Invasive species

Release of Weevil for Biological Control of Yellow Starthistle

September 25, 2019
The USDA will allow the release of a weevil (Ceratapion basicorne) in the United States to help control yellow starthistle, an invasive weed found in 40 of the lower 48 states. The weevils will initially be released in California. Brad Hanson, weed specialist in Plant Sciences, addresses management of yellow starthistle.

Broomrape Eradication is High Priority for UC Researchers

August 14, 2019
Control of branched broomrape, a parasitic weed that can badly infest tomato and other crop fields, was addressed by UC Davis, UC ANR researchers — Brad Hanson, Mohsen Mesgaran, and Matt Fatino — at the annual Weed Day field day at UC Davis.