HLB Quarantine Area Expanded in California Again

Daniel CooperCalifornia Corner, HLB Management, Regulation

Federal and state officials have expanded the quarantine for huanglongbing (HLB, also known as citrus greening disease) in the Mission Viejo area of California’s Orange County. The U.S. Department of Agriculture Animal and Plant Health Inspection Service (APHIS), in cooperation with the California Department of Food and Agriculture, expanded the quarantine by 13.16 square miles. The expansion was in response …

young trees

Recovering Unprotected HLB-Infected Young Trees

Daniel CooperIPCs, Tip of the Week

By Fernando Alferez and Saoussen Ben Abdallah Individual protective covers (IPCs) are now being increasingly adopted in Florida to protect newly planted citrus trees from psyllid colonization. The risk of new citrus plantings becoming infected with HLB is especially high, as young trees flush more frequently and attract more psyllids. However, the adoption of IPCs does not occur in all …

Polk County

PIECES OF THE PAST: Polk County Roots Run Deep

Daniel CooperPieces of the Past

By Brenda Eubanks Burnette I was honored this year to be part of the Vero Heritage Center and Indian River Citrus Museum’s “Deeply Rooted” event, which was the kick-off for Indian River County’s Centennial Celebration. It made me think of this year’s Florida Citrus Hall of Fame inductees. They all have something in common with deep roots — Polk County! …

bill

Bill to Improve Access to Disaster Assistance Reintroduced

Daniel CooperLegislative

U.S. Rep. Kat Cammack from Florida and colleagues recently reintroduced the bipartisan Fair Access to Agriculture Disaster Programs Act. The act is aimed at removing barriers to agriculture disaster assistance for producers. The bill would provide farmers, ranchers and other agriculture producers with improved access to federal disaster assistance following natural disasters.  Reps. Jimmy Panetta and Zoe Lofgren, both of California, …

sting nematode

Integrated Pest Management Needed for Sting Nematode

Daniel CooperPests

By Maegan Beatty During the recent citrus insect management workshop at the University of Florida Institute of Food and Agricultural Sciences Citrus Research and Education Center, Larry Duncan, a nematology professor, discussed the sting nematode. First recognized in the 1980s as a pest of young citrus trees, the sting nematode has adapted to coarse, sandy soils. The pest feeds at …

HLB-resistant tree

Hope for an HLB-Resistant Tree

Daniel CooperHLB Management

Rick Dantzler, Citrus Research and Development Foundation (CRDF) chief operating officer, believes there is a future for Florida’s citrus industry. His optimistic outlook is based on approaches that researchers have implemented to help growers survive in the short term, such as oxytetracycline (OTC) trunk injection, and work toward the development of an HLB-resistant tree. Dantzler shared that hope during the …

Chinese

Forecast for Chinese Mandarin and Grapefruit Crops

Daniel CooperCrop Forecast, International

A U.S. Department of Agriculture Foreign Agricultural Service (USDA FAS) report forecasts Chinese mandarin and grapefruit production will both increase slightly in 2024–25. TANGERINES/MANDARINS China’s production of tangerines and mandarins is forecast at 27 million metric tons (MMT), up from 26.9 MMT the prior year. Increasing production in multiple cities is expected to outpace the negative effects of citrus greening …

Chilli thrips

Chilli Thrips Management in Florida

Daniel CooperPests

By Maegan Beatty Last month, the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) hosted a citrus insect workshop that covered almost 10 different pests that pose a threat for Florida citrus. Lance Osborne, professor and researcher at the Mid-Florida Research and Education Center, presented research on chilli thrips. Chilli thrips (Scirtothrips dorsalis) can live in over 150 …

weed management

Pre-emergent Herbicides Preferred for Weed Management

Daniel Cooperweeds

It is best for citrus growers to implement a proactive approach to weed management. Being reactive puts producers behind the eight ball with regards to controlling certain weeds in their groves. That’s why Ramdas Kanissery, weed scientist and associate professor at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS), is preaching the importance of pre-emergent herbicides. They …

campaign

‘Zero and 10’ Is Brazil Greening Campaign Motto

Daniel CooperBrazil, HLB Management

“For the incidence to be zero, the control needs to be 10.” That’s the motto of the new Fundecitrus campaign to mitigate the incidence of citrus greening in Brazil. The campaign highlights the need for strict control of the greening-spreading psyllid, especially in new regions where citrus farming is advancing. Those regions include the states of Mato Grosso do Sul, …

psyllid

Now Is the Time to Knock Back Psyllid Populations

Daniel CooperHLB Management, Psyllids

Now is the time for Florida citrus growers to implement management tactics to control the Asian citrus psyllid (ACP), the insect that vectors citrus greening, also known as huanglongbing (HLB). ACPs are currently in low populations across Florida’s citrus-producing region. That means growers should act now to protect their crop from the insect’s impact, says Chris Oswalt, University of Florida …

depression

Oranges Linked to Lower Depression

Daniel CooperResearch

Eating an orange a day may lower a person’s depression risk by 20%, according to a study led by Raaj Mehta, an instructor in medicine at Harvard Medical School. Mehta is also a physician at Massachusetts General Hospital. Mehta said a postdoctoral student he was working with found a 2016 paper pointing to the possibility that citrus lowers the risk …

hlb

Not If Georgia Will Get HLB, But When

Daniel CooperGeorgia

Citrus greening disease, also known as huanglongbing (HLB), is not yet widespread in Georgia. However, there’s no reason to think that it won’t become more of a problem for the state’s citrus growers. Lindy Savelle, executive director of the Georgia Citrus Association (GCA), hopes it doesn’t happen but cautions growers about the disease’s potential beyond Florida. “Something we have to …

mathematical modeling

Mathematical Modeling Is Preparing Europe for HLB

Daniel CooperDiseases, International, Research

A tool predicting how to protect European citrus from HLB shows how mathematical modeling can help prepare for future plant disease invasions. Europe is currently unaffected by HLB. However, there are increased concerns of an infestation since psyllids that spread HLB have been found in key citrus-producing countries, including Portugal and Spain. In response to the HLB threat, a new …

emergency program

Emergency Program Expanded in California for HLB/ACP

Daniel CooperCalifornia Corner, HLB Management, Regulation

The California Department of Food and Agriculture (CDFA) recently announced the expansion in Orange County of an emergency program for HLB and the Asian citrus psyllid (ACP) that spreads the disease. The expansion follows confirmation throughout January of the causative bacterial agent of HLB in plant tissue and/or ACP in Anaheim, Costa Mesa, Garden Grove, Irvine, Mission Viejo, Orange, Santa …

What to Know Before You Go

Morgan ColeFCS24

SHOW ADDRESS The Florida Citrus Show will be held in the parking lot between the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Indian River Research and Education Center (2199 South Rock Road) and the U.S. Department of Agriculture, Agricultural Research Service (USDA-ARS) U.S. Horticultural Research Laboratory (USDA-ARS, 2001 South Rock Road) in Fort Pierce. PARKING Show parking …

disease

Florida Foliar Disease Outlook for 2025

Daniel CooperDiseases

By Megan Dewdney As I write this article in January 2025, the world is a chilly place, and it is hard to imagine warm and wet weather in Florida. The predicted weather pattern from now until flowering is moving from La Niña toward neutral. This is predicted to bring above-average spring temperatures with reduced rainfall. This is a hopeful sign …

Agroview

The Growth of AI-Based Agroview

Daniel CooperTechnology

A few weeks after Yiannis Ampatzidis started working at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) in 2017, Hurricane Irma wreaked havoc on Florida citrus groves. Growers needed to count their trees with precision to get crop insurance, but it was a laborious, time-intensive task. Ampatzidis, associate professor of agricultural and biological engineering at the Southwest …

Arizona

HLB Confirmed in Arizona for First Time

Daniel CooperDiseases, Regulation

HLB was recently confirmed for the first time in Arizona, first in an Asian citrus psyllid (ACP) and then in another ACP and citrus plant tissue. The Arizona Department of Agriculture (AZDA) reported the details. On Dec. 16, 2024, agriculture inspectors collected ACP and plant tissue samples from a residential citrus tree in Nogales. The collections were made during a …