UC Weed Science (weed control, management, ecology, and minutia)

Wildfire is an important ecological process that shapes patterns of plant diversity in many Mediterranean ecosystems, including California.

A new herbicide for early-season weed control in water-seeded rice will be available soon. The herbicide active ingredient (a.i.) is pyraclonil, which will be trademarked as Zembu (1.8% a.i.) by Nichino, America Inc. The mode of action is a protox porphyrinogen (PPO)-inhibitor or Group 14.

A recent article in the LA Times argued that California native plants should not be the only option for drought-tolerant landscaping.

From Butte County Agricultural Commissioner's office: A weed sample collected in Butte County on September 19, 2023, was submitted to the California Department of Food and Agriculture (CDFA) botany lab for identification. The sample was identified as White Water Fire (Bergia capensis).

To manage johnsongrass, a noxious weed that crowds out cotton and sickens horses, farmers have tried herbicides, burning and hand-pulling.