Fruit drop continues to plague Florida citrus groves. Growers and researchers are seeking ways to mitigate the problem. This was the topic of a number of presentations during the Florida Citrus Growers’ Institute held in Avon Park in April. Michael Rogers, director of the Citrus Research and Education Center in Lake Alfred, discusses those presentations during the May All In …
Update on CRDF Research Projects
The Citrus Research and Development Foundation (CRDF) Research Management Committee and board of directors recently approved projects for funding. The first CRDF research project has approval for funding of a final year of research by the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) to study the lebbeck mealybug and its management. “The Research Management Committee debated this …
High Summer Temperatures Take a Toll on Trees
By Anirban Guha and Christopher Vincent A quick body temperature test is common these days before entering many workplaces, hospitals and clinics due to the ongoing COVID-19 pandemic. The purpose is to screen people for fevers, usually with a non-contact infrared thermometer. Measurement of plant body temperatures also has become common for many field crops, not to screen for infectious …
Representatives Ask for HLB Pesticide Approval
U.S. Representatives Kat Cammack and Al Lawson led members of the Florida congressional delegation to ask the U.S. Environmental Protection Agency (EPA) for expeditious approval of Vismax, a biochemical pesticide for HLB. A letter from the representatives asks the EPA to rapidly approve the use of Vismax in preventing HLB so the industry may access this product before the start …
Uncle Matt’s Organic Launches Low-Calorie OJ
Uncle Matt’s Organic recently announced the launch of its Matt50 orange juice beverage. Matt50 contains half the sugar and calories of regular orange juice and is boosted with Vitamin C, prebiotics, probiotics, calcium, potassium and folate. Susan McLean, Uncle Matt’s Organic vice president of marketing and innovation, said Matt50 contains just 50 calories per serving. It is sweetened with organic stevia, a …
PIECES OF THE PAST: A Commanding Leader in Citrus Marketing
By Brenda Eubanks Burnette The youngest child of John Wesley Commander Jr., Charles Clements Commander was born on Jan. 23, 1886, in Dawson, Georgia. At the age of 13, he began working as a water boy and a hand in a sawmill until the family relocated to the city of Terra Ceia in Manatee County, Florida, in 1903. Commander became …
Keeping Soil pH at the Optimal Level
By Brandon White This time of year is the end of the peak nutrient demand for citrus trees. Regardless of the types of fertilizer or inputs applied in the groves, trees have been taking up nutrients while growing in full tilt during the spring season. One of the greatest factors determining how well trees take up nutrients is soil pH. …
Protecting Citrus During Prolonged Dry Periods
Hot and dry conditions are being seen in citrus groves across the Southeast. Growers are reminded to keep their trees — young and old — supplied with an ample amount of water. Citrus grower Kim Jones, who owns a citrus packing facility in Monticello, Florida, and is part-owner of a similar facility in Tifton, Georgia, discusses the importance of keeping …
Keep CTV Under Control
By Amit Levy Citrus tristeza virus (CTV) infects the citrus phloem. CTV infects almost all citrus varieties, but it causes different disease symptoms depending on the virus isolate, the citrus variety and scion-rootstock combination. Florida has three dominant strains of CTV: T36, a decline-causing strain T30, which normally does not cause severe disease VT, a stem-pitting causing strain CTV is …
Help for Floridians Facing High Fuel Prices
Gas prices in Florida are at an all-time high. According to the American Automobile Association (AAA), the average cost of a gallon of regular unleaded fuel in Florida on May 16 was $4.497, which is $0.014 higher than the national average. Gas prices are up $1.60 cents per gallon from one year ago, while diesel prices have rose $2.62 over …
Grower Gives Update on Work With Cover Crops
Florida citrus grower Ed James shared his successful experience with cover crops during a recent event he hosted at his Howey-in-the-Hills grove. The event, sponsored by Sand to Soil Services, included talks from industry experts on soil health and plant nutrition. James said his production went to “zero” before he planted cover crops about 12 years ago. Production “gradually came …
Citrus Nutrient Deficiencies? There’s an App for That
While sending citrus tissue samples to the lab for analysis remains important, the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) has developed a smartphone application (app) that can supplement lab analysis to identify leaf symptoms of key nutrient deficiencies and certain pests and diseases. Arnold Schumann, a professor of soil and water science with UF/IFAS, demonstrated how …
Diagnosing Herbicide Phytotoxicity in Citrus
By Ramdas Kanissery, Nimal Timilsina and Ruby Tiwari Chemical weed control is an essential component of the toolbox to keep weeds in check in citrus groves. Citrus growers primarily rely on herbicide to manage weeds due to their efficacy and cost-effectiveness. Despite their benefits, herbicides may have a wide range of unintended effects on citrus. For instance, an herbicide-related injury …
Rotate Psyllid Products, Fundecitrus Urges
Brazil’s Fundecitrus has launched the Insecticide Rotation Guide for Psyllid Control. Its aim is to help producers control the insect vector of citrus greening, highlighting the importance of proper rotation of products to avoid the selection of resistant psyllids. The resistance of insects and mites to pesticides can compromise the effectiveness of products and, consequently, the control of the pest …
Alico Has Lower Production but Higher Prices
Alico Inc. reported it had reduced orange production and lower pound solids per box during the six months that ended March 31. However, the company received higher prices per pound solids. For the period, Alico Citrus harvested approximately 4.1 million boxes of fruit, a decrease of 10.3% from the same period of the prior fiscal year. The decrease is principally related to fewer pieces …
Pests, Pathogens and IPCs
By Lauren Diepenbrock, Megan Dewdney, Fernando Alferez, Jawwad Qureshi and Ozgur Batuman Individual protective covers (IPCs) are becoming commonplace in citrus production to support the development of young trees after planting. IPCs are made of fine mesh and are intended to keep Asian citrus psyllids (ACP) off young plants. Because ACP can transmit the pathogen that causes citrus greening/huanglongbing, preventing …
Floridians Worry About Economic Outlook
Jerry Parrish, an economist with Florida State University, returned to speak at the annual Lay of the Land Conference last month in Lakeland, Florida. Parrish is always a popular speaker for his big-picture economic outlook and engaging style. He is not a dull economist. Parrish said the major themes to watch for in 2022 are the Federal Reserve interest rates; …
Strong Season for Citrus Grower
“The local market has improved since last season,” says citrus grower Chip Henry. “I’ve gained customers, and existing ones are buying more. When people know the fruit is being harvested, they seek out that local supply and want to support their local farmers.” Henry grows 12 acres of organic Valencias at McGuire Groves in Apopka, Florida, and sells his fruit …
CRDF Seeks Growers for Rootstock Trials
The Citrus Research and Development Foundation (CRDF) is seeking Florida citrus growers on the Ridge and in the flatwoods of Southwest Florida to potentially be grower-cooperators in large rootstock trials. The goal of the new trials is to identify plant material with the traits needed by growers to realize the highest possible pound solids per acre and increase tree viability …
Now Is the Time to Start Scouting for Rust Mites
By Xavier Martini Rust mites are recurrent pests in Florida that pose problems mostly in fresh citrus production. While severe infestations can lead to fruit drop, leaf injury and abscission, rust mites cause aesthetic damage in the form of sharkskin or bronzing on the skin of fresh fruit (Figure 1A). Fresh fruit requires clean and undamaged skin, and any abrasions …