By Jaci Schreckengost For grapefruit growers, huanglongbing (HLB) has been a huge issue, leading to many fears in the industry, including the fear of a shortage. Rob Atchley, general manager of citrus groves for Duda Farm Fresh Foods, says HLB makes crops vulnerable to new stresses the trees have not previously encountered. He says these stresses can turn into fruit …
In-Field Fruit Fogging for Psyllid Control
The California Citrus Research Board (CRB) hosted live Asian citrus psyllid (ACP) fogging demonstrations in April. The purpose was to show the viability of controlling the spread of ACP by fogging shipments of citrus on the truck, as close to the harvested field as possible. Spencer Walse, CRB research scientist specializing in chemical applications in agriculture, carried out the demonstrations. He is based at …
Orange Forecast Drops for Florida and California
The citrus crop forecast, delivered by Mark Hudson of the U.S. Department of Agriculture’s (USDA) National Agricultural Statistics Service in Washington, D.C., showed a 4 percent drop in Florida oranges and a 2 percent drop in California oranges. In total, the U.S. all-orange forecast for the 2016-2017 season dropped 3 percent from last month and is down 13 percent from …
Grower: Small Fruit Size, PFD Are Issues
Grower and harvester Charles Wilson of Lake Placid was among those sharing information at a citrus grower forum in Sebring on November 10. “There seems to be a pretty good fruit set blossom unaffected by PFD (postbloom fruit drop),” Wilson says. “But the fruit size is extremely small … and that’s going to definitely affect our yield.” “I see PFD …
Slow Start for Fresh Florida Grapefruit Season
Fresh Florida grapefruit shipments continue to decline in concert with the downturn in production resulting from HLB and other problems. On October 26, the Florida Department of Citrus projected fresh Florida grapefruit shipments will be about 4.13 million boxes this season. Three seasons ago, in 2013-14, fresh Florida grapefruit shipments totaled 6.1 million boxes and have dropped in each season …
Growing Citrus Hydroponically
The benefits and challenges of growing citrus hydroponically are addressed by University of Florida researcher Arnold Schumann in this interview with Southeast AgNet’s Tacy Callies. Benefits include high, early fruit production. Nutrition is one of the challenges. Download Audio Sponsored ContentTake Advantage of Rising Temperatures to Treat for Fire AntsJuly 1, 2025Take the Sting Out of Fire AntsJune 1, 2025A …
What We’ve Learned From 20 Years of HLB Research in Florida
By Michael Rogers It has now been two decades since huanglongbing (HLB), or citrus greening, was first detected in Florida. That announcement in August 2005 changed everything for the Florida citrus industry. At the time, Florida citrus was still a global powerhouse. Less than a year earlier, HLB had been confirmed in Brazil, and we were aware of its devastating …
Citrus Greening Seminar Featured International Experts
Fundecitrus recently held an international seminar dedicated to citrus greening. The event had approximately 150 participants and featured experts from China and Brazil. GENOME EDITING Xuefeng Wang, from China’s Southwest University’s Citrus Research Institute, highlighted his interest in building a solid partnership in the area of genome editing. He said his group has already identified promising genes that can contribute …
Alico Announces Harvest Results for Fiscal Year
Alico, Inc., which completed its last major citrus harvest this year, announced results for the fourth quarter and fiscal year ended Sept. 30. LESS PRODUCTION For the fiscal year, Alico Citrus harvested 2.3 million boxes of fruit, a decrease of 25.9% from the prior year. It harvested 944,000 boxes of early- and mid-season oranges, down 20.9% from 2024. Its Valencia …
CRDF Considers Research Management Committee Recommendations
The Citrus Research and Development Foundation (CRDF) convened its November board of directors meeting to take up recommendations from its Research Management Committee. According to Rick Dantzler, CRDF chief operating officer, one of those recommendations was funding a proposal from Swadesh Santra, who is a professor of chemistry with the University of Central Florida. “This funding would allow Dr. Santra …
Florida Farm Bureau Supports Amending OJ Standard
Florida Farm Bureau has submitted comments supporting the Food and Drug Administration’s (FDA) proposal to amend the standard of identity (SOI) for pasteurized orange juice (POJ) by lowering the minimum soluble solids content from 10.5° to 10° Brix. The FDA proposed an amendment earlier this year in response to a 2021 Florida citrus industry petition. Following are some comments from …
Positive Signs Being Seen in Florida Groves
In the November Highlands County Citrus Growers Association newsletter, President Riley McKenna and Executive Director Ray Royce reported mostly positive signs they’ve been seeing in groves. MCKENNA “As the month progresses, so have the cooler nighttime temperatures. This cold front marks an important shift moving forward into our early harvest season,” said McKenna. “It brings both anticipation for fruit ripening …
Citrus Canker Detection in Alabama
Citrus canker, a federal and state regulated plant disease, has been detected in Mobile County, Alabama. As required by federal law, the Alabama Department of Agriculture and Industries (ADAI) will establish a citrus canker quarantine for the county. The Auburn University Plant Pathology Lab confirmed the first detection from foliage and fruit samples collected during ADAI’s routine citrus survey. The …
Citrus Greening Incidence Increasing in Brazil
Fundecitrus’ annual survey of citrus greening incidence shows that in 2025 the disease affected 47.63% of orange trees in the Citrus Belt of São Paulo and the Triângulo/Southwest Minas Gerais region. This represents a 7.4% increase compared to 2024, when the incidence was 44.35%. SLOWER RATE OF INCREASE However, for the second consecutive year, a slowdown in the rate of …
Putting Down Brown Rot
By Megan Dewdney Sometimes there is an unfortunate coincidence between the timing of fruit changing color and rain events. This can set up a situation where brown rot occurs unexpectedly and growers need to stop the disease after it has begun. CONTROL OPTIONS By this time of year, the traditional brown rot control measures are less effective. These are primarily …
Brazilian Orange Forecast Revised
On Sept. 10, Brazil reduced the 2025–26 orange forecast for the São Paulo and Triângulo/Southwest Minas Gerais Citrus Belt by 2.5% from the season’s initial forecast, to 306.74 million boxes. This was the first revised forecast issued by Fundecitrus since May. The reduction was mainly due to the increased projected fruit drop rate, which was a result of the increased …
Factors That Influence Juice Quality
By Tripti Vashisth, Johann Hiller and Taylor Livingston Poor fruit quality has long been a significant hurdle for sweet orange growers in the HLB era. With high fruit drop rates and challenges in harvest management, many growers find themselves picking fruit earlier than ideal, resulting in subpar Brix levels. To effectively improve the Brix of the fruit, it is essential …
Survey Shows Oxytetracycline Use and Benefits
A 2024 survey showed that most Florida citrus growers used oxytetracycline (OTC) trunk injection on most of their acres, resulting in improved yield and reduced fruit drop. Tara Wade, associate professor at the University of Florida Institute of Food and Agricultural Sciences Southwest Florida Research and Education Center, presented survey results at the recent Citrus & Specialty Crop Expo. OTC …
Expo Delivers Research Updates and Practical Tools for Growers
By Michael E. Rogers The 2025 Citrus & Specialty Crop Expo took place Aug. 20–21 at the Florida State Fairgrounds in Tampa. The event brought growers, researchers and industry professionals together for two full days of education and discussion. This year’s program featured what may have been a record number of University of Florida Institute of Food and Agricultural Sciences …
Florida CUPS: From a Small Plot of Potted Plants to 1,500 Acres
When University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Professor Arnold Schumann started a citrus under protective screen (CUPS) plot in Florida in 2014, the grapefruit trees were in above-ground pots. The plot at the Citrus Research and Education Center was on 1.33 acres that included 1 acre of planted citrus. After five years, the grapefruit trees on …




























