Mildew

Cucurbit Downy Mildew Alert – Cucumber

Plant and Pest Advisory – Andy Wyenandt – 6/19/24

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Cucurbit downy mildew has been confirmed on cucumber in SalemCounty in southern New Jersey. This is the first report of CDM in the stateand region this growing season. All cucumber and cantaloupe growersshould scout on a daily basis and initiate a preventative fungicide programimmediately. All other cucurbit plantings need to be scouted on a regularbasis. […]

Controlling Basil Downy Mildew in the Field in 2023

Andy Wyenandt, Rutgers Cooperative Extension

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For over a decade, basil downy mildew (BDM) has caused significant losses in basil grown in organic andconventional field and greenhouse production across the United States. At the time of its introduction,there were very few fungicides labeled for its control making it nearly impossible to grow a successfulcrop in many areas of the country. The […]

Cucurbit Powdery Mildew Control in 2023

Andy Wyenandt, Rutgers Cooperative Extension

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Cucurbit powdery mildew (CPM), caused by Podosphaera xanthii, is one the most important diseasesof cucurbit crops throughout the world. The pathogen is an obligate parasite, just like cucurbit downymildew, meaning it needs a living host in order to survive. In northern regions that have a killing frost inthe fall the pathogen will die out when […]