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Below you'll see everything we could locate for your search of “rootstocks”
Laurie Hurner grew up in a fifth-generation Florida citrus-growing family, and she and her sisters worked their farm in Highlands County. “My parents had three daughters,” said Hurner, the director of University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Extension Highlands County and the county’s citrus agent. “We were all well-rounded.” From their mom, the girls learned what …
University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) plant physiologist Ute Albrecht discusses her research on citrus rootstocks. Albrecht points out that sour orange was the dominant rootstock in Florida several decades ago, until trees on the rootstock succumbed to citrus tristeza virus. “Now we have many other rootstocks that are beneficial for different reasons,” she says. Those …
After announcing at the August meeting of the Citrus Research and Development Foundation that the 2019–20 Florida Citrus Production Guide is now available, multi-county citrus Extension agent Chris Oswalt talked about tree and crop conditions. He summarizes his presentation in an interview. “After all the rainfall we’ve had, and we’ve had quite a bit of good rainfall this past month …
August’s All In For Citrus podcast includes some exciting updates from the recent Citrus Expo! First, Michael Rogers, director of the Citrus Research and Education Center, summarizes the good grower responses that the University of Florida Institute of Food and Agricultural Sciences( UF/IFAS) received about the seminar program at Citrus Expo. He discusses the new Hands-on Session that attracted a …
By Yiannis Ampatzidis Citrus growers face issues from an increasing number of pests and diseases. Rapid and accurate tools for early pest and disease detection are needed to improve precision and timely management. Almost all agrochemicals (e.g., pesticides) applied in specialty crop production are made uniformly with conventional spraying equipment, despite the fact that pathogen distribution is typically patchy. Uniform …
The late Orie Lee was renowned for his long and generous cooperation with University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) scientists conducting citrus research on his property. One of those researchers, plant breeder Jude Grosser, says the industry is now giving a little back to the Lee family. Grosser discusses 12 federally funded trials in which rootstocks …
By Amit Levy and Ozgur Batuman Citrus tristeza virus (CTV) is an important citrus pathogen that, in the past, had a dramatic effect on the citrus industry and caused the loss of almost 100 million trees worldwide. These trees were propagated on sour orange rootstock. The disease created a need for tristeza-tolerant rootstocks to sustain the citrus industry, because only …
By Stephen H. Futch and Ariel Singerman As home to three of the world’s major religions, Israel is one of the most diverse countries in the world. Besides its cultural diversity and historical importance, Israel is also a major citrus producer and exporter. Israel’s citrus industry began in 1882. As new immigrants moved to the country, they established many very …
Scientists from numerous countries attending the International Citrus Research Conference on HLB in March reported on studies of horticultural practices that might help growers cope with the disease. Tripti Vashisth, a horticulturist with the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS), summarized their observations at the recent Florida Citrus Growers’ Institute. She shares those observations in the …
University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) citrus breeders are working on both short-term and long-term rootstock solutions for HLB, Fred Gmitter said earlier this year. Gmitter and fellow UF/IFAS citrus breeder Jude Grosser have already identified numerous rootstocks that seem to offer tolerance to the disease. Tolerance would help growers in the short term. Gmitter says …
Gardinier Florida Citrus General Manager Lee Jones named two rootstocks that looked appealing at an April 25 Citrus Research and Development Foundation (CRDF) rootstock field day in Highlands County. “(US) 942 kind of stands out to me,” he said. “(US) 812 looks good,” he added. “What we’re learning as we’re going is we’ve got to spoon feed this (citrus trees) …
By Tripti Vashisth, Davie Kadyampakeni and Lushan Ghimire In the past few years, horticultural citrus grove management practices have changed significantly in Florida. It is a common observation across the state that huanglongbing (HLB)-affected trees respond well to complete and balanced nutrition programs. Therefore, citrus growers are currently focusing on intensive management of irrigation and nutrition. HLB-affected trees suffer a …
Researcher Rhuanito “Johnny” Ferrarezi recently discussed experiments on citrus varieties and citrus under protective screen (CUPS) in the Indian River area. Ferrarezi is a University of Florida Institute of Food and Agricultural Sciences assistant professor of citrus horticulture at the Indian River Research and Education Center (IRREC). One large trial Ferrarezi discussed will be of grapefruit, navel and mandarins on …
By Lorenzo Rossi, Ute Albrecht and Evan Johnson Citrus root systems are confronted with many challenges that limit resource availability needed for tree productivity. Challenges are compounded by huanglongbing (HLB), which now affects nearly all citrus trees throughout Florida’s production areas. Contrary to the above-ground portion of the tree, study of the below-ground portion is considerably more difficult. This article …
Citrus Research and Development Foundation (CRDF) President Larry Black discusses the organization’s potential role in large-scale field trials to demonstrate how citrus can be grown in the face of HLB. He also talks about a communication study showing how growers like to receive information about CRDF. The Citrus Research and Field Trial (CRAFT) program would be funded for approximately $8 …
By Larry Duncan Successive hard freezes in Florida in the late 1980s resulted in widespread replanting of citrus groves. Within a few years, many groves on the Central Ridge had discrete patches of poorly growing, chlorotic young trees amid patches of vigorously growing trees. Stubby root symptoms on the declining trees suggested damage by sting nematodes (Belonolaimus longicaudatus). This nematode …
By using drone technology, Florida citrus growers can find out how many trees live in their groves and, eventually, they may detect the health status of the trees, a new University of Florida study shows. Imaging from unmanned aerial vehicles (UAVs) can accurately detect and count citrus trees and spaces where trees have had to be removed in groves, said …
By Evan Johnson Diseases caused by phytophthora continually threaten Florida citrus production. Brown rot can directly reduce yields of early maturing varieties including Hamlin and grapefruit, can delay harvest of fresh market fruit until infected fruit have dropped, or risk packinghouse rejection of the load because it can spread post-harvest. Foot and crown rot can kill trees but are uncommon …
A horticultural research scientist with experience in the development of disease-free citrus rootstock and disease-tolerant citrus varieties in Iran’s northern agricultural region will now serve the Indian River District’s growers. Amir Rezazadeh recently began his new position as multicounty fruit and field crops agent for the University of Florida’s Institute of Food and Agricultural Sciences (UF/IFAS) Extension in Saint Lucie …
Florida grapefruit trees have taken a much harder hit from HLB, also known as greening disease, in recent years than orange trees have. Grapefruit production has plummeted drastically, and growers are desperately seeking ways to keep trees alive and productive. The fruit’s troubles have hit especially hard in the Indian River area, known worldwide for its grapefruit. Indian River Citrus …
