By Lukasz L. Stelinskiand Jawwad A. Qureshi Asian citrus psyllids (ACP) are at the mercy of their host (citrus) for survival. They need flush to lay eggs and for the nymphs to develop. Prior to HLB, the majority of flushing had been fairly predictable and occurred in the early spring and late summer. The occurrence of flush in young trees …
Florida Citrus Labor Contractors Penalized
The U.S. Department of Labor (DOL) reported that three Arcadia citrus labor contractors failed to comply with the federal H-2A agricultural worker visa program, shortchanging employees $72,609 in total wages. The DOL’s Wage and Hour Division found that Benjamin M. Ramirez Harvesting Inc., AO Harvesting LLC and Gustavo Cisneros Harvesting Inc. failed to provide H-2A employees with at least three-quarters …
Why She Grows Citrus in Georgia
When Lindy Savelle ended her career in federal law enforcement, including stints overseas, she and her husband decided to move back to land they owned in South Georgia. They researched different crops they might grow and settled on citrus. She tells her story in a recent Grower Talks Podcast produced by the Georgia Fruit and Vegetable Growers Association. “Citrus is …
HLB Strategies From Zoom’okalee
In a Jan. 12 virtual Zoom seminar from Immokalee (dubbed “Zoom’okalee” in the presentation), researcher Ozgur Batuman reviewed old and new approaches to controlling HLB. The seminar was titled “Citrus Disease Trends We Should Heed: HLB, Phytophthora and Leprosis.” Batuman works for the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Southwest Florida Research and Education Center (SWFREC) …
Morocco: Big Jump in Citrus Production Expected
The U.S. Department of Agriculture’s Foreign Agricultural Service (FAS) expects total citrus production in Morocco to reach an estimated 2.55 million metric tons (MMT) in 2021-22. That’s an increase of 12% over 2020-21. Tangerine/mandarin production should increase by 13% over the previous year to 1.36 MMT. Domestic consumption is expected to be 860,000 metric tons (MT), an increase of 16%. …
Coordinated HLB Treatment Critical in California
In an open letter to California citrus growers, Jim Gorden, chair of the Citrus Pest & Disease Prevention Committee, emphasized the importance of cooperation of all growers to keep huanglongbing (HLB) at bay. Growers need to work together to coordinate treatments for maximum effectiveness. “As the threat of HLB continues, industry members know that the best way to prevent HLB …
Florida Orange Brix Levels Not So Sweet Yet
Florida citrus growers and orange juice processors are reporting low Brix levels as the 2021–2022 harvest season continues. The Jan. 10 edition of the Market News Bulletin from Florida Citrus Mutual noted average Brix of 9.83. According to Bob Behr, chief executive officer of Florida’s Natural Growers, juice oranges being harvested now are running below average. “Citrus greening continues to …
Florida Citrus Nutrition Recommendations to Be Updated
The Southeast Regional Fruit and Vegetable Conference held in Savannah in early January included a session on citrus production to educate growers. Kelly Morgan, professor of soil fertility and water management with the University of Florida, spoke to attendees about newly updated production guides and their relationship to plant nutrition and HLB. Morgan noted that the third edition of the …
Paraquat Alternatives for Citrus Weed Control
By Ramdas Kanissery Paraquat is an herbicide labeled for various crops, including citrus, for post-emergent weed control. When applied during the early growth stage, paraquat controls many annual grasses and broadleaf weeds commonly found in Florida citrus. Additionally, paraquat typically offers relatively good crop safety in citrus due to its lack of translocation in the plant. This makes it the …
Developing a Management Plan for Lebbeck Mealybug
By Lauren Diepenbrock Managing lebbeck mealybug has become an ongoing challenge in many citrus-growing areas of Florida. This pest expanded into 14 counties from 2019 to fall of 2021 and impacts both commercial and residential citrus. Damage includes distorted fruit and leaves, stem dieback and fruit drop. Loss of young trees can occur under extreme infestation scenarios. In addition to …
Smart Technology Cuts Spray Costs
As they battle HLB, growers must control costs wherever possible, including by applying pesticides and fertilizer more efficiently. With that in mind, Yiannis Ampatzidis is engaging artificial intelligence (AI) to develop a low-cost, smart tree-crop sprayer that can automatically detect citrus trees, calculate their height and leaf density, and count fruit. That way, growers target their spray more efficiently, so …
Egypt to Remain Top Orange Exporter
Egypt is expected to maintain its position as the world’s leading fresh orange exporter in 2021–22 despite production challenges, the U.S. Department of Agriculture’s Foreign Agricultural Service (FAS) reported. The country is expected to export 1.45 million metric tons (MMT), down from 1.67 MMT in 2020–21. The decrease in exports is attributed to lower production amid unfavorable climate conditions. Russia, …
How Fast is CLas? Scientists Now Know
For the first time, scientists have been able to measure the speed of the Candidatus Liberibacter asiaticus (CLas) bacteria that causes HLB disease. CLas are injected into citrus trees by psyllids feeding on the trees’ sap. CLas relies on this sap to grow and spread throughout trees. Using a new statistical modeling analysis and measurement approach, plant pathologists were …
Freeze Damage: Preparation and Recovery
By Amir Rezazadeh Low temperatures can cause serious injury to leaf, wood and fruits of citrus trees. An extended freeze can kill a citrus tree. A rapid temperature decrease or a longer duration of freezing temperature can worsen the damage. Because preparation is paramount in protecting citrus trees, growers should use the Florida Automated Weather Network. The network provides information …
Pest Management: A New Approach to an Age-Old Challenge
By Brad Turner From a family with deep Florida roots, I have over 40 years of experience in commercial citrus production. I learned the industry from the ground up by working in the family groves while studying citrus production at Florida Southern College. I have owned a citrus nursery, my own groves and a citrus caretaking business. I have also …
Making Sense of Biologicals: An Alternative to Managing Premature Fruit Drop
One instance of fruit drop is expected and needed every growing season for Florida citrus producers. A second instance, however, is unexpected, unwanted and just what growers do not need right before harvest time. HLB WORSENS DROPBut that is a scenario Florida citrus growers encounter every year. This problem has only worsened in the era of citrus greening disease, also …
Attracting Students to the Citrus Industry
Citrus Australia is preparing a program to improve education opportunities and employment pathways in the citrus industry, as well as in wider horticulture. Citrus Australia CEO Nathan Hancock said the industry is committed to forming a deeper partnership with education providers to ensure students are aware of the diverse career pathways in the citrus industry. “Currently there is a huge …
Georgia Citrus: Varieties and History
University of Georgia (UGA) plant breeder Wayne Hanna released three seedless citrus trees in 2016. All carry the brand name “Frost” to identify them as UGA products. There is a tangerine (Sweet Frost), a lemon (Grand Frost) and a grapefruit (Pink Frost). Earlier this year, the trio became a quartet with the addition of a navel orange (Southern Frost). Hanna says …
Sneak Peek: January 2022 Citrus Industry
With the new year, Citrus Industry debuts a new look in the January issue! The magazine has been refreshed with a redesign, but readers will still find the same great content they rely upon to produce the best citrus. The January issue features a focus on pest management, with four articles covering this topic. Two of these articles address biological …
Shining the Light on Tree Health
At a University of Florida Institute of Food and Agricultural Sciences Extension citrus field day held earlier this month, plant pathologist Amit Levy talked with growers about ways to evaluate tree health. “A good evaluation should be correlated to the yield that the trees will produce,” explained Levy. “The evaluation should be concentrated on the tree health, and not on …





























