Michael Rogers provided updates on the Citrus Nutrition Box program initiated last fall and on the search for a new University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) vice president. He also announced the hiring of a new citrus Extension agent. Rogers is director of the UF/IFAS Citrus Research and Education Center (CREC). NUTRITION BOX PROGRAMRogers said 75 …
Algal Spot: A Re-emerging Disease
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 …
All In For Citrus Podcast, February 2020
This month’s podcast includes three timely interviews on topics of interest to the citrus industry. Citrus Research and Education Center Director Michael Rogers gives an update on the Citrus Nutrition Box Program that started last fall, including the individualized nutrition recommendations being made by University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) experts. Rogers also shares the latest …
New UF/IFAS Citrus Extension Agent
(UF/IFAS) — When you meet Ajia Paolillo, you might think that everything old is new again. That’s because Paolillo, the new University of Florida Institute of Food and Agricultural Sciences Extension (UF/IFAS) citrus agent for DeSoto, Hardee and Manatee counties, leans heavily on the experience of faculty colleagues from previous experiences. “I learned so much working with Stephen Futch, Bill …
Root Health Update
Evan Johnson, a University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) plant pathologist at the Citrus Research and Education Center, updates efforts to help citrus tree roots cope with HLB. He starts by noting that around 10 years ago he and former UF/IFAS researcher Jim Graham discovered “that HLB causes severe damage to the root system.” They hoped …
Keeping Fresh Citrus Safe
Michelle Danyluk describes training that was provided Feb. 11 to help fresh citrus growers comply with the federal Produce Safety Rule. Danyluk is a University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) professor and Extension specialist at the Citrus Research and Education Center (CREC). She and several other UF/IFAS faculty conducted the training at the CREC. The Produce …
Planning for Foliar Disease Management in 2020
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 …
‘Doubling Down’ on Citrus Communications
“This year we’re really doubling down and looking to improve our communications even further,” says Michael Rogers, director of the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Citrus Research and Education Center (CREC). “Communications continue to be our focus in the statewide IFAS citrus program.” A big part of the communication effort is getting information to growers …
Purple Guts? You’ve Got Lebbeck Mealybugs!
One of Lauren Diepenbrock’s props at a Jan. 14 OJ break at the Citrus Research and Education Center was a paper plate bearing the message “Easy diagnostic: smashed lebbeck mealybug = purple guts.” Diepenbrock, a University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) entomologist, explains the meaning of the plate’s message. UF/IFAS researcher Lance Osborne found a lebbeck …
Orange Opportunities
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 …
Fast, Inexpensive Soil pH Testing
Multi-county citrus Extension agent Chris Oswalt took several baggies of soil to an OJ break he hosted Jan. 14 at the Citrus Research and Education Center. He inserted a handheld pH meter into the soil in one of the baggies and within seconds told watching growers the content’s pH level. “Soil pH is real important, especially with HLB-infected trees today,” …
CUPS: Managing Small Fruit Size
Fresh fruit has generally grown well in a citrus under protective screen (CUPS) facility at the Citrus Research and Education Center, but there has been an issue with small fruit size. Laura Waldo, a senior biological scientist who works with lead CUPS researcher Arnold Schumann, discusses the problem and likely solutions. Waldo says causes of the smaller fruit size have …
Supporting Citrus Researchers for 37 Years
Barbara Thompson worked approximately 37 years helping Citrus Research and Education Center (CREC) scientists publish manuscripts that aided growers and others in Florida’s citrus industry. For the last several years, she also took over the CREC reception area. She greeted visitors, answered phones and helped growers locate the proper researcher or other agency that could answer their questions. She retired …
HLB and Grove Budgeting
Citrus Research and Education Center Director Michael Rogers says while much progress has been made in dealing with HLB, many growers now face economic woes because of high orange juice inventories. He discusses some decisions that growers facing those economic issues will have to make and offers some suggestions. “We’ve come a long way since HLB came to Florida,” Rogers …
New Varieties and Juice Blends Discussed
Growers recently sampled and graded new fruit varieties, as well as some juice blends, at University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) fruit display events. UF/IFAS plant breeder Jude Grosser commented on the fruit varieties and juice following a sampling event at the Citrus Research and Education Center. “It’s kind of neat because when we first started …
Niche Market and Dooryard Citrus for the HLB World
By Jude Grosser, Manjul Dutt and Fred Gmitter The University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) citrus improvement team at the Citrus Research and Education Center (CREC) has developed a broad citrus germplasm base. This provides opportunities to generate diverse, interesting and possibly lucrative selections with niche market and dooryard potential. Several such selections are showing reasonable …
Fresh Fruit Is ‘All About the Box’
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 …
Nutrition Sampling Program Update
Approximately 110 Florida citrus growers picked up nutrition sampling kits they’ll use to help ensure their groves are receiving proper nutrition this season. The kits are part of the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Citrus Nutrition Management Program launched this fall. The kits provide growers everything they need to collect four leaf samples and one …
CUPS Featured at Field Day
Growers already producing fresh citrus under protective screen (CUPS) were among approximately 30 attendees at a CUPS field day Dec. 12 at the Citrus Research and Education Center in Lake Alfred, Florida. Lead CUPS scientist Arnold Schumann with the University of Florida Institute of Food and Agricultural Sciences and other researchers described activities in the screened-in facility. Attendees saw much …
Food-Safety Marathon: Keeping Up With the Produce Safety Rule
By Travis Chapin, Matt Krug and Michelle Danyluk It’s been four years since the final Produce Safety Rule (PSR) was published in the Federal Register. The further we get into implementation of the PSR, the more it really seems like a marathon and not a sprint. By January 2020, all operations covered under the PSR should be complying with applicable …





























