Cover Crops in Almonds Can Displace Annual Winter Weeds

Steve Haring Working With UC Davis on Cover Crops

By Mikenzi Meyers, Associate Editor

Depending on your location, cover crops can have a big impact on your fields. Steve Haring, second-year Ph.D. student in the Department of Plant Sciences at UC Davis, has been collecting research on how different climates influence the effectiveness of cover crops.

Almond Cover Crop Displacing Weeds

“As we try to design cover crops, there are a lot of different paths we can take, and it’s important to test these different things out and see what is best for the specific things we can use cover crops for in the Central Valley,” Haring said.

He further mentioned that for optimum weed control in the Valley, growers should plant in the early winter months in order to prevent annual winter weeds.

Haring worked with the UC Davis Cooperative Extension on three different sites across both the Central Valley and northern Sacramento Valley collecting data on growth rates for cover crops. He found that because the northern valley had more direct sunlight hit the ground, cover crops thrived, and as a result, weeds were minimized.

The research will not stop there, though, Haring ensured. “The study I’m working on is funded by the Almond Board, and it’s continuing for a second year and maybe a third, so we’re trying to repeat it and validate and then also sort and synthesize information because there are people working on weeds but also working on water, insect pests, pollinator health, nematodes, and call sorts of ecosystem services,” he concluded.

Annual Nickels Field Day May 14

Report Title


Wednesday, May 14, 2014 Marine Avenue, Arbuckle, CA

Popular Nickels Field Day will focus on research.


8:30 am — Registration
Coffee and Danish provided by Farm Credit Services of Colusa-Glenn, ACA

9:00 am — Field Topics:

Monitoring soil moisture to guide irrigation decisions

Larry Schwankl, Cooperative Extension Specialist, LAWR, UC Davis

How well is your irrigation system performing?

Kevin Greer, Tehama Co. Resource Conservation District Mobile Irrigation Lab Post-harvest canopy health and yield the next season

Ted DeJong, Professor, Plant Sciences Department, UC Davis

Applying crop evapotranspiration estimates in on-farm water management

Allan Fulton, UCCE Water Resources Advisor, Tehama, Glenn & Colusa Counties Measuring crop stress to make irrigation decisions

Rick Buchner, UCCE Farm Advisor, Tehama County

Almond orchard hedging

Bruce Lampinen, Cooperative Extension Specialist, Plant Sciences Dept., UC Davis

Rootstock trial review

Franz Niederholzer, UCCE Farm Advisor, Colusa/Sutter/Yuba Counties

Nitrogen cycle inhibitors

Martin Burger, Research Scientist, LAWR, UC Davis

12:15 pm – Lunch by reservation, proceeds to benefit the Pierce FFA Program RSVP to the UCCE Colusa Office at (530) 458-0570

$12 prepaid, $15 at the door

Luncheon talk:

Active Groundwater Management – An Assessment of the Sacramento Valley’s Groundwater Resources

David Guy, President, Northern California Water Association
Paul Gosselin, Director, Butte Co. Department of Water and Resource Conservation

Program organized by:
Franz Niederholzer, UC Cooperative Extension, Farm Advisor, Colusa/Sutter/Yuba Counties

UCCE Colusa County • 100 Sunrise Blvd., Suite E • Colusa, CA 95932
Office 530.458.0570 • Fax 530.458.4625 • • Website: