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

From the Topics in Subtropics blog June 15, 2016 Researchers have now confirmed that six glyphosate-resistant weed species have been identified in California. Four have been known to exist for some time; they are horseweed (marestail, Conyza spp.

Treevix (saflufenacil) is now labeled for use in California on pomegranates thanks in part to the Western Region IR-4 Project and the UC Davis Weed Science Program.

Don't miss Clyde Elmore's photo exhibit Our Great Outdoors. If you attend Weed Day 2016 (July 7, 2016) you'll get a chance to see the exhibit. Our Great Outdoors July 8-Sept. 2, 2016 Buehler Alumni Center, UC Davis There will be a reception from 4-7 PM on July 8, 2016. Clyde Elmore clelmore37@gmail.

On January 12, 2016 the Federal EPA label for Kerb SC was reinstated for leaf lettuce. The registration on leaf lettuce was pulled in 2009 and Dow AgroSciences worked in the intervening years reregister Kerb. The new label allows for the use of Kerb from 25 to 55 day prior to harvest (Table 1).

The USDA ARS and California State Parks, Division of Boating and Waterways have initiated a study to address concerns that dissolved oxygen may be depleted by plant decomposition under herbicide-treated beds of water hyacinth.