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Browsing by Author "Creighton, N.F."
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Changes in populations of Pseudocercosporella herpotrichoides in successive crops of winter wheat in relation to initial populations and fungicide treatments
Bateman, Geoffrey L.; Fitt, Bruce D.L.; Creighton, N.F.; Hollomon, D.W. (1990-04)The effects of two applications annually of carbendazim, prochloraz or a mixture of carbendazim and prochloraz on five populations of the eyespot fungus, Pseudocercosporella herpotrichoides, were studied in successive crops ... -
Dispersal of Rhynchosporium secalis conidia from infected barley leaves or straw by simulated rain
Fitt, Bruce D.L.; McCartney, H.A.; Creighton, N.F.; Walklate, M.E.L. (1988-02-29)Simulated rain (mean drop diameter c. 1 or 3 mm) was allowed to fall for 10 – 15 min on to barley leaves or straw infected by Rhynchosporium secalis (leaf blotch). The leaves were supported on a mesh through which run-off ... -
Effects of irrigation and benomyl treatment on chocolate spot (Botrytis fabae) and yield of winter-sown field beans (Vicia faba)
Fitt, Bruce D.L.; Finney, M.E.; Creighton, N.F. (1986-03)In 1976-7, 1977-8 and 1978-9 plots of winter-sown field beans, either irrigated in June and July or unirrigated, were treated with one or more sprays of benomyl or were untreated. The amounts of chocolate spot on field ... -
Effects of leaf age, inoculum dose and freezing on development of chocolate spot (Botrytis fabae) lesions on field bean (Vicia faba) leaves
Creighton, N.F.; Bainbridge, A.; Fitt, Bruce D.L. (1986-02)Botrytis fabae spore suspensions containing c. 1, 10, 102, 103, 104, 105, or 106 spores/ml were used to inoculate 5, 17 or 30-day-old field bean leaves. The percentages of the leaf areas covered by, chocolate spot lesions ... -
Effects of rainfall intensity and duration on dispersal of Rhynchosporium secalis conidia from infected barley leaves
Creighton, N.F.; Fitt, Bruce D.L.; Lacey, M.E.; McCartney, H. A. (1986-06-30)Simulated rain of two intensities was allowed to fall for 30 min on to barley leaves infected by Rhynchosporium secalis. The resulting splash droplets were collected on horizontal pieces of fixed photographic film. Most ... -
Epidemiology and control of chocolate spot (Botrytis fabae) on winter field beans (Vicia faba)
Creighton, N.F.; Bainbridge, A.; Fitt, Bruce D.L. (1985-06)Dispersal of Botrytis fabae spores and the development of chocolate spot lesions were monitored in crops of winter-sown field beans during the 1980/81, 1981/82 and 1982/83 seasons. The greatest numbers of B. fabae spores ... -
Pathogenicity to wheat and rye of Pseudocercosporella herpotrichoides isolates from France and the UK
Creighton, N.F.; Cavelier, N.; Fitt, Bruce D.L. (1989-01)Isolates of Pseudocercosporella herpotrichoides from France and the U.K. were tested for pathogenicity to wheat and rye seedlings in parallel controlled-environment experiments in both countries. There was no difference ... -
Pathogenicity to wheat seedlings of wheat-type and rye-type isolates of Pseudocercosporella herpotrichoides
Fitt, Bruce D.L.; Creighton, N.F.; Bateman, Geoffrey L. (1987-03)Four groups of isolates of Pseudocerosporella herpotrichoides (wheat-type carbendazimsensitive, wheat-type carbendazim-resistant, rye-type carbendazim-sensitive and rye-type carbendazim-resistant) were tested for pathogenicity ... -
A rain tower and wind tunnel for studying the dispersal of plant pathogens by rain and wind
Fitt, Bruce D.L.; Walklate, P.J.; McCartney, H. A.; Bainbridge, A.; Creighton, N.F.; Hirst, J.M.; Lacey, M.E.; Legg, B.J. (1986-12)The rain tower/wind tunnel complex at Rothamsted consists of a rain tower (height 11 m, cross-section 1 m2) linked to the upwind end of a wind tunnel (length 12 m, cross-section 1 m2), which may be operated in either an ... -
Role of wind and rain in dispersal of Botrytis fabae conidia
Fitt, Bruce D.L.; Creighton, N.F.; Bainbridge, A. (1985)Numbers of Botrytis fabae conidia dispersed in plots of winter-sown field beans in which chocolate spot developed were monitored with vertical cylinder and horizontal slide samplers exposed within crops for 3- or 4-day ... -
Use of fungicides to control chocolate spot (Botrytis fabae) on winter field beans (Vicia faba)
Bainbridge, A.; Fitt, Bruce D.L.; Creighton, N.F.; Cayley, G.R. (2007-04-05)Less chocolate spot (% leaf area affected) developed on winter–sown field beans sprayed with benomyl than on untreated beans or beans sprayed with iprodione, prochloraz or thiabendazole. A single benomyl spray during ...