Cultivar and spacing effects on transmission of Phytophthora parasitica in an ebb-and-flow subirrigation system

Phytophthora parasitica was transmitted within 6 weeks from vinca (Catharanthus roseus) plants growing in infested potting mix, on the drain end of ebb-and-flow benches, to plants in noninfected potting mix. Transmission of Phytophthora was very low when potting mix was not pasteurized. When potting...

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Bibliographic Details
Published inPlant disease Vol. 81; no. 1; p. 89
Main Authors Strong, S.S. (Auburn University, Auburn.), Behe, B.K, Deneke, C.F, Bowen, K.L, Keever, G.J
Format Journal Article
LanguageEnglish
Published United States 01.01.1997
Subjects
CATHARANTHUS ROSEUS
CULTIVO EN CONTENEDOR
CULTURE EN CONTENEUR
ENFERMEDADES FUNGOSAS
EPIDEMIOLOGIA
EPIDEMIOLOGIE
ESPACEMENT
ESPACIAMIENTO
ETIOLOGIA
ETIOLOGIE
MALADIE FONGIQUE
PHYTOPHTHORA NICOTIANAE PARASITICA
RESEAU D'IRRIGATION
SISTEMAS DE RIEGO
TRANSMISION DE ENFERMEDADES
TRANSMISSION DES MALADIES
VARIEDADES
VARIETE
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Summary:Phytophthora parasitica was transmitted within 6 weeks from vinca (Catharanthus roseus) plants growing in infested potting mix, on the drain end of ebb-and-flow benches, to plants in noninfected potting mix. Transmission of Phytophthora was very low when potting mix was not pasteurized. When potting mix was steam pasteurized, infection of plants, disease incidence, and severity increased with time and decreased with distance from plants in infested pots. The cultivar Pretty in Pink was more susceptible to infection by P. parasitica than cv. Peppermint Cooler, allowing more rapid and severe disease development as well as pathogen dissemination and transmission. Pot spacing did not significantly affect transmission of P. parasitica on an ebb-and-flow bench
Bibliography:9708810
F06
F01
H20
ISSN:0191-2917
1943-7692
DOI:10.1094/PDIS.1997.81.1.89