U.S. Department of Agriculture (USDA) officials have confirmed the first detection of sweet orange scab (SOS) in Alabama. The fruit sample was collected in Baldwin County by Alabama Department of Agriculture and Industries’ (ADAI) plant protection inspectors during a delimiting survey for citrus greening disease. The Auburn University Plant Diagnostic Clinic provided the initial diagnosis of SOS, and USDA Animal …
Attacking HLB From All Angles
University of California Riverside (UCR) is committed to a major offensive against huanglongbing (HLB, or citrus greening disease), as the threat is marching ever closer to commercial citrus orchards in California. The only confirmed cases in Southern California have been in residential trees in Los Angeles and Orange counties, including near the UCR campus. But some experts believe it is …
Super-Root Mutants for HLB
A citrus nursery employee has found super-root mutants that might offer hope for developing trees that are less susceptible to HLB. The employee is Beth Lamb, a tissue culture expert at Phillip Rucks Citrus Nursery. University of Florida Institute of Food and Agricultural Sciences citrus breeder Jude Grosser tells about her discovery. “She discovered some mutants of some of the …
Freeze Probability and Protection Efforts
Florida hasn’t had a widespread tree-killing citrus freeze in years. That’s very fortunate since the industry has been dealing with the highly destructive HLB disease since 2005 and with negative impacts of Hurricane Irma since September. However, a damaging freeze is always a possibility at this time of year. Consequently, multi-county citrus Extension agent Chris Oswalt held a winter weather …
Psyllid Control Strategies
University of Florida Institute of Food and Agricultural Sciences entomologist Jawwad Qureshi discussed several means of Asian citrus psyllid control at Citrus Expo in August. He provides an overview of his presentation. Qureshi says it is best to start psyllid sprays during the winter dormant period. “Do it individually or do it in a collaborative effort, but you must do …
UF Study: Screen Houses May Help Prevent Grapefruit Greening
By: Brad Buck, 352-294-3303, bradbuck@ufl.edu GAINESVILLE, Fla. — Grapefruit grows better under screen houses than in unprotected groves because the indoor facilities keep out the insect that causes citrus greening, new University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) research shows. Protecting citrus from greening is essential, UF/IFAS researchers say. The disease, first detected in Florida in 2004, …
Plant Biostimulants — Snake Oils or Beneficial Substances?
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 …
Semiautonomous Vehicle Used in CUPS
University of Florida Institute of Food and Agricultural Sciences researcher Arnold Schumann showed off a semiautonomous vehicle at the recent Citrus Research and Education Center 100th anniversary celebration. The vehicle is used in the center’s citrus under protective cover (CUPS) facility, designed to keep trees free of HLB-spreading psyllids. Schumann discusses the vehicle and its uses. “We designed that vehicle …
HLB Research Beyond CRDF: Florida’s Goal Achieved
By Harold Browning Column sponsored by the Citrus Research and Development Foundation As 2017 draws to a close, the Citrus Research and Development Foundation (CRDF) is working to redefine the primary directions for its research and delivery programs. Federal funding programs that have emerged over the past four years are covering much of the discovery and knowledge-building research, and is …
Dramatic Weather Events Disrupt the Orange Juice Market
By Marcos Fava Neves The first 2017–18 U.S. Department of Agriculture forecast for Florida oranges — 54 million boxes — after Hurricane Irma was the lowest number in 70 years. Before the hurricane, we were all expecting that Florida would have more than 80 million boxes of oranges. This possible shortage of approximately 25 million boxes will dramatically affect not-from-concentrate …
Low-Density Planting Problematic with HLB
Two economists addressing a Gulf Citrus Growers Association economic seminar on Nov. 30 agreed that low-density citrus plantings would likely be hazardous to growers’ financial health in the face of HLB. One also reported that the average grower is not making a profit, and that small growers are exiting the industry faster than larger growers. “We were looking into different …
Walls Aim to Keep Psyllids Out
Walls consisting of insect-proof screen held up by telephone poles hold promise for helping growers reduce the cost of controlling HLB-spreading psyllids. The walls serve as artificial windbreaks in a new model grove planted in June at the Citrus Research and Education Center (CREC). The grove was one of numerous projects viewed by more than 500 attendees who came to …
Maximizing Insurance Claims After Hurricane Irma
Attorney Steven Boyne with Gunster law firm in Jacksonville suggests ways growers can maximize insurance claims resulting from Hurricane Irma. His remarks summarize a presentation he made at the Florida Agriculture Financial Management Conference earlier this month. “The more documentation you can provide, the better,” Boyne says. “Don’t view the adjuster as an adversary. If you work closely with the …
Millennium Block Resurrected for HLB Research
An approximately 35-acre research plot that fell victim to citrus canker years ago will soon become a new research site helping growers pick trees that fare best with HLB. The plot at the Indian River Research and Education Center (IRREC) in Fort Pierce will keep its former name, the Millennium Block. University of Florida Institute of Food and Agricultural Sciences …
Pruning and Controlled-Release Fertilizer to Rehabilitate HLB Trees
By Tripti Vashisth and Troy Gainey Pruning is one of the oldest horticultural practices that changes the form and growth of a tree. The pruning process 1) adjusts tree shape and the ratio of framework to fruit-bearing shell of the canopy, 2) alters the shoot/root ratio and 3) changes the carbohydrate (food storage) status of the tree. Under Florida weather …
Irma Agriculture Losses Continue to Mount
Florida’s $2.5 billion request for federal disaster relief for its agriculture industry after Hurricane Irma might not be enough. Members of the House Select Committee on Hurricane Response and Preparedness said on Nov. 16 that month-old damage estimates made by the Florida Department of Agriculture and Consumer Services are too low. “I actually think your numbers are conservative,” said Rep. …
‘Herbicide Synergy’ Looks Promising
A University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researcher is trying to give growers more weed control options. The researcher, Ramdas Kanissery, says he wants the options to be more effective and economically viable as well as environmentally friendly. “We are introducing a concept: herbicide synergy,” says Kanissery, a horticulturist at the UF/IFAS Southwest Florida Research and …
70th Anniversary for Indian River Research and Education Center
A big event will take place Nov. 16 as the 70th anniversary of the Indian River Research and Education Center in Fort Pierce takes place. Jack Payne, University of Florida senior vice president for agriculture and natural resources, invites folks to attend. From Indian River Research and Education Center: Seventy years of service to growers in the world’s renowned grapefruit production region …
Specialty Crop Grower Sees Success with Finger Limes
By Len Wilcox When Jim Shanley retired from his highly successful career in commodity trading, he knew what he wanted to do and where he wanted to do it: farm specialty crops in the hills overlooking Morro Bay, California. His choice of crops, however, was not so clear. He started with avocados, but it was a curious little fruit from …
Mutual on November Crop Forecast and Hurricane Aid
“In the wake of Hurricane Irma, it is extremely difficult to estimate the size of this year’s crop,” Florida Citrus Mutual CEO Mike Sparks said soon after the latest citrus crop forecast was issued on Nov. 9. “In reality, we probably won’t have an accurate number until the middle of 2018 once all fruit is picked. Long term, the effects …