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

A quick post today with information about MSMA herbicides. There has been concern and lack of certainty about the registration status of MSMA and other organic arsenical herbicides. I was forwarded the attached press release and current labels for MSMA 6.6 and MSMA 6 Plus.

Glyphosate resistant ryegrass has been a persistent problem since appearing in almond orchards in the Sacramento Valley in the late 1990s. It is a winter annual weed, but under irrigation it can germinate any time of the year.

Weed control in onions can be challenging. Onions have various challenges that make weed control difficult. They grow slowly early in the crop cycle and never achieve a good competitive crop canopy to suppress weeds.

Palmer amaranth is a highly competitive weed of field corn, peanut, soybean and, especially, cotton.

EVENT ANNOUNCEMENT University of California Allium Workgroup & California Garlic and Onion Research Advisory Board bring you the latest research results for Growers and Allied Industry California Garlic and Onion Symposium 2013 Monday, February 11, 2013 UC Cooperative Extension, Tulare County Agricu...