psyllid

Cut Psyllid Control Costs

Ernie NeffPsyllids

University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) entomologist Lukasz Stelinski suggested ways growers can cut psyllid control costs. He summarized key points he made in a talk at a Jan. 8 Citrus Insect Management Workshop at the Citrus Research and Education Center in Lake Alfred. Stelinski credited the late UF/IFAS entomologist Phil Stansly for determining that psyllid …

HLB Reduction Strategies

Tacy CalliesHLB Management

By Jawwad Qureshi, Lukasz Stelinski and Fernando Alferez Management of huanglongbing (HLB) has focused on reducing the vector Asian citrus psyllid (ACP) and improving tree health, thus requiring a multi-pronged approach. Several elements of an HLB management system are either available or under current investigation. Maintenance of clean nursery stock, vector management and tree nutrition are widely implemented, while incorporation …

morgan

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 …

daily irrigation

Daily Irrigation for HLB-Affected Trees

Ernie NeffCitrus, 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 …

citrus

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 …

agricultural engineer

Ag Engineer Joins UF Scientists to Restore Grapefruit Industry

Daniel CooperResearch, Water

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 …

growers

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. …

HLB, irrigation, nutrition

Nursery Production Guide Being Developed

Ernie Neffnursery

A Citrus Nursery Production Guide is expected to be published by the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) in five or six months. “We are going to cover the basics of nursery production,” said UF/IFAS researcher Rhuanito (Johnny) Ferrarezi. “Then we will help (with) selecting varieties. We will talk about … how to clean material, how …

production

Citrus Nutrition Day to Include Field Tours

Daniel CooperCitrus, Citrus Health Management Areas, Industry News Release, Nutrition, Research

This year’s Citrus Nutrition Day — at which growers will learn the latest data about growing the fruit, from the soil up through the plants — is expanding to include tours of field trials. After a morning of updates from University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researchers, participants may tour field sites at the Peace River …

Kaolin Clay May Be Viable Option to Protect Citrus Trees from ACP

Daniel CooperCitrus Greening, Industry News Release, Psyllids, Research

Florida citrus growers have begun taking notice of kaolin clay, a powdery white compound, because it can cause Asian citrus psyllids (ACP) to “not take notice” of their groves. Long used to protect other fruit and vegetable crops, kaolin can also conceal citrus trees from hungry psyllids by confusing their visual sensory system, said Michael Rogers, director of the Citrus …

production

High-Density Plantings Could Boost Profits for Florida Citrus Growers

Daniel CooperCitrus, Industry News Release

Florida citrus growers who plan to establish new groves might want to consider high-density planting, according to experts with the Citrus Research and Education Center (CREC) in Lake Alfred, part of the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS). Wider spacing between trees and rows was common decades ago but, with yields down and input costs up, …

Research Update: Citrus Under Protective Screen

Tacy CalliesCUPS

By Arnold Schumann, Timothy Ebert, Laura Waldo, Danny Holmes, Napoleon Mariner, Gary Test, Chris Oswalt, Rhuanito Ferrarezi and Ricardo Lesmes Two studies with citrus under protective screen (CUPS) were established at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Citrus Research and Education Center (CREC) and Indian River Research and Education Center (IRREC) in 2013–14. The goal …

Increasing Yield Through High-Density Plantings

Tacy Calliesplanting

By Rhuanito Ferrarezi, Alan Wright and Arnold Schumann High-density plantings have been tested worldwide in advanced citrus production systems (ACPS) to increase efficiency of water, fertilizer and light, and to maximize yield per area. After the onset of huanglongbing (HLB) in Florida, canopy growth reduced drastically due to negative impacts on plant health, creating the need for new plant spacing …

CUPS

Grower Optimistic About Citrus Under Protective Screen

Ernie NeffCUPS

Jerry Mixon of KLM Farms hosted about 40 growers, researchers and others at his citrus under protective screen (CUPS) facility in Alturas on Nov. 15. Alturas is between Bartow and Lake Wales in Polk County, Florida. At the field day, Mixon discussed his experience with the growing system and his expectations for it. He has 30 acres under screen that …

nutrition

Some Basics of Good Citrus Nutrition

Ernie NeffNutrition

Studies indicate that constant nutrition supplied by controlled-release fertilizer improves citrus yield and fruit quality, says University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) horticulturist Tripti Vashisth. According to Vashisth, studies also show that increased applications of manganese and boron improve fruit quality. “We are seeing improvement when we are increasing the rate of manganese and boron about …

Components of a Healthy Citrus Soil

Tacy CalliesSoil Improvement

By Sarah Strauss and Ute Albrecht There is increasing discussion and interest in soil health from both growers and researchers. Soil health is generally synonymous with soil quality. It can impact not just sustainability, but also improve water-holding capacity, nutrient availability, yield and overall grove productivity. In citrus, soil health is particularly important because of the reduction of root mass …

citrus

Citrus Advisory System May Help Prevent PFD Losses

Daniel CooperCitrus, Research

A new University of Florida-developed forecasting system could help citrus growers control postbloom fruit drop this winter, despite the predicted El Niño weather pattern that’s expected to bring more rain and moderate temperatures. With an El Niño, forecasters expect above-average rain this winter and early spring. Increased rain improves the chances of fungal spores splashing from flower to flower in …

citrus forecast

USDA Grant Could Help Florida’s Grapefruit Industry

Daniel CooperCitrus Greening, Grapefruit, HLB Management, Industry News Release

Florida’s grapefruit industry, devastated by citrus greening, may find hope in four ½-acre white-mesh screenhouses in a research field in Fort Pierce. The project will be funded by a $3.5 million grant from the U.S. Department of Agriculture (USDA) awarded to the University of Florida. Studies for the grant will take place inside and outside these structures, where 512 young …

laser

Laser Technology May Be Key to Rehabilitating HLB Trees

Daniel CooperCitrus, Citrus Greening, HLB Management, Research, Technology

A University of Florida (UF) scientist hopes to improve on laser technology to enhance the efficiency of spray solutions aimed at restoring vitality to greening-affected citrus trees and reducing amounts of chemicals applied. With the updated technology, a laser shoots infra-red energy pulses at citrus tree leaves, said Ed Etxeberria, a professor of horticultural sciences at the UF Institute of …

psyllid

Attract-and-Kill Device Being Developed for Psyllids

Ernie NeffPsyllids

Numerous researchers have collaborated on an attract-and-kill device that will hopefully eliminate psyllids in confined spaces, such as nurseries and citrus under protective screen (CUPS). University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) entomologist Lukasz Stelinski reports on a presentation he made Oct. 25 at a citrus nursery workshop in Lake Alfred. Stelinski says researchers with UF/IFAS and …