UC Weed Science

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Four men in weedy area. One is holding a measuring container while another sprays liquid into it from a wand attached to a backpack sprayer. A third person holds a clipboard and the furth holds a stopwatch.
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New Online Course: Calibrating Herbicide Applications for Non-Agricultural Areas

April 14th, 2025
By Cheryl A Reynolds
Calibration might sound intimidating, but it’s critical for safe and effective herbicide application. Proper calibration ensures that the correct amount of pesticide is applied to an area while achieving the desired level of pest control. To support land managers and pesticide applicators, the UC Statewide…
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Late Rains, Small Plants, Fast Phenology

April 4th, 2025
By Chris J McDonald
Originally Posted April 1, 2025. This year in Southern California the rainy season got off to a late start. Southern California has received about one half of the average precipitation total as of this writing (and that's not an April fool's joke). Last year we had over 50% more rainfall than the…
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webinar video on electric weed control in organic perennial crops

April 2nd, 2025
By Bradley Hanson
A quick repost to share a link to a recent January 14, 2025 webinar on Electric Weed Control in Organic Perennial Crops. The webinar was part of a multi-state research and extension project that includes researchers from Oregon State University, Cornell University, and UC Davis and outreach support from…
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WeedCut: BMPs for herbicide application techniques

April 2nd, 2025
By Bradley Hanson
Sharing a recent post from the California Invasive Plant Council (Cal-IPC) about a new page on the WeedCUT online decision support tool. -Brad--------------------------------------------------------------------New WeedCUT Feature: BMPs for Herbicide Application Techniques   Confused about…
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