An article by University of California Agriculture and Natural Resources (UCANR) identifies important weeds that can host Impatiens Necrotic Spot Virus (INSV), particularly broadleaf weeds growing upwind of farming operations. Old and unmanaged weeds have the highest risk for INSV infection but there is still opportunity to manage and reduce the risk of INSV. USDA and UCANR have been monitoring INSV in weed populations as well as thrips populations in the Salinas Valley. INSV is a highly problematic virus for leafy green crops, and can infect hundreds of different species, including weeds adjacent to agriculture, where these weeds can serve as a harbor for the pests and the disease.

Read the publication here.