As of February 20, fiddleneck (Amsinckia spp.) was flowering in Fresno County. Zero rain fell in the city of Fresno during the month of February. By February 27, a date when the temperature reached 79F in Fresno, the U.S.
Several years ago, the UC Weed Science group produced a series of training videos. In the next few days, I'm going to share links to the videos. The first topic is principles of weed control. The videos are broken up into smaller parts, so they are easier to view.
From the UC Rice Blog (March 23, 2020) Weeds are important pests of California rice systems, and weed management can account for roughly 17 percent of total operating costs, according to a UC cost of production study.
The introduction of a new crop into a landscape brings certain unknowns, including the risk of drift from neighboring crops. Hemp is a new, high-value commodity that is now being produced in many parts of California.