Pest Management Under Bags

Ernie NeffCitrus Expo, Pests

Many Florida citrus growers in recent years have used individual protective covers (IPCs), often referred to as “bags,” for pest management, especially to protect young trees from HLB-spreading Asian citrus psyllids. Lauren Diepenbrock addressed the benefits and challenges of IPCs at this year’s virtual Citrus Expo. Diepenbrock is an assistant professor of entomology at the University of Florida Institute of …

AI Will Be Another Tool for Citrus Greening

Ernie NeffAll In For Citrus Podcast

Artificial intelligence (AI) will likely help growers and researchers cope with citrus greening (huanglongbing, known as HLB) and other citrus problems over the long run. That’s the belief of J. Scott Angle, the new head of the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS). Angle, UF’s vice president for agriculture and natural resources, says AI is a …

craft

CRAFT Cycle Two Deadline Is September 4

Tacy Calliesplanting, Research

Time is running out for commercial citrus growers in Florida to apply to participate in Cycle Two of the Citrus Research and Field Trial (CRAFT) program. The deadline to apply is Friday, Sept. 4. The application process is open to growers with a minimum of 20 acres of planned solid-set or reset plantings. Cycle Two of CRAFT covers up to …

Sneak Peek: September 2020 Citrus Industry

Tacy CalliesSneak Peek

In just two days, more than 1,100 Citrus Expo participants viewed 28 educational videos. If you didn’t get a chance to visit the virtual Citrus, Vegetable & Specialty Crop Expo on Aug. 19–20, you can find highlights from the event in the September issue of Citrus Industry magazine. The educational videos will remain on the Citrus Expo website through the …

Root Architecture, Propagation Method and Citrus Tree Growth

Tacy CalliesRoot health

By Ute Albrecht, Sameer Pokhrel and Kim D. Bowman The rootstock has received increased attention as a management strategy to alleviate the devastating effects of HLB. In commercial citrus nursery production, rootstocks are typically propagated by seed. This is possible because citrus produces polyembryonic seeds with nucellar embryos, which develop into plants that are genetically identical to the mother plant. …

HLB

New UF/IFAS Plant Breeding Website

Ernie NeffBreeding

Fred Gmitter, a University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) professor of breeding and genetics, has released several mandarin citrus varieties. Most recently, he released the Marathon variety in 2018. The citrus fruit’s ability to hang onto the tree for an extended period led researchers to give it the Marathon moniker. Gmitter is one of numerous scientists …

Mutual Testifies on OJ From Mexico

Ernie NeffMexico

Florida Citrus Mutual Executive Vice President and CEO Mike Sparks recently testified to federal officials regarding the effects of orange juice (OJ) imports from Mexico. His testimony to the United States Trade Representative (USTR), the U.S. Department of Commerce (USDOC) and the U.S. Department of Agriculture (USDA) was part of a larger hearing on trade with Mexico and the U.S. …

Infected ACP Found in California Commercial Grove Is No Surprise

Len WilcoxCalifornia Corner, Psyllids

For the first time, an Asian citrus psyllid (ACP) carrying the bacteria which causes huanglongbing (HLB) was found in a commercial grove in Riverside County. While the discovery has prompted concern, University of California Riverside Extension Specialist Monique Rivera said that the find has been expected and is not all that surprising. “We’ve had positive trees removed here in Riverside, …

Weird Trunk Disorders in Groves

Ernie NeffCitrus Expo

Florida growers, Extension agents and others have been baffled by unusual trunk symptoms during what Evan Johnson termed “the year of the weird trunk disorder.” Growers spotted the disorders, which were similar to phytophthora, in groves over the past one and half to two years. Johnson addressed three of the disorders, which have been found in multiple counties. Johnson, a …

florida

Area-Wide Pest Management of Florida Citrus

Tacy CalliesHLB Management

Ariel Singerman, University of Florida assistant professor, made an online presentation during the recent Agricultural and Applied Economics Association annual meeting. He shared his research on the implementation of area-wide pest management throughout the state of Florida. “Diminishment of pest populations by farmers on their own farm is the most widely used strategy for pest control. However, this is compromised …

Cover Crops and Nematicides for Sting Nematode Management

Tacy CalliesPests

By Larry Duncan, Johan Desaeger and Sheng-Yen Wu The citrus row middle habitat changed profoundly beginning in the 1970s as mowing replaced disking for weed management. This change ended the costly cycle of cutting and regrowing citrus roots near the soil surface and reduced soil erosion, among other benefits. Mowing also allowed a seasonal succession of native plants to flourish, …

Citrus Researcher Earns National Award

Tacy CalliesAwards, Industry News Release

Researcher. Scholar. Change agent. Nian Wang, a professor at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS), has been recognized for all of these roles with an award from the American Phytopathological Society (APS) at its 2020 annual meeting. Wang received the Ruth Allen award, which honors people who have made an outstanding, innovative research contribution that has …

Citrus Disease: What to Watch for in Georgia

Tacy CalliesDiseases

The citrus greening disease (huanglongbing or HLB) that has devastated Florida’s citrus industry over the past decade has not affected Georgia commercial production. However, growers should still be aware of the potential danger it can bring. According to Jonathan Oliver, fruit pathologist and Extension specialist in the Department of Plant Pathology at the University of Georgia (UGA), all confirmed HLB-positive …

California Citrus Movement Rules Amended

Len WilcoxCalifornia Corner, Regulation

The Citrus Pest & Disease Prevention Program, an agency of the California Department of Food and Agriculture (CDFA), has revised the rules governing shipment of citrus within the state. The rules are in place to protect commercial citrus groves from the threat of huanglongbing (HLB) disease. Effective July 31, 2020, bulk citrus fruit may be shipped directly to a packinghouse …

Made in the Shade

Tacy CalliesCitrus, Production

Feral citrus growing in natural hammocks reveals insights about production and HLB. By Christopher Vincent and Anirban Guha Would you rather go outside in August and stand for a few hours in the sun or in the shade? It turns out citrus prefers the shade, too. In the past two years, we have been researching the health of citrus growing …

psyllids

IPM Approaches to Reduce Psyllid Populations

Tacy CalliesCitrus, Psyllids

Lukasz Stelinski recently shared integrated pest management strategies for reducing Asian citrus psyllid (ACP) populations to optimize tree health and yield. The University of Florida Institute of Food and Agricultural Sciences professor of entomology and nematology presented the information during the 2020 virtual Florida Citrus Industry Annual Conference. Even with approximately 100 percent of Florida citrus trees infected with huanglongbing …

World Orange Production to Fall

Ernie NeffCrop Forecast

Global orange production for 2019-20 is estimated to fall 7.8 million metric tons (MMT) from the previous year to 46.1 MMT, according to a July report by the U.S. Department of Agriculture’s Foreign Agricultural Service. Consumption is forecast to be flat, though not down. Global trade is expected to be lower with an anticipated drop in exports from Brazil and …

First CLas-Positive ACP Found in California Grove

Len WilcoxCalifornia Corner, Industry News Release, Psyllids

An Asian citrus psyllid (ACP) sample has been confirmed positive for Candidatus Liberibacter asiaticus (CLas), the bacteria that causes huanglongbing (HLB). The sample was collected from a commercial citrus grove in the Woodcrest area of Riverside County. Confirmed by Citrus Research Board’s Jerry Dimitman Laboratory, this single adult psyllid is the first CLas-positive ACP found in a commercial citrus grove …

Mexfly Quarantine Reduced in Texas

Ernie NeffPests

The U.S. Department of Agriculture’s Animal and Plant Health Inspection Service (APHIS) and the Texas Department of Agriculture (TDA) in late July removed the Mexican fruit fly (Mexfly) quarantine area in Lasara, Texas. Lasara is in Willacy County. The quarantine in Lasara had been established in January. The agencies had restricted interstate movement of regulated articles from the area to …

The Future Faces of Florida Citrus

Tacy CalliesScholarship

Meet the four students who received the FMC Citrus Ag Production Scholarships. By Tacy Callies The FMC Citrus Ag Production Scholarships (CAPS) program, a partnership between AgNet Media and FMC, was created to support Florida citrus production and encourage interested youth to pursue careers in citrus. Two University of Florida students and two Florida Southern College students each were awarded …