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

Figure 1. Mustard and other annual plants dry out at the beginning of the summer, creating fuel that could quickly burn during a fire. Photo by Luca Carmignani, UCCE.

Weeds and Wildfires

October 15, 2023

By Belinda Messenger-Sikes, Karey Windbiel-Rojas

Wildfires are part of California's ecosystems, and they do not have to lead to the destruction of structures and livelihoods. Each of us can contribute to improving wildfire resilience, from individual homeowners and businesses to entire communities.

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Job announcement :: Maintenance and Operations Manager

October 12, 2023

By Gale Perez

Recruitment #23-9527-01 Date Opened 9/29/2023 12:00:00 AM Filing Deadline 10/23/2023 5:00:00 PM Salary $67.94 - $67.94/hour; $141,315.20 - $141,315.

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Throw Out Your Calendars, It's Time For Phenology-Based Weeding

October 11, 2023

By Chris J McDonald

It's October and it's weeding season! That's not a phrase we regularly hear. In many years in California October can be a month where weeding is a low priority task.

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Photo 2: Brad Hanson, a professor of Cooperative Extension in the UC Davis Department of Plant Sciences, examines a stock of Orobanche ramosa pulled from off a tomato plant in nearby Woodland, where scientists are studying the parasitic weed. (Emily C. Dooley/UC Davis)

Parasitic weeds threaten tomato plants on California farms

October 9, 2023

By Gale Perez

At first glance, Orobanche ramosa looks like an interesting blossoming plant, one that could add a unique flair to flower arrangements. But it's a parasitic weed that attaches to roots, sucks out nutrients and is threatening California's $1.5 billion processing tomato industry.

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Figure 1: Italian ryegrass in wheat trials 36 days after application (Bird's Landing). Wheat rows are visible in a linear pattern in each picture. Italian ryegrass escapes can be seen in between the rows. Note that Osprey stunted many of the IR seedlings, but weeds were able to recover. Click on the image to expand.

Regional Italian ryegrass herbicide trials underscore the importance of IPM in weed management

October 1, 2023

Summary Review Results from this year's Italian ryegrass (IR) herbicide trials helped quantify differences in herbicide resistance among IR populations within the southern Sacramento Valley. The trial took place in Bird's Landing, CA (near Rio Vista), and was replicated farther north in Esparto, CA.

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