As cucurbits continue to be harvested, both downy and powdery mildew are widespread.
Author: cuccap
CucCAP scientists find high prevalence of gummy stem blight resistance to common fungicides
The gummy stem blight fungus, Stagonosporopsis citrulli, is now resistant to fungicides in four chemical classes. The newest resistance is to fungicides in FRAC Code 3.
Whitefly Management in Melons
The sweetpotato whitefly, Bemisia tabaci, can cause significant melon crop losses and result in excessive insecticide use. Adults and nymphs feed on the undersides of melon leaves by inserting their piercing/sucking mouthparts into vascular tissue and extracting plant juices that will reduce fruit quantity and size. Image and article by: John C. Palumbo, Associate Research Scientist of vegetable crops at the University of Arizona’s Yuma Agricultural Extension Center.
Cucurbit Downy Mildew updates August 29, 2023 | ipmPIPE
Cucurbit Downy Mildew was detected in Indiana, Maryland, Pennsylvania, New Hampshire, North Carolina, Delaware, Virginia, and New Jersey in August 2023.
Whitefly populations are on the rise
University of Georgia (UGA) Cooperative Extension vegetable entomologists describe squash plants that haven’t sprayed yet with 100 whiteflys per leaf.
Cucumber field trials 2023
The Vegetable Pathology Lab at NC State conducts field trials each growing season to study plant pathogens, resistance of plant varieties to pathogens, and vegetable disease management strategies. When a field trial is harvested, the crop is weighed, graded, and evaluated for disease damage and marketability.
Scout diligently for thrips
Thrips (T.) parvispinus was recently observed in Florida on cucumber, squash and zucchini for the first time last spring. First symptoms look like broad mite damage, so growers need to scout for thrips.
Michigan Cucurbit update | August 18, 2023
Cucurbit downy mildew has been reported in multiple locations in Michigan. Michigan cucurbit growers are warned to detect and disk under plants infected with Phytophthora.
