- (Focus Area) Pest Management
- Author: Lauren Fordyce
There are many types of “good bugs” commonly found in the garden or landscape. In integrated pest management (IPM) we refer to “good bugs” as “natural enemies” or “beneficial organisms”. Natural enemies can include insects, but also mites, pathogens, and vertebrates like birds and lizards. They can kill or reduce pest populations by feeding directly on the pest, parasitizing the pest, or infecting the pest with a pathogen, reducing the need for pesticides.
Keep an eye out for the common natural enemies listed below and learn to recognize their egg and immature stages too!
- Lady beetles (ladybugs). There are about 200 different species of lady beetles in California. Many species feed on soft-bodied pest insects like aphids, soft scales, mealybugs, whiteflies, mites, and psyllids. They will also eat pest insect eggs and larvae.
- Soldier beetles (leatherwings) adults feed on aphids and other soft-bodied insects. Their larvae live in the ground and feed on pest eggs, larvae, and pupae in the soil.
- Lacewings feed on mites, aphids, caterpillars, leafhoppers, mealybugs, psyllids, scales, and thrips! While some adult lacewings can be predacious, their larvae are most useful in pest control.
- Syrphid flies, also called hover flies or flower flies, resemble bees and are pollinators. Their larvae feed on aphids, mealybugs, and other soft-bodied insects.
- Assassin bugs can feed on caterpillars and other larvae, as well as adults and nymphs of beetles. They are known to attack just about any insect, but can bite people if provoked.
- Spiders. While many people fear spiders, they can actually help control many pests in and around the home and garden. Flower spiders, jumping spiders, and wolf spiders are examples of common beneficial garden spiders.
To learn more about natural enemies, see these resources:
- Pest Notes: Biological Control and Natural Enemies of Invertebrates (fact sheet)
- Natural Enemies Gallery
- Natural Enemies and Beneficial Insects: What Are They? (webinar)
- Author: Kathy Keatley Garvey
In the human world, we recognize Mother's Day as a special day to celebrate all mothers. It's a day that Anna Jarvis of Grafton, West Va., established on May 10, 1909 with a worship service at St. Andrew's Methodist Church, Grafton.
Lady beetles, aka ladybugs, are mothers, too. The female lays a batch of eggs, from 10 to 50, at one time, and can lay about 1000 eggs in her lifetime, scientists say.
Beneficial insects! Yes, but in their larval form they eat even more.
Mature lady beetles will feed on 20 to 25 aphids per day, but their late-stage larvae will consume 10 times that number, making them far more effective predators, according to Whitney Cranshaw, a professor and Extension entomologist with Colorado State University (now emeritus), in a July 2018 article in Phys.Org.
A salute to lady beetles and their larvae on Mother's Day!
- Author: Kathy Keatley Garvey
Being bothered by mosquitoes and troubled about the risk of diseases?
Mosquitoes are not just annoying. They can be deadly.
The seminar, titled "Natural Mosquito Control," is part of the California Farm Academy Speaker Series, and will take place from 4:30 to 7:30 p.m. at CLBL, located at 40140 Best Ranch Road, Woodland. The event begins with pizza and mingling, “until about 5:30, and then the presentation,” said spokesperson Julia Hobbs Thomas. Reservations can be made on Eventbrite.com at this link.
The event is billed as "a discussion about both native and invasive species, what diseases they can spread, and how healthy ecosystems can create habitats that keep them in check. Agriculture can play a big role, because pesticide use can damage populations of beneficial insects like dragonflies. You'll also pick up a few tips to avoid being bitten!"
Wood-fired pizza and beverages will served beneath the canopy of a century-old valley oak, she added. Attendees can also bring food or beverages to enjoy or share.
Said Attardo: “I will be focusing on educating people about the most imminent risks of mosquito-borne diseases in California coming from West Nile Virus—due to native Culex mosquitoes predominantly—and Aedes aegypti vectored diseases such as dengue, Zika, Chikungunya, and yellow fever. I'll discuss places these mosquitoes breed in suburban and urban habitats, as well as ways people can eliminate and prevent creation of breeding sites.“
Attardo specializes in medical entomology, reproductive physiology, molecular biology and genetics. He recently hosted a UC Davis symposium, sponsored by the Deaprtment of Entomology and Nematology and the Pacific Southwest Center of Excellence in Vector-Borne Diseases, on “Tule and Cattail: A Tale of the Marsh Economy and Its Role in Human Health and Wellbeing” that aimed "to advance the land management aims of local tribal communities and provide a platform to educate about the importance of maintaining wetland biology for climate change, ecological and human health, and vector control." Attardo addressed the symposium with collaborator Diana Almendariz, a traditional ecological knowledge specialist and a cultural practitioner of Maidu/Wintun, Hupa/Yurok traditions, heritage, and experiences.
A global expert on vectorborne diseases, and renowned for his groundbreaking work on tsetse flies, Attardo received the Medical, Urban, and Veterinary Entomology Award in 2022 from the Pacific Branch, Entomological Society of America. (See news story)
He joined the UC Davis Department of Entomology and Nematology in 2017 from the Yale School of Public Health, where he served as a research scientist studying the reproductive biology of tsetse flies. Attardo holds a doctorate in genetics (2004) from Michigan State University, studying with Alexander Raikhel.
For more information on the May 15 seminar, contact Thomas at julia@landbasedlearning.org or 415-271-0090.
- Author: Lauren Fordyce
The University of California Statewide IPM Program (UC IPM) has an exciting, newly updated resource to help you better understand pesticide active ingredients and the risks different active ingredients pose to people and the environment.
The Pesticide Active Ingredient Database is designed for urban audiences including the general public, Master Gardeners, nursery and garden center staff, pest control operators, landscapers, and more. The active ingredients included in this database can be found in many commonly available pesticide products in California. The database contains a variety of pesticide types, including insecticides, herbicides, rodenticides, antimicrobial products, and more.
Each active ingredient in the database has its own page where you can learn what it is, how it works, and what pests it can control. You can also view example products available to the general public or licensed professionals, and a table displaying the potential hazards of the active ingredient. The potential hazards table includes toxicity information for water quality or aquatic wildlife, natural enemies, honey bees, and people or other mammals. A glossary of pesticide terms is available as well to help you understand pesticide terminology.
You can use this database to compare toxicity ratings of pesticides by clicking the “Compare Risks” link or button found on UC IPM's Pest Notes fact sheets. This will help you find the least-toxic pesticide active ingredients to control a specific pest.
We hope you find this newly updated resource helpful and share with others who may be interested.
- Author: Lauren Fordyce
Check out our webinars planned for summer 2024:
June 20, 2024 - Flea Control & Diseases: Starting from Scratch
Fleas are small but mighty insects that are important medical and veterinary pests. They can vector pathogens and parasites, and their bites cause discomfort and irritation. In this webinar you'll learn how to keep yourself and pets safe from fleas and flea-borne diseases.
July 18, 2024 - Common Wood Decay Fungi in Landscape Trees of California
Trees are a valuable part of our landscapes. However, older trees can harbor wood decay fungi, which can be associated with an increased risk of tree failure or branch breakage. In this webinar, urban forestry expert Igor Lacan will discuss some wood decay fungi that are commonly seen on trees in urban landscapes in California, the effect(s) of fungi on the tree, and related considerations in tree management.
August 15, 2024 - Back to School Pests
With students heading back to school, now is a good time to talk about pests in schools and childcare centers. In this webinar, Karey Windbiel-Rojas will talk about head lice, bed bugs, rats, cockroaches, and more. We will also cover the use of disinfectant wipes and pesticide safety.
September 19, 2024 - Improving Professional Ant Control Services
In California, the Argentine ant is among the most common nuisance ant species treated by pest management professionals and the general public. In this webinar, you will learn how the university researchers and pest management companies are working together to improve pest ant management in urban residential settings.
Webinar topics for October and November will be announced mid-summer.
To view recordings of our past webinars, visit the YouTube playlist: https://www.youtube.com/playlist?list=PLo3rG4iqv4gGC9sa9Tdl_WfCV4BNMHraI
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