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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 ... -
Diagnosis of light leaf spot (Pyrenopeziza brassicae) on winter oilseed rape (Brassica napus) in the UK
Fitt, Bruce D.L.; Doughty, K.J.; Gladders, P.; Steed, J.M.; Sutherland, K.G. (1998-10)Light leaf spot lesions were generally first observed as light green areas on leaves of UK winter oilseed rape crops in January or February and later became brittle and bleached. Elongated lesions, which were brown with ... -
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) -
Effects of light leaf spot (Pyrenopeziza brassicae) on yield of winter oilseed rape (Brassica napus)
Su, H.; Fitt, Bruce D.L.; Welham, S.J.; Sansford, C.E.; Sutherland, K.G. (1998-06)The relationship between development of light leaf spot and yield loss in winter oilseed rape was analysed, initially using data from three experiments at sites near Aberdeen in Scotland in the seasons 1991/92, 1992/93 and ... -
Empirical models for prediction of regional light leaf spot (Pyrenopeziza brassicae) incidence on winter oilseed rape in the UK
Welham, S.J.; Turner, J.A.; Fitt, Bruce D.L.; Gladders, P.; Sutherland, K.G. (1998)Empirical models have been used to forecast plant disease epidemics and guide spray decisions. Light leaf spot (Pyrenopeziza brassicae) is a serious disease of winter oilseed rape in the UK, showing seasonal and regional ... -
Epidemiology, forecasting and management of winter oilseed rape diseases in the UK
Fitt, Bruce D.L.; Gladders, P.; Sutherland, K.G.; Turner, J.A.; Welham, S.J. (1999)Survey results show that the most serious diseases on winter oilseed rape in the UK are light leaf spot (Pyrenopeziza brassicae) and stem canker (Leptosphaeria maculans), then stem rot (Sclerotinia sclerotiorum) and dark ... -
Methods for assessment of light leaf spot (Pyrenopeziza brassicae) on winter oilseed rape (Brassica napus) in the UK
Fitt, Bruce D.L.; Doughty, K.J.; Gilles, T.; Gladders, P.; Steed, J.M.; Su, H.; Sutherland, K.G. (1998-12)Light leaf spot (Pyrenopeziza brassicae) was assessed as % plants with light leaf spot, % leaves with light leaf spot or % leaf area with light leaf spot in winter oilseed rape field experiments done at different sites ... -
Oilseed rape : disease development, forecasting and yield loss relationships
Sansford, C.E.; Fitt, Bruce D.L.; Gladders, P.; Lockley, K. D.; Sutherland, K.G. (HGCA, 1996-02)A series of fourteen replicated plot scale experiments was established between 1991 and 1994 to determine the effect of disease on the yield of winter oilseed rape and the economic threshold and optimum fungicide timings ... -
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) -
Pest and disease management system for supporting winter oilseed rape decisions (PASSWORD) – validation phase
Gladders, P.; Dyer, Chris; Fitt, Bruce D.L.; Evans, Neal; van den Bosch, Frank; Baierl, A.; Turner, J.; Walters, K.; Northing, P.; Sutherland, K.G.; Oxley, S. J. P.; Foster, V.; Ellerton, D.; Myers, N.; Selley, Andrew; Ashworth, M.; Hall, B. (HGCA, 2005)Pests and particularly diseases cause serious loss of yield and quality in winter oilseed rape estimated to exceed £80 million/annum in some years. These losses have occurred despite an annual expenditure of about £3.5 ... -
Predicting risk of severe light leaf spot (Pyrenopeziza brassicae) on winter oilseed rape in the UK
Fitt, Bruce D.L.; Gladders, P.; Turner, J.A.; Sutherland, K.G.; Welham, S.J. (1996) -
Prospects for developing a forecasting scheme to optimize use of fungicides for disease control on winter oilseed rape in the UK
Fitt, Bruce D.L.; Gladders, P.; Turner, J.A.; Sutherland, K.G.; Welham, S.J.; Davies, J.M.L. (Association of Applied Biologists, 1997) -
Relationships between regional weather and incidence of light leaf spot (Pyrenopeziza brassicae) on winter oilseed rape in England and Wales
Welham, S.J.; Fitt, Bruce D.L.; Turner, J.A.; Gladders, P.; Sutherland, K.G. (Association of Applied Biologists, 1999) -
Using disease survey data to develop schemes for predicting epidemics of light leaf spot (Pyrenopeziza brassicae) on winter oilseed rape in England and Wales
Turner, J.A.; Welham, S.J.; Fitt, Bruce D.L.; Gladders, P.; Sutherland, K.G. (1997)