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Pest/Disease Management

Asian Citrus Psyllids Found in Fresno County

The California Department of Food and Agriculture’s Plant Pest Diagnostic Center (PPDC) has identified two Asian citrus psyllids (ACP) on a glassy-winged sharpshooter trap from a packinghouse in the Orange Cove area of Fresno County. This has been the first time that the ACP has been detected in Fresno County since November 2019. Following confirmation of the ACP detections, agricultural …

Citrus Growers Encouraged to Increase Vigilance Following Recent ACP Detections in Central Valley

Following recent Asian citrus psyllid (ACP) detections in the Central Valley over the last few weeks, growers, packers, haulers and all citrus industry members are encouraged to be extra vigilant in their ACP mitigation steps and adherence to regulatory practices. Recently, multiple ACP were detected on traps at a packinghouse in the Woodlake area of Tulare County. Upon confirmation, visual …

Citrus Canker in Nursery Stock Sold to CA, CDFA & USDA Take Action to Identify & Destroy Affected Plants

Citrus Pest & Disease Prevention Program — The United States Department of Agriculture’s Animal and Plant Health Inspection Service (APHIS) has confirmed the presence of citrus canker disease in a nursery in South Carolina. The nursery sells plants to consumers through online sales, including four locations in California since August 2021. Retail nurseries did not receive these plants. Citrus canker causes citrus …

Fresno County Vacancy on Citrus Pest & Disease Prevention Committee

The California Department of Food and Agriculture is announcing one vacancy 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, outreach and education programs and programs for surveying, detecting, analyzing, and treating pests and diseases …

Grant to Support Affordable Testing to Fight Little Cherry Disease

Washington State University (WSU) will help cherry growers test more trees for the damaging Little Cherry Disease thanks to a Washington State Department of Agriculture Specialty Crop Block Grant received by the Washington State Tree Fruit Association. Named for its most distinct symptom—small, colorless fruit—what growers call ‘Little Cherry’ is a simultaneous outbreak of Little Cherry virus-2 and the X-disease …

Research Indicates Paint Not Effective At Protecting Young Avocados From Herbicide Drift

California Avocado Commission — While it is often common practice for fruit growers to apply white latex paint to the bottom 2 to 3 feet of young, newly planted trees in order to provide some protection from herbicide drift, researchers note there is little evidence to prove this practice is effective. A recent blog post by Dr. Ben Faber summarized the …

Areawide, Coordinated ACP Treatment Participation More Important Than Ever For Citrus Growers

As the threat of Huanglongbing (HLB) continues, industry members know that the best way to prevent HLB from infecting our groves is to limit populations of the Asian citrus psyllid (ACP), which spread the deadly disease. This winter, it’s critically important for California’s citrus growing operations to actively participate in local, area-wide or coordinated treatments to further boost our industry’s efforts in …

Costa Rican Orange Production and Exports Expected to Rebound in 2022 Despite Battle with HLB

After overcoming COVID-related labor and supply chain disruptions, Costa Rica’s orange production is expected to rebound to 300,000 metric tons in 2022, pushing total orange juice exports slightly higher to 33,000 metric tons. Despite some success in mitigating the worst impacts of citrus greening, the disease is expected to limit near-term prospects for Costa Rican industry growth. Commercial orange production …

HLB Quarantine Expansion Connects Boundaries in Jurupa Valley and Riverside Areas

Effective Dec. 6, 2021, the California Department of Food and Agriculture (CDFA) has expanded the Huanglongbing (HLB) quarantine boundaries in Riverside and San Bernardino counties in the Jurupa Valley and Riverside areas to create one quarantine area, connecting parts of Orange, Los Angeles, Riverside and San Bernardino counties. A map of the boundary expansion can be found below and at https://www.cdfa.ca.gov/plant/hlb/regulation.html#maps. …

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