UCCE Master Gardeners of San Joaquin County
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UCCE Master Gardeners of San Joaquin County

Posts Tagged: herbicide resistance

Weed science podcasts

Growing the Valley podcast-Hanson

Have you listened to a Growing the Valley podcast? Here are a couple you might want to check out. Old and New Perennial Weeds with Dr. Brad Hanson In this short episode, Phoebe Gordon chats with Dr. Brad Hanson, Weed Specialist with UC Davis. They...

Posted on Thursday, March 21, 2019 at 1:40 PM
Tags: herbicide (61), herbicide resistance (86), orchard (7), weed (25), weed management (21)
Focus Area Tags: Agriculture Pest Management

The Current Status of Herbicide Resistance in California

Weeds in CA with HR to one SOA

Weeds compete with crops for light, water, and nutrients, which can result in yield reductions. Weeds can also interfere with crop production by serving as alternate hosts for pests and pathogens, providing habitat for rodents, and impeding harvest...

Posted on Thursday, January 3, 2019 at 2:25 PM
Focus Area Tags: Agriculture Pest Management

Herbicide Resistant Ryegrass in Winter Cereals


Last winter, many growers and PCAs contacted me because they were having trouble or were largely unable to control Italian ryegrass (Lolium perenne ssp. multiflorum) in their cereal fields.  This grass species (see Photo) is widely...

Posted on Thursday, September 27, 2018 at 8:06 PM
  • Author: Mariano Galla
Focus Area Tags: Agriculture Pest Management

Integrated Weed Management Survey (herbicide resistance research)

A forwarded request for California participation in research on herbicide resistance and integrated weed management.  Take care, Brad   As troublesome herbicide resistant weeds continue to develop and spread across the United States,...

Posted on Monday, August 27, 2018 at 11:53 AM

Collecting weed seeds and new watergrass weed species

Seed head of unknown watergrass species (Echinochloa spp.)

There are two (2) new posts on the UC Rice Blog written by Whitney Brim-DeForest, Cooperative Extension Rice Advisor. It's that time again: Collect Weed Seeds for Herbicide Resistance Testing!   New Watergrass Species: be on the...

Posted on Thursday, August 16, 2018 at 9:45 AM
Focus Area Tags: Agriculture Pest Management

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