Uncovering the Cause of Greasy-Green on Grapefruit 

Josh McGillGrapefruit, Tip of the Week

By Megan Dewdney, Mark A. Ritenour and Liliana M. Cano  In the last few years, 89% of Florida grapefruit growers have struggled with a disorder that they refer to as greasy-green, leading to losses between $20,000 to $1.7 million per year. The disorder causes the fruit to have large, diffuse green patches on the rind after degreening, making it no …

Savelle

UGA to Hire Citrus Researchers Next Year

Josh McGillGeorgia, Research

Georgia citrus growers will soon have research support from the University of Georgia (UGA), says Lindy Savelle, president of the Georgia Citrus Association and member of the Georgia Citrus Commission. She confirmed the news at the recent Cold Hardy Citrus Field Day at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) North Florida Research and Education Center …

All In With Trunk Injection

Josh McGillHLB Management, planting

Some Florida citrus growers decided to start slowly with trunk injection of oxytetracycline (OTC), treating only a small portion of their acreage. Others took a wait-and-see approach, hoping to learn from their peers’ experiences. But Wheeler Farms went all in, treating 100% of their trees with trunk injection. “What we were doing was not working, so we needed to try …

citrus forecast

FFVA Endorses Glyphosate Renewal in Europe

Josh McGillInternational, Pesticides, Regulation

Florida Fruit & Vegetable Association (FFVA) recently submitted comments to the U.S. Department of Agriculture’s Foreign Agricultural Service endorsing the European Union’s (EU) 10-year registration renewal efforts for glyphosate. In the letter, FFVA stressed that glyphosate herbicide has been used safely and successfully in Europe for more than 40 years. It noted that leading health regulators, including in Europe, the …

acp

Conclusions on Asian Citrus Psyllid Control

Josh McGillHLB Management, Pests

HLB, spread by the Asian citrus psyllid (ACP), has been the scariest and most destructive disease that Florida citrus growers have ever faced. So, it was fitting that entomologist Jawwad Qureshi made a virtual presentation about ACP/HLB on Halloween, often considered the scariest day of the year. Qureshi, a University of Florida Institute of Food and Agricultural Sciences associate professor, …

Field Day Showcases Efforts to Breed HLB-Tolerant Oranges

Josh McGillBreeding, Events

By Maegan Beatty On Oct. 27, Jose Chaparro hosted a citrus breeding research update at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Teaching Orchard in Gainesville. The event included a variety display and field tour. Chaparro, a UF/IFAS associate professor of horticultural sciences, focused on how he and his team are taking on the significant task …

How to Properly Transport and Store Pesticides

Josh McGillCEU

By Lourdes C. Pérez Cordero Editor’s note: This article grants one continuing education unit (CEU) in the Core category toward the renewal of a Florida Department of Agriculture and Consumer Services restricted-use pesticide license when the accompanying test is submitted and approved. Pesticides can often pose a threat to the health and safety of people, wildlife and the environment if …

Cold-Hardy Citrus Growers Gather for Field Day

Josh McGillCold Hardy, Events

Production in the cold-hardy citrus region was under the spotlight during a recent field day in Quincy, Florida. Growers and industry leaders visited the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) North Florida Research and Education Center (NFREC) to learn about various facets of citrus production. Topics like controlled-release fertilizers, crop diversification and implementation of artificial intelligence …

Brassinosteroids Can Improve Juice Quality and Fruit Yield

Josh McGillTip of the Week

By Fernando Alferez and Divya Aryal There are some indications that brassinosteroids (Brs) may advance commercial internal maturity by almost one month in Valencia sweet orange, depending on the time of application. However, the best time of application in this variety and other sweet orange varieties like Hamlin still needs to be determined, so that this treatment can become economically …

otc

Fine-Tuning Trunk Injection

Josh McGillHLB Management

Growers have concluded their first round of injecting their citrus trees with oxytetracycline (OTC) and now are anxiously awaiting the results. So far, trees seem to be responding with larger leaves and fruit, but fruit retention will tell the story if the treatment is moving the needle against HLB. For many years, there was a perception among growers that if …

Millennium Block Varieties Tour

Josh McGillEvents, Rootstocks, Varieties

Citrus growers are invited to tour the 20-acre Millennium Block at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Indian River Research and Education Center (IRREC) in Fort Pierce on Nov. 7. The tour will be held from 9 a.m. to 2 p.m.  New varieties in the grove are in their fourth year of growth. Researchers are …

$5 Million Awarded to UF/IFAS for HLB Research

Josh McGillHLB Management, Research

The University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) has been awarded five federal grants totaling more than $5 million to control HLB. The grants are from the U.S. Department of Agriculture’s National Institute of Food and Agriculture (NIFA).   HLB is caused by the bacterium Candidatus Liberibacter asiaticus (CLas). The Asian citrus psyllid can transmit CLas into a …

Citrus State of the Industry Survey

There’s a lot going on in Florida citrus. New trunk-injection therapies have been approved to treat HLB as groves bounce back from last year’s hurricanes.  It’s a good time to get a sense of the mood of growers as we start the new season. If you are a grower or a consultant/caretaker (who can answer generally on behalf of your …

São Paulo Governor Creates Greening Committee

Josh McGillBrazil, Citrus Greening, HLB Management

The governor of Brazil’s state of São Paulo, Tarcísio de Freitas, on Oct. 16 decreed the formation of a state committee for greening contingency after meeting with several members of the state’s citrus industry. Greening affects 38.06% of orange trees in the states of São Paulo and Minas Gerais. The governor acted after considerations by the Sylvio Moreira Citriculture Center/Agronomic …

How Much Yield Is Needed to Offset the Cost of Injecting Trees With Oxytetracycline?

Josh McGillEconomics, HLB Management

By Ariel Singerman Citrus growers in Florida are now allowed to inject their trees with oxytetracycline (OTC) to try to control Candidatus Liberibacter asiaticus and/or suppress citrus greening. The use of OTC is expected to improve the trees’ health and, in turn, increase yield. In this article, cost estimates are used to address the question of what yield response is …

Sneak Peek: November 2023 Citrus Industry

Josh McGillSneak Peek

As the new citrus season gets underway in Florida, growers are hopeful for an improved harvest. The initial U.S. Department of Agriculture forecast for 2023–24 calls for a 30% increase in the state’s orange crop. The November issue of Citrus Industry magazine has details on the forecast and other good news for growers. In the issue’s cover story, Wheeler Farms …

Improve Fruit Yields and Juice Quality

Josh McGillNutrition, Pest Management, Tip of the Week

By Davie Kadyampakeni and Megan Dewdney The University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) conducted a six-year project to determine if plant nutritional fertilizer sources coupled with specific crop protection chemicals help mitigate citrus diseases. This project was conducted on a 5-acre commercial citrus grove block near the Citrus Research and Education Center (CREC) in Lake Alfred. …

citrus

All In For Citrus Podcast, October 2023

Josh McGillAll In For Citrus Podcast, Breeding

Many people believe genetics will be the eventual key that unlocks more permanent solutions to HLB. Whether it be traditional breeding or new technologies, one day there could be a citrus tree that is resistant or tolerant enough to make the disease a non-factor. One such key could be CRISPR technology to deliver a tree that is engineered to resist …