Gray mold outbreaks on hemp caused the fungus Botrytis cinerea can spread easily and quickly kill plants. Here's how hemp growers can create conditions that will keep gray mold at bay.
Cynthia M. Ocamb |
Sep 2022 |
Article
Photos A & B by C.M. Ocamb, and photo C by T.A. Bates, OSU. (Cropped from original)
Powdery mildew has surfaced as a challenge for Northwest hemp growers. Powdery mildew coats the leaves of hemp plants and leads to a decline in quality. Here's what hemp growers can do if powdery mildew turns up.
Cynthia M. Ocamb |
Aug 2022 |
Article
Photo A by G. Shrestha; photos B and C by C.M. Ocamb, Oregon State University. (Cropped from original)
Hemp is susceptible to fungal pathogens that induce wilt disease that can kill plants. The fungi that cause the disease can survive for years and are easily spread. But there are steps growers can take to prevent it.
Hemp growers need to monitor their fields regularly for adult beet leafhoppers, which can transmit the beet curly top virus. Although data for hemp is scarce, management techniques used to protect other crops are advised.
Hemp plants are susceptible to disease, especially at the early stages of development. Hemp growers can promote healthy plants by using high-quality seed and avoiding soil that is wet, dense or poorly drained.