soil

Fast, Inexpensive Soil pH Testing

Ernie Neffsoil

Multi-county citrus Extension agent Chris Oswalt took several baggies of soil to an OJ break he hosted Jan. 14 at the Citrus Research and Education Center. He inserted a handheld pH meter into the soil in one of the baggies and within seconds told watching growers the content’s pH level. “Soil pH is real important, especially with HLB-infected trees today,” …

soil sampling

Soil Sampling Is Key to Cold-Hardy Citrus Fertilization

Daniel CooperCold Hardy, Nutrition

Soil sampling is one of two keys to building a good citrus fertilization program in North Florida and South Georgia, University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researchers wrote recently. The authors are Muhammad A. Shahid, assistant professor of horticulture, and postdoc scholar Shahid Iqbal, both with the North Florida Research and Education Center. Shahid and Iqbal …

leaf tissue

Now Is the Time for Soil and Leaf Sampling

Daniel CooperBMPs, Nutrition

July to September is the optimum time to collect citrus soil and leaf samples for analysis. Soil and leaf sampling are key components in the evaluation of a citrus nutrition program and required Citrus Best Management Practices recordkeeping documentation. Annual sampling and its analysis provide a good idea of the nutritional trends that have been occurring within specific grove blocks …

commercial

University of Georgia Lab Offers HLB Testing

Daniel CooperGeorgia, HLB Management

The University of Georgia’s (UGA) Plant Molecular Diagnostic Laboratory (MDL) on the Tifton campus is a U.S. Department of Agriculture-certified lab performing huanglongbing (HLB, also known as citrus greening) testing. It offers the advanced test to commercial growers, homeowners, nurseries, Extension and research personnel and the Georgia Department of Agriculture. The molecular test per sample costs $80. Candidatus Liberibacter species associated with HLB …

growing

Growing Citrus With Soil Health in Mind

Daniel CooperCover Crops, Georgia, Soil Health

Herb Young enjoyed a 40-year career in the agricultural chemical industry, starting as a technical service representative and eventually becoming a product manager. During those years, he worked on various specialty crops across the country. About 25 years of his career was spent in field research roles. So, experimentation with crops and growing practices comes naturally to Young. He has …

Seminar Speakers Share Latest Citrus Research

Josh McGillEducation, Events, Research

The citrus session at the Florida Grower Citrus Show started off with a special award acknowledgement by Ron Cave, director of the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Indian River Research and Education Center (IRREC). Cave recognized Pasco Avery for his induction into the 2022 class of the IPM Hall of Fame from the Southern IPM …

regenerative pilot

How to Liven Up Your Soil

Josh McGillAll In For Citrus Podcast, soil

How much life lives in a tiny bit of soil? A lot, according to Sarah Strauss, assistant professor at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS). “The estimate I often mention is there can be over a billion microorganisms in a gram of soil, which is about this size of a quarter,” she said during the …

An Update on Oak Mulch to Increase Soil Health

Josh McGillResearch, Soil Improvement

By Lukas M. Hallman, John M. Santiago and Lorenzo Rossi At first glance, one may not see how oak trees relate to citrus production. But in the early 2010s, growers and scientists reported seeing little to no HLB symptoms on citrus growing underneath the dripline of oak trees compared to citrus trees nearby but not directly under oak trees. These …

nutrient availability

Keeping Soil pH at the Optimal Level

Josh McGillNutrition, soil

By Brandon White This time of year is the end of the peak nutrient demand for citrus trees. Regardless of the types of fertilizer or inputs applied in the groves, trees have been taking up nutrients while growing in full tilt during the spring season. One of the greatest factors determining how well trees take up nutrients is soil pH. …

Phosphorus Recommendations and Soil pH Amendments

Josh McGillHLB Management, Nutrition, Soil Improvement

By Kelly T. Morgan and Davie Kadyampakeni Most information provided in the 2020 3rd edition of Nutrition of Florida Citrus Trees is still sound for healthy citrus trees under Florida production conditions. Past information on nutrients, application methods, leaf and soil sampling, and irrigation scheduling are also effective for management of huanglongbing (HLB)-affected trees. However, research conducted since HLB was …

Soil Is Key to Setting Up Trees for Success

Josh McGillAgriculture, Nutrition, Soil Improvement

By Brad Turner As I started my regenerative journey five years ago, it conjured up memories of walking the family groves in the 1970s with my freshly sharpened eye hoe. I would follow the tractor as it pulled the offset chopper, crisscrossing between the widely spaced trees in all directions. The native grasses and broadleaf plants — including legumes like …

Australia to Test UF’s HLB-Tolerant Rootstocks

Ernie NeffRootstocks

HLB-tolerant rootstock seeds from the University of Florida (UF) have arrived in Dareton and Bundaberg to be evaluated under Australian conditions. Citrus Australia CEO Nathan Hancock said it’s important that the rootstocks have arrived in Australia well before the Asian citrus psyllid (ACP) and the HLB it spreads. “We need to know if these rootstocks from Florida are going to …

California

Oak Leaf Extract Tested as HLB Tool

Ernie NeffHLB Management

In the search for solutions to HLB, a formulation based on oak leaf extract has been developed by citrus growers Travis Murphy and Tom Thayer, the Indian River Citrus League’s October River Ramblings newsletter reported. The formulation was developed following the growers’ observations that citrus trees under oak trees were free of HLB compared to nearby field trees that had …

Nutrient Recommendations

The Fate of Phosphorus in Florida Citrus Soils

Ernie NeffNutrition, soil

Multi-county citrus Extension agent Chris Oswalt discussed the fate of phosphorus in Florida citrus soils in the September Extension newsletter, Citrus from the Ridge to the Valley. Excerpts from his article follow. The amount of phosphorus in soil is closely related to the potential availability of this phosphorus to plants … Potentially available soil forms of phosphorus are dependent on …

Field Trials for Cultivar Evaluation; Soil and Root Health

Ashley RobinsonAll In For Citrus Podcast, Research

University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) citrus researchers are collaborating on ground-breaking research projects to fight against HLB. They are working with researchers at the University of California-Riverside (UC-Riverside), Texas A&M and Washington State University on a project to field-test new citrus cultivars for tolerance or resistance to HLB. The research is funded by the U.S. …

Living With Greening by Improving Soil Health

Tacy CalliesSoil Improvement

By Ronald G. Doetch I am a lifelong farmer/agronomist and, at the age of 73, have worked with many different crops through the many changes in agriculture challenges and production practices. I moved to Florida four years ago to grow a few oranges and have a firsthand look and understanding of the relationship of soil health to tree decline and …

UF/IFAS Plant and Soil Diagnostic Labs Remain Operational

Tacy CalliesIndustry News Release

The University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) wants growers to know its diagnostic labs are continuing to operate during the COVID-19 crisis. Plant and soil health are critical to agriculture, an industry designated as essential during the pandemic. Therefore plant, soil and water testing will continue to be available. The following UF/IFAS labs are receiving and …

Grower Appreciates Nutrition Test Kit

Ernie NeffNutrition

Lake Wales citrus grower Marshall Hartley left a recent meeting at the Citrus Research and Education Center with a box containing nutrition sampling materials for his small grove. His was one of 31 boxes passed out as part of the University of Florida Institute of Food and Agricultural Sciences’ (UF/IFAS) Citrus Nutrition Management Program. More growers will pick up boxes …

crdf

Studying Soil Microbes and Microbial Amendments

Tacy CalliesNews from our Sponsor

Column sponsored by the Citrus Research and Development Foundation This article addresses the idea that beneficial, naturally occurring soil- and root-based bacteria might aid in the management of HLB. The background for field trials described below is work by Nian Wang of the University of Florida Institute of Food and Agricultural Sciences, funded in part by the Citrus Research and …

Dual Treatment Tested for HLB Trees

Tacy CalliesCitrus, Nutrition

Severe pruning combined with enhanced foliar nutrition did not prove cost-effective. By Monica Ozores-Hampton, Fritz Roka, Robert Rouse and Pamela Roberts Citrus trees affected by huanglongbing (HLB) become diminished, weak and develop dieback resulting in reduced production. Decline in fruit yield ultimately prevents economically acceptable commercial citrus production. Pruning and spraying foliar nutritionals are two practices being considered to restore …