Resolved to Give Growers What They Need

Josh McGillFlorida, Research

By Michael Rogers January marks the season for resolutions: exercising more, eating well and being more organized. But in the research world, resolutions may not be that simple. I don’t think that University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researchers could be any more “resolved” in finding ways to fight citrus diseases and ways to improve how …

Gibberellic Acid Application on Hamlin Appears Promising

Josh McGillResearch

By Tripti Vashisth In a multi-year field trial, University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researchers have seen beneficial effects of gibberellic acid (GA) on Valencia sweet oranges. Monthly application of GA (September to January) on Valencia improved yield on average by 30%, reduced fruit drop and elicited enhanced plant defense response. These benefits are possibly due …

Florida Growers Report Early-Season Obstacles

Josh McGillProduction

By Frank Giles The U.S. Department of Agriculture (USDA) reported a drop in estimated Florida orange production in its December crop update. That estimate lowered production by 1 million boxes from the initial forecast of 47 million boxes reported in October. In advance of USDA’s January estimate, Florida citrus growers discussed how their crops are progressing. Here’s what they had …

hlb

How Fast is CLas? Scientists Now Know

Ernie NeffDiseases, Research

For the first time, scientists have been able to measure the speed of the Candidatus Liberibacter asiaticus (CLas) bacteria that causes HLB disease. CLas are injected into citrus trees by psyllids feeding on the trees’ sap. CLas relies on this sap to grow and spread throughout trees.    Using a new statistical modeling analysis and measurement approach, plant pathologists were …

Florida Grower Citrus Show Agenda Set

Ernie NeffAll In For Citrus Podcast, Events

Researchers Mark Ritenour and Sandra Guzmán with the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) outline the agenda for the Florida Grower Citrus Show on Jan. 26-27 in Fort Pierce. Ritenour and Guzmán, both of the UF/IFAS Indian River Research and Education Center, will be presenters at the show. Ritenour will discuss maximum residue tolerances for fruit …

Making Sense of Biologicals: An Alternative to Managing Premature Fruit Drop

Tacy CalliesMSOB

One instance of fruit drop is expected and needed every growing season for Florida citrus producers. A second instance, however, is unexpected, unwanted and just what growers do not need right before harvest time. HLB WORSENS DROPBut that is a scenario Florida citrus growers encounter every year. This problem has only worsened in the era of citrus greening disease, also …

Three Florida Citrus Pests of Concern

Ernie NeffPests

Lebbeck mealybug, the Bulimulus sporadicus snail and Brevipalpus mite are Florida citrus pests that were discussed at Citrus Expo in August. University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) entomologist Lukasz Stelinski delivered information about the three pests for fellow UF/IFAS entomologist Lauren Diepenbrock. LEBBECK MEALYBUGLebbeck mealybug damages fruit, leaves and stems. The pest causes fruit drop and …

Shining the Light on Tree Health

Tacy CalliesResearch

At a University of Florida Institute of Food and Agricultural Sciences Extension citrus field day held earlier this month, plant pathologist Amit Levy talked with growers about ways to evaluate tree health. “A good evaluation should be correlated to the yield that the trees will produce,” explained Levy. “The evaluation should be concentrated on the tree health, and not on …

Nutrition Findings for Florida Citrus

Ernie NeffNutrition

Florida’s Citrus Nutrition Box Program that began in the fall of 2019 has shown that regional differences occur around the state with secondary macronutrients and micronutrients. It also showed that manganese and zinc are a concern for almost all areas. Jamie Burrow presented those findings, and numerous others, as part of Citrus Nutrition Day in October at the University of …

Gibberellic Acid Label Concerns Allayed

Ernie NeffAll In For Citrus Podcast, HLB Management

University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researchers have found that gibberellic acid (GA) applications can improve productivity of HLB-affected Valencia trees. But some growers are concerned that the GA label may not allow that use. Citrus Research and Education Center Director (CREC) Michael Rogers allays that concern. Rogers says some are concerned “because the recommendations that …

The Case for Sugar Belle® in OJ

Ernie NeffOrange Juice

A pitch for potentially using the HLB-tolerant Sugar Belle® mandarin hybrid in orange juice (OJ) has been made by University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researchers. A brief presentation titled, “Potential of Using HLB-Tolerant Sugar Belle® in Orange Juice Processing and Effects on Consumer Preference,” is available for viewing. Slides in the presentation indicate that a …

Now Is the Time for Dormant Season Sprays

Tacy CalliesPsyllids, Tip of the Week

By Lauren Diepenbrock Pest management is an ongoing effort in Florida citrus. Taking advantage of pest life cycles, whether they are tied to the season or plant phenology, can make management efforts have greater impacts on pest populations. For many citrus growers, managing impacts of Asian citrus psyllid (ACP), the vector of huanglongbing (HLB), is part of the annual management …

Australia Launches New Citrus Biosecurity Program

Ernie NeffDiseases, Pests

In recognition of biosecurity threats such as HLB, a new five-year biosecurity program, CitrusWatch, has been launched in Australia. This program is funded by Hort Innovation through the citrus R&D levy and by Plant Health Australia (PHA) using the citrus plant health levy. The program is led by PHA, with Citrus Australia coordinating program activities. The Northern Territory Department of Industry Tourism …

Incorporating Newer Tools in Resets

Tacy CalliesProduction

By Lauren M. Diepenbrock Maintaining a productive citrus grove in Florida takes a lot of effort and innovation these days. So much so that growers’ needs can outpace the timeline of the researchers who support this industry. As such, growers often move forward with promising ideas or tools before researchers can provide useful recommendations toward successfully incorporating these tools. The …

New Home Page

July 19, 2024South Africa’s Orange and OJ ProductionJuly 19, 2024Finger Lime Research ResultsJuly 18, 2024Partnership for Safer Pesticide Use in GeorgiaSearchSearch Tip of The WeekJul. 16, 2024Chlorpyrifos Update for GrowersJul. 09, 2024Reduce Fruit Drop From Phytophthora-Induced Brown RotJul. 02, 2024ACP Management in High-Density Plantings Sponsored Content Apr / 20245 Facts About Fire Ants and How to Control ThemApr / 2024BRAZILIAN …

Field Day to Feature GA and Nutrition Trials

Ernie NeffNutrition

Growers will have the opportunity to learn more about recent citrus research trials on nutrition and gibberellic acid (GA) and their impact on tree health. University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Extension Polk County will host a field day on Dec. 14 to share research findings with growers. The field tours will begin with an overview …

Scout for Problems, Even in CUPS

Ernie NeffCUPS, Pests

Growers should monitor for pests and diseases, even in the citrus under protective screen (CUPS) systems designed to keep HLB-spreading psyllids out of trees, according to entomologist Jawwad Qureshi. He told more than 25 people participating in a Dec. 1 virtual seminar that CUPS “are not foolproof systems,” and said citrus can’t be grown successfully without pest management. Qureshi works …

citrus forecast

Florida Citrus Packers: Fix Grapefruit Import Action Now

Ernie NeffExport/Import, Grapefruit

Florida Citrus Packers recently called for a fix to a so-called “patch” by the U.S. Department of Agriculture (USDA) that allegedly creates unfair advantages for Mexico and other countries over domestic grapefruit producers. Citrus Industry previously reported that the agriculture commissioners for Florida and Texas wrote letters protesting the USDA action.   Florida Citrus Packers Executive Vice President Peter Chaires …

nutrition

BMPs Addressed in Bill

Ernie NeffBMPs

Florida Sen. Ben Albritton filed a bill (SB 1000) to address issues related to best management practices (BMPs), the Nov. 19 Florida Citrus Mutual Triangle newsletter reported. According to the Triangle, the bill addresses several issues stemming from outdated science supporting University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) nutrient recommendation rates pertaining to BMPs. The bill also …

Sneak Peek: December 2021 Citrus Industry

Tacy CalliesSneak Peek

Everyone seems to get busier during December as the holidays near. With the harvest season in full swing, this is especially true in the Florida citrus industry. Amidst the rush to complete holiday preparations and tend to never-ending grove tasks, it’s a good idea to pause for a moment to consider farm safety issues. The December issue of Citrus Industry …