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Below you'll see everything we could locate for your search of “soil testing”
By Jude Grosser, Fred Gmitter and Kim Bowman Two citrus breeding programs have identified several rootstocks that can currently be planted with confidence when combined with appropriate scions, including mid- and late-season oranges, and grown with emerging enhanced nutrition programs. These citrus breeding programs are at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Citrus Research and Education …
University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researchers have discovered another possible solution to the plague of citrus greening that is impacting Florida’s citrus groves. This new information adds to the growing portfolio of knowledge that UF/IFAS scientists are amassing to fight the disease. Led by UF/IFAS microbiology and cell science professor Claudio Gonzalez, a team of plant …
As most growers in the Sunshine State know, weed management can be difficult in Florida’s climates. “When you think about Florida citrus production, weeds flourish in citrus tree lines and tree rows because there is a constant supply of moisture and nutrients,” said Ramdas Kanissery, University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) weed science assistant professor. “So …
By Laura Waldo and Arnold Schumann It has been the accepted belief for many years that citrus varieties and rootstocks do not develop root hairs. However, research has shown that root hair growth can be stimulated when soil phosphorus (P) concentrations are extremely low. It is possible that in Florida, citrus roots could fail to produce root hairs due to …
One of Lauren Diepenbrock’s props at a Jan. 14 OJ break at the Citrus Research and Education Center was a paper plate bearing the message “Easy diagnostic: smashed lebbeck mealybug = purple guts.” Diepenbrock, a University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) entomologist, explains the meaning of the plate’s message. UF/IFAS researcher Lance Osborne found a lebbeck …
The fate of pesticides By Juanita Popenoe 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. I have had several problems brought to me recently that were caused by pesticide residues in …
Newly planted trees need to have root systems that are as established, robust and healthy as possible before contracting HLB, Evan Johnson told growers at Citrus Expo. That’s because HLB takes out a tree’s fibrous root system and causes dieback of the structural root system. Having strong root systems from the start will increase the productive life of trees, the …
By Ramdas Kanissery and Yiannis Ampatzidis Weeds are a significant problem in horticultural production and must be controlled to maintain good crop yield. Concerns related to non-judicious use of herbicides, which include ground and surface water contamination and pesticide residues in food, has sparked public awareness and restrictions on herbicide use. For these reasons, alternative and integrated systems for weed …
Florida’s citrus growers can soon get additional help in managing citrus greening through the newly developed University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Citrus Nutrition Program. The basis for the program is to improve the overall health and productivity of citrus groves affected by citrus greening disease by refining production practices; in particular, adjusting fertilization programs. Growers …
The Citrus Research and Field Trial Foundation Inc. (CRAFT Foundation) board of directors, technical working group (TWG), staff and a legion of volunteers have been working at top speed throughout the summer finalizing the formation, organization and funding of the CRAFT program. The first priority for the CRAFT Foundation staff and board of directors has been securing all available funding …
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 growers discuss production practices to improve root health. By Tacy Callies What began as an experiment in Ben Krupski’s 10-acre grove in Howey-in-the-Hills, Florida, is now a common practice he uses as production manager for Lennon Grove Service. Four years ago, Krupski started testing the use of compost in his small leased block of Hamlin trees. In the first …
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 …
University of Florida Institute of Food and Agricultural Sciences researcher Tripti Vashisth told growers at a citrus workshop in Sebring on Sept. 25 how to maintain proper soil pH for HLB-infected trees. She said HLB-affected trees seem to perform best when soil pH is 6.0. Vashisth said pH levels need to be adjusted continuously. “Our soils are known to be more …
From nutritional supplements to managing irrigation to grower outreach and education, University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researchers are finding additional ways to support Florida citrus growers in their fight against citrus greening disease. Twelve projects were funded by the state legislature-funded Citrus Initiative program in 2017-2018 that looked at possible short- and long-term solutions that …
By Len Wilcox Continuous research and development of new varieties is an important function of the University of California, Riverside (UCR). Efforts have led to hundreds of profitable varieties now being grown in California. According to a report in California Agriculture, University of California’s (UC) research journal, one of those varieties has been a source of more than $14 million …
By Len Wilcox California’s consistent sunshine makes for long growing seasons and allows tremendous varieties of foods to be grown, but it isn’t a perfect environment. Chronic water shortages create challenges for everything except cactus grown for tequila or jelly — but not many growers specialize in that. The rest of them, including citrus growers, have to deal with water …
By Rhuanito S. Ferrarezi, Alan L. Wright, Kelly T. Morgan, Philip A. Stansly, Monica Ozores-Hampton and Robert Ebel Huanglongbing (HLB) or citrus greening is endemic in Florida, resulting in billions of dollars of losses since the state’s first detection in 2005. The disease induces visual symptoms in leaves and branches, while severely impacting citrus fruit yield and quality. Fibrous root …
By: Brad Buck, 352-294-3303, bradbuck@ufl.edu GAINESVILLE, Fla. — Grapefruit grows better under screen houses than in unprotected groves because the indoor facilities keep out the insect that causes citrus greening, new University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) research shows. Protecting citrus from greening is essential, UF/IFAS researchers say. The disease, first detected in Florida in 2004, …
By Kevin M. Folta A number of websites recently made claims about detection of the herbicide glyphosate in orange juice from several leading brands1-3. It is important to understand the claims, who is making them, and how to communicate the actual risk, which the science says approaches zero. WHAT IS THE CLAIM? Moms Across America (MAM) claims that it has …
