By Larry Duncan Successive hard freezes in Florida in the late 1980s resulted in widespread replanting of citrus groves. Within a few years, many groves on the Central Ridge had discrete patches of poorly growing, chlorotic young trees amid patches of vigorously growing trees. Stubby root symptoms on the declining trees suggested damage by sting nematodes (Belonolaimus longicaudatus). This nematode …
Florida Citrus Forecast: Oranges Steady; Other Crops Down
The March 2018-2019 Florida all-orange forecast released by the U.S. Department of Agriculture (USDA) is 77 million boxes, the same as the February forecast. If realized, this will be 71 percent higher than last season’s hurricane-affected production. ORANGESThe forecast for non-Valencia production has been lowered by 1 million boxes to 31 million boxes. The row count survey, conducted February 25-26, …
Update on the Florida Citrus Recovery Block Grant
The Florida Citrus Recovery Block Grant (CRBG) program continues to move forward. As of Friday, the Florida Department of Emergency Management (FDEM) had received 718 applications and submitted more than $23.6 million to financial processing. FDEM staff has been working overtime to ensure the payments are received in an efficient manner. FDEM and the U.S. Department of Agriculture (USDA) Risk Management …
Developments at CRDF
Citrus Research and Development Foundation (CRDF) Chief Operating Officer Rick Dantzler updated growers on CRDF activities during the Florida Citrus Show in January. He summarized his comments in an interview after his presentation. Here are a few key points: “We’ve had a 25 percent reduction in our staff” since he joined CRDF last year, Dantzler said. “Growers are having to …
Researching Scouting Strategies for ACP
Several research projects continue at University of California Riverside to evaluate strategies for better detection of Asian citrus psyllid (ACP). Monique Rivera, assistant cooperative Extension specialist, is looking into something referred to as the ‘edge effect’ and how it pertains to ACP control. “The ‘edge effect’ is basically an ecological term that we’re using in the context of Asian citrus …
Orange Juice Market Outlook
By Marcos Fava Neves A recent Nielsen report reveals negative news for U.S. retail orange juice (OJ) sales. When comparing November 2018 with November 2017, the decline in OJ consumption was 7.4 percent. The value shrunk 3.4 percent, dropping from $223.94 million to $216.44 million. This represents a $7 million dollar loss. Not-from-concentrate juice came down 12 percent, and reconstituted …
Covers Protect Young Trees from HLB
Individual protective covers (IPCs) on young trees have prevented HLB infection in one year of study, a University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researcher said. Fernando Alferez, citrus horticulturist at the Southwest Florida Research and Education Center (SWFREC), announced his promising results at the recent Florida Citrus Show in Fort Pierce. “They (IPCs) are protecting the …
Automated System Under Study to Deliver Bactericides
Imagine using a robotic arm to grip and puncture the trunk of a citrus tree to deliver chemicals into the vascular parts of the plant, reducing its susceptibility to the citrus greening disease. Ozgur Batuman, an assistant professor of plant pathology at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS), leads a team of researchers trying to …
Developing New Greening-Tolerant Citrus
When Nian Wang pieces together sequences of genes, he hopes to make citrus varieties that are more tolerant to the deadly disease known as citrus greening, which has devastated a multibillion-dollar-a-year industry in Florida. Wang, a professor of microbiology and cell science with the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS), will help an investigation in which …
Grapefruit, Tangerines and Tangelos See Small Changes in Crop Forecast
The U.S. Department of Agriculture released the January and February citrus crop forecasts on Feb. 8. January’s forecast had been delayed due to the government shutdown. JANUARYJanuary’s forecast showed a decrease in Florida grapefruit, tangelo and tangerine production compared to December. Grapefruit fell from 6.4 million boxes to 6.2 million boxes. Tangerines and tangelos dropped from 1.2 million boxes to …
Citrus Recovery Money Starts to Flow
Florida is starting to distribute federal disaster-relief money that was approved last year to help the citrus industry after Hurricane Irma caused massive damage to groves. Jared Moskowitz, director of the Florida Division of Emergency Management, said Wednesday that the state recently awarded $14 million from a $343 million federal block grant for the industry and continues to process and …
Department of Citrus Receives $550,000 in USDA Funding
The U.S. Department of Agriculture (USDA) announced a $200 million award to 57 organizations through the Agricultural Trade Promotion Program to help the nation’s agriculture community identify and access new export markets. The Florida Department of Citrus was one of the specified organizations and is set to receive $550,000 in funding to promote citrus in various new markets. Commissioner Nicole “Nikki” Fried shared, “We’re thrilled the USDA has provided this opportunity …
Indian River’s Grapefruit Plight
Florida grapefruit trees have taken a much harder hit from HLB, also known as greening disease, in recent years than orange trees have. Grapefruit production has plummeted drastically, and growers are desperately seeking ways to keep trees alive and productive. The fruit’s troubles have hit especially hard in the Indian River area, known worldwide for its grapefruit. Indian River Citrus …
Thermotherapy’s Effects on Fruit Drop, Yield and Quality
By Megan Dewdney, Evan Johnson, Naweena Thapa and Michelle Danyluk In 2015, we started a large-scale project to determine if thermotherapy would be an effective huanglongbing (HLB) treatment for field trees. Some of the objectives were to determine effective temperature-time combinations for thermotherapy, which season gave optimal results for thermotherapy, and the effect on yield in subsequent years. TRIAL DETAILSComprehensive …
2016-17 Florida Citrus Season: Smaller Harvest, Higher Prices
A new report from economists with the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Economic Impact Analysis Program (EIAP) showed higher prices offset production declines during Florida’s 2016-17 citrus growing season, and the industry’s overall economic contributions changed little from 2015-16. Titled, “Economic Contributions of the Florida Citrus Industry in 2016-17,” the report was formally presented to …
Ag Engineer Joins UF Scientists to Restore Grapefruit Industry
An agricultural engineer whose current research projects include the simulation of agricultural management impacts on water quantity and quality in the upper Floridan aquifer has joined the University of Florida’s Indian River Research and Education Center (IRREC). Sandra Guzmán will lead the center’s irrigation and hydrology program. Guzmán started her position as an assistant professor of agricultural and biological engineering …
California Citrus Conference Calls Attention to Key Industry Issues
By Len Wilcox The Citrus Research Board’s (CRB) annual California Citrus Conference took place in October in Visalia. This year’s event included a celebration of the organization’s 50th anniversary. The CRB is an important resource to California’s citrus industry. It awards more than $7 million each year to researchers throughout the state. Since 2008, CRB has focused much of its …
December Citrus Crop Forecast Unchanged
The U.S. Department of Agriculture’s 2018-2019 Florida all-orange forecast for December is 77 million boxes, unchanged from the November forecast. If realized, this forecast will be 71 percent more than last season’s final production. The forecast consists of 32 million boxes of the non-Valencia oranges (early, midseason and Navel varieties) and 45 million boxes of Valencia oranges. Current fruit size …
Researchers to Study New HLB Treatment Method
University of California (UC) Davis research scientist Louise Ferguson is taking part in a $3.4 million project titled “Development of an automated delivery system for therapeutic materials to treat HLB-infected citrus.” The study is funded by the U.S. Department of Agriculture’s National Institute of Food and Agriculture. The four-year project includes work by researchers at the University of Florida, UC …
Taking Technology to the Grove
By Ernie Neff Jerry Mixon’s use of netting to keep birds from blueberries helped pique his interest in growing citrus under protective screen (CUPS) to exclude HLB-spreading psyllids. But he credits University of Florida researcher Arnold Schumann with helping him bring his Polk County CUPS project to fruition. Mixon met Schumann in 2015, the year after Schumann’s 1-acre CUPS was …





























