Are Cover Crops Economically Feasible?

Josh McGillCover Crops, Economics, Research

Although researchers cited numerous advantages of cover crops during a virtual seminar on June 23, it likely will take more time to determine if they are economically worthwhile. Near the end of the seminar, economists showed a slide stating, “Cover crops could be an economically feasible practice in citrus production.” But an audience member seemed to question that statement by …

Sneak Peek: July 2022 Citrus Industry

Josh McGillRootstocks, Sneak Peek, Varieties

HLB continued to contribute to reduced production and lower quality fruit for Florida growers this season. University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researchers are working to help alleviate these problems by delivering improved rootstocks and varieties. The July issue of Citrus Industry magazine includes an in-depth look at this work. Read “Juice for Florida’s future” to …

ACP Detection Response: ‘The System Is Working’

Josh McGillCalifornia Corner, HLB Management, Pests

County and state officials in California have been actively responding to various Asian citrus psyllid (ACP) discoveries in the Central Valley in recent weeks. Kern, Tulare and Fresno counties have all reported an ACP detection over the last month. The Citrus Pest and Disease Prevention Division (CPDPD) has been implementing delimitation protocols and necessary treatment programs. CPDPD Director Victoria Hornbaker …

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Southern Hemisphere Citrus Production to Rise

Josh McGillCrop Forecast, International

Citrus production in the Southern Hemisphere this year is expected to increase 4.85% compared to 2021, to 24.8 million tons, according to a preliminary forecast by the World Citrus Organisation (WCO). The forecast is based on information provided by industry associations in Argentina, Australia, Bolivia, Brazil, Chile, Peru, South Africa and Uruguay. A total of 13.2 million tons of citrus …

High Summer Temperatures Take a Toll on Trees

Josh McGillResearch, Weather

By Anirban Guha and Christopher Vincent A quick body temperature test is common these days before entering many workplaces, hospitals and clinics due to the ongoing COVID-19 pandemic. The purpose is to screen people for fevers, usually with a non-contact infrared thermometer. Measurement of plant body temperatures also has become common for many field crops, not to screen for infectious …

CUPS Grower: ‘It Is a Calculated Risk’

Josh McGillCUPS, Fresh

Although it was National OJ Day, the Southwest Florida Small Farmers Network held its spring meeting May 4 at a Polk County facility growing citrus for the fresh market. The Story Companies and Dundee Citrus Growers Association (CGA) conducted a tour of Story’s 11-acre citrus under protective screen (CUPS) pod. The Story pod is one of numerous such pods at …

Brazil to Study Wildlife in Citrus Orchards

Josh McGillBrazil, Environment, Research

Embrapa and Fundecitrus, which are investigating carbon stocks in the Brazilian citrus belt, will also study how citrus production sites and farms can be habitats for wild fauna. Embrapa is the Brazilian Agricultural Research Corporation. “Biodiversity is an indicator of environmental quality,” says Embrapa researcher José Roberto Miranda. He will coordinate the work to identify vertebrate animals, especially birds and …

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Integration of Nutrition and Crop Protection Products

Josh McGillNutrition, Pesticides, Research

By Davie Kadyampakeni and Evan Johnson In the era of citrus greening disease (huanglongbing, HLB), maintaining optimal nutrition and disease/pest management strategies is critical for avoiding adverse effects on tree performance. Use of the right fertilization rate, timing and placement are important for optimal citrus production. In a University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) research study, …

Texas Region Plans Citrus Revival

Josh McGillCitrus, Texas

The area of Falfurrias, Texas, was a very prosperous citrus-growing region from 1909 until 1951, according to Romulo Montilla, who has a ranch there. “However, in 1951 there was a freezing temperature that killed close to 90% of the citrus. In 1967, the remaining citrus was eliminated with another terrible freeze.” Montilla and others recently began working to return citrus …

Research Update: Stable Antimicrobial Peptide

Josh McGillPeptides, Research

By Hailing Jin Research on the effectiveness of a novel stable antimicrobial peptide (SAMP) identified from the Australian finger lime (Microcitrus australasica) to fight huanglongbing (HLB) continues in a multistate initiative involving 1,500 citrus trees. Although the pandemic has impacted the progress of the research, work has steadily continued and expanded.  Researchers at the University of California, Riverside and University …

Citrus Commission Learns About HLB-Tolerant Trees, Other Research

Josh McGillFlorida Department of Citrus, HLB Management, Research

At the Florida Citrus Commission meeting earlier this month, a federal scientist outlined an eight-step action plan for research and development of heirloom orange trees that appear to be tolerant to HLB. Brian Scully, director of the U.S. Department of Agriculture’s (USDA) Horticultural Research Laboratory, discussed the Donaldson and Tobias trees at USDA’s Whitmore Foundation Farm. A third tree is …

Sneak Peek: April 2022 Citrus Industry

Josh McGillCitrus, HLB Management, Sneak Peek

Increased attention on nutrition has become part of the overall strategy for managing HLB. The April issue of Citrus Industry magazine includes several articles on nutrient management designed to help growers keep trees productive in the HLB era. Mandarin growers will want to take note of new University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) research on how …

Early HLB Detection by Dogs

Josh McGillHLB Management, Research

By Amir Rezazadeh Huanglongbing (HLB), or citrus greening disease, has caused more than 70% decline in the production of oranges for juice and the fresh market in Florida. Once a tree is infected, there is no cure. Early detection followed by a rapid response is important to avoid further spread of the exotic pathogen. Delayed detection of HLB can result in …

Workshop to Focus on Irrigation and Nutrition

Josh McGillEducation, Irrigation, Nutrition

Citrus growers depend on the latest information about best irrigation and nutrition strategies for growing productive trees. University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researchers will share recent results regarding optimal crop management at a workshop and field visit opportunity on Feb. 8 at the Citrus Research and Education Center (CREC) in Lake Alfred. Davie Kadyampakeni, assistant …

Pummelo Interstocks Could Improve Performance of HLB Trees

Tacy CalliesResearch

By Manjul Dutt, Ethan Nielsen, Lamiaa Mahmoud, Maria Quirico and Jude Grosser All commercially cultivated citrus scion varieties are grafted onto rootstocks before being planted in the field. The rootstocks are selected based on specific desirable qualities (abiotic/biotic stress resistance) and the ability to produce a good crop in a specific location. The ideal rootstock confers disease resistance, hardiness, tolerance …

Getting New Varieties to Growers

Ernie NeffAll In For Citrus Podcast, Varieties

The executive directors of two organizations that play a vital role in getting citrus varieties into the hands of growers summarize how the process works. They are John Beuttenmuller with Florida Foundation Seed Producers (FFSP) and Peter Chaires with New Varieties Development & Management Corporation (NVDMC). When University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) plant breeders propose …

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Workshop Provides Black Spot Advice

Ernie NeffDiseases

Information to help growers find and control citrus black spot (CBS), as well as CBS regulatory procedures, were provided in an Oct. 26 training workshop in Arcadia. The workshop was hosted by multi-county citrus Extension agent Ajia Paolillo. University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) plant pathologist Megan Dewdney discussed the pest’s lifecycle, potential spread due to …

CUPS Not for All Citrus Growers

Tacy CalliesCUPS

One of the unique ways of managing citrus greening disease developed by University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researchers is not for all producers. Citrus under protective screen (CUPS) is just too expensive for all growers to take advantage of, says Fred Gmitter, a UF/IFAS citrus breeder. “It’s an extremely expensive investment,” Gmitter says. “For that …

Growers React Differently to Crop Forecast

Ernie NeffCrop Forecast

Florida citrus grower Kyle Story of The Story Companies thought the initial Florida orange crop forecast for the 2021-22 season was “realistic.” But the 47-million-box forecast struck fellow grower Paul Meador as low. Meador is president of Everglades Harvesting and Hauling and serves on the Florida Citrus Commission. The crop forecast, well below last season’s 52.8 million boxes of Florida …

Lessons on Yield and Root Health From Modified Nutrition

Tacy CalliesNutrition

By Davie Kadyampakeni, Evan Johnson, Kelly Morgan and Ali Atta Citrus production in Florida has been decreasing over the last 15 years due to several factors, with huanglongbing (HLB) a major driver. This disease has severe effects on citrus growth and production, including stunted vegetative growth, misshapen small fruits and poor color development, root mortality, stunted branches, excessive fruit drop, …