Precision Agriculture Technologies in Citrus

Tacy Callies Pests, Psyllids, Research, Technology

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 …

Citrus Industry Magazine CEU 2019 Article #1

What is a pesticide, really? By Laurie A. Hurner 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.  There is a lot of confusion about the term “pesticide” when you talk to …

HLB Reduction Strategies

Tacy Callies HLB Management

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 …

Cold-Protection Practices for Citrus

Ernie Neff cold protection

Chris Oswalt, University of Florida Institute of Food and Agricultural Sciences citrus Extension agent for Polk and Hillsborough counties, discusses passive and active cold-protection practices for citrus trees. “Passive practices are those things that growers would intentionally do before typically planting the grove,” Oswalt says. Site selection, including planting on higher elevations that are warmer than lower cold-pocket locations, is …

Components of a Healthy Citrus Soil

Tacy Callies Soil 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 …

long-horned beetle

New UF/IFAS Entomologist: From a Kid’s ‘Lab’ to Helping Citrus Growers

Daniel Cooper Citrus Greening, HLB Management, Industry News Release, Psyllids, Research

As a girl in her garage in Palm Bay, Florida, Lauren Diepenbrock, already a budding scientist, peered through the lens of her microscope and marveled at the magnification. “As a kid, I played in the woods and brought back all sorts of ‘finds,’ including a snake skeleton, none of which my mom allowed in the house,” said Diepenbrock, an assistant …

Sneak Peek: April 2018 Citrus Industry Magazine

Tacy Callies Sneak Peek

Water is a key ingredient in achieving a healthy citrus crop, but too little or too much can be detrimental. Two articles in the April issue of Citrus Industry magazine address irrigation management. In the first article, growers will learn about irrigation scheduling methods and get production pointers for trees impacted by HLB and Hurricane Irma. The second article looks …

Plant Biostimulants — Snake Oils or Beneficial Substances?

Tacy Callies Biostimulants

By Ute Albrecht and Sarah Strauss Recent years have seen an explosion of products termed “biostimulants” as alternatives to traditional chemical products to improve plant growth and productivity, and to enhance the sustainability of agricultural systems. Although there is currently no legal definition of biostimulants, they are usually defined as “substance(s) and/or microorganisms that when applied to plants or the …

Addressing Claims of Herbicide in Orange Juice

Tacy Callies Food Safety

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 …

A Look Back at 100 Years of Citrus Innovation

Tacy Callies History

By Beverly James, Alec Richman, Brad Buck, Samantha Grenrock and Tom Nordlie The year was 1917. In April, the United States entered World War I. Florida’s population was fast approaching 1 million, and agriculture was the state’s most important economic driver. Citrus cultivation, introduced to Florida 400 years earlier by Spanish explorers, had spawned an industry following the Civil War. …

Korea Requirements for Fuller Rose Beetle

Len Wilcox California Corner, Pests

As in previous years, orange shipments to Korea must be free of Fuller rose beetle (FRB) and California red scale (CRS). Growers desiring to qualify oranges for export to South Korea must comply with the FRB protocol during the 2017-2018 shipping season. Growers are required to implement the following measures for FRB control on oranges: 1. Skirt-prune trees to prevent …

Controlled-Release Fertilizer Boosts Health of HLB Trees (Part 2)

Tacy Callies Citrus, Nutrition

By Pete Spyke, Joby Sherrod and Jude Grosser Part 1 of this article, published in the April 2017 issue of Citrus Industry magazine, provided some background information on controlled-release fertilizer (CRF) along with a discussion of practical applications in citrus production. This article, part 2, includes summaries of observations from several case studies in which CRF has been applied for …

Freeze Damage Symptoms and Recovery for Citrus

Tacy Callies Freeze Protection, Weather

By Mongi Zekri, Chris Oswalt, Steve Futch and Laurie Hurner The extent of cold injury to citrus depends on a number of factors, and its expression may occur over an extended period of time. Factors responsible for freeze damage include minimum temperature, duration of freezing temperatures and stage of tree acclimation. Susceptibility of trees to freezing temperatures can also be …

Agricultural Hall of Fame Tickets Now on Sale

Daniel Cooper Agriculture, Industry News Release

Tickets are on sale for the 38th annual Florida Agricultural Hall of Fame banquet on Feb. 14, which will honor four inductees who have made invaluable contributions to Florida agriculture. The banquet, which each year celebrates the accomplishments of industry leaders who have served in research, education and business, is held in the Special Events Center at the Florida State …

England Named Director of UF/IFAS Hastings Agricultural Extension Center

Kelsey Fry Agriculture

Gary England has been named director of the University of Florida’s Institute of Food and Agricultural Sciences (UF/IFAS) Hastings Agricultural Extension Center (HAEC). The center is a resource for residents and agricultural producers in northeast Florida, a region known for both potatoes and surging urban development. “We are extremely pleased to have Gary England serve in this new leadership role …

Sneak Peek: July Citrus Industry Magazine

Tacy Callies Citrus, Irrigation

Citrus Industry subscribers will soon receive the July issue of the magazine. Featured in the cover story are young citrus leaders LeAnna and Aaron Himrod. Read all about the sister and brother’s accomplishments as they carry on the family tradition of staying in the citrus business. This issue also includes two water-management articles by University of Florida professor Kelly Morgan. …