Journal of Phytopathology · 1989 · 30 citations · 6 references
AgricultureMicrobiologyPlant SciencesMycologyPlant Disease ManagementPlant-microbe InteractionsBacterial Plant PathogensPathogen IsolationPathogen Virulence FactorsPlant PathogenesisPlant-pathogen InteractionsPlant-pathogenic FungiFlow SystemsFungal Plant PathogenesisPathogenicity MechanismsPhytophthora PathogenicityPlant Pathogen DetectionPlant Pathogen EcologyPlant Pathogen IdentificationVegetable Pathogenic Microbiology
Abstract The occurrence of pythiaceous fungi in pot plant cultures grown in ebb and flow bench systems was investigated monthly from May to December, Phytophthora, Pythium and Saprolegnia (in all 351) were isolated from water samples and identified. Nearly all the isolates of Pythium produced zoospores in water. A pathogenicity test involving 15 isolates of Pythium “group P”, and 7 of Pythium “group F” showed that 73 % were pathogenic on cucumber, 66 % on Gerbera , 59 % on lettuce, 50 % on tomato, and 32 % on cress. Control of Pythium and Phytophthora is important in order to improve the health of plants grown in ebb and flow systems.
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