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Trialing Tree Immunizations for HLB, Xylella

Josh McGill February 7, 2023HLB Management, International, Research

Australia’s Hort Innovation has announced an $8.7 million investment to trial tree immunizations that protect Australia’s horticulture industries against the deadly huanglongbing (HLB) and Xylella diseases (including citrus variegated chlorosis). Hort Innovation is a grower-owned, not-for-profit research and development corporation for Australia’s horticulture industry. Hort Innovation Chief Executive Brett Fifield said the investment aims to safeguard key Australian horticulture industries by …

Key Terms to Know When Using Pesticides

Josh McGill February 1, 2023CEU, Pesticides

By Ajia Paolillo 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. As a certified restricted-use pesticide applicator, it is your responsibility to use pesticides safely, not only for yourself but for …

Sneak Peek: February 2023 Citrus Industry

Josh McGill January 25, 2023Diseases, Sneak Peek, weeds

With more growers incorporating compost and organic amendments into their production, weed management is receiving increased attention. University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) authors Ramdas Kanissery and Mahesh Bashyal take on this topic in their article in the February 2023 issue of Citrus Industry magazine. While compost and organic amendments can increase soil health and boost …

Investing in Artificial Intelligence

Josh McGill January 23, 2023Breeding, Technology

By J. Scott Angle, jangle@ufl.edu, @IFAS_VP University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) breeders produce new citrus plants more quickly than they can figure out if consumers like how the new fruit varieties taste. In the race to create versus evaluate, creators lead evaluators by hundreds of individual plants at a time. It takes a post-doc a …

Improving Yield Safety of Glyphosate

Josh McGill December 13, 2022Tip of the Week, weeds

By Ramdas Kanissery Florida citrus growers face weed management problems throughout the year because of conditions that favor rapid weed growth in groves. A weed-free tree row is desired in a citrus grove to minimize weed competition with trees. Hence, chemical weed control using post-emergent, systemic herbicides like glyphosate has become a vital production practice in the Florida citrus industry. …

The Essential Elements of Reset Management

Josh McGill December 6, 2022planting, Tip of the Week

By Mongi Zekri For maximum efficiency of a grove, it is essential that every location is occupied by a tree and that every tree is healthy. Prompt replacement of dead and declining trees means higher average long-term returns from the grove. If the declining trees remain in the grove, they keep getting weaker and yield less fruit each year. Therefore, …

New Advancements in Herbicide Spraying

Josh McGill November 21, 2022Technology, weeds

By Ramdas Kanissery, Yiannis Ampatzidis, Mahesh Bashyal and Shea Teems Weed control is vital for profitable citrus production since weeds compete for nutrients and water, can harbor diseases and pests, and get in the way of equipment and workers. Without proper management, weeds lead to reduced crop yield and economic losses. Chemical weed control using herbicides is the most common …

Post-Hurricane Weed Management

Josh McGill November 15, 2022Tip of the Week, weeds

By Ramdas Kanissery Hurricanes and the associated flooding will impact weed management in the affected season and the following years. Weeds should be effectively managed after these severe weather events as weeds may take advantage of the reduced competitiveness of recovering trees. INTENSIFY SCOUTINGA critical step in weed management after hurricanes is to scout groves and note the emergence of …

Sneak Peek: November 2022 Citrus Industry

Josh McGill October 26, 2022hurricane, Sneak Peek, Technology

While irrigation and technology were meant to be the focus of the November issue of Citrus Industry, the aftermath of Hurricane Ian, combined with the low initial crop forecast that does not even account for the storm’s damage, proved to be the much bigger story. Editor-in-Chief Frank Giles provides early details on the hurricane’s damage to Florida’s citrus industry and …

Pointers for Better Pre-emergent Herbicide Performance

Josh McGill October 12, 2022Citrus Expo, weeds

Ramdas Kanissery, speaking at the Citrus & Specialty Crop Expo, offered what he called an important strategy to prevent weed outbreaks in groves: “Never let ’em germinate.” Growers can keep weeds from germinating with pre-emergent herbicide programs, said the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) assistant professor of weed science. He works at the Southwest Florida …

When Are Cover Crops Profitable?

Josh McGill September 23, 2022Cover Crops, Economics, Research

At 200 boxes per acre, cover crops can be profitable in Valencia orange production, according to a Citrus & Specialty Crop Expo presentation. Tara Wade and Shourish Chakravarty prepared the presentation. Wade is an assistant professor, and Chakravarty is a post-doctoral associate, both at the University of Florida Institute of Food and Agricultural Sciences Southwest Florida Research and Education Center. …

Protecting Citrus Trees From Heat Stress

Josh McGill July 5, 2022Tip of the Week, Weather

By Anirban Guha Heat stress could take a toll on citrus tree health and fruit yield. In Florida, the hot season lasts more than four months. Long, hot, oppressive summer days can heat up leaves and fruit and make the trees extra thirsty. Also, high soil evaporation, irregular rainfall and poor soil water-holding capacity can often lead to summer drought …

Experimenting With Cover Crops: Results From Three Years of Trials

Josh McGill June 20, 2022Cover Crops, Research, weeds

By Sarah Strauss, Antonio Castellano-Hinojosa, Davie Kadyampakeni, Ramdas Kanissery and Tara Wade Cover crops, which are planted specifically for soil enhancement and not for sale or harvest, can improve soil conditions and production for a variety of crops. However, there have not been many studies documenting changes to soil conditions and production when using cover crops in citrus. The University …

Does Compost Improve Young Tree Growth?

Josh McGill June 13, 2022Research, Root health, Soil Improvement

By Ute Albrecht, Gabriel Pugina, Antonio Castellano-Hinojosa and Sarah Strauss Root health is important for tree growth and directly affects a tree’s ability to cope with adverse biotic and abiotic stresses. Most citrus production in Florida occurs on natural infertile sands with very little organic matter and a low cation exchange capacity (CEC), resulting in minimal amounts of soluble nutrients …

Grower Gives Update on Work With Cover Crops

Josh McGill May 17, 2022Cover Crops, Production

Florida citrus grower Ed James shared his successful experience with cover crops during a recent event he hosted at his Howey-in-the-Hills grove. The event, sponsored by Sand to Soil Services, included talks from industry experts on soil health and plant nutrition. James said his production went to “zero” before he planted cover crops about 12 years ago. Production “gradually came …

Diagnosing Herbicide Phytotoxicity in Citrus

Josh McGill May 16, 2022weeds

By Ramdas Kanissery, Nimal Timilsina and Ruby Tiwari Chemical weed control is an essential component of the toolbox to keep weeds in check in citrus groves. Citrus growers primarily rely on herbicide to manage weeds due to their efficacy and cost-effectiveness. Despite their benefits, herbicides may have a wide range of unintended effects on citrus. For instance, an herbicide-related injury …

Preparing to Plant Cover Crops

Josh McGill May 3, 2022Cover Crops, Tip of the Week

By Sarah Strauss If you’ve been exploring methods to improve your soil health, chances are you’ve come across the use of cover crops. Even though we call them “crops,” these plants are not harvested and are only planted to improve soil health. The benefits of cover crops to soil health include increasing soil organic matter and microbial diversity and activity …

Sneak Peek: May 2022 Citrus Industry

Josh McGill April 27, 2022HLB Management, Pesticides, Sneak Peek

While many citrus growers use similar strategies to cope with HLB, no two approaches are exactly the same. One grower who uses a very different method to manage citrus greening is Chip Henry. In the May cover story of Citrus Industry magazine, he tells how growing organically has helped him successfully fight the disease. Sometimes, production practices aimed at protecting …

Let’s Talk About CUPS

Josh McGill April 22, 2022CUPS, Economics, Florida Department of Citrus

By Thomas H. Spreen Citrus under protective screen (CUPS) is a relatively new technology being adopted to help spur expansion of fresh citrus production in Florida. Large screen houses (approximately 10 acres) are constructed. In the current arrangement, several screen houses are located together to facilitate caretaking and harvest. Trees are planted at high densities (more than 300 trees per …

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