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News for citrus growers around the globe
The European Union (EU) lemon crop for 2021–22 is expected to decline from the previous season while its grapefruit crop is projected to rise. LEMONEU lemon production is forecast at 1.5 million metric tons (MMT), down from the 1.7 MMT estimated for the previous season. Spain is the EU’s largest lemon producer and accounts for nearly 65% of EU production. …
A bacterial species closely related to citrus greening disease is rapidly evolving its ability to infect insect hosts and possibly plants. The newly identified species belongs to Liberibacter, a family of bacteria known to infect several economically important crops. There are nine known Liberibacter species, including three that are associated with citrus greening. Citrus greening, also known as huanglongbing or …
By Manjul Dutt The finger lime is an HLB-tolerant Australian native citrus that has been gaining popularity and importance in the last few years. Finger lime has several unique fruit qualities that set it apart from conventional sweet oranges and mandarins. The primary characteristic of this fruit is the round to teardrop-shaped juice vesicles, known as “citrus caviar,” that burst …
The 2022 Florida Citrus Hall of Fame induction ceremonies will be held Friday, Oct. 14 from 11:30 a.m. to 1:30 p.m. at Florida Southern College’s (FSC) George W. Jenkins Fieldhouse. The college is at 111 Lake Hollingsworth Drive in Lakeland. The event is sponsored by Florida Citrus Mutual, the Florida Department of Citrus and the Florida Citrus Hall of Fame, …
Trunk injection of oxytetracycline (OTC) has been proposed as a means to manage HLB in citrus. University of Florida research shows OTC injections increase yield and fruit quality but cause tree injury. TJ BioTech expects to receive EPA registration in late fall of this year for an OTC product that could be injected into trees. Florida citrus industry growers and …
By Bryony C. Bonning and Lukasz L. Stelinski Asian citrus psyllids (ACP) transfer the pathogen that causes citrus greening from plant to plant as they feed. After confirmation of citrus greening in Florida in 2005, growers intensified their use of insecticides against ACP to try to stop disease spread. However, this method alone has yielded variable success and increased costs. …
A little more than 20 inches of rain has fallen on Dale Murden’s Texas grapefruit grove in 2022 — “about average for the year,” he says. But the majority of Texas is in severe drought, and that poses problems for Murden and other Texas growers, especially for the future. “We just are not seeing any rain or significant inflows in …
University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) specialists are alerting Georgia citrus growers about an invasive pest that’s impacting Florida’s crop. Lebbeck mealybugs have yet to navigate their way to Georgia. But it is only a matter of time, says Lauren Diepenbrock, UF/IFAS assistant professor and entomologist. “It’ll get up to Georgia probably. We’re doing our best …
Gov. Ron DeSantis on Aug. 5 announced the reappointment of the nine members of the Florida Citrus Commission. They are: CHRISTOPHER GROOMGroom is chief operating officer of Florida’s Natural Growers. He serves as vice president and treasurer of Florida’s Natural Growers Foundation. Groom earned his bachelor’s degree in economics and Hispanic studies from Northwestern University and his master’s degree in …
In the quest for better fruit retention in HLB-infected citrus, there has been a good deal of attention placed on the use of plant growth regulators to fight fruit drop. Gibberellic acid (GA) has been the focus of new research in recent years to establish refined timing of applications to optimize results in Florida citrus. Much of that research has …
By Thomas H. Spreen As many of you know, I have been part-owner of a small citrus grove company in Florida. My long-time partner was Bob Behr, CEO of Florida’s Natural. He was a student in the first class I taught at the University of Florida in the spring of 1977. He and I made our first grove purchase in …
On Aug. 4, the National Oceanic and Atmospheric Administration (NOAA) slightly decreased the likelihood of an above-normal Atlantic hurricane season to 60%. That is down from 65% in the initial NOAA outlook issued in May. The likelihood of near-normal activity has risen to 30% from 25% in May, and the chances remain at 10% for a below-normal season. NOAA’s update …
European Union (EU) mandarin production in 2021–22 is forecast at 3.16 million metric tons (MMT), a 2.3% decrease from the previous year, the U.S. Department of Agriculture’s Foreign Agricultural Service (FAS) recently reported. Spain will be the largest EU producer of mandarins in 2021–22 at 2.1 MMT, down from 2.3 MMT the prior year. Italy’s expected mandarin production of 832,300 …
The San Joaquin Valley ACP (Asian citrus psyllid)/HLB Area-Wide Task Force in California is recommending growers participate in a coordinated treatment application in commercial citrus orchards. This recommendation is for orchards located east and south of Bakersfield and includes young, non-bearing trees. The recommendation comes as a result of higher than normal HLB-spreading ACP finds in traps earlier this summer. …
By Michael Rogers As we approach a new citrus-growing season, the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researchers and Extension agents working throughout the state renew their focus on finding solutions that growers can use in the short term to sustain their operations. While we value our longer-term research projects, efforts that provide tangible applications that …
On Aug. 4, Colorado State University (CSU) decreased its hurricane forecast for Atlantic seasonal activity and landfall strike probability for 2022. But citrus growers and other agriculturists shouldn’t relax their guard because the CSU Department of Atmospheric Science continues to call for an above-average Atlantic hurricane season. NEW PROJECTIONSCSU now forecasts the Atlantic will have 18 named storms in 2022, …
By Amir Rezazadeh Saline soil and water damage many citrus groves in Florida. In general, when the dissolved salt concentration in soil or water increases, it is referred to as “saline” soil or water. But how much increase in salt concentration makes soil or water saline? Citrus plants’ major reactions to excessive salt in the soil or water are reduced …
The recent Citrus Growers’ Summer Update in Valdosta, Georgia, provided growers another outlet to learn about two diseases — citrus greening and citrus canker — that could have serious ramifications on the industry’s future in Georgia. Jonathan Oliver, University of Georgia (UGA) assistant professor and small fruits pathologist, highlighted the seriousness of the discovery of both of the diseases in …
By Tripti Vashisth and Mary Sutton Citrus trees affected by huanglongbing (HLB) consistently have small fruit and low fruit numbers at harvest. The low fruit numbers are largely attributed to the increased rates of preharvest fruit drop that accompany HLB. Small fruit is more likely to drop during this preharvest period, suggesting a link between fruit size and retention. To …
The first detection of citrus yellow vein clearing virus (CYVCV) has been made in Tulare, California. The disease was detected during the California Department of Food and Agriculture’s (CDFA) routine multi-pest survey. The U.S. Department of Agriculture’s Animal and Plant Health Inspection Service (APHIS) has confirmed positive identifications of the disease. CDFA is surveying for the disease in Tulare County …
