UCCE Master Gardeners of San Joaquin County
University of California
UCCE Master Gardeners of San Joaquin County

Posts Tagged: herbicides

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

What to do with those tough to control perennial weeds in established alfalfa?


The old saying, “Everything's fine until it's not,” comes to mind when dealing with some tough to control perennial weeds in alfalfa production during the summertime. Such was the case for an alfalfa field in the Sacramento Valley, where weed...

Posted on Friday, August 17, 2018 at 3:54 PM
Tags: Alfalfa (18), herbicides (5), weeds (64)
Focus Area Tags: Agriculture Pest Management

Glyphosate formulations - what's the diff (and what's a salt)?

glyphosate salt cartoon (from www.wheatgrowers.com).  ((the

Glyphosate is one of the most widely used herbicides in the world and is extremely important in many of our orchard, vineyard, and annual crops as well as in non-crop and home situations. However, it can be confusing to understand some of the differences...

Posted on Wednesday, December 20, 2017 at 11:12 AM

Using Herbicides Safely Around Trees

Fig. 1 Severe case of Imprelis herbicide injury to trees. [P. Landschoot, Penn State Extension]

[From the May 2017 issue of the UC IPM Green Bulletin] It's among every landscape professional's worst nightmares: returning to a landscape recently treated with an herbicide to find previously healthy trees looking “strange.” These strange...

Posted on Monday, June 5, 2017 at 12:14 PM

Home made herbicides? Some thoughts about 'Do It Yourself' weed control.

Screenshot 2015-05-27-10-22-22

I was browsing the internet the other day and came across a web-site that told me I could kill weeds without using pesticides. Naturally, I was intrigued and decided to read up on DIY chemical weed control. I won't be posting any recipes on this blog...

Posted on Wednesday, May 27, 2015 at 2:28 PM
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