Manage Soil pH and Nutrition for HLB

Ernie NeffHLB Management


Growers with trees affected by HLB should try to maintain soil pH in the 6 to 6.5 range, Kelly Morgan told numerous growers attending a recent Citrus Nutrition Day event. Morgan is director of the University of Florida Institute of Food and Agricultural Sciences’ (UF/IFAS) Southwest Florida Research and Education Center. Morgan explained that soil pH affects trees’ ability to … Read More

Italian Citrus Breeding

Ernie NeffBreeding


Citrus tristeza virus (CTV) began spreading in Sicily in the early 2000s because the Italian citrus industry’s standard rootstock was CTV-susceptible sour orange, reported Marco Caruso at a recent symposium of international citrus breeders. Consequently, approximately 74,000 acres will be replanted with CTV-tolerant rootstocks over the next few years, he said. Caruso, a citrus breeding expert with Italy’s Research Centre … Read More

California Citrus Crop Report Summary

Len WilcoxCalifornia Corner

California Citrus Mutual reports that the California citrus crop summary for 2017 is now complete. The data shows a strong season for the state’s citrus growers. The total value for all California citrus is about $3.84 billion. There are 324,360 acres, which produced 257,830 tons of citrus. Navels continue to hold the number-one spot for acreage with 148,179 bearing acres … Read More

New Varieties a Nurseryman Likes

Ernie NeffVarieties


Jim Dilley of Dilley Citrus Nursery in Punta Gorda was intrigued by some new varieties he sampled at the Citrus Research and Education Center in Lake Alfred recently. Dilley singled out “several of the tangerines: 1818, 1819” as being of interest to him. “They were easy peel. It was apparent that one of them was probably a little earlier than … Read More

Thermotherapy’s Effects on Fruit Drop, Yield and Quality

Tacy CalliesThermotherapy

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 … Read More

Daily Irrigation for HLB-Affected Trees

Ernie NeffCitrus, Irrigation

daily irrigation

Daily irrigation is important in managing HLB-affected trees, a University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) soil scientist told a Citrus Nutrition Day crowd in Bartow on Dec. 11. The researcher, Davie Kadyampakeni, said daily irrigation reduces tree water stress and improves tree water use. According to Kadyampakeni, keeping water in the top 12 inches of soil … Read More

Rogers Reviews 2018 in Citrus

Ernie NeffCitrus


Citrus Research and Education Center Director Michael Rogers recently took a look back at the Florida citrus industry in 2018 from a grower and researcher perspective. Rogers said 2018 was “a bit calmer” for everyone in the industry than the prior year. “Our main citrus-growing regions in the state dodged major hurricanes this year … We really needed a break … Read More

Sneak Peek: January 2019 Citrus Industry Magazine

Tacy CalliesSneak Peek

It’s no secret that the most damaging pest in Florida citrus is the Asian citrus psyllid. But there are other bugs growers need to watch out for, too. The January issue of Citrus Industry magazine takes a look at current pests of concern and offers management methods. An article on HLB reduction strategies focuses on tools growers can use to … Read More

Grower Pete Spyke Discusses New Varieties

Ernie NeffVarieties


Grower and gift fruit shipper Pete Spyke was among more than 100 people who sampled approximately 50 new University of Florida varieties at the Citrus Research and Education Center on Dec. 4. “There’s some good-tasting, easy-peel, seedless (mandarin) varieties that I think will be working their way through the gauntlet,” said Spyke. He added that several will probably be released … Read More

2016-17 Florida Citrus Season: Smaller Harvest, Higher Prices

Daniel CooperEconomics, Industry News Release


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 … Read More

Ag Engineer Joins UF Scientists to Restore Grapefruit Industry

Daniel CooperResearch, Water

agricultural engineer

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 … Read More

California Citrus Conference Calls Attention to Key Industry Issues

Tacy CalliesCalifornia Corner

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 … Read More

Good Varieties for CUPS

Ernie NeffCUPS


At a recent field day for citrus under protective screen (CUPS) in Polk County, researcher Arnold Schumann discussed varieties that appear to work well in the system. Schumann is with the University of Florida Institute of Food and Agricultural Sciences Citrus Research and Education Center. The primary purpose of growing citrus under protective screen is to keep out the Asian … Read More

International Citrus Breeders Draw Attention

Ernie Neffbreeders


Approximately 70 growers, researchers and others listened to citrus breeders from other countries discuss their programs and objectives in Lake Alfred, Florida, earlier this month. The University of Florida Institute of Food and Agricultural Sciences Citrus Research and Education Center (CREC) hosted the event. Michael Rogers, CREC director, provided an overview of the gathering. “This international citrus breeders symposium is … Read More

Growers to Learn About Pest Management at Workshop

Daniel CooperCitrus Greening, HLB Management, Industry News Release, Pests, Psyllids


Citrus growers can learn more about managing Asian citrus psyllids and other pests in a workshop Jan. 8 at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Citrus Research and Education Center (CREC). The psyllid can transmit the bacteria associated with greening disease to citrus trees and has already caused severe damage to Florida’s multi-billion-dollar-a-year citrus industry. … Read More

PIECES OF THE PAST: Like Florida Citrus, Beauty Comes from Inside

Tacy CalliesPieces of the Past

By Brenda Eubanks Burnette In 1937, the Florida Citrus Commission released a booklet titled “How to Get the Most Out of Life,” by etiquette guru Emily Post. It included snippets of wisdom along with numerous plugs for the Florida citrus industry. The first page notes that “Brides Wear Orange Blossoms — because these fragrant, exquisite blossoms, in their flawless purity, symbolize … Read More

Growers Share Nutrition Successes

Ernie NeffNutrition

At the Dec. 11 Citrus Nutrition Day hosted by the University of Florida Institute of Food and Agricultural Sciences Polk County Extension, two growers shared their experiences with nutrition programs. The citrus growers, James Shinn of Shinn Groves/Tree O’Groves Inc. and Matt Story of the Story Companies, shared their knowledge via video interviews with citrus Extension agent Chris Oswalt. Oswalt … Read More

New UF/IFAS Citrus Trial Data Available Soon

Daniel CooperIndustry News Release, Rootstocks


New research data are coming from trials of citrus rootstocks, scions and combinations of the two that University of Florida scientists hope will broaden the options of greening-tolerant citrus varieties available to commercial growers. Michael Rogers, director of the Citrus Research and Education Center (CREC), part of the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS), said scientists … Read More

USDA Releases 3 New Citrus Rootstocks

Daniel CooperCitrus, Rootstocks

citrus rootstock

The U.S. Department of Agriculture has released three new citrus rootstocks that are available for unrestricted public use. The rootstocks are US SuperSour 1, US SuperSour 2 and US SuperSour 3. A new publication provides summary information about the new releases. Get the new publication here:

December Citrus Crop Forecast Unchanged

Daniel CooperCitrus, Crop Forecast, Grapefruit


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 … Read More