Tip of the Week

Feb / 2024Update on Chlorpyrifos UseFeb / 2024Tips for Trunk Injection of OxytetracyclineFeb / 2024PGRs: Multipurpose Tools for Citrus ImprovementJan / 2024How to Enhance Pre-emergent Herbicide PerformanceJan / 2024Planning Pointers for Insect ManagementJan / 2024Irrigation Strategy to Enhance Fruit Growth and RetentionJan / 2024HLB-Affected Trees Use Less WaterJan / 2024Mulch Suppresses Psyllids in Young Trees Dec / 2023A Tool to Help Assess …

oxytetracycline

Tips for Trunk Injection of Oxytetracycline

Daniel Cooper HLB Management, Tip of the Week

By Ute Albrecht and Ozgur Batuman Follow these important tips for proper trunk injection of oxytetracycline as a citrus therapeutic. APPLICATION TIMING INJECTION TECHNIQUE ADDITIONAL ADVICE Ute Albrecht (ualbrecht@ufl.edu) and Ozgur Batuman (obatuman@ufl.edu) are associate professors at the University of Florida Institute of Food and Agricultural Sciences Southwest Florida Research and Education Center in Immokalee. Sponsored ContentProtect Your Groves From …

pgrs

PGRs: Multipurpose Tools for Citrus Improvement

Daniel Cooper PGRs, Tip of the Week

By Tripti Vashisth Canopy health of HLB-affected citrus has been directly related to disease severity, fruit drop and overall fruit production. Some success has been found with the use of certain plant growth regulators (PGRs) such as gibberellic acid (GA) and 2,4-dichlorophenoxyacetic acid (2,4-D) to achieve healthier trees with reduced fruit drop and increased production. HLB MANAGEMENT Application of these …

Recovery Will Require a Multipronged Management Program

Josh McGill HLB Management, hurricane, Production

By Michael Rogers The 2022–23 Florida harvest season is now behind us. Yield losses magnified by the weather events this past season position the next couple of years as “make or break” for many growers. The lingering effects of hurricane Ian will impact next season’s crop as trees continue to recover and balance out canopy regrowth with fruit production. Despite …

Scouting Tips for Finding Asian Citrus Psyllids

Len Wilcox California Corner, Psyllids

A presentation at the recent Citrus Pest & Disease Prevention Committee State of the Central Valley meeting in California highlighted the importance of scouting for Asian citrus psyllids (ACP) in groves. Scouting becomes even more critical as the risk of ACP and HLB, the disease the insect transmits to trees, rises. The presenter, University of California (UC) Riverside Extension Specialist …

Thrips Management Tips

Tacy Callies Pests, Tip of the Week

As Florida growers prepare for the spring bloom, it is time to think about a pest that thrives on citrus flowers: thrips. Most notably, flower thrips are known to cause damage to developing flowers in sweet orange. Feeding damage can range from negligible to causing abortion of the flower or developing fruitlet. This pest is particularly challenging because it migrates …

Combined Treatment Reduced Drop and Increased Size

Josh McGill Fruit Drop, HLB Management, Production

A combination of gibberellic acid (GA) and 2,4-D reduced preharvest fruit drop by 18% and improved fruit size but produced no statistical effect on yield, researcher Tripti Vashisth reported Aug. 30. The combination “seems promising,” the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) horticulturist stated. The report was based on first year results from a trial of …

‘Irma Will Haunt Us’ Regarding Citrus Black Spot

Josh McGill Citrus, Diseases, Weather

Citrus black spot (CBS) disease has only been found in five Southwest Florida counties, but that could change as a result of 2017’s Hurricane Irma, a researcher reiterated recently. University of Florida Institute of Food and Agricultural Sciences plant pathologist Megan Dewdney, in a Feb. 24 presentation, said “Irma will haunt us for a while.” She explained that Irma likely …

Be Prepared for Postbloom Fruit Drop

Josh McGill Fruit Drop, Research

A La Niña weather pattern is most likely this spring, with higher-than-average temperatures and below-average rain predicted in Florida, researcher Megan Dewdney reported in a Feb. 24 presentation about postbloom fruit drop (PFD). That could have some influence on the severity of PFD, since its preferred climate is humid and subtropical, and the fungus moves with rain splash and wind-borne …

Freeze Damage: Preparation and Recovery

Josh McGill Tip of the Week

By Amir Rezazadeh Low temperatures can cause serious injury to leaf, wood and fruits of citrus trees. An extended freeze can kill a citrus tree. A rapid temperature decrease or a longer duration of freezing temperature can worsen the damage. Because preparation is paramount in protecting citrus trees, growers should use the Florida Automated Weather Network. The network provides information …

New Home Page

February 20, 2024Top Tailgater To Be Named at Florida Citrus ShowFebruary 20, 2024All In For Citrus Podcast, February 2024February 20, 2024Endangered Species Act To Be Addressed at Florida Citrus ShowSearchSearch Tip of The WeekFeb. 20, 2024Update on Chlorpyrifos UseFeb. 13, 2024Tips for Trunk Injection of OxytetracyclineFeb. 06, 2024PGRs: Multipurpose Tools for Citrus Improvement Sponsored Content May / 2023Protect Your Groves …

Protect Against the COVID-19 Delta Variant

Tacy Callies COVID-19, Tip of the Week

By Ben Chapman, Taylor O’Bannon, Matt Krug and Michelle Danyluk If you would have asked us last September if there would still be a need to write a tip about COVID-19 a year later, our answer would have been, “We sure hope not.” So, what’s changed? The simplest explanation is the emergence of the Delta variant. When you hear us …

Landscape Fabric Blocks Diaprepes Larvae

Ernie Neff Pests

Fabric mulch landscape covers, typically used to block weeds in nurseries, can aid in diaprepes root weevil control, Larry Duncan reported at the recent Citrus Expo. “Some of these products, not all of them, are extremely effective at blocking the diaprepes weevil larvae from getting into the soil” after falling from a citrus tree, Duncan said. Duncan is a University …

podcast

Research ‘of Use to Growers Right Now’

Ernie Neff Research

“We’ve come a long way in the time that we’ve had HLB here in Florida,” says Michael Rogers. The director of the University of Florida Institute of Food and Agricultural Sciences’ (UF/IFAS) Citrus Research and Education Center says early HLB research “covered a wide range of topics.” Now, however, “We’re really narrowing down things that are of use to growers …

All In For Citrus Podcast, April 2021

Taylor Hillman All In For Citrus Podcast, Sponsored Content

A whole-systems approach to one University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) research project is the focus of the April All in For Citrus podcast. Citrus Research and Education Center Director Michael Rogers said the project is a good example of citrus researchers taking a more comprehensive look at problems in the industry. “We’re starting to put …

Managing COVID-19 Risks in the Citrus Industry

Tacy Callies COVID-19

By Joyjit Saha, Matthew Krug and Michelle D. Danyluk The COVID-19 pandemic has rapidly changed so much. SARS-CoV-2 (the virus that causes COVID-19) is primarily transmitted person-to-person, with no evidence it is transmitted by food or food packaging, including citrus and citrus products. Managing COVID-19 among workers is extremely important. COVID-19 impacts on the health of employees can have catastrophic …

chlorpyrifos

Update on Chlorpyrifos Use

Daniel Cooper Pesticides, Regulation, Tip of the Week

By Brett Bultemeier, Mike Aerts and Lauren Diepenbrock On Dec. 28, 2023, the U.S. Court of Appeals for the Eighth Circuit revoked a previous decision related to chlorpyrifos tolerances for food. Chlorpyrifos is a broad-spectrum insecticide used in a variety of crops, including citrus. The original decision revoked all food tolerances, whereas this new ruling essentially reinstates them. This means …

Scouting Tools and Tactics

Tacy Callies CEU

By Matt Smith Editor’s note: This article grants one continuing education unit (CEU) in the Core category toward the renewal of a Florida Department of Agriculture and Consumer Services restricted-use pesticide license when the accompanying test is submitted and approved. This article is an updated version of a previous article, “Scouting: The Tip of the IPM Spear,” published in the …

How to Enhance Pre-emergent Herbicide Performance

Daniel Cooper Tip of the Week, weeds

By Ramdas Kanissery and Robert Riefer Pre-emergent herbicides, also known as residual herbicides, are highly effective in the long-term suppression of weeds in citrus tree rows. These herbicides remain in the soil and prevent susceptible weeds from germinating. In order to achieve the best weed control results, pre-emergent herbicides need to stay within approximately the top 5 inches of soil, …

Planning Pointers for Insect Management

Tacy Callies Pests, Tip of the Week

By Lauren Diepenbrock Insect and mite management is a year-round challenge in Florida citrus. With the warm climate, pests are at the ready as soon as plant resources are available to them. With knowledge of insect and mite biology in relation to tree phenology, plans can be developed to protect fruit and maintain productive citrus trees. Populations of some highly …