In a message below, Mike Sparks, executive vice president/CEO of Florida Citrus Mutual, reports positive news on the current status of the citrus industry’s agenda items in the legislative session. Dear FCM Board and Members: It’s been a whirlwind 2016 in Tallahassee and with a week left in the scheduled legislative session, I have some very positive news to share. …
Combining PGRs and OTC Boosts Returns
By Prudhvi Vulchi, Amit Levy and Tripti Vashisth A three-year commercial grove study evaluated plant growth regulators (PGRs) and oxytetracycline (OTC) in HLB-affected Valencia trees. The results suggest that these practices help HLB-affected trees by two distinct mechanisms. PGRs mainly supported tree growth and productivity by reducing callose accumulation and improving growth-promoting hormone levels in leaves. OTC reduced Candidatus Liberibacter …
Unraveling the Greasy-Green Mystery in Florida Grapefruit
By Megan M. Dewdney, Eva L. Mulandesa and Mark A. Ritenour Greasy-green began to be reported as a problem in Florida by fresh fruit packers and growers around 2020. The disorder, with green blotches on the grapefruit surface, appeared to be different from other known rind disorders. The effect was costly for growers and packers, with reported losses between $20,000 …
Grosser’s Promising Citrus Picks
During a recent webinar, Jude Grosser, University of Florida Institute of Food and Agricultural Sciences professor of plant cell genetics, presented a three-legged stool approach to achieving sustainability in citrus production. Those legs consist of: For the first two legs, Grosser said enhanced tolerance to HLB is a primary goal, along with improving yield and juice quality. During the presentation, …
Sneak Peek: October 2026 Citrus Industry
The October issue of Specialty Crop Grower magazine features citrus research updates, industry developments and more. Coverage ranges from a grapefruit disorder to citrus breeding efforts to rebuilding Florida’s production. The Citrus Industry section, begins on page 22 with “Unraveling the greasy-green mystery in Florida grapefruit,” by Megan M. Dewdney, Eva L. Mulandesa and Mark A. Ritenour. University of Florida …
Cooler Weather Key to Cold-Hardy Citrus Quality
Cold-hardy citrus producers are yearning for some cooler weather. It would not only provide some relief from the warm temperatures being experienced across North Florida, South Georgia and South Alabama, cooler temperatures will aid in color development in this year’s fruit, among other benefits. Mary Sutton, University of Georgia (UGA) assistant professor and citrus Extension specialist, discussed the impact of …
Longer-Lasting Psyllid Control With Nanoparticle Formulation
Chinese researchers have developed a nanoparticle-based formulation that combines an insecticide and a plant-derived repellent to provide longer-lasting control of HLB-spreading Asian citrus psyllids (ACP). An article about their study, published in Nanomaterials, explores a way to extend pesticide effectiveness while reducing damage to citrus leaves. The article was written by Wenhua Rao, Qianying Li, Kaidi Wang, Chao Shen, Guocheng …
Silicon and Salicylic Acid May Benefit W. Murcott
Preharvest silicon (Si) applications, when combined with postharvest salicyclid acid (SA), may increase W. Murcott mandarin fruit size, according to research from Ege University in Türkiye. The study, published in the Ege University Faculty of Agriculture Journal, examined whether the Si and SA applications could help maintain mandarin quality during extended cold storage. The authors are İzzet Atakan Erdallı, Fatih …
A New Way To Stay Current With PULAs
The U.S. Environmental Protection Agency (EPA) announced a new email subscription feature to help pesticide users quickly receive updates from the Bulletins Live! Two system. The updates will include notifications about new Pesticide Use Limitation Areas (PULAs) and changes to existing PULAs. EPA developed this feature in response to requests from pesticide users who asked for better access to Bulletins …
Managing Alternate Bearing With Fruit Thinning
Three University of Florida Institute of Food and Agricultural Sciences researchers recently authored an article explaining how to manage alternate bearing in citrus with fruit thinning. Alternate bearing is the tendency for trees to carry a heavy crop one year, followed by a season of very little fruit. The authors are Masood Jan and Muhammad Shahid with the North Florida …
Nearly Half a Century of Service to Florida Citrus Mutual
Florida Citrus Mutual (FCM) field representative Rusty Wiygul is preparing to retire after 48 years. For nearly half a century, he talked to growers in their groves, listened to their concerns, helped solved problems and built relationships. “Rusty’s career has spanned some of the most significant changes and challenges Florida citrus has ever faced,” FCM stated. “He joined the team …
Challenge 250 to Strengthen Response to Invasive Species
A new initiative aims to strengthen the University of Florida Institute of Food and Agricultural Sciences’ (UF/IFAS) ability to respond rapidly when a new invasive pest or plant disease threatens. Edward “Gilly” Evans, director of the UF/IFAS Tropical Research and Education Center (TREC), launched the Challenge 250 initiative. Named in recognition of the nation’s 250th anniversary, it aims to raise …
Wedgworth Leadership Institute Selects Class XIII
The Wedgworth Leadership Institute for Agriculture and Natural Resources (WLIANR) has selected 30 Florida participants for Class XIII of its two-year leadership development program. The program is designed for emerging agriculture and natural resources professionals who aspire to greater leadership responsibilities in the private and/or public sectors. The program will begin in November and include 11 seminars spanning 55 days. …
New Tool Speeds Regeneration of Gene-Edited Citrus
Editing a plant’s genes is only half the battle. Before a new, improved trait can ever reach a farmer’s field, scientists must be able to grow a whole plant from just a few edited cells. That process can be slow, unreliable and, for some plant species, impossible. A new study describes a way to speed up that bottleneck across crops, …
New Review Details Plant Growth Regulator Research
Plant growth regulators (PGRs) could give citrus growers another tool for managing vigorous trees, reducing pruning needs and potentially improving production efficiency, according to a review of decades of citrus research. The review — “Managing Citrus Canopy Growth for Higher Productivity: A Review of Plant Growth Regulator (PGR) Applications” — was published Sept. 8 in Horticulturae. The authors are Kare …
Florida Citrus Media Efforts and Plan Addressed
The Florida Department of Citrus’ (FDOC) global marketing team on Sept. 16 told the Florida Citrus Commission (FCC) about media activity and shared future social media plans. The FCC is the FDOC’s governing board. CITRUS IN THE MEDIA The team reported strong momentum for Florida citrus in the media, with consumers and across the industry. It shared a media audit …
How To Keep Kaolin on Your Trees Through the Rain
By Christopher Vincent and Rashmi Kumari Florida summers come with intense sunlight, high temperatures and frequent rain. Just as people use sunscreen to protect exposed skin from intense sunlight, plants can benefit from a protective coating on exposed leaf and fruit surfaces. One way to provide this protection is by spraying a kaolin clay particle film on the tree. Although …
Citrus Field Day Featured OLL Varieties and New Rootstocks
The University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) hosted a field day in Jason Griffin’s Polk County grove in mid-September. Griffin has been a long-time collaborator with the university’s citrus breeding program. The event featured many of the later-season OLL varieties developed by Jude Grosser, UF/IFAS professor of plant cell genetics. The OLL line of later-maturing varieties …
PIECES OF THE PAST: More Than a Century of Citrus Commitment
By Brenda Eubanks Burnette I was driving past the Latt Maxcy Corporation recently and found myself remembering when I first met Pat and Patricia Wilson. Pat carried a quiet authority — steady and observant, with a twinkle in his eyes. But the person who truly commanded the room was his petite wife, Patricia. Her energy and determination were unmistakable, and …
Brazilian OJ Industry ‘Challenging,’ Rabobank Reports
According to a September 2026 Rabobank report, the current environment for Brazilian orange juice (OJ) remains challenging for both farmers and the industry, with prices still low but starting to show some slightly positive signs. It reported that spot orange prices for the industry increased from BRL 25/box (approximately $4.30/box in U.S. dollars) in May to BRL 31/box (approximately $6.03/box …