem canker) in France and England
West, Jon S.; Balesdent, M. H.; Rouxel, T.; Narcy, J. P.; Huang, Yongju; Roux, J.; Steed, J. M.; Fitt, Bruce D.L.; Schmit, J. (2002-06)The colonization of winter oilseed rape plants and epidemiology of phoma stem canker differed between A/Tox(+) and B /Tox(0) Leptosphaeria maculans. In France and England, where plant colonization was investigated during ... -
Development and control of light leaf spot (Pyrenopeziza brassicae) epidemics in winter oilseed rape in the UK
Sutherland, K.G.; Fitt, Bruce D.L.; Steed, J. M.; Welham, S.J.; Gladders, P.; Turner, J.A. (British Crop Protection Council, 1998) -
Development of a decision support system for phoma and light leaf spot in winter oilseed rape (PASSWORD project)
Gladders, P.; Dyer, Chris; Fitt, Bruce D.L.; Evans, Neal; van den Bosch, Frank; Steed, J. M.; Baierl, A.; Turner, J. D.; Walters, K.; Northing, P.; Sutherland, K.G.; Campbell , S.; Ellerton, D.; Selley, Andrew; Hall, B.; Naylor, D.; Parker, C. (HGCA, 2004-12-14)Pests and diseases in winter oilseed rape cause serious loss of yield and quality. Losses, predominantly from diseases, are estimated to exceed £80 million/annum in some years. These losses have occurred despite an annual ... -
Development of a system for forecasting severe light leaf spot in winter oilseed rape
Sutherland, K.G.; Fitt, Bruce D.L.; Gladders, P.; Steed, J. M.; Turner, J.A.; Welham, S.J. (1998)In the UK, an estimated £3-9 M are spent each year on fungicides to control winter oilseed rape diseases, but losses in excess of £30 M still occur [1]. Light leaf spot (Pyrenopeziza brassicae) is one of the major diseases ... -
Development of phoma canker (Leptosphaeria maculans) on stems of winter oilseed rape in England in relation to thermal time
Fitt, Bruce D.L.; Sun, P.; Steed, J. M.; Toscano-Underwood, C.; West, Jon S. (2003) -
Effects of light leaf spot (Pyrenopeziza brassicae) infection on canopy size and yield of oilseed rape
Lunn, G. D.; Steed, J. M.; Baierl, A.; Evans, Neal; Fitt, Bruce D.L.; Gladders, P.; Stokes, D. T. (British Crop Protection Council, 2002-11) -
Effects of light leaf spot (Pyrenopeziza brassicae) infection on winter survival and yield of oilseed rape (Brassica napus)
Baierl, A.; Evans, Neal; Steed, J. M.; Fitt, Bruce D.L.; Sutherland, K.G. (British Crop Protection Council, 2002-11) -
Improving stem canker control in winter oilseed rape by accurate timing of fungicide applications based on disease forecasting
Gladders, P.; Green, M. R.; Steed, J. M.; West, Jon S.; Fitt, Bruce D.L. (HGCA, 2001)This three year project focused on improving strategies for control of canker (Leptosphaeria maculans) in winter oilseed rape. There were three main objectives, which were addressed using historical data and field experiments: ... -
Interactive forecasting of light leaf spot (Pyrenopeziza brassicae) risk for winter oilseed rape on the internet
Evans, Neal; Steed, J. M.; Welham, S.J.; Antoniw, J.F.; Baierl, A.; Turner, J.A.; Gladders, P.; Fitt, Bruce D.L. (2003) -
Leptosphaeria maculans (stem canker) on winter oilseed rape in England : some relationships between plant and pathogen development
Steed, J. M.; Fitt, Bruce D.L. (2003) -
Maturation of Leptosphaeria maculans pseudothecia in relation to forecasting phoma leaf spots (stem canker) on oilseed rape
Huang, Yongju; Fitt, Bruce D.L.; Steed, J. M.; Hall, Avice (2003) -
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 fungicide timing for controlling light leaf spot (Pyrenopeziza brassicae) on winter oilseed rape in the UK
Steed, J. M.; Fitt, Bruce D.L.; Gladders, P.; Sutherland, K.G. (Association of Applied Biologists, 1999) -
Patterns of ascospore release in relation to phoma stem canker epidemiology in England (Leptosphaeria maculans) and Poland (Leptosphaeria biglobosa)
Huang, Yongju; Fitt, Bruce D.L.; Jedryczka, M.; Dakowska, S.; West, Jon S.; Gladders, P.; Steed, J. M.; Lil, Z. Q. (2005-03)Experiments over five growing seasons at Rothamsted (1998/99-2002/03), four seasons at Boxworth (1998/99, 1999/2000, 2001/02, 2002/03) in England (Leptosphaeria maculans) and three seasons (1998/99-2000/01) at Poznan in ... -
Preliminary evaluation of root disease of winter oilseed rape in the UK
Evans, Neal; Steed, J. M.; Fitt, Bruce D.L.; Norman, K.; Bryson, R.; Alford, J.; Cavell, P. (HGCA, 2003-03-01)During the 2000/1 season, significant variability in the senescence of oilseed rape (OSR) stems was observed in Velcourt-managed fields. These symptoms tend to occur more in the southern part of the country, i.e. Kent and ... -
Relating plant and pathogen development to optimise fungicide control of phoma stem canker (Leptosphaeria maculans) on winter oilseed rape (Brassica napus)
Steed, J. M.; Baierl, Andreas; Fitt, Bruce D.L. (2007-08)In winter oilseed rape experiments at Rothamsted in 2000/01 to 2002/03 growing seasons, the severity of phoma stem canker epidemics in summer depended on the timing of phoma leaf spot epidemics in the previous autumn, and ... -
Relation between light leaf spot (Pyrenopeziza brassicae), pod canopy size and winter oilseed rape yield in England
Fitt, Bruce D.L.; Lunn, G. D.; Steed, J. M.; Baierl, A.; Evans, Neal; Gladders, P. (2003) -
The roles of ascospores and conidia of Pyrenopeziza brassicae in light leaf spot epidemics on winter oilseed rape (Brassica napus) in the UK
Gilles, T.; Fitt, Bruce D.L.; McCartney, H. A.; Papastamati, K.; Steed, J. M. (2001)Ascospores of Pyrenopeziza brassicae were produced in apothecia (cup-shaped ascomata) on oilseed rape debris. The conidia, which were morphologically identical to the ascospores, were produced in acervular conidiomata on ... -
Use of fungicides to control early and late epidemics of stem canker (Leptosphaeria maculans) in winter oilseed rape in England
Gladders, P.; McDonough, S.; Fitt, Bruce D.L.; Steed, J. M.; West, Jon S. (2003)