- Author: Rebecca Ozeran
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 79°F in Fresno, the U.S. Drought Monitor had declared most of California's Central Valley to be in Moderate Drought conditions (D1). This status persists despite cooler temperatures and rain in the middle of March (Fig. 1).
Figure 1. March 31, 2020 Drought Monitor showing moderate drought (D1) in the southern San Joaquin Valley, and the western portion of the entire Central Valley through the north coast. In California,...
- Author: Gale Perez
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.
Principles of Weed Control
- Video :: Part 1 :: Introduction, preventing weeds through sanitation (5:43)
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./span>
- Author: Gale Perez
I just got an e-mail from UC ANR (Agriculture & Natural Resources) about the two revised (weed science) publications. They're free!
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. The attached document includes photos and descriptions of herbicide damage symptoms on hemp. Plants were sprayed with herbicides that are widely used during the hemp growing season. Materials were selected that are likely to be sprayed on commodities planted near, or adjacent to, a hemp field. The intention is to provide a brief description of herbicide injury expected from specific herbicides or similar modes of action. The final page of the document is a table with the common registered uses of the materials included in...