California

Here are summaries of some of the IPM research, innovations and projects going on in California, or benefitting California agriculture, communities and natural areas. Projects listed here are not necessarily funded by the Western IPM Center.

Macey Keith stands in front of cotton fiewld with a small microphone in front of her. A sign in front of the field says "Organic Cotton."

Research Aims to Build an Integrated Management Plan for Organic Cotton

Comparing the pest-management power of conventionally grown cotton and organically grown cotton is like pitting the New York Yankees against local Little Leaguers. Yet with 20,000 acres of organically certified land in Arizona growing vegetable and field crops, organic cotton could be an important, and profitable, rotation crop.

Rachel Kesel and Tom Getts stand by a table full of weed management tools. Rachel holds an axe.

Plant Risk Evaluator Tool Helps Identify Potentially Problematic Plants

The easiest pest to manage is the one that’s not there. That’s why prevention and avoidance are first two principles of integrated pest management’s “PAMS Approach,” with monitoring and suppression following behind. It’s also the rationale behind the Plant Risk Evaluator Tool, an online database to evaluate the potential for ornamental and horticultural plants to become invasive weeds in different areas and environments.

Burned areas with ash in them in a grassy area in hills with pines and other vegetation.

Exploring a Fiery Method for Replacing Invasive Grasses

In California and throughout the West, land managers face huge challenges on huge acreage. Threats include invasive annual grasses, drier summers and changing fire regimes. To combat this combined threat, UC Davis researchers are testing a burn-and-replant method as a combined solution.

Annie Krueger of Compliance Services International stands next to a whiteboard titled "Outcomes." There are both whiteboard marker notes and sticky notes on the whiteboard.

Work Group Aims to Make New Endangered Species Rules Workable

“If it’s so complex that it’s impossible, then no one wins.”

That was the key takeaway from a recent two-day workshop in Vancouver, Washington about implementing new U.S. Environmental Protection Agency pesticide-use rules to protect endangered and threatened species.

White, brown and black cows grazing rangeland.

Targeted Grazing Can Reduce Communities’ Vulnerability to Wildfire

With the West in a state of permanent drought and under constant threat of wildfires, it’s more important than ever for land managers to control undesirable vegetation. For fire-prone communities scattered throughout the West’s tinder-dry hills and woods, it can be a matter of life and death. One tool that can help manage vegetation is grazing.

Square test plots, some filled with weeds and others with gravel and few or no plants.

Electric Weed Control Shows Promise

Start with a heaping helping of weeds in an orchard owned by an electrical engineer, then add in a weed scientist and a dash of Western IPM Center funding. What you get is electric weed control – a promising (dare we say shocking?) new way to control weeds in certain landscapes.

Emily Phillips holds out the wing of a barn owl.

Helping Barn Owls Help Farmers

Barn owls are big, beautiful biocontrol.

“Barn owls are rodent-killing machines,” said Sara Kross, an assistant professor in environmental studies at Sacramento State University. “They are natural predators of gophers and voles which can be really horrible pests for agriculture.”

Noah Teller next to vegetation growing over a bare spot.

VIDEO: Studying the Ecological Impacts of Firebreaks

During wildfires, crew use bulldozers to cut firebreaks to remove vegetation and prevent the fire from spreading. It’s effective firefighting, but those bulldozer lines can have lasting impacts on the recovery of vegetation afterward. This video examines new research that is measuring those impacts and developing mitigations.

A canyon in Chino Hills State Park with vegetation, hills and some trees.

The Impact of Firebreaks in Southern California Sage Lands

During wildfires, crew use bulldozers to cut firebreaks to remove vegetation and prevent the fire from spreading. It’s effective firefighting, but those bulldozer lines can have lasting impacts on the recovery of vegetation afterward. New research is measuring those impacts and developing mitigations.

A jar containing emerald ash borers and their frass on leaves.

Dropping the Emerald Ash Borer Quarantine Could Impact the West

The U.S. Animal and Plant Health Inspection Service has proposed lifting the domestic quarantine designed to slow the spread of emerald ash borer, an action that could speed the destructive insect’s introduction into Western states that have so far kept it at bay.

Three UC Davis students hold an owl in front of a vineyard.

VIDEO: Helping Barn Owls Help Growers

Barn owls are rodent-killing machines – natural predators of gophers and voles and other rodent pests of agriculture. This video looks at new research helping growers use both the owls and chemicals, in concert and safely.

A night-vision photo of a coyote with a bush behind it.

Learning to Manage – and Live with – Coyotes in Southern California

Forrest Gump believed life was like a box of chocolates – you never know what you’re going to get inside. It’s much the same for graduate student Danielle Martinez, except she isn’t reaching for tasty chocolates. She’s digging into coyote stomachs as part of a larger research effort studying urban wildlife in Southern California.

Wooly apple aphids on an apple branch.

Pest or Beneficial: Earwigs in Apples

For growers, a fundamental element of integrated pest management is knowing what pest and beneficial species are in your fields. But what if there’s an insect and no one knows if it’s good or bad? That was the question for apple growers about earwigs.

A sign that says "Sip Certified: Sustainability in Practice."

Eco-Label Programs Promote IPM, but Aren’t Perfect

Eco-label programs  have clear benefits and promote more sustainable pest-management and growing practices. They also provide certain benefits for growers but have downsides as well. Significant differences between the programs can make judging eco labels challenging for consumers, and with dozens of similar yet competing certification programs and standards, chaos is likely for the foreseeable future.

A person looking at bed bug displays and papers about bed bugs on a table. A crowd is in the background.

Tribal Bed Bug Workshop Dispels Myths

There is a lot of fear about bed bugs, and a stigma surrounding them that can keep some people from seeking help with a bed bug infestation. But bed bugs have been hanging around humans for a long time and aren’t going anywhere anytime soon. 

Jocelyn Millar in a lab.

Decoding Chemical Communications to Control Insects

University of California, Riverside chemical ecologist Jocelyn Millar identifies the chemical signals insects use to communicate, then synthesizes versions of them to help monitor, trap or disrupt their activities. Lygus bug is just one of dozens of species Millar and his team are working on. The common thread is that they all communicate chemically, and decoding those chemical signals can create new ways to control those species where they are pests.

A blurry picture of a fallen tree. The text on top of the picture says, "Gold Spotted Oak Borer: A Threat to California's Oaks."

VIDEO: Gold Spotted Oak Borer, or GSOB, in Southern California

The gold spotted oak borer is a tiny beetle causing huge damage in Southern California. It infests the region’s towering oak species – coast live oak and canyon live oak – and can kill a centuries-old tree in just a year or two. This video follows the beetle from San Diego to Los Angeles counties to see what damage it’s doing and what many fear may come next.

An urban garden with the words "Urban Gardening: Pest Pressures and Solutions" on top.

VIDEO: Urban Farm Pest Pressures and Solutions

Learn about the pest pressures faced by urban farmers — and how integrated pest management provides economical solutions — with Ariel Agenbroad, Local Food & Farms Advisor with University of Idaho Extension.

The first shot of the safflower video, showing a safflower field with the words "Safflower: Key to an Areawide IPM Program" on top.

VIDEO: Safflower Makes an Areawide IPM Program Work

In Kings County, California, safflower is an important rotational crop that improves the soil health and makes farming more productive. It’s also the key to an areawide IPM program that manages pests and reduces pesticide sprays.

A cow on top of a rangeland hill.

Hill-Climbing Cows May Bring Big Benefits to Western Rangeland and Ranchers

Conventional wisdom says cows don’t go up steep slopes. They don’t climb hills and don’t travel very far from water. But some cows never got that memo, and researchers are looking into whether naturally hill-climbing cows can provide production and environmental benefits in the rugged West.

A close-up of safflower.

Safflower Makes an Areawide IPM Program Work

Safflower, a low-value oil seed crop, is the key to an incredibly successful soil health and areawide integrated pest management program in California — and a great illustration of how IPM works. 

A classroom.

School IPM Protects Kids from Pests and Pesticides

Both pests and pesticides are potentially harmful for kids and adults in schools. Common schools pests like the German cockroach or mice can carry disease and cause allergic responses. And children can be more at risk for harm from sprayed pesticides because of their behavior – playing on the floor or in grassy fields, for instance – and because of their developing physiology.

A section of a cover of a handbook titled "Livestock Grazing Guidelines for Controlling Noxious Weeds in the Western United States."

Grazing Guidelines for Noxious Weed Control

Researchers, ranchers, and land managers know that livestock grazing can be a valuable and selective noxious-weed management tool, and this guide summarizes all the effective techniques.

The Western IPM center logo.

IPM Adoption is Widespread in the West

Many integrated pest management practices are so widely adopted in Western agriculture they have become conventional pest management. That is one of the key findings of a new report by the Western Integrated Pest Management Center titled Adoption and Impacts of Integrated Pest Management in Agriculture in the Western United States.

A section of the front cover of a guide called "Medusahead Management Guide for the Western States."

New Guide Helps Land Managers Control Medusahead

As an ecosystem-transformer species, medusahead is among the worst weeds. Not only does it compete for resources with more desirable species, but it changes ecosystem function to favor its own survival at the expense of the entire ecosystem.

Someone holding two Prionus beetles.

Center Funding Helps Develop a Better Way to Control Prionus Beetles

Hop growers in the Northwest – as well as a sweet cherry, apple and other fruit growers around the nation – now have a new mating disruption tool to combat the Prionus beetle and its root-boring larvae, thanks to research funded in part by the Western IPM Center.

A cropped chart showing the history of cotton IPM and the reductions in pesticide usage-- 11 overall foliar sprays in 1990 reduced to 2 in 2011.

Spray Reductions in Cotton

For the past 15 years, researchers have been tracking pesticide use on cotton fields in the Southwest, and the reductions they’ve documented have been nothing short of remarkable.

Different colors of onions drying in research plots.

Progress against Onion Pests

An update to the Pest Management Strategic Plan for dry bulb storage onions shows progress against thrips and Iris yellow spot virus, but still challenges to overcome.