Premature senescence of infected leaves can result in reduced market quality because fruit become sunburnt or ripen prematurely or incompletely. Quantity of yield is reduced due to a decrease in the size or number of fruit or a decrease in the length of the harvest period. This disease can be a major production problem. Although all cucurbits are susceptible, symptoms are less common on cucumber and melon because many commercial cultivars have resistance. Powdery mildew is a common disease of cucurbits under field and greenhouse conditions in most areas of the world. Summary points about managing powdery mildew successfully.Cultural and biological controls including resistant varieties.Managing cucurbit powdery mildew – Overview.Table: Mobile Fungicides for Managing Three Major Cucurbit Diseases: Powdery Mildew, Downy Mildew, and Phytophthora Blight.Targeted Fungicides for Cucurbit Powdery Mildew.Results from research on fungicide resistance in the cucurbit powdery mildew pathogen.At prompts enter 832191 for access code and 14 for reference number. Listen to Meg McGrath talk about managing powdery mildew in a teleconference hosted by Steve Bogash of Marrone Bio Innovations on 22 July 2020.This and other recordings are in the green-bordered box at the bottom of this page. Podcast: Avoiding the Powdery Mildew Blues – Meg McGrath, plant pathologist at Cornell’s Long Island Horticultural Research and Extension Center, discusses how with other members of the Great Lakes Vegetable Working Group on 24 June 2020.Guidelines on managing cucurbit powdery mildew in 2022.Research on powdery mildew conducted at LIHREC.
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