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 …
Sneak Peek: November 2019 Citrus Industry Magazine
Asian citrus psyllids (ACP) are here to stay, and growers need multiple management methods for dealing with the deadly HLB disease this pest transmits to trees. The November issue of Citrus Industry magazine offers growers psyllid strategies they can use now as well as details on research investigating a biological way to knock down ACP. Several fresh citrus growers in …
IPCs for HLB Prevention in Young Trees
By Fernando Alferez, Susmita Gaire, Ute Albrecht, Ozgur Batuman, Jawwad Qureshi and Mongi Zekri Controlling the Asian citrus psyllid vector of huanglongbing (HLB) is critical, especially in young trees. Reducing HLB incidence is essential for tree survival and productivity under current endemic conditions. Individual protective covers (IPCs) are a novel strategy based on psyllid exclusion by means of a protective …
Citrus Industry Magazine CEU 2019 Article #3
Protecting soil and water while using pesticides 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. Pesticides, pesticides, pesticides. It seems that the word pesticide has become quite …
Sneak Peek: August 2019 Citrus Industry Magazine
The August issue of Citrus Industry magazine has everything you need to make the most of your time at Citrus Expo. The complete guide to the event includes a seminar schedule, exhibitor directory, details about the new hands-on citrus session and more. The Vegetable and Specialty Crop Expo is once again being held jointly with Citrus Expo. The general session …
Putting IPM Back in Citrus
By Lukasz L. Stelinski, Jawwad A. Qureshi and L. Gene Albrigo Florida citrus production has a long and trailblazing history of implementing integrated pest management (IPM). In 1950, the director of the Florida Citrus Experiment Station, A.F. Camp, proposed an “Ecological Survey of Citrus Pests and Disorders” to provide a comprehensive survey of the ecology of citrus groves throughout Florida …
Getting HLB Material Into Phloem
University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) plant pathologist Ozgur Batuman discusses efforts to get materials that fight HLB into the citrus tree’s phloem, where it might be most effective. Batuman explains that bacteria that cause HLB “live inside the phloem of citrus. That is very difficult to reach to kill … by conventional methods, such as …
Study Shows Mandarin IPM Needs Work
According to a study published in the Journal of Economic Entomology, current integrated pest management (IPM) techniques used in California mandarins may need to be adjusted to allow for differences between mandarins and oranges. The study suggests that following guidelines for oranges may lead to an overuse of pesticides in some situations. Almost all mandarins in America are grown in …
Precision Agriculture Technologies in Citrus
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 …
Artificial Intelligence Could Help Citrus Growers Detect Psyllids
Precision agriculture engineer Yiannis Ampatzidis sees a day when citrus farmers use artificial intelligence (AI) to detect the pin-sized insects that can infect the fruit’s trees with the deadly greening disease. That day could come in the near future, because Ampatzidis and his research team are starting to perfect a system to detect the potentially deadly Asian citrus psyllid. Citrus …
Grapefruit Grown Under Protective Screens Maximizes Fruit Yield
Growers of one of Florida’s signature citrus crops may see more production and possibly less of the deadly citrus greening disease. Researchers have worked for four years growing grapefruit under protective screens on a 1-acre experimental plot at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS), and they’re seeing encouraging results. UF/IFAS scientists and a few commercial …
Exploring the Economic Impact of California’s Citrus Industry
The California citrus industry is valued at nearly $3.5 billion with over 3,000 growers farming 320,000 acres throughout the state. The size and scale of citrus production has both direct and indirect effects on California’s overall economy. “If you think about primary production, which citrus is, it requires that the citrus growers buy what’s called ‘intermediate inputs’ or inputs from …
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 …
Sneak Peek: February 2019 Citrus Industry Magazine
Disease defense is on the agenda for the February 2019 issue of Citrus Industry. University of Florida plant pathologist Megan Dewdney gives growers a fungal foliar disease forecast for this year. She warns that the risk of postbloom fruit drop is greater in 2019 than it was in 2017 and 2018. Other diseases she says growers should to be on …
Study Zeroes in on Organic Ways to Beat Citrus Greening
Results show promise for organic groves, but more research is needed. Since it was first discovered in the United States in 2005, the bacterial disease known as citrus greening, or Huanglongbing, has devastated millions of acres of citrus crops throughout this country and abroad, ravaging citrus groves in Asia, Africa and South America. Citrus greening has impacted conventional and organic …
HLB Reduction Strategies
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 …
Evergreen Pro Emergency Use Approved in California
The U.S. Environmental Protection Agency (EPA) has approved an emergency authorization requested by California Citrus Mutual (CCM) to use Evergreen Pro 60-6 (EPA Reg. No. 1021-1770). It was temporarily approved as a post-harvest treatment option for all citrus in California to prevent the spread of Asian citrus psyllids, the vector for huanglongbing. CCM had requested that citrus growers be allowed to use …
Research Update: Citrus Under Protective Screen
By Arnold Schumann, Timothy Ebert, Laura Waldo, Danny Holmes, Napoleon Mariner, Gary Test, Chris Oswalt, Rhuanito Ferrarezi and Ricardo Lesmes Two studies with citrus under protective screen (CUPS) were established at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Citrus Research and Education Center (CREC) and Indian River Research and Education Center (IRREC) in 2013–14. The goal …
High-Density Planting of Dwarf Citrus
By Len Wilcox Research into high-density citrus plantings is gaining momentum at both ends of the country. In a study funded by the California Citrus Research Board, scientists are evaluating the consumption of water and other inputs used by high-density dwarf citrus trees. The scientists want to determine costs while the trees are maintaining high production levels. In Florida, researchers …
Sneak Peek: August 2018 Citrus Industry Magazine
At the center of the August issue of Citrus Industry magazine is the Citrus Expo show guide. Readers will find everything they need to know about Florida’s leading agricultural event. This year, Citrus Expo is expanding its reach to include vegetable and specialty crop growers. The Citrus Expo seminar and trade show is August 15–16 at the Lee Civic Center …