projects

Citrus Projects Funded by Plant Protection Act

Daniel CooperPests, Research, USDA

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 …

Mexfly quarantine

California Mexfly Quarantine Expanded

Daniel CooperCalifornia Corner, Pests, Regulation

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 …

CUPS

Pest Avoidance and Monitoring in CUPS

Daniel CooperCUPS, Pests, Tip of the Week

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 …

expanded

California Citrus Greening Quarantine Expanded

Daniel CooperPests, Regulation

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 …

fruit fly

Fruit Fly Quarantine Updates

Daniel CooperPests, Regulation

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 …

enemies

Natural Enemies for Integrated Citrus Pest Management

Daniel CooperPests, Tip of the Week

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 …

Mexfly

Mexfly Quarantine Established and Expanded in California

Daniel CooperCalifornia Corner, Pests, Regulation

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 …

sapote

Sapote Fruit Fly Quarantines Established

Daniel CooperPests, Regulation, Texas

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 …

pest

Pest Management Challenges in CUPS

Daniel CooperCUPS, Pests

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 …

control

Pest Control in Protected Production Systems

Daniel CooperCUPS, IPCs, Pests

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 …

ambrosia

After Freeze, Ambrosia Beetles Are Potential Threat

Daniel Cooperfreeze, Pests

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 …

Snail Management

Planning Spring Snail Management

Tacy CalliesPests, Tip of the Week

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 …

Arizona

Federal HLB Quarantine Established in Arizona

Daniel CooperPests, Regulation

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 …

Mexfly

Another Mexfly Quarantine Established in Texas

Daniel CooperPests, Regulation

Federal and state agriculture officials on Jan. 26 established a Mexican fruit fly (Mexfly) quarantine in Granjeno, Hidalgo County, Texas, designated the Granjeno quarantine. The U.S. Department of Agriculture Animal and Plant Health Inspection Service (APHIS) and the Texas Department of Agriculture (TDA) took the action. APHIS and TDA established the Granjeno quarantine in response to the detection on Jan. …

West Indian fruit fly

West Indian Fruit Fly in Texas Grapefruit Triggers Quarantine

Daniel CooperPests, Regulation, Texas

The U.S. Department of Agriculture Animal and Plant Health Inspection Service (APHIS) on Jan. 16 established a West Indian fruit fly (Anastrepha obliqua) quarantine in Mission, Hidalgo County, Texas. It is designated the Palmview quarantine. This action parallels a quarantine established by the Texas Department of Agriculture (TDA) on Jan. 13. APHIS took the action in response to the confirmed …

Mexfly

More Citrus Acreage Affected by Mexfly Quarantine Expansion

Daniel CooperPests, Regulation, Texas

Agriculture officials on Dec. 30 expanded the Peñitas Mexican fruit fly (Mexfly) quarantine in Hidalgo County, Texas. The U.S. Department of Agriculture Animal and Plant Health Inspection Service (APHIS) and the Texas Department of Agriculture (TDA) took the action. APHIS and TDA expanded the Peñitas quarantine following the Dec. 22 confirmed detection of one Mexfly larva in a tangerine collected …

pest management

Planning Pest Management for Florida Citrus in 2026

Daniel CooperPests, Tip of the Week

By Lauren Diepenbrock Pest management is a year-round challenge in Florida citrus. But with knowledge of insect, mite and snail seasonal biology in relation to tree phenology, plans can be developed to protect fruit and maintain productive citrus trees. Populations of some highly problematic pests (Asian citrus psyllid and citrus leafminer) generally increase with flush/new growth development, so targeting peak …

Mexfly quarantine

Mexfly Quarantines Impact Commercial Citrus in Texas

Daniel CooperPests, Regulation, Texas

The U.S. Department of Agriculture Animal and Plant Health Inspection Service (APHIS) and the Texas Department of Agriculture (TDA) recently established and expanded Mexican fruit fly (Mexfly) quarantine areas in Texas. PEÑITAS QUARANTINE On Dec. 12, the agencies established a Mexfly quarantine in Peñitas, Hidalgo County, designated as the Peñitas quarantine. This quarantine was established in response to the confirmed …

guide

Updated Australian Citrus Guide Available

Daniel CooperDiseases, Pests, Research

The new Citrus Plant Protection Guide 2025-26 from Australia’s New South Wales Department of Primary Industries and Regional Development (NSW DPIRD) is available online. The seventh edition of the guide provides up-to-date information on all aspects of managing pests and diseases in citrus orchards and includes updates on NSW DPIRD projects. Some of the projects are funded by Hort Innovation …

management

Can Physical Barriers Improve Sting Nematode and Root Weevil Management?

Daniel CooperPests

Larry Duncan, professor of nematology with the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS), recently presented his research regarding the management of sting nematodes and diaprepes root weevils. The presentation was part of an ongoing series of Zoom meetings organized by Mongi Zekri, UF//IFAS citrus Extension agent. STING NEMATODE Sting nematode is an important pest, especially in …