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Efficacy of nonionic surfactants in the control of zoospore spread of Pythium aphanidermatum in a recirculating hydroponic system

STANGHELLINI, M. E ; RASMUSSEN, S. L ; KIM, D. H ; RORABAUGH, P. A

Plant disease, 1996, Vol.80 (4), p.422-428 [Periódico revisado por pares]

St. Paul, MN: American Phytopathological Society

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Título:
Efficacy of nonionic surfactants in the control of zoospore spread of Pythium aphanidermatum in a recirculating hydroponic system
Autor: STANGHELLINI, M. E ; RASMUSSEN, S. L ; KIM, D. H ; RORABAUGH, P. A
Assuntos: Biological and medical sciences ; Chemical control ; Control ; control de enfermedades ; controle de maladies ; cucumis sativus ; cultivo hidroponico ; culture hydroponique ; disease control ; enfermedades fungosas ; esporas ; Fundamental and applied biological sciences. Psychology ; fungal diseases ; Fungal plant pathogens ; hydroponics ; infestacion ; infestation ; maladie fongique ; nutrient solutions ; Phytopathology. Animal pests. Plant and forest protection ; plantulas ; plantule ; Pythium aphanidermatum ; racine ; raices ; roots ; seedlings ; soluciones nutritivas ; solution nutritive ; spore ; spores ; supervivencia ; surface active agents ; surfactant ; surfactantes ; survie ; survival ; variedades ; variete ; varieties
É parte de: Plant disease, 1996, Vol.80 (4), p.422-428
Notas: H
H20
ObjectType-Article-2
SourceType-Scholarly Journals-1
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Descrição: Zoosporic fungi are among the most destructive root pathogens in recirculating hydroponic cultural systems, and zoospores have been implicated as the primary, if not sole, infectious propagule responsible for the spread of these pathogens via the recirculating nutrient solution. In vivo experiments employing cucumbers as the susceptible host and Pythium aphanidermatum as the root pathogen demonstrated the efficacy of surfactants in the control of root disease caused by this fungus. Amending the recirculating nutrient solution with a nonionic surfactant (final concentration, 20 micrograms a.i./ml) resulted in complete control of the spread of the fungus via the recirculating nutrient solution. Zoospores were identified as the sole propagule responsible for pathogen dissemination in the recirculating nutrient solution. In the absence of a surfactant all plants within a recirculating hydroponic unit were killed within 5 to 6 weeks following hypocotyl inoculation of a single plant in the hydroponic unit.
Editor: St. Paul, MN: American Phytopathological Society
Idioma: Inglês

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Efficacy of nonionic surfactants in the control of zoospore spread of Pythium aphanidermatum in a recirculating hydroponic system

STANGHELLINI, M. E ; RASMUSSEN, S. L ; KIM, D. H ; RORABAUGH, P. A

St. Paul, MN: American Phytopathological Society

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