Browsing Research publications by Author "Jeger, M.J."
Now showing items 1-10 of 10
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Arable crop disease control, climate change and food security
Fitt, Bruce D.L.; Evans, Neal; Gladders, P.; Hughes, David; Jeger, M.J.; Turner, J.A.; West, Jon S. (Association of Applied Biologists, 2011)Global food security is threatened by crop diseases that account for average yield losses of 16%. Climate change is exacerbating threats to food security in much of the world, emphasising the need to increase food production ... -
Climate change and arable crop disease control : mitigation and adaptation
Fitt, Bruce D.L.; Evans, Neal; Gladders, Peter; Hughes, D. J.; Madgwick, J.W.; Jeger, M.J.; Townsend, J.A.; Turner, J.A.; West, Jon S. (2011) -
Conditions for infection of winter oilseed rape leaves by conidia and ascospores of Pyrenopeziza brassicae, causing light leaf spot
Gilles, T.; Fitt, Bruce D.L.; Jeger, M.J. (1999)The optimum temperature for infection of oilseed rape leaves by P. brassicae conidia was c.16°C; an increase of temperature above the optimum and a decrease of temperature below the optimum decreased infection by conidia. ... -
Effect of wind on the dispersal of oospores of Peronosclerospora sorghi from sorghum
Bock, C. H.; Jeger, M.J.; Fitt, Bruce D.L.; Sherington, J. (1997-06)The effect of wind on the dispersal of oospores of Peronosclerospora sorghi, cause of sorghum downy mildew (SDM) is described. The oospores are produced within the leaves of aging, systemically infected sorghum plants. ... -
Effects of environmental factors on development of Pyrenopeziza brassicae (light leaf spot) apothecia on oilseed rape debris
Gilles, T.; Fitt, Bruce D.L.; Jeger, M.J. (2001-04)The development of Pyrenopeziza brassicae (light leaf spot) apothecia was studied on petiole debris from artificially infected oilseed rape leaves incubated at temperatures from 6 to 22 degreesC under different wetness ... -
Effects of temperature and wetness duration on conidial infection, latent period and asexual sporulation of Pyrenopeziza brassicae on leaves of oilseed rape
Gilles, T.; Fitt, Bruce D.L.; Kennedy, R.; Welham, S.J.; Jeger, M.J. (2000-08)Experiments in controlled environments were carried out to determine the effects of temperature and leaf wetness duration on infection of oilseed rape leaves by conidia of the light leaf spot pathogen, Pyrenopeziza brassicae. ... -
Effects of temperature and wetness duration on infection of winter oilseed rape leaves by Pyrenopeziza brassicae
Gilles, T.; Fitt, Bruce D.L.; Jeger, M.J. (1998)Light leaf spot, caused by Pyrenopeziza brassicae Sutton and Rawlinson (anamorph Cylindrosporium concentricum) is responsible for considerable yield losses in winter oilseed rape crops in the UK. A provisional version of ... -
Implementation of results from rain tower experiments into a simulation model for vertical spore distribution
Pielaat, A.; van den Bosch, Frank; Marshall, D.C.A; Fitt, Bruce D.L.; McCartney, H. A.; Jeger, M.J. (Association of Applied Biologists, 1999) -
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 ... -
Simulation of vertical spread of plant diseases in a crop canopy by stem extension and splash dispersal
Pielaat, A.; Van Den Bosch, F.; Fitt, Bruce D.L.; Jeger, M.J. (2002-06-01)Upward displacement of light leaf spot lesions by winter oilseed rape stem extension and dispersal of Pyrenopeziza brassicae conidia by rain-splash were both incorporated into a model to describe vertical spread of light ...