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Browsing by Author "Evans, N."
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Altered distribution and life cycles of major pathogens in Europe
Evans, N.; Gladders, P.; Fitt, Bruce D.L.; Tiedemann, A. V. (DPG Selbstverlag, 2009)Climate is a major determinant of crop productivity. Besides its direct impact on plant growth it has a major effect on the prevalence and incidence of plant diseases. The sensitivity of pathogens to climate is pronounced. ... -
Comparative epidemiology of Pyrenopeziza brassicae (light leaf spot) ascospores and conidia from Polish and UK populations
Karolewski, Z.; Evans, N.; Fitt, Bruce D.L.; Baierl, A.; Todd, A.D.; Foster, S.J. (2004-02)Despite differences in climate and in timing of light leaf spot epidemics between Poland and the UK, experiments provided no evidence that there are epidemiological differences between populations of Pyrenopeziza brassicae ... -
Development and uptake of a scheme for predicting risk of severe light leaf spot on oilseed rape
Evans, N.; Welham, S.J.; Antoniw, J.F.; Fitt, Bruce D.L. (2006-12)To reduce reliance on fungicides for disease control on oilseed rape, Decision Support Systems (DSS) are being developed to guide fungicide applications as part of an integrated pest and disease management strategy. This ... -
Effects of stem canker (Leptosphaeria maculans) and light leaf spot (Pyrenopeziza brassicae) on yield of winter oilseed rape (Brassica napus) in southern England
Zhou, Y.; Fitt, Bruce D.L.; Welham, S.J.; Evans, N.; Gladders, P. (2000-08)The relationships between yield loss and incidence or severity of stem canker and light leaf spot in winter oilseed rape were analysed by correlation and regression analyses, using data from experiments at Rothamsted, ... -
Epidemiology in relation to methods for forecasting light leaf spot (Pyrenopeziza brassicae) severity on winter oilseed rape (Brassica napus) in the UK
Gilles, T.; Evans, N.; Fitt, Bruce D.L.; Jeger, Michael J. (2000-09)Pyrenopeziza brassicae, cause of light leaf spot of oilseed rape, has a complex polycyclic life cycle. It can be difficult to control light leaf spot in winter oilseed rape in the UK since it is not easy to optimise fungicide ... -
Foreword
Fitt, Bruce D.L.; Evans, N.; Howlett, B. J.; Cooke, B.M. (Springer Nature, 2006) -
General practitioners with a special interest (GPwSI) in dermatology : results of an audit against Department of Health (DH) guidance
Schofield, J.; Irvine, A.; Jackson, S.; Padlard, T.; Gunn, S.; Evans, N. (2005)The NHS Plan 2000 proposed the development of specialist GPs to take referrals from other GPs in specialities including dermatology. The NHS Modernisation Agency Action on Dermatology (AoD) programmefunded pilot site studies ... -
Geographic variation in severity of phoma stem canker and Leptosphaeria maculans/L. biglobosa populations on UK winter oilseed rape (Brassica napus)
Stonard, J. F.; Latunde-Dada, A. O.; Huang, Yongju; West, Jon S.; Evans, N.; Fitt, Bruce D.L. (2010-01)Phoma stem canker, caused by Leptosphaeria maculans and L. biglobosa, is the most important disease of oilseed rape in Europe. Differences between L. maculans and L. biglobosa in their life-cycles enable the two species ... -
Modelling the daily progress of light leaf spot epidemics on winter oilseed rape (Brassica napus), in relation to Pyrenopeziza brassicae inoculum concentrations and weather factors
Papastamati, K.; Van Den Bosch, F.; Welham, S.J.; Fitt, Bruce D.L.; Evans, N.; Steed, J.M. (2002-02-15)The progress of light leaf spot (Pyrenopeziza brassicae) epidemics on winter oilseed rape was monitored in 1998/99 and 1999/2000 at Rothamsted, and weather factors and P. brassicae ascospore concentrations were recorded ... -
Modelling the effects of temperature and wetness duration on development of light leaf spot on oilseed rape leaves inoculated with Pyrenopeziza brassicae conidia
Gilles, T.; Fitt, Bruce D.L.; Welham, S.J.; Evans, N.; Steed, J.M.; Jeger, M.J. (2001-02)A model was developed to describe the effects of temperature and leaf wetness duration in controlled-environment experiments on the development of light leaf spot on oilseed rape (cv. Bristol) leaves inoculated with ... -
Nonconsultant career grade doctors in dermatology : a hidden resource
Schofield, J.; Jackson, S.; Irvine, A.; Padlard, T.; Gunn, S.; Evans, N. (2005)Since the publication of the NHS Plan in 2000, there has been much emphasis on the development of general practitioners with a special interest (GPwSI) in dermatology.The NHS Modernisation Agency Action on Dermatology (AoD) ... -
Predicting light leaf spot (Pyrenopeziza brassicae) risk on winter oilseed rape (Brassica napus) in England and Wales, using survey, weather and crop information
Welham, S.J.; Turner, J.A.; Gladders, P.; Fitt, Bruce D.L.; Evans, N.; Baierl, A. (2004-12)Data from surveys of winter oilseed rape crops in England and Wales in growing seasons with harvests in 1987-99 were used to construct statistical models to predict, in autumn (October), the incidence of light leaf spot ... -
Resistance to infection by stealth : Brassica napus (winter oilseed rape) and Pyrenopeziza brassicae (light leaf spot)
Boys, E.F.; Roques, S.E.; Evans, N.; Latunde-Dada, A.O.; West, Jon S.; Fitt, Bruce D.L.; Ashby, A.M.; Thomas, J.E. (2007-08)Light leaf spot (Pyrenopeziza brassicae) is an important disease on winter oilseed rape crops (Brassica napus) in northern Europe. In regions where economically damaging epidemics occur, resistance to P. brassicae in ... -
Spatial aspects of light leaf spot (Pyrenopeziza brassicae) epidemic development on winter oilseed rape (Brassica napus) in the United Kingdom
Evans, N.; Baierl, A.; Welham, S.J.; Fitt, Bruce D.L.; Brain, P. (2003-06)In microplot experiments in 1998-99 and 1999-2000, the start of light leaf spot epidemics could be predicted from weather data, using empirical equations for Pyrenopeziza brassicae apothecial (ascospore) development. ... -
Sporulation of Pyrenopeziza brassicae (light leaf spot) on oilseed rape (Brassica napus) leaves inoculated with ascospores or conidia at different temperatures and wetness durations
Karolewski, Z.; Evans, N.; Fitt, Bruce D.L.; Todd, A.D.; Baierl, A. (2002-10)In controlled environment experiments, sporulation of Pyrenopeziza brassicae was observed on leaves of oilseed rape inoculated with ascospores or conidia at temperatures from 8 to 20degreesC at all leaf wetness durations ... -
Visual and PCR assessment of light leaf spot (Pyrenopeziza brassicae) on winter oilseed rape (Brassica napus) cultivars
Karolewski, Z.; Fitt, Bruce D.L.; Latunde-Dada, A.O.; Foster, S.J.; Todd, A.D.; Downes, K.; Evans, N. (2006-06)Methods to assess light leaf spot (Pyrenopeziza brassicae) on winter oilseed rape cultivars were compared in laboratory, controlled-environment and field experiments. In controlled-environment experiments with seedling ...