Blog posts by pests and pesticides

Written by Peter Nell on Monday, October 8, 2018 on advocacy, pests and pesticides, policy

The California Department of Pesticide Regulation (DPR) will hold a public hearing and commenting period regarding the designation of chlorpyrifos as a toxic air contaminant. Chlorpyrifos is a prohibited pesticide in organic production.  DPR will accept written comments on chlorpyrifos until 5:00 p.m. on November 9, 2018. Comments can be submitted electronically to dpr18002@cdpr.ca.gov or via fax to (916) 324-1491.  DPR will hold a public hearing on Thursday, November 8, 2018 at 2:00 p.m. at: California Environmental Protection Agency Headquarters BuildingSierra Hearing Room1001 I...
Written by Jane Sooby on Tuesday, July 10, 2018 on general organic, pests and pesticides

A blog entry written by Alejandro Del Pozo-Valdivia, entomologist with Cooperative Extension Monterey County, reports that bagrada bug adults were found on shortpod mustard plants north of Soledad and near King City. While no nymphs or eggs were found, their offspring may be moving into adjacent cole crops soon.    Newly planted or early-stage mustard family crops are most at risk from bagrada bug damage. Dr. Del Pozo-Valdivia encourages PCAs to check crops that fit this description in areas surrounding Soledad and King City.   No bagrada was found earlier this season in the San Ardo area,...
Written by Guest Blogger on Monday, May 21, 2018 on CCOF, education, events, food safety, general organic, grower, pests and pesticides

Organic Grower Summit December 12-13, 2018 at the Monterey Conference Center   The Organic Grower Summit (OGS) has announced Western Growers will again serve as the Ag Technology sponsor for this year’s event. As the Ag Technology sponsor, Western Growers will help coordinate the attendance of technology companies as exhibitors, and help facilitate elements of the technology area at the event.    To date, OGS has secured over 45 committed exhibitors and 35 sponsoring companies.   Among participating exhibitors are leaders in the fields of seed, soil amendments, food safety, and ag technology...
Written by Jane Sooby on Tuesday, May 8, 2018 on general organic, pests and pesticides

A recent blog post by Alejandro Del Pozo-Valdivia, UC Cooperative Extension entomologist based in Salinas, addresses reports he’s received about “red aphids” being found in organic romaine lettuce varieties that are resistant to the lettuce aphid.   Laboratory analysis showed that the “red aphids” were not lettuce aphids, but were actually either potato aphids or foxglove aphids.    Del Pozo-Valdivia’s blog shows pictures of different species of aphids and makes the point that body color is not the best trait to use to identify aphid species because they can change color during their lifespan...
Written by Guest Blogger on Tuesday, May 1, 2018 on biodiversity, grower, pests and pesticides

Hedgerows, windbreaks, filter strips, grassed waterways, riparian areas, and beetle banks are increasingly being planted on farms and can have multiple functions: they can serve as habitat for beneficial insects, pollinators, and other wildlife; provide erosion protection and weed control; stabilize waterways; serve as windbreaks; reduce non-point source water pollution and groundwater pollution; increase surface water infiltration; buffer from pesticide drift, noise, odors, and dust; act as living fences and boundary lines; increase biodiversity; and provide an aesthetic resource.    Many...
Written by Jane Sooby on Monday, November 13, 2017 on advocacy, pests and pesticides, regulatory

California’s Department of Pesticide Regulation (DPR) released long-anticipated rules restricting pesticide applications close to public schools and daycare facilities.    The new rules require that pesticides using aircraft, airblast sprayer, sprinkler chemigation, or applied as a dust, powder, or fumigant between 6 a.m. and 6 p.m. Monday through Friday be located at least ¼ mile from schools.    At least 25-foot distance is required when application is made via ground-rig sprayer, soil injection equipment, or other types of applications including drip or flood chemigation.    There are no...
Written by Guest Blogger on Monday, July 24, 2017 on pests and pesticides, research

The laboratory of Dr. Brian Hogg of the U.S. Department of Agriculture’s Agricultural Research Service in Albany, California, is seeking sites for Bagrada bug research in California.    Any cole crop fields or weed patches that are currently infested with Bagrada bug would work for our purposes. We are investigating whether native predators or parasitic wasps attack Bagrada bug eggs as part of our efforts to develop a biological control program for Bagrada bug. We would put out frozen Bagrada bug eggs (dead, so there is no possibility of spreading the bug around) on index cards and leave them...
Written by Zea Sonnabend on Monday, May 15, 2017 on education, grower, help and tips, pests and pesticides

Spring is the time to anticipate pest problems that may emerge with the warmer weather of summer. It is a good time to remember what to look out for and to take some preventative steps to keep ahead of the pests. After the very wet winter in California, we might be about to experience an abundance of some of these pests, as well as invasive plants.   Because in California we grow so many crops over such a long season, there are always pests of concern.  Some pests are already under quarantine in certain regions, while other species are not quarantined but are worth preparing for. This blog...
Written by Zea Sonnabend on Tuesday, January 17, 2017 on advocacy, pests and pesticides, policy


The stakes are high in the fight to save California citrus from the threat of Asian citrus psyllid (ACP) and the disease it spreads, Huanglongbing (HLB) (also known as citrus greening). In Florida, more than 90 percent of commercial citrus trees are estimated to have HLB, and there has been a 70 percent decline in production, with an economic impact of $7.8 billion. California growers and government have invested heavily in trying to contain the spread of the pest and disease. Because of this, and somewhat because of the varied geography of California compared to Florida, the pest has not...
Written by Jane Sooby on Monday, December 12, 2016 on advocacy, pests and pesticides, policy

The fourth issue of Bagrada Bug News, a free newsletter dedicated to developing organic management strategies and biocontrol of the bagrada bug, is now available online. Bagrada bug, Bagrada hilaris, is an invasive stinkbug that first appeared in California in 2008. A prolific breeder with few organic control options, the pest has caused significant economic losses for organic growers, particularly in brassica crops such as broccoli, cauliflower, cabbage, and other mustard family members. CCOF joined with the California Department of Food and Agriculture to form a Bagrada Bug Working Group in...
Written by Guest Blogger on Friday, October 21, 2016 on pests and pesticides, research


A California Deptartment of Food and Agriculture grant proposal, Biological Control of Bagrada Bug, Bagrada Hilaris (Pentatomidae), was selected for funding by the 2016 Specialty Crop Block Grant Program. This project will provide a sustainable pest management strategy for suppressing this pest in California. First reported in the United States in 2008, the bagrada bug has spread throughout agricultural areas of Imperial and Riverside counties, up through the Central Valley, and along the coast from San Diego to Monterey Bay. Currently, the only means for controlling this pest is the use of...
Written by Jane Sooby on Monday, September 19, 2016 on advocacy, pests and pesticides, policy


The third edition of the Bagrada Bug News is now available to read and print on demand. This edition reports on work being conducted in California and France to test promising natural enemies of bagrada bug. Scientists collected three species of wasps that lay their eggs in bagrada bug eggs, thus killing the nymphs inside, in South Africa and Pakistan and are now assessing their potential for release as natural predators of bagrada bug in California. This issue also features a lengthy article on the role of weeds as refuge for bagrada bug in California’s Salinas Valley. Shortpod mustard and...
Written by Guest Blogger on Monday, August 15, 2016 on pests and pesticides, research


Cole Crops

As part of the U.S. Department of Agriculture (USDA) Agricultural Research Service’s efforts to develop a biological control program for the bagrada bug, the laboratory of Dr. Brian Hogg at the USDA in Albany, California, is investigating whether any native predators or parasitic wasps attack bagrada bug eggs. The laboratory is currently looking for organic farms growing cole crops in the Central Valley to include in its survey. Any cole crops will work for the study, although fields with a history of bagrada bug infestation would be ideal. The study involves placing frozen bagrada bug eggs (...
Written by Jane Sooby on Monday, August 1, 2016 on pests and pesticides


The disease-carrying pest Asian citrus psyllid (ACP) has moved north from southern California and now threatens the central and northern regions of the state. To combat the pest, the California Department of Food and Agriculture (CDFA) has increased areas under quarantine, mounted a comprehensive search-and-destroy effort, and is preparing to release swarms of psyllid-killing wasps to route the pest. ACP Impact and Challenges ACP carries a bacterium that causes a deadly disease in citrus trees and related tree species called huanglongbing or citrus greening disease. Infected trees first...
Written by Jane Sooby on Monday, February 29, 2016 on advocacy, grower, pests and pesticides, policy

The Bagrada Bug Working Group has launched its first issue of the quarterly publication Bagrada Bug News. The Bagrada Bug Working Group is a collaboration between CCOF and researchers at CDFA’s Plant Health and Pest Prevention Services, UC Cooperative Extension, USDA-ARS, UC Davis, UC Riverside, and University of Arizona. The working group convened in 2015 to address the challenge of managing this emerging pest in organic mustard-family crop production. The working group’s first major activity was holding a public meeting in December 2015 in Salinas. Six scientific talks on bagrada bug...

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