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Pest/Disease Management

Efficacy of a Hull Split Spray vs. Sanitation for NOW Control

Navel orangeworm (NOW) is most effectively controlled with the cultural practice of winter sanitation. Winter shaking almond trees to remove mummy nuts has proven to decrease next year’s NOW damage better than any other approach. The reason for this is clear. NOW overwinters as larvae in mummy nuts left in the tree after harvest and it is in these nuts the population …

Preventing Bacterial Blast Damage in Almond This Year

In 2023, the cold, wet weather during bloom and leaf-out resulted in bacterial blast damage in many Sacramento Valley almond orchards. If conditions this year are cold and wet during bloom, we may see a recurrence of blast: make a plan now to keep blast damage to a minimum. The Bottom Line: Bacterial blast can be a problem when cold, wet conditions …

Legislation Introduced to Extend Pierce’s Disease Control Program

Last week, Assemblywoman Dawn Addis, (D-Morro Bay) introduced AB 1861 to extend a vital program within the California Department of Food and Agriculture (CDFA) that protects California’s picturesque vineyards and our iconic wine industry from deadly disease. This legislation is sponsored by the California Association of Winegrape Growers and Wine Institute. “The wine industry is integral to the economic success …

Citrus Industry Guide to Fruit Fly Quarantines

Over the last several months, a variety of invasive fruit fly detections have triggered quarantines across numerous counties in California. These fruit fly species – including Mediterranean fruit fly, Mexican fruit fly, Oriental fruit fly, Tau fruit fly and Queensland fruit fly – are considered not established in California. Quarantines and their associated regulatory actions are implemented to stop the …

New Stanislaus County Ag Commissioner Serves as Liaison Between Farmers and California DPR

At Malcolm Media’s recent Tree & Vine Expo, event host Matthew Malcolm was pleased to introduce, Linda Pinfold, the new Stanislaus County Ag Commissioner to attendees.  Watch this brief video to get to know Linda and her emphasis on serving and assisting local farmers in navigating the ever-changing pesticide regulatory environment of California. Please thank this video’s sponsor Thunder Creek Equipment for …

New Invasive Pest Threatens Western Tree Nut Industry

Western tree nut commodities just got through a very tough season, and markets are still less than ideal.  The last thing growers want to hear about is a new pest threatening their orchard production.  But the Carpophilus Beetle has already been under the radar far too long, damaging Central Valley orchards under the guise of “Navel Orangeworm.”  Watch this brief video with …

International Research Conference on Huanglongbing VII Coming March 2024

The California Citrus Research Board (CRB) and the Conference Steering Committee are pleased to share the International Research Conference on Huanglongbing VII (IRCHLB VII) will return March 26-29, 2024, to Riverside, California. The Conference is being produced by the CRB with the support of California’s citrus industry partners and guidance of the international Steering Committee. The California citrus industry is …

State of the California Pest Control Adviser

Pest Control Advisers (PCAs) in California are some of the brightest and versatile in the nation. They each generally cover a wide spectrum of crops grown under a many different conditions and pest challenges.  Watch this brief interview with Ruthann Anderson, President and CEO of the California Association of Pest Control Advisers, as she discusses the current State of the …

Updates to Bulk Citrus HLB Quarantine Requirements

Effective Nov. 22, 2023, the Citrus Pest and Disease Prevention Division (CPDPD) has officially updated the requirements for moving bulk citrus fruit within and from a Huanglongbing (HLB) quarantine area to a packer/processor. Listed below is an overview of the newly updated requirements, per the CPDPD’s Citrus Grower/Grove Manager Information page: If you are moving bulk citrus within a contiguous HLB …

DPR Seeks to Bar Bakersfield Pilot from Applying Pesticides After Drift Incidents

The California Department of Pesticide Regulation (DPR) has asked a Kern County judge to halt pesticide applications by a Bakersfield-area aerial pesticide business accused of several illegal drift incidents that harmed at least one person and damaged property. Defendants in the complaint, filed on Sept. 29, include John A. Slykerman and his company, Agra Fly Inc. DPR is seeking a …

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