UC Weed Science

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Brad Hanson (Cooperative Extension Weed Specialist) during the Diagnosing Herbicide Symptoms 2018 course
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ANNOUNCEMENT :: UC Weed Science 2020 events

February 11th, 2020
Mark your calendar... Diagnosing Herbicide Symptoms 2020 course July 14-15, 2020 UC Davis Weed Day 2020 July 16, 2020 UC Davis Aquatic Weed School 2020 Sept. 2-3, 2020 UC Davis More information on these events to come.
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oxalis ir4 report
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Oxalis control in container nurseries

February 8th, 2020
By Bradley Hanson
The IR4 program conducts a significant amount of research to facilitate registration of pesticides (both conventional and biopesticides) on specialty crops. The program also supports similar work on a range of non-food crops through the Environmental Horticulture program.
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USDA APHIS header
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New risk assessments just posted for invasive weeds

February 6th, 2020
New Risk Assessments Just Posted for Invasive Weeds The U.S. Department of Agriculture's Animal and Plant Health Inspection Service ?recently posted Weed Risk Assessments for a dozen new weeds of concern. Eleven of the 12 are already documented in the West.
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