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 …

CRAFT program

Young Citrus Trees May Benefit from Full Irrigation

Daniel CooperCitrus, Citrus Greening, HLB Management, Industry News Release, Irrigation, Research

Mature citrus trees affected by the bacterial disease huanglongbing (HLB) typically need about 25 percent less irrigation than their healthy counterparts However, that doesn’t necessarily mean young trees with the disease will benefit from water deficits, according to a preliminary greenhouse study by researchers with the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS). Experiments on 1-year-old orange …

Effects of Homobrassinolides on HLB-Affected Trees in Florida

Tacy CalliesHLB Management, Research

By Fernando Alferez, Christopher Vincent and Tripti Vashisth In the current scenario of widespread infection and severe symptoms of HLB in Florida, horticultural practices that improve plant health in the presence of the disease are needed. For this reason, we sought to follow up on reports of positive effects of a brassinosteroid on infected plants. Brassinosteroids are a relatively newly …

citrus

Citrus Tree Covers Keep Deadly Psyllids Away

Daniel CooperCitrus Greening, HLB Management, Research

University of Florida (UF) scientists are finding that by covering new citrus trees with mesh, they can keep disease-carrying insects from harming the plants. That could be a big step toward stemming the deadly citrus greening disease, UF Institute of Food and Agricultural Sciences (IFAS) researchers say. Asian citrus psyllids can infect the citrus trees with greening, also known as …

Revamping Communication with Citrus Growers

Abbey TaylorCitrus, Citrus Greening

Florida citrus growers now have a one-stop shop for everything citrus research coming out of the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS). A new website, monthly enewsletter and monthly podcast were announced by UF/IFAS last month during Citrus Expo. Jack Payne, senior vice president for agriculture and natural resources with UF, says this “All In for …

citrus

CUPS Protects Citrus from HLB and Storms

Daniel CooperCitrus Greening, CUPS, Research

A system designed to protect citrus trees from the deadly greening disease withstood the ravaging winds of Hurricane Irma last year, University of Florida scientists say. With reinforcements installed after the storm, they’ll likely withstand even more dangerous storms. Using citrus under protective screening (CUPS), growers can keep the Asian citrus psyllids away from their trees, said Arnold Schumann, a …

new york times

Could HLB-Tolerant Mandarins Be Used in Florida Orange Juice?

Tacy CalliesResearch

By Laura Reuss, Fred Gmitter and Yu Wang Sweet orange and mandarin fruits are the most popular citrus crops worldwide. Although often mistakenly considered one and the same, oranges and mandarins are different species with specific distinctions. For instance, mandarins are smaller and easier to peel than oranges. Additionally, mandarins are primarily eaten as fresh fruit, whereas most sweet oranges …

Why Citrus Growers Should Keep Spraying for Psyllids

Ernie NeffHLB Management, Psyllids

For several years after HLB was detected in Florida in 2005, most citrus growers and researchers agreed that it was essential to spray aggressively for the Asian citrus psyllids that spread the disease. In recent years, however, many growers have questioned whether it still makes sense to spray for psyllids when 100 percent of groves are infected, as is the …

All In For Citrus Podcast

About The Podcast The University of Florida Institute of Food and Agricultural Sciences and Southeast AgNet are partnering to provide the latest news on citrus-related research in a monthly podcast. The podcast, “All in for Citrus,” features short interviews with scientists working to find solutions to citrus greening and other devastating citrus diseases. “This is the latest tactic in a …

podcast

New Monthly Podcast for Citrus Growers

Daniel CooperCitrus, Industry News Release, Research

The University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) and Southeast AgNet are partnering to provide the latest news on citrus-related research in a monthly podcast. The podcast, “All in for Citrus,” will launch the last week in September and will feature short interviews with scientists working to find solutions to citrus greening and other devastating citrus diseases. …

psyllids

Combating Citrus Greening with Fungus

Tacy CalliesCitrus Greening

By Breanna Kendrick The University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) is testing an insect-killing fungus to combat the Asian citrus psyllid (ACP). Pasco Avery, biological scientist at the UF/IFAS Indian River Research and Education Center in Fort Pierce, is researching the use of fungus-oil sprays and assessing the effects on ACP, the insect that transmits the …

How to Handle Glyphosate-Related Fruit Drop

Tacy Calliesweeds

By Ramdas Kanissery, Fernando Alferez and Ozgur Batuman Herbicides are one of the key inputs necessary for effective management of a wide diversity of weed infestations in citrus crop production. Most weeds in citrus could be controlled by adopting a weed management program that utilizes a combination of herbicides based on their selectivity and compatibility with the crop. This would …

Citrus Expo Presentations Now Available

Abbey TaylorCitrus Expo

The 27th annual Citrus Expo saw great success as growers piled into the Lee Civic Center on Aug. 15–16 in North Fort Myers, Florida. Growers experienced the biggest trade show in Citrus Expo history, as well as extended citrus seminar sessions. The educational program, titled “Planting Tomorrow’s Profits,” featured presentations on the latest research from the University of Florida Institute …

grapefruit

Experts Suggest Varieties for Irma-Damaged Citrus Replanting

Daniel CooperIndustry News Release, Rootstocks, Scions, Varieties

As growers decide how to use U.S. Department of Agriculture (USDA) funding to recover from damages caused by Hurricane Irma — and as they cope with the ongoing impact of citrus greening — University of Florida researchers are suggesting varieties for them to replant. Producers can grow varieties that show tolerance to greening — also known as huanglongbing, or HLB. …

psyllids

Control of Citrus Flush Timing Could Improve Psyllid Control

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

They say timing is everything in life, and that’s certainly true of the Asian citrus psyllid, which has devastated Florida agriculture for the past decade by transmitting citrus greening disease, also known as huanglongbing or HLB. To reproduce, this small, flying insect must lay eggs on citrus “flush” – the tender new leaves and shoots that citrus trees produce several …