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Pest/Disease Management

How to Prevent Crown Gall in the Orchard

Keep getting crown gall in the orchard? Watch this brief interview with Kern County Area Orchard Systems Advisor Mohammad Yaghmour as shares a few simple steps on how to effectively prevent this detrimental infection.  Read more in Pacific Nut Producer and California Fresh Fruit Magazines. Please thank this video’s sponsor Trece for their industry support.

Novel Treatment Causes Killer Citrus Disease to Leak & Die

New research affirms a unique peptide found in an Australian plant can destroy the No. 1 killer of citrus trees worldwide and help prevent infection. Huanglongbing, HLB, or citrus greening has multiple names, but one ultimate result: bitter and worthless citrus fruits. It has wiped out citrus orchards across the globe, causing billions in annual production losses. All commercially important …

CDFA Seeking New Grower Representative for Citrus Pest & Disease Prevention Committee

The California Department of Food and Agriculture (CDFA) is seeking a grower representative with operations in the Fresno County area to sit as a member on the Citrus Pest and Disease Prevention Committee. The Committee advises the CDFA Secretary on activities associated with the statewide citrus specific pest and disease work plan that includes – but is not limited to …

First CLas-Positive Asian Citrus Psyllid Found in San Diego

An Asian citrus psyllid (ACP) sample – confirmed positive for Candidatus Liberibacter asiaticus (CLas), the bacteria that causes Huanglongbing (HLB) – was collected from a residential property in the Fallbrook area of San Diego County. Confirmed by Citrus Research Board’s Jerry Dimitman Laboratory, this adult psyllid sample is the first CLas-positive ACP found in San Diego County.While the first confirmation of a CLas-positive ACP in …

After 100 years, Cornell University Plant Pathologists Revisit Fire Blight Hypothesis

Historically credited as being the first bacterium ever characterized as a plant pathogen, fire blight is a bacterial disease that leads to significant losses of pear and apple. The role of insects in the spread of this disease has been long studied. In a new study, plant pathologists based at Cornell University and Cornell AgriTech take a hypothesis that has …

Oak Tree Mulch Study to Help Suppress Citrus Disease

University of Florida Institute of Food & Agricultural Sciences – Florida citrus growers who face the most severe citrus disease in history notice how citrus trees under oak tree hammocks appear to tolerate the disease. Lukas Hallman believes oak trees may hold a compound that boosts the citrus trees’ ability to tolerate the disease. Hallman is a graduate student at …

Stay Vigilant with Asian Citrus Psyllid Finds on the Rise

In the past few months, we have seen sporadic Asian citrus psyllid (ACP) detections popping up across California. While the citrus industry’s efforts have thus far kept Huanglongbing (HLB) out of commercial groves, these recent ACP detections are a reminder that we cannot let our guard down. The most effective way to prevent the spread of HLB is to keep …

Root Bacteria Could Help Defeat Fatal Citrus Disease

A UC Riverside-led team is looking at tiny underground microorganisms for a way to prevent a huge problem — Huanglongbing, a disease with no cure that has decimated citrus orchards worldwide. The disease, also known as HLB or citrus greening, has multiple names but the same ultimate result: bitter and worthless citrus fruits. By some estimates, the end of citrus …

$12 Million to Eradicate an Invasive Rodent of Unusual Size

You may have heard of them in the comedy film Princess Bride as “Rodents of Unusual Size”, but this is the real thing — only not so large and formidable.  Nutria were originally introduced into the United States as part of the fur trade in the late 1800s, but were eradicated from California in the 1970s.  They made a sudden …

University of Florida Awarded Grants to Continue Fight Against Citrus Greening

University of Florida researchers hope to discover new methods to help citrus growers fight the deadly citrus greening (or Huanglongbing) disease with cost effective, long-term sustainable treatments with the support of recently awarded federal grants.  Three teams of scientists from UF’s Institute of Food and Agricultural Sciences received nearly $4.5 million in U.S. Department of Agriculture funds to study new …

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