The recent overcast, humid, and wet conditions ensure that the sporangia will survive being transported via air currents from a diseased field to healthy cucumbers.
Researchers at Michigan State University used a fluorescent isolate of the broad host range pathogen, Phytophthora capsici, to develop a high-throughput, microtiter plate assay for replicated quantification of pathogen growth on plant tissue in real time. This method, which can detect pathogen growth prior to development of symptoms, can assist with screening for disease resistance, mapping of resistance loci, testing efficacy of control measures, or elucidation of fundamental host-pathogen interactions.
Researchers at Cornell University developed squash breeding lines with increased resistance to Phytophthora crown and root rot.
One of the most serious diseases in vegetable production in Georgia is Phytophthora blight, caused by the oomycete pathogen Phytophthora capsici. It is a water mold that attacks the roots, foliage, and fruit, causing root rot, crown rot, leaf lesions, fruit rot, and plant wilt. The disease affects peppers, squash, watermelon, cucumber, cantaloupe, and other vegetable crops.
Changes in Winter Squash Fruit Exocarp Structure Associated with Age-Related Resistance to Phytophthora capsici
by Safa A. Alzohairy, Ray Hammerschmidt, and Mary K. Hausbeck
Extension vegetable pathologist Mary Hausbeck was joined by CucCAP plant pathologists Lina Quesada from NC State and Chris Smart from Cornell University for a series of disease management workshops in Michigan. These winter workshops for vegetable growers provided an in-depth overview of the biology and control of cucurbit downy mildew and Phytophthora capsici in pickling cucumbers […]
West central Michigan vegetable update – Aug. 3, 2018 In cucurbits, cucurbit downy mildew was detected at additional sites in southwest Michigan as well as in Saginaw and Arenac counties over the last week; it is on the move and cucumbers and melons need to be protected. Phytophthora capsici was causing fruit rot and leaf lesions in […]
Dr. Mary Hausbeck, a member of the CucCAP Pathology team, will present: Fungicides & Diseases: Managing Diseases for Higher Profitability and a Safer Environment Explore management strategies that tackle a persistent, soil-borne mold called Phytophthora capsici that kills plants and rots fruit. Producers will have the opportunity to observe field studies in squash and peppers to […]