Powdery Mildew on cucumber and squash in Western North Carolina Powdery Mildew is caused by the fungal pathogens Podosphaera xanthii and Erysiphe cichoracearum. Disease can occur on all cucurbit crops. However, due to the incorporation of resistance genes, most commercial cucumber and melon cultivars are less susceptible. High-humidity (50-90%), moderate temperatures (68 to 80 ℉), dense foliage, and […]
Pumpkin management in the final stretch The evidence of proper management shows up now. Some issues can still be addressed, but others required attention months ago. Poor control of Powdery Mildew will result in defoliation, sunburned fruit and weak, brown handles. There is limited effectiveness with rescue sprays for powdery. Fruit rots are triggered in some fields […]
The 2018 Florida watermelon season posed challenges for most growers that resulted in lower yeilds and higher fruit prices. High prices were necessary for farmers to be profitable this year due to the challenges that they had early in the season with freeze events, the need to replant, and some unusually rainy periods during the […]
CucCAP researchers at the U.S. Vegetable Laboratory in Charleston, SC collaborated with the Boyce Thompson Institute in Ithaca, NY to generate the highest density genetic map to date for melon.
Plant Disease Management Reports published by The American Phytopathological Society are hosted on the Plant Management Network. CucCAP Plant Pathologists contribute to these reports annually. Evaluation of fungicides for control of powdery mildew of winter squash, Kinston 2017. Evaluation of fungicides for control of downy mildew of winter squash, Kinston 2017. Evaluation of cultivars for […]
Efficacy of fungicides for managing powdery mildew on pumpkin, 2017 Evaluation of pumpkin cultivars resistant to powdery mildew, 2017 Evaluation of cucumber cultivars resistant to downy mildew, 2017 Efficacy of Biofence for managing Phytophthora blight in cucurbits, 2017 Efficacy of biopesticides for managing Phytophthora blight in cucurbits, 2017 Evaluation of management programs without chlorothalonil for […]
Vegetable crops and their response to nitrogen Most cucurbit crops do not convert nitrogen to fruit very well. Their response to excess levels of nitrogen is to grow more plant, which potentially leads to increased disease problems and later production. Increased diseases can occur because the increased leaf canopy inhibits air movement leading to increased […]
Both summer and winter squash can be plagued by many pests and diseases, and plants often die early. For summer squash (Cucurbita pepo), problems include squash vine borers, squash bugs, downy mildew and cucurbit yellow vine disease (CYVD). CYVD is a bacterial disease transmitted by squash bugs that can quickly kill plants as they start […]