Zucchini and yellow squash are being picked. Pumpkins and winter squash are vining out. In both crops, thrips are becoming an issue with the hot dry weather. According to Elaine Roddy in Ontario, damage to older leaves may not be a concern, but stunting of new growth indicates the need to treat. Thrips can scar […]
Excerpts from NC State Plant Pathology’s June 22, 2018 biweekly vegetable production conference calls entitled Veggie Calls: Powdery Mildew has been reported on zucchini in three counties from Western and Central North Carolina. Cucumbers in Western North Carolina are exhibiting symptoms of chemical burn. The plants were sprayed with Quadris and Manzate on a hot and […]
Cucurbit Downy Mildew was reported throughout the southeast and in the mid-Atlantic states in June 2018. The majority of DM reports were on cucumbers with 12 instances in all counties reporting. Three instances of DM on squash were reported, 2 in melon fields, 4 in squash fields and 1 instance in a watermelon field. June […]
The soil borne bacteria, Phytophthora capsici, spreads rapidly via water and can infect cucumbers, zucchini, summer and winter squash, watermelons, cantaloupes, pumpkins, peppers, eggplants, tomatoes and succulent beans. Read more about the destructive bacteria Phytophthora capsici.
Leaves infected with cucurbit anthracnose, caused by Colletotrichum orbiculare, were submitted to the NCSU Vegetable Pathology Lab and confirmed as positive. Anthracnose can be confused with other foliar cucurbit diseases, such as cucurbit downy mildew, but chemical control is drastically different for different cucurbit diseases. Read more for information on identification and control of cucurbit anthracnose.
Southeast Michigan vegetable update – June 13, 2018: Across the state, heat stress is being seen in transplants put in the ground during the unseasonably hot Memorial Day weekend. …..All of these symptoms can easily be mistaken for a disease or nutritional issue, though if it is heat stress plants should recover and grow normally […]
Excerpts from NC State Plant pathology’s June 8, 2018 biweekly vegetable production conference calls entitled Veggie Calls: A producer in northeastern North Carolina had reported several cucurbit diseases including Phythium root rot and powdery mildew on squash, and leaf spot and gummy stem blight in cantaloupe. Cucurbit Downy Mildew has been reported in Duplin, Sampson, and […]
As the flooding recedes in western North Carolina, many growers are now reporting losses due to Phytophthora diseases on various vegetable crops including pepper, tomato, cucumber, and other cucurbits. Many vegetable fields were reported as flooded, and several were under water for some period of time. These conditions (flooding, standing water, and high amounts of […]