Black Spot Management by Variety and Age

Josh McGillBrazil, Diseases

In Brazil’s São Paulo citrus belt, infections of fruit by black spot usually occur from petal fall, in September/October, until the end of the rainy season, usually in April. Black spot can reduce production by up to 85%. Some studies have shown that the amount of fungicide applications to control black spot can be established according to the orange variety. …

Alico Citrus

Nutrient Uptake Potential of Rootstocks

Josh McGillNutrition, Rootstocks

The objective of a new study published in HortScience was to evaluate and understand the nutrient uptake potential of citrus rootstocks. Conducted by University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researchers, it is one of the first citrus studies to report nutrient uptake efficiency and the potential of rootstocks. The information presented in the study can be …

CRDF Funds Project to Arrest HLB Bacteria

Josh McGillCRDF, Research

At the latest Citrus Research and Development Foundation (CRDF) board of directors meeting, funding was approved for a project by Robert Turgeon. He is a professor of plant biology at Cornell University. “Dr. Turgeon is considered by some to be the world’s foremost expert on phloem physiology. If his project succeeds, it could solve our problem with HLB,” CRDF chief …

OJ Standard of Identity Discussed

Josh McGillFlorida Citrus Mutual, Orange Juice

No action was taken after numerous speakers discussed potential changes to the standard of identity for orange juice (OJ) at a March 1 public workshop. Taking place at Florida Citrus Mutual (FCM) headquarters in Bartow, the workshop was titled “Continuing the OJ Standards Conversation.” FCM Executive Vice President and Chief Executive Officer Matt Joyner offered background on the standard of …

Top 10 Best Practices for Trunk Injection

Josh McGillHLB Management, Tip of the Week

By Ute Albrecht Replicated field studies have demonstrated positive effects of oxytetracycline administered by trunk injection to manage HLB. In October 2022, a 24(c) special local need label was approved that allows the use of this technology in Florida, and final clearance was given in January.  When practicing trunk injection, it is important to do so properly and to be …

rootstock

Satsumas Look ‘Pretty Darn Good’ Post-freeze

Josh McGillCold Hardy, freeze

Satsumas in the Sweet Valley Citrus region appear to have aced their first test of multiple days of subfreezing temperatures. It is still a wait-and-see approach with other varieties, however. One grower was extremely optimistic about satsumas, the cold-hardy mandarins that look to have survived December temperatures in the teens. “Satsumas are pretty darn good. We lost some leaves, got …

tree of the future

The Advantage of Youth

Josh McGillCRDF

Morgan McKenna Porter brings new energy to the Citrus Research and Development Foundation. By Ernie Neff New Citrus Research and Development Foundation (CRDF) board President Morgan McKenna Porter was born Feb. 29, 1992. There’s only a Feb. 29 every fourth year, a leap year. “So,” she quipped, “CRDF has a seven-year-old president if we go by my leap year age.” …

HLB Concerns Government Officials in Brazil

Josh McGillBrazil, HLB Management

Brazil’s Fundecitrus on Feb. 15 participated in a meeting with state and local government representatives to discuss the country’s citrus greening (HLB) situation. Representatives of the Department of Agriculture and Supply (SAA) of the state of São Paulo and mayors of some municipalities in the citrus belt also attended. Mayors and representatives of city halls expressed concern about the economic …

Tropical Storm Option Added to Hurricane Insurance

Josh McGillhurricane, Insurance

After hearing directly from agricultural producers, the U.S. Department of Agriculture (USDA) is expanding its Hurricane Insurance Protection-Wind Index (HIP-WI) Endorsement with a Tropical Storm Option. USDA’s Risk Management Agency (RMA) will offer this option for the 2023 crop year. “During the past few years, many farmers have felt the impacts of tropical activity, and it’s important that we offer …

First Step Taken to Establish a Georgia Citrus Commission

Josh McGillCold Hardy, Legislative

The Georgia House of Representatives Agriculture & Consumer Affairs Committee passed legislation that would establish a Georgia Citrus Commission. It must now go to the House Rules Committee before being discussed in the Senate. A citrus commission would be a huge step for an industry that has already exploded in Georgia, said Lindy Savelle, president of the Georgia Citrus Association …

IPCs Changing the Florida Citrus Landscape

Josh McGillAll In For Citrus Podcast, IPCs

The use of individual protective covers (IPCs) to safeguard young citrus trees from HLB has become a common practice in Florida groves in recent years. Fernando Alferez, an assistant professor of citrus horticulture with the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS), has led the research effort to study IPCs and their effectiveness in preventing HLB. He …

Drones for Pest Control Effective in Some Situations

Josh McGillPest Management, Technology

Technological advancements in recent years allow drones to perform precise agricultural work efficiently. One of the tasks in greatest demand is the application of phytosanitary products in a quick and timely manner. Drones can be used for extensive applications in a short time and are ideal for ultra-low-volume interventions. With drones, very specific sectors, such as sources of disease or …

Examining Hamlin Survivor Trees

Josh McGillHLB Management, Research, Varieties

By Gary England, Fred Gmitter and Manjul Dutt In 2014, most groves in Central Florida had citrus greening infection rates approaching 100%, but a Lake County grower reported that some trees in his Hamlin on Swingle blocks seemed to be relatively healthy. Some visual HLB symptoms were observed on these “surviving” trees, but they did not have the massive fall …

New President Has Plans for Cold Hardy Citrus Association

Josh McGillCold Hardy

Mark Clikas, who became president of the Cold Hardy Citrus Association (CHCA) in February, has a recovery focus and sales goal for the group. “My focus is to get the members of CHCA more involved in the organization to help the growers improve the citrus trees’ health after the major freeze event around Christmas 2022,” he said. “My goal is …

citrus tree

Revised Approach to Reduce ACP Management Costs

Josh McGillHLB Management, Tip of the Week

By Lukasz Stelinski Vector control is considered a basic component of HLB management even under high disease incidence scenarios. A recent study compared the effects of three different economic thresholds (ET-0.2, ET-0.5 and ET-1.0) and one calendar-based application schedule on the incidence of Asian citrus psyllid (ACP) and beneficial species in plots of commercially grown citrus. The study also examined …

In Defense of Florida’s Citrus Industry

Josh McGillEconomics

By Marisa L. Zansler The Florida citrus industry has endured many challenges throughout its storied history, but never more so than over the past 18 years. During this time, the devastating impact of HLB has become more apparent and entrenched as the root cause of declines in the production of oranges, grapefruit and specialty citrus. HLB, combined with recent weather-related …

Florida Citrus Land Sales Remain Strong

Josh McGillLand

While the real estate boom in Florida has cooled somewhat in the past year, it didn’t temper the turnout for the annual Lay of the Land Conference, which is hosted by SVN Saunders Ralston Dantzler Real Estate. The Feb. 23-24 event drew record attendance to the recently opened Bonnet Springs Park event center in Lakeland, Florida. The event hosts speakers …

Sweet Valley Citrus Expansion Could Stall

Josh McGillCold Hardy, freeze

Trees in the Sweet Valley Citrus region have been in high demand in recent years. Plantings of satsuma mandarins and other citrus varieties have steadily risen the past few years in Georgia, Alabama and North Florida. That steady climb is expected to stall this year, however. Following the Christmas freeze event that rattled the industry in the Southeast in December …

Pest Management Findings Shared

Josh McGillCUPS, IPCs, Pests

Foliar sprays of insecticides timed to citrus flushing provided a significant reduction in Asian citrus psyllid (ACP) populations compared to standard grower practices, researcher Jawwad Qureshi reported. Timing sprays to flushing also led to a reduction in sprays, the University of Florida Institute of Food and Agricultural Sciences associate professor of entomology said in a virtual presentation on Feb. 22. …