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Below you'll find a list of all posts that have been categorized as “Pests”
Apurba Barman, assistant entomology professor at the University of Georgia (UGA), recently wrote about citrus leafminer (CLM) damage resuming in Georgia groves. His article provided management recommendations, including timing of insecticides. Edited excerpts follow: PEST DAMAGE As the temperature rises, so does the potential for CLM attack. CLM is a serious pest resulting in feeding damage to young shoots and …
The California Department of Food and Agriculture (CDFA) is responding after invasive glassy-winged sharpshooter (GWSS) insects were found on shipments of grapevines sold at select Costco locations in Northern California between April 21 and May 19. GWSS spreads the bacterium that causes Pierce’s disease, a fatal grapevine disease that threatens California vineyards. It can also damage citrus trees, landscape plants …
Classical biological control is having a very significant impact on populations of the Asian citrus psyllid (ACP) in Cyprus, according to Ángel Marhuenda, director general of common agricultural policy for the Valencian Institute of Agricultural Research (IVIA). ACP is the vector of huanglongbing (HLB) disease. Marhuenda said, however, that “the detection of residual populations of the vector indicates that continued …
University of California Agriculture and Natural Resources (UCANR) recently issued an Extension advisory regarding citrus mealybug. Citrus mealybug feeds on plant sap and is commonly found in protected areas of the tree, including under the calyx of fruit, in clusters of leaves and within dense canopy growth. Mealybug infestations can reduce tree vigor, contaminate fruit with honeydew and sooty mold, …
A team of nine researchers led by University of California Davis (UC Davis) entomologist Mia Lippey recently published a paper on climate warming and the effect on agricultural pests. Their work, Field Data Challenge Predictions of Universal Crop Pest Proliferation Under Warming, appeared in the Proceedings of the National Academy of Sciences. It contradicts experiments indicating that arthropod crop pest densities will …
By Lukasz Stelinski For many Florida citrus growers, pest management has become closely tied to Asian citrus psyllid control. That is understandable. The psyllid vectors the bacterium associated with citrus greening, and long-term disease pressure has pushed many operations toward frequent insecticide use. But frequent spraying comes at a cost. The more often the same chemistry is used, the faster …
Sandipa Gautam, University of California area citrus integrated pest management (IPM) advisor, issued an Extension advisory for California red scale (CRS). The scale is a key pest of citrus in the San Joaquin Valley. Key points of the advisory are as follows: CRAWLERS ARE ACTIVE The CRS life cycle starts as crawlers produced by overwintering females from the past season. …
The U.S. Department of Agriculture (USDA) announced an investment of more than $90 million under Section 7721 of the Plant Protection Act to support 441 projects that will: Of the 441 projects, 421 fall under the Plant Pest and Disease Management and Disaster Prevention Program and 20 support the National Clean Plant Network. USDA will reserve approximately $17.2 million to support rapid …
The U.S. Department of Agriculture Animal and Plant Health Inspection Service (APHIS) and the California Department of Food and Agriculture (CDFA) recently expanded the La Mesa Mexican fruit fly (Mexfly) quarantine twice in San Diego County, California. On March 17, APHIS and CDFA expanded the quarantine following the confirmed detections on March 11 of one wild mated female Mexfly and …
By Jawwad A. Qureshi Citrus under protective screen (CUPS) is a novel system for large-scale citrus production in screen houses covered with a tightly woven mesh screen on all four sides and the roof. The primary goal of this shift from a traditional open orchard to a CUPS system is to protect citrus crops from huanglongbing (HLB) disease, which is …
The U.S. Department of Agriculture (USDA) Animal and Plant Health Inspection Service (APHIS) in cooperation with the California Department of Food and Agriculture (CDFA) have expanded the area quarantined for citrus greening in California. APHIS established a new quarantined area in the Ramona area of San Diego County of 93 square miles. The agency also expanded the quarantined area in …
The U.S. Department of Agriculture (USDA) Animal and Plant Health Inspection Service (APHIS) and state agriculture officials recently updated fruit fly quarantines in California and Texas. CALIFORNIA: ORIENTAL FRUIT FLY (OFF) On March 23, APHIS and the California Department of Food and Agriculture (CDFA) removed the OFF quarantine in Riverside and San Bernardino counties, designated the Jurupa Valley quarantine. This …
By Jawwad A. Qureshi Natural enemies are the beneficial organisms that control insect and mite pests. Citrus trees produce most of their young shoots (flush) for the year in spring and will continue to produce more in summer and fall. Arthropod activity has already started in citrus groves. For example, overwintering Asian citrus psyllid (ACP) adults have started reproducing. Other …
Agriculture officials on March 5 established a Mexican fruit fly (Mexfly) quarantine in La Mesa, San Diego County, California, designated the La Mesa quarantine. On March 10 they expanded the quarantine. The U.S. Department of Agriculture Animal and Plant Health Inspection Service (APHIS) and the California Department of Food and Agriculture (CDFA) established the La Mesa quarantine in response to …
Three sapote fruit fly quarantines have been established in Texas by the U.S. Department of Agriculture Animal and Plant Health Inspection Service (APHIS) and the Texas Department of Agriculture (TDA). Altogether, the quarantines encompass approximately 1,102 acres of commercial citrus. On Feb. 23, APHIS and TDA established one quarantine in Rio Hondo and another in Harlingen, Cameron County. They were …
By Lauren Diepenbrock Citrus under protective screen (CUPS) has provided growers with a profitable method for producing fresh fruit in Florida. Growers who have implemented this system have noted quality fruit production and reduced inputs. However, when changes are imposed to the production environment, they are also imposed to the invertebrate pest complex, which can be either beneficial or detrimental …
In a recent virtual presentation, entomologist Jawwad Qureshi discussed monitoring and control measures for citrus pests in trees under individual protective covers (IPCs) and in citrus under protective screen (CUPS). Qureshi is an associate professor at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Southwest Florida Research and Education Center in Immokalee. MONITORING METHODS Qureshi’s noted that …
Florida citrus growers should be on the lookout for an uncommon citrus pest following the recent freeze events that devastated crops throughout the state. During a recent postfreeze webinar hosted by the University of Florida Institute of Food and Agricultural Sciences Citrus Team, Lauren Diepenbrock, associate professor and entomologist, warned growers about the ambrosia beetle. This pest can prey on …
By Lauren M. Diepenbrock Many citrus growers in Florida have been impacted by Bulimulus bonariensis (previously referred to as Bulimulus sporadicus) since the first reports of this pest in groves in 2020. This snail is an ongoing challenge and, with funding from the Citrus Research and Development Foundation, the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) has …
Federal agriculture officials recently established an area quarantined for HLB in, paralleling the intrastate quarantine that the Arizona Department of Agriculture (AZDA) established on Feb. 7, 2025. The quarantined area of approximately 9 square miles is in the Nogales area of Santa Cruz County. The U.S. Department of Agriculture Animal and Plant Health Inspection Service (APHIS) took the recent action …
