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 […]
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.
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 […]
Dr. Anthony Keinath, Vegetable Pathologist at Clemson University in South Carolina, has found powdery mildew in watermelons and issued an alert. Because the pathogen is airborne, we expect that inoculum may also be present in North Carolina. Read the post on the NC State Extension Cucurbits site.
May 30: First report from NC. CDM has been confirmed on cucumber in a 10 acre field in Sampson County, NC. Incidence is 10%, severity is 5%. Estimated date of first symptoms is May 29 May 25: First report from GA. CDM has been confirmed on cucumber in a 20 acre field in Brooks County, GA. Incidence is 5%, severity is 10%. Estimated […]
Cucurbit downy mildew (CDM) was confirmed on a cucumber sample from a production field in Sampson county on May 30 of 2018. Read more at the NC State Cooperative Extension Cucurbit Portal.
Delaware has had widespread flooding in vegetable crops in May due to heavy and extended rains. Soils in some field areas have remained waterlogged for several days. In 2018, initial plantings of watermelons and other fresh market vegetables have been made; peas are nearing harvest, and significant acres of pickles, snap beans, and sweet corn […]