Richard Smith is the University of California Cooperative Extension Monterey County Vegetable Crop Production and Weed Science Farm Advisor. He also covers Santa Cruz and San Benito counties.
Weeds are an important host of Impatiens Necrotic Spot Virus (INSV) in the Salinas Valley. It is a tospovirus that is spread primarily by western flower thrips (Frankliniella occidentalis). It has a wide host range of over 600 species of plants, including vegetables such as lettuce, tomatoes and peppers and many ornamentals. In the Salinas Valley, many weed species serve as a.../span>
Richard Smith is the UC Cooperative Extension Vegetable Crop Production and Weed Science Advisor for Monterey, Santa Cruz and San Benito counties and Daniel Hasegawa is a USDA ARS Research Entomologist for the Crop Improvement and Protection Research Unit in Salinas, California.
Impatiens necrotic spot virus (INSV) caused significant crop loss in 2020. The disease was most severe north of Gonzales, but later in the production season it...