Disease Control

Be on the lookout for fusarium fruit rot, other threats in the mid-Atlantic

There continue to be no reports of late blight on tomato or potato in the mid-Atlantic region. But, this week there was a confirmed report on tomato in eastern Tennessee determined to be caused by... more »

Some tips to control fungal leaf blights of carrot

Powdery mildew, alternaria and cercospora are three important fungal foliar pathogens that can cause early defoliation in carrots, thus reducing yields and making harvest difficult. Each pathogen produces distinct symptoms. Powdery mildew causes characteristic white, powdery lesions on... more »

Ampersand adjuvant approved for use with fungicides in California

Attune Agriculture, the leader in developing performance based agricultural products using hydrocolloid technology, announced Aug. 5 that Ampersand adjuvant is now approved for use with fungicides in California. Ampersand is now officially approved for use... more »

Esendo Fungicide is AgBiome’s next product set for EPA for review

AgBiome, a developer of products from the Earth's microbial communities, announced Aug. 10 the submission of Esendo Fungicide, its next product, to the EPA for review. Pending EPA registration, Esendo Fungicide will be the first... more »

Proper steps identified to control pumpkin disease

I was recently asked about disease control programs for pumpkins. The following was modified from an article by Kate Everts in 2019 that I have added updated fungicide recommendations and additional information about certain diseases.... more »

Pennsylvania vegetable disease update includes downy mildew sighting

Downy mildew was confirmed June 29 on cucumber in a commercial field in Lancaster County, Pennsylvania. The field was likely infected around the same time as the reports last week in New Jersey and Maryland... more »

Impatients Necrotic Spot Virus on desert lettuce topic of hybrid workshop

Impatients Necrotic Spot Virus was detected in spring 2021 on lettuce in the Western desert of the U.S. Although the disease did not have a significant impact in most fields, the impact of Impatients Necrotic... more »

Physiological leaf roll vs. growth regulator herbicide damage viewed

Leaf curling, cupping, and rolling in vegetables can be caused by virus diseases, aphid infestations, herbicides and growth regulators. We are currently finding physiological leaf roll and leaf curling due to exposure to growth regulator... more »

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