Differential Sensitivity to Mancozeb of Metalaxyl-Sensitive and Metalaxyl-Resistant Isolates ofPseudoperonospora cubensis
- 1 January 1984
- journal article
- research article
- Published by Scientific Societies in Phytopathology®
- Vol. 74 (12) , 1437-1439
- https://doi.org/10.1094/phyto-74-1437
Abstract
Eight field isolates of P. cubensis, the fungal causal agent of downy mildew in cucurbits, were tested for sensitivity to metalaxyl and mancozeb. While mancozeb efficiently controlled downy mildew in cucumbers inoculated with 3 metalaxyl-sensitive isolates, it failed to do so in cucumbers inoculated with 5 other metalaxyl-resistant isolates. The practical and theoretical implications of this finding are discussed.This publication has 3 references indexed in Scilit:
- Synergy Between Metalaxyl and Mancozeb in Controlling Downy Mildew in CucumbersPhytopathology®, 1984
- Cross-Resistance to Four Systemic Fungicides in Metalaxyl-Resistant Strains ofPhytophthora infestansandPseudoperonospora cubensisPlant Disease, 1984
- Selection for Tolerance in Organisms Exposed to Sprays of Biocide Mixtures: A Theoretical ModelPhytopathology®, 1980