Field Efficacy of Six Kinds of Fungicides for Control and Prevention of Apple Powdery Mildew (Podosphaera leucotricha)
Objective] This study aimed to screen effective fungicide for prevention and control of apple powdery mildew. [Method] Field efficacy of six kinds of fungi-cides with 18 concentrations against apple powdery mildew was investigated. [Re-sult] 4 000-fold triflumizole WP exhibited the highest control efficacy of 82.96%, fol-lowed by 3 000-fold triflumizole WP with control efficacy of 77.75%, while 800-fold and 1 000-fold 70% thiophanate methyl WP exhibited relatively low control efficacy, which was both lower than 60%. [Conclusion] In actual production, 4 000-fold triflu-mizole WP and 3 000-fold triflumizole WP should be used alternately to control and prevent apple powdery mildew.
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维普
