Potassium and Silicon Improve Cold Hardiness

Tacy CalliesCold Hardy, Tip of the Week

By Muhammad Shahid Winter freeze is the main threat to the emerging citrus industry in North Florida, South Georgia and Southeast Alabama. Growers use microsprinkler irrigation as a freeze-protection strategy to protect the graft union of young trees, but it is not very effective in protecting aboveground plant parts in established trees. PLANT PROTECTIONUse of stress-mitigating substances could be an …

frost season

Frost Season Arrives in California

Daniel CooperCalifornia Corner, Weather

California Citrus Mutual (CCM) recently reported that the 2023 frost season is underway for the state’s San Joaquin Valley citrus growers. “That means growers will be closely monitoring weather forecasts to prepare for any cold spells that may sweep through the valley in the coming months,” the citrus growers’ trade association stated.  Although long periods of below-freezing temperatures are of …

winter

Prepare Now for the Winter Season

Daniel Cooperfreeze

By Maegan Beatty As the cooler months start to arrive, it is important to protect citrus trees from overnight freezes and extreme weather conditions. Last December, the All In For Citrus podcast addressed what cold protection should look like for Florida citrus growers in an interview with Chris Oswalt, University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) citrus …

planning

Planning Pointers for Cold-Hardy Citrus Production

Daniel CooperCold Hardy, Production

Crop planning is an essential part of the citrus production process. What are you going to grow? Where are you going to market? How are you going to overcome HLB (huanglongbing or citrus greening)? John Chater, assistant professor at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Citrus Research and Education Center, discussed the different factors that …

georgia

Season’s Expectations for Cold-Hardy Citrus

Josh McGillCold Hardy, Production

High quality and low quantity are in store for this year’s cold-hardy citrus crop in eastern Alabama, southern Georgia and the Florida Panhandle. Too many natural disasters negated the volume of this year’s crop load, according to Lindy Savelle, president of the Georgia Citrus Association and member of the Georgia Citrus Commission. “We had a freeze, and then we had …

Citrus Thrips Reduce California Production

Josh McGillCalifornia Corner, Pests

California citrus growers faced significant citrus thrips challenges this season due to the unprecedented rainfall, California Citrus Mutual (CCM) reported. The unusual weather pattern led to uncontrollable conditions in the field.  Reports from the CCM Pest and Disease Task Force indicated that some growers have experienced exterior fruit scarring on as much as 80% of the fruit in individual blocks. …

Diseases Without Borders: Leprosis and Yellow Vein Clearing Viruses

Josh McGillDiseases

By Ozgur Batuman Plant virus diseases are unusually difficult to manage if introduced into new production sites. Citrus-infecting viruses, particularly those spread by insect vectors, are no exception to this. Florida is regularly challenged by a barrage of invasive pests and pathogen species that could devastate the citrus industry. Viruses causing citrus leprosis and citrus yellow vein clearing diseases are …

Postharvest Ethylene Applications for Color Change

Josh McGillGeorgia, Production

A citrus fruit’s color can provide the appearance that it is not ready to be harvested. But internally, it could be ready to eat. To help convince consumers of the citrus crop’s readiness, Angelos Deltsidis, University of Georgia assistant professor and postharvest Extension specialist, is researching the use of ethylene to artificially degreen citrus after harvest. “Naturally, citrus changes color …

USDA Funds Three Georgia Citrus Projects

Josh McGillGeorgia, Research

The U.S. Department of Agriculture Agricultural Marketing Service (USDA AMS) funded three citrus projects in Georgia for fiscal year 2023. SATSUMA EDUCATIONThe Georgia Department of Agriculture (GDA) received $103,225 for a satsuma education project. GDA will partner with local farmers and produce distributors to increase the availability of Georgia-grown satsuma mandarins in retail locations. The project will work closely with …

UGA Citrus Research Benefits From Freeze

Josh McGillCold Hardy, freeze, Varieties

Research in South Georgia cold-hardy citrus requires freezing temperatures for studies to be effective. When temperatures dropped below freezing for multiple days around Christmas last year, it allowed Jake Price, University of Georgia (UGA) Lowndes County Extension coordinator, to conduct extensive research into various citrus varieties and rootstocks. He discussed his research during a citrus meeting in early August. “We’ve …

Changing Weather Patterns for Georgia Groves

Josh McGillWeather

Pam Knox told Georgia growers at an August citrus meeting that their groves experience warmer temperatures on average than they would have six decades ago. “Since about 1960, annual temperature (in Georgia) has risen about 2.5 degrees Fahrenheit,” she said. Knox is the University of Georgia (UGA) Weather Network director and agricultural climatologist. According to Knox, the growing season increases …

Georgia Citrus Meeting Informs and Updates Growers

Josh McGillGeorgia

Meetings have become an integral part of the production process for Georgia citrus growers. The University of Georgia’s (UGA) most recent meeting allowed producers to hear from scientists about research pertaining to a growing industry in the region. Topics like changing weather patterns, rootstock research, HLB and the use of ethylene to degreen satsuma mandarins were presented during an Aug. …

Turkish Tangerines Rebound From Natural Disasters

Josh McGillCrop Forecast, International, Mandarins

Turkish production of mandarins/tangerines is forecast at 1.86 million metric tons (MMT) for 2022–23, up slightly from the previous season, the U.S. Department of Agriculture Foreign Agricultural Service (USDA FAS) reported. Prior season (2021–22) mandarin production was 1.81 MMT. Mandarins were less impacted than other Turkish citrus by freezing temperatures during blossoming in March 2022, USDA FAS stated. Also, the …

Fruit Quality Evaluations for Georgia Citrus Varieties

Josh McGillGeorgia, Varieties

Characteristics of 30 varieties and 45 variety/rootstock combinations were reported in Evaluating Fruit Quality of Citrus Varieties in Georgia, 2021-22. Jacob Price, county Extension coordinator for Lowndes County and Extension citrus specialist with University of Georgia (UGA) Extension, authored the report. Price noted that most groves in Georgia were planted after 2014. Initially, satsuma mandarins (Citrus unshiu) on trifoliate rootstocks …

Update on Georgia Citrus Acres

Josh McGillAcreage, Georgia

University of Georgia citrus Extension agent Jake Price recently estimated Georgia has reached a record-high of 570,760 citrus trees planted on 3,936 acres. Each year, Price estimates the number of citrus trees planted in Georgia. Calculating 2023 numbers has been a little different because of tree losses due to the December 2022 freeze. Of the 567 new acres of trees …

Silicon Recommendations for Citrus

Josh McGillCold Hardy, Nutrition

A University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researcher recently wrote an article about silicon that included recommendations for its use. The article by Muhmmad Shahid, assistant professor of horticulture, appeared in the UF/IFAS Cold Hardy Citrus Connection newsletter. Silicon’s benefits may include improved yield, a strengthened root system and tolerance to abiotic stress, including cold. Excerpts …

Peruvian Mandarin/Tangerine Production to Dip

Josh McGillCrop Forecast, International

The U.S. Department of Agriculture Foreign Agricultural Service (USDA FAS) recently forecast Peruvian mandarin/tangerine production in 2022–23 at 550,000 metric tons (MT), slightly lower than the previous year’s 570,000 MT. The decrease can be attributed to removal of low-yield trees, a delayed season, lower harvests of early-season varieties and a warmer than expected fall season. ACREAGEPeru’s mandarin/tangerine planted area is …

Members Appointed to Georgia Citrus Commission

Josh McGillGeorgia

Georgia’s newly established Agricultural Commodity Commission for Citrus Fruits, known as the Georgia Citrus Commission, has its five members that are tasked with steering the course of the state’s citrus industry. The Commodity Commission Ex Officio Committee appointed the following members to the Georgia Citrus Commission: Each commission member has a minimum of 5 acres of citrus trees. Members will …

Georgia Citrus Development Act Introduced

Josh McGillGeorgia, Legislative

U.S. Sen. Jon Ossoff is leading the charge to support Georgia’s farmers and strengthen the state’s growing citrus industry. He introduced the Georgia Citrus Development Act of 2023to ensure Georgia citrus growers are represented when guiding key decisions for the industry. Sen. Ossoff’s bill would add a new Georgia member to the Citrus Disease Subcommittee (CDS), a national policy council …

Update on the Cold-Hardy Citrus Region

Josh McGillCold Hardy

By Danielle Sprague Williams In North Florida and South Georgia, there has been a significant growth in citrus production due to the relatively mild winters, advances in freeze protection and cold-hardy citrus varieties. In addition to this, there is a relatively low incidence of the citrus greening pathogen and its vector, the Asian citrus psyllid. Due to these factors, many …