UF/IFAS Personnel Honored

Ernie NeffAwards

Two University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) citrus researchers and one citrus Extension agent were honored this summer, two by the Florida Entomological Society and one by UF/IFAS. JAWWAD QURESHIEntomologist Jawwad Qureshi received the Entomologist of the Year award at the Florida Entomological Society annual meeting. He was also named president of the society for 2018–19. …

Controlling Difficult Weeds in Citrus Groves

Tacy Calliesweeds

By Ramdas Kanissery, Camille McAvoy and Mongi Zekri Some weeds are more difficult to manage in the production system than others due to their ability to grow in an available niche. If given a chance to establish, Guinea grass and goatweed can be the two most difficult weeds to manage. This is not just because they both are prolific seed …

Citrus Production Cost Surveys Scheduled

Daniel CooperEconomics, Production

In an effort to continue to gather accurate production cost data for Florida citrus growers, University of Florida economist Ariel Singerman will be conducting two regional surveys. This will be the fourth year that Singerman has met with citrus growers to gather current production cost data. This information is important for a multitude of reasons, including citrus grove valuations for …

aphis

Hurricane Irma Raises Black Spot Threat

Ernie Neffblack spot, Diseases

University of Florida Institute of Food and Agricultural Sciences Extension pathologist and associate professor Megan Dewdney reported that U.S. Department of Agriculture (USDA) scientist Tim Gottwald thinks there’s a “fairly high” chance that Hurricane Irma spread citrus black spot. Black spot had been confined primarily to Southwest Florida, especially Collier and Hendry counties, before Irma hit the state with damaging …

PFD

When to Be on Canker Alert

Ernie NeffCitrus

Citrus fruit is susceptible to canker after it reaches three-eighths of an inch in diameter, University of Florida Institute of Food and Agricultural Sciences Extension pathologist Megan Dewdney told growers this winter. “Once you get to that point and we get rain, then all bets are off as to whether you will keep canker out,” Dewdney said at a winter …

What You Need to Know About Citrus Fertigation

Tacy CalliesIrrigation, Nutrition

By Mongi Zekri, Davie Kadyampakeni, Tripti Vashisth, Kelly Morgan, Tom Obreza and Brian Boman Microirrigation is an important component of citrus production systems in Florida. For citrus trees, microirrigation is more desirable than other irrigation methods for several reasons: water conservation, fertilizer management efficiency and freeze protection. Research has shown that when properly managed, water savings with microirrigation systems can …

Citrus Growers Needed for Survey Participation

Tacy CalliesEconomics

Ariel Singerman, University of Florida assistant professor, will be conducting his annual production cost survey for processed oranges grown in Southwest Florida. The survey will consist of grower meetings in two locations. The first meeting will take place on May 18 at 9:00 a.m. at the Hendry County Extension Office (Dallas Townsend Ag Center) in LaBelle. To confirm your participation in …

Current Considerations for Citrus Irrigation Management

Tacy CalliesIrrigation

Growers can use these tips and tools for trees impacted by HLB and Hurricane Irma. By Davie Kadyampakeni, Kelly Morgan, Mongi Zekri, Rhuanito Ferrarezi, Arnold Schumann and Thomas A. Obreza Water is a limiting factor in Florida citrus production during the majority of the year. This is because of the low water-holding capacity of sandy soils resulting from low clay …

morgan

Nutrition and HLB

Ernie NeffHLB Management, Nutrition

University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) professor Kelly Morgan discusses the importance of nutrient leaf concentrations in HLB-infected citrus trees. “The leaf concentration (of nutrients) is reduced in all HLB trees,” he says. “We’ve known that for a long time, since HLB was found in Florida.” Morgan, who works at the Southwest Florida Research and Education …

irrigation

Water and Nutrient Tips for HLB

Ernie NeffHLB Management, Irrigation, Nutrition

  University of Florida Institute of Food and Agricultural Sciences researcher Davie Kadyampakeni offers water and nutrient management tips for HLB-affected trees. He was a presenter at a recent citrus nutrient management seminar in Immokalee hosted by multi-county citrus Extension agent Mongi Zekri. The seminar drew approximately 60 people to the Southwest Florida Research and Education Center. Kadyampakeni’s tips include …

dorian

Hurricane Irma Damage Report from Gulf Citrus Growers

Tacy CalliesCitrus

Ron Hamel, Gulf Citrus Growers Association executive vice president, says it has been difficult to reach area growers in the aftermath of Hurricane Irma due to the lack of power. At this point, he says, people are busy assessing the damage to the citrus crop and trying to get standing water out of groves. Hamel says Collier and Hendry county …

hurricane irma

Citrus Growers Preparing for Hurricane Irma

Daniel CooperCitrus, Weather

Unfortunately, Florida citrus growers are having to prepare for Hurricane Irma, which at this point looks like it will impact the Sunshine State. Mongi Zekri, the multi-county citrus agent in the Hendry County Extension office in LaBelle, says this is especially troubling with harvest just around the corner. Hear more: Read a recent Citrus Industry magazine article by Mongi Zekri, …

rootstock

Biostimulants Have Positive Effects

Ernie NeffBiostimulants

University of Florida/Institute of Food and Agricultural Sciences (UF/IFAS) plant physiologist Ute Albrecht described the use of microbial amendments, specifically biostimulants, at a July 26 seminar in Immokalee. Albrecht works at the UF/IFAS Southwest Florida Research and Education Center, site of the seminar hosted by multi-county citrus Extension agent Mongi Zekri. “Biostimulants come in a wide range of different products” …

Preparing for and Recovering from a Hurricane

Tacy CalliesCitrus, Weather

By Mongi Zekri, Bob Rouse and Jonathan Crane Hurricane preparation for citrus growers this year is the same drill as every year. Each year, growers look forward to the rainy season to help their young trees grow fast and their mature trees produce good crops. This year, growers will be praying for good distribution of rains following a year of …

Sneak Peek: June 2017 Citrus Industry Magazine

Tacy CalliesCitrus, Sneak Peek

There is no doubt that the biggest risk Florida citrus growers currently face is HLB disease. But there are many other risks that can and should be managed effectively. University of Florida’s Ariel Singerman and Steve Futch provide risk management advice for growers in the June issue of Citrus Industry magazine. Their article offers practical information on production, market, financial, …

IPCs

Keys to Gulf Citrus Production

Ernie NeffHLB Management, Nutrition

Several Florida growers recently have said that groves in the Gulf citrus region of Southwest Florida are looking better than most groves in the state. Additionally, statistics indicate production in the Gulf region exceeds production in the state as a whole. Multi-county citrus Extension agent Mongi Zekri, who represents the Southwest/Gulf region, was recently asked why the Gulf was doing …

Research

What Growers Need to Know About BMPs Now

Ernie NeffCitrus, Water

Virtually all Florida citrus growers have signed up to participate in the Florida Department of Agriculture and Consumer Services’ (FDACS) best management practices (BMPs) for water quality and water quantity. “They’ve done an extremely good job over the last 20 years that we’ve had BMPs,” says University of Florida researcher Kelly Morgan, the statewide BMP coordinator. “The (state) water act …

Phil Stansly: Psyllid Slayer

Tacy CalliesCitrus, Citrus Health Management Areas, HLB Management, Pests

By Ernie Neff Gulf citrus growers had a CHMA (citrus health management area) before CHMAs were popular — even before they were called CHMAs! Phil Stansly, University of Florida (UF) entomology professor, is among those credited with organizing Florida’s first psyllid- and HLB-fighting CHMA. Others recognized for the achievement include Gulf Citrus Growers Association (GCGA), Florida Cooperative Extension Service and …

Freeze Damage Symptoms and Recovery for Citrus

Tacy CalliesFreeze Protection, Weather

By Mongi Zekri, Chris Oswalt, Steve Futch and Laurie Hurner The extent of cold injury to citrus depends on a number of factors, and its expression may occur over an extended period of time. Factors responsible for freeze damage include minimum temperature, duration of freezing temperatures and stage of tree acclimation. Susceptibility of trees to freezing temperatures can also be …

HLB, psyllids

HLB-Spreading Psyllids: Dormant Sprays and the Edge Effect

Ernie NeffCitrus Greening, HLB Management, Pests

University of Florida entomologist Phil Stansly discusses the use of dormant sprays for HLB-spreading psyllids. He also addresses the fact that psyllid populations are often higher on grove perimeters — the so-called “edge effect.” Stansly says the next coordinated grower spray for psyllids in the Gulf citrus-growing region will be a dormant spray. “The trees are dormant now and that’s …