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Vertical dispersal of plant pathogens by splashing. Part II : experimental study of the relationship between raindrop size and the maximum splash height
(1989-03)
This paper describes a simple experimental test of the theoretical relationship between raindrop diameter and maximum splash height proposed by Walklate (1989). This relationship contains two empirical parameters to model ...
The role of rain in dispersal of pathogen inoculum
(1989)
The importance of rain in the dispersal of micro-organisms was first demon strated in the 1880s, in the classic studies of Pierre Miquel (Figure 1) on the microflora of the Pare Montsouris in Paris. Collected rainwater ...
Pathogenicity to wheat and rye of Pseudocercosporella herpotrichoides isolates from France and the UK
(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 ...
Eyespot disease of cereal
(HGCA, 1988-08)
Eyespot (Pseudocercosporella herpotrichoides ), a serious disease of winter wheat and barley, has increased in importance in the 1980s because I) pathogen populations have become resistant to the fungicides which were used ...
Dispersal of Rhynchosporium secalis conidia from infected barley leaves or straw by simulated rain
(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 ...
Stages in the progress of eyespot epidemics in winter wheat crops
(1988-02)
The temporal progress of eyespot (Pseudocercosporella herpotrichoides) epidemics in winter wheat crops is considered in four stages: leaf sheath lesion establishment, leaf sheath penetration, stem lesion establishment and ...
Spore dispersal and plant disease gradients : a comparison between two empirical models
(1987-03)
Power law and exponential models were fitted to 325 sets of observations which described decreases with distance in deposition of air-borne or splash-borne spores, or pollen, or in amounts of plant disease caused by fungi, ...
Pathogenicity to wheat seedlings of wheat-type and rye-type isolates of Pseudocercosporella herpotrichoides
(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 ...
Spore dispersal gradients and disease development
(Blackwell Scientific, 1987)