Nutrition: No One Size Fits All

Tacy CalliesNutrition, Research

By Tripti Vashisth Constant supply and soil application of macronutrients and micronutrients can improve the health and productivity of HLB-affected citrus. A 20 to 50 percent higher than University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) recommended rate of micronutrients is beneficial for HLB-affected trees. However, the nutrition program should be customized for each grove, as no one …

Algal Spot: A Re-emerging Disease

Tacy CalliesDiseases

By Megan M. Dewdney Algal spot has not been seen frequently for many years, but in the last few years I have been getting more questions about identification and management. The disease is caused by a green alga, Cephaleuros virescens. The alga is not considered a parasite, as it grows superficially, but it does cause damage to trees if left …

graft

Some Scions Incompatible With US-1283 Rootstock

Daniel CooperIndustry News Release, Rootstocks

By Kim D. Bowman and Ute Albrecht The US-1283 rootstock was released by the U.S. Department of Agriculture (USDA) in 2014, based on field performance with Hamlin 1-4-1 sweet orange in trials at two different locations in Florida severely affected by huanglongbing disease. One of these trials was in St. Lucie County and of 14 years duration, while the second …

Oranges

Working Toward Better Juice Oranges

Ernie NeffAll In For Citrus Podcast, Orange Juice

University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) geneticist and plant breeder Jude Grosser discusses the need for new juice oranges and some new cultivar choices. Grosser says one reason for new varieties is the decline in orange juice sales. “In my opinion, the best way to combat that is to have a higher quality orange juice that’s …

Citrus Leprosis Poses a Threat to Florida

Tacy CalliesDiseases

By Amit Levy, Ozgur Batuman, Peggy Sieburth and Lauren Diepenbrock Citrus leprosis is an exotic viral disease not currently present in Florida. This disease is of interest since it was reported in citrus in Florida and Brazil in the early 1900s, where it caused great crop and tree losses, but it was eliminated from Florida in the early 1960s. Currently, …

orange

Florida Citrus Forecast: Grapefruit Up, Oranges Down

Daniel CooperCrop Forecast

The 2019–2020 citrus crop forecast released Feb. 11 by the U.S. Department of Agriculture (USDA) showed changes for Florida orange and grapefruit production levels. ORANGES The February forecast for Florida oranges is 2 million boxes lower than last month’s figures. However, if realized, the Florida all-orange forecast of 72 million boxes will be up slightly from last season’s final production. …

Planning for Foliar Disease Management in 2020

Tacy CalliesDiseases

By Megan Dewdney and Evan Johnson In 2019, the trend of fewer problems with foliar fungal diseases for Florida citrus continued, which was good news for the industry. Despite the El Niño conditions during the spring, little postbloom fruit drop (PFD) was observed because the temperatures were low (< 75 F) when it rained during bloom. The southern parts of …

Youth Grow Award-Winning Citrus Trees

Tacy CalliesAwards

The Highlands County Youth Citrus Project is a 4-H program that teaches 8- to 18-year-old students how to successfully grow citrus in Florida. Thirty-four citrus trees (Valencia on C-54 Carpenter) were entered into the program this year. All of the trees were grown in a protective cover and tested by the state of Florida. The orange trees will be on …

Managing Orange Production Costs

Ernie NeffEconomics, Production

University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Extension economist Ariel Singerman discusses a recent article he wrote titled “How Much Can Florida Growers Afford to Spend on Caretaking Processed Orange Groves?” The article addresses the grove management decisions growers must make in the face of recent orange price declines. It points out that an average grower would …

aphis

Black Spot Scouting and Control

Ernie Neffblack spot

“The most important time to scout for black spot is when the fruit begin to change color,” said University of Florida Institute of Food and Agricultural Sciences plant pathologist Megan Dewdney. She has seen color change for Valencia oranges, the most commonly infected variety, from December to March. But she added it is usually late-February to early-March when citrus black …

Orange Opportunities

Tacy CalliesVarieties

New sweet orange cultivars for processing can be harvested throughout the Florida citrus season. By Jude Grosser, Fred Gmitter and Bill Castle Florida orange juice has always been the gold standard among the growing portfolio of fruit juices and blends available to consumers. However, the now endemic citrus greening disease or huanglongbing (HLB) threatens this status by causing reduced fruit …

florida

Florida Grapefruit Production Up

Daniel CooperCrop Forecast

The 2019–20 Florida citrus crop forecast released on Jan. 10 by the U.S. Department of Agriculture (USDA) held steady for oranges, tangerines and tangelos while grapefruit saw gains. Oranges The Florida orange forecast is 74 million boxes, unchanged from the December forecast. If realized, this will be 3 percent more than last season’s final production. The forecast consists of 32 …

How Much Can Florida Growers Afford to Spend on Caretaking Processed Orange Groves?

Tacy CalliesEconomics

By Ariel Singerman The decrease in prices for processed oranges this season presents growers with challenging management decisions. Last October, the Florida Department of Citrus (FDOC) projected an average 2019–20 price for early and mid-season oranges of $1.62 per pound solids, while for Valencia oranges the forecast was $1.78 per pound solids. Those projected prices represent a 26 percent decline …

Fresh Fruit Is ‘All About the Box’

Ernie NeffFresh

Polk County grower Ed Dickinson has good things to say about some orange-mandarin juice and fresh mandarins he sampled at the Citrus Research and Education Center (CREC) in November. Dickinson was one of dozens who tried new University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) samples. He and others who scored the juice and fruit will help researchers …

Inside Brazil’s Citrus Industry

Tacy CalliesBrazil

By Stephen H. Futch and Rhuanito S. Ferrarezi Many changes have taken place in the Brazilian citrus industry over the past 20 years as growers battle pests, diseases and market challenges. Throughout this process, the industry has encountered difficulties but has continued to maintain production through innovative practices that are founded in science, economics and sustainability. This article provides an …

florida all

December Florida Citrus Crop Forecast

Daniel CooperCrop Forecast

The U.S. Department of Agriculture (USDA) released its second citrus crop forecast for the 2019–20 season on Dec. 10. ORANGESThe Florida orange forecast is 74 million boxes, unchanged from the Oct. 10 forecast. If realized, this forecast will be 3 percent more than last season’s final production. The forecast consists of 32 million boxes of non-Valencia oranges (early, midseason and …

Thoughts on the Scion and Rootstock Selection Process

Tacy CalliesRootstocks, Scions

By Bill Castle If timing is everything, then let me suggest that the timing is right to consider the following proposals about making scion and rootstock choices in the Florida citrus industry: What to plant? That is a huge question that could be initially addressed by a one-day program carefully planned as to objectives, format and participants. I was reminded …

acp

Psyllid Management: Organic and Conventional Systems

Tacy CalliesPests, Psyllids, Research

By Jawwad Qureshi Management of the Asian citrus psyllid (ACP) is needed in multiple environments, such as organic and conventional production systems and urban areas. However, the tools and approach may be different depending on the circumstances. Chemical control is the primary method used in commercial production to reduce psyllid populations, but the increased use of insecticides negatively affects the …

citrus

Sample the Latest Citrus From UF/IFAS

Daniel CooperIndustry News Release

(UF/IFAS) — As citrus growers, packers, processors, gift-fruit shippers and others taste, feel and smell the latest varieties from the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS), they hope their taste buds explode with flavor and that a fresh aroma fills the room at the Citrus Research and Education Center (CREC). These participants will get two more …

FDOC Tax Rate Still Under Debate

Ernie NeffFlorida Citrus Commission

The Florida Citrus Commission continues to discuss the current season budget and grower tax rates for the Florida Department of Citrus (FDOC). Commission Chairman Ellis Hunt said Wednesday there is “a good possibility” the commission will set the budget and tax rates at a Nov. 20 meeting. In normal years, the budget and tax rates are set by the end of …