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

Posts Tagged: weed

Herbicide injury in avocado

Sometimes weeds are tasty, like amaranth and purslane

From the Topics in Subtropics blog (Oct. 15, 2018) ****************** Although the main objective of herbicide use in avocado orchards (and all crops) is to manage weed populations, sometimes unintentional injury of the crop itself can occur when...

Posted on Thursday, October 18, 2018 at 9:18 AM
Tags: Avocados (6), herbicide (61), herbicide injury (11), weed (25)
Focus Area Tags: Agriculture Food Pest Management

Will climate change affect the sensitivity of weeds to herbicides?

Translocation of glyphosate

Herbicides are the main means of controlling weeds. Recently, there has been increasing concern over the potential impacts of climate change, specifically, increasing temperatures and elevated carbon dioxide (CO2) concentrations, on the sensitivity of...

Posted on Monday, September 10, 2018 at 7:55 AM
Tags: Climate Change (5), glyphosate (31), herbicide (61), horseweed (7), lambsquarter (1), weed (25), weed control (80)
Focus Area Tags: Agriculture Pest Management

Weed Science is everywhere even on summer vacation!

Defoliated tamarisk, some willows coming up in the understory.

Heat is something that many Californians are used to, and live with for several months out of the year, but prolonged triple digit heat is not something I am used to in my corner of the state. Sure it gets hot up here in Lassen County, but there is most...

Posted on Monday, August 27, 2018 at 6:00 AM
Tags: biocontrol (4), Diorhabda (1), tamarisk (1), weed (25)

Bristly Oxtongue Lives Up to its Name

Mature plant of bristly oxtongue. (Credit: Larry L. Strand)

This summer, you may have noticed what looks like a large dandelion plant covered in blisters growing in your lawn or landscape. It's known as bristly oxtongue, and if you examine or touch it you'll see and feel why. The stems and flower bracts are...

Posted on Sunday, August 19, 2018 at 8:00 PM
Tags: annual (3), biennial (1), bristly oxtongue (2), control (41), identify (1), UC IPM (225), UC IPM (225), weed (25), weed gallery (1)
Focus Area Tags: Pest Management Yard & Garden

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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