The natural enemies Diaphorencyrtus aligarhensis and Tamarixia radiata may have a future together in California. By Ivan Milosavljević and Mark S. Hoddle Over the past 11 years, the Asian citrus psyllid (ACP)-Candidatus Liberibacter asiaticus (CLas) (manifested as citrus greening) complex has become a “duo from hell” for Florida’s citrus industry, causing a substantial negative economic effect. ACP-CLAS MANAGEMENT IN CALIFORNIA …
Searching for Citrus Varieties Resistant to HLB
Three old trees at the Lindcove Research and Extension Center (REC) might hold the key to huanglongbing (HLB) resistance, according to an article in the University of California (UC) publication California Agriculture. The Lindcove REC is located on the eastern edge of the San Joaquin Valley near Visalia, California. Several of the citrus varieties tested at Lindcove REC were bred …
Ground Cover Management Can Improve Citrus Nutrition
By Christopher Vincent I recently spent a morning with a grower who was trying to find out how efficient his citrus fertility program was. His fertilizer practices were carefully considered combinations of granular fertilizer and fertigation based on foliar sampling and yield history. We were there to observe some European consultants who were measuring mineral nutrient levels in the root …
Citrus Canker Management for 2017
By Evan Johnson The citrus canker season is quickly approaching again, so it is time to start preparing your canker management plan. It is easy to forget the importance of controlling citrus canker with the current state of HLB in Florida. However, citrus canker can cause almost complete crop loss if environmental conditions are favorable for disease early in the …
Impact of the Water Bill on BMP Implementation
By Kelly Morgan Nitrogen and phosphorus are essential nutrients for plants and animals and are the limiting nutrients in aquatic environments. The correct balance of both nutrients is necessary for a healthy ecosystem; however, excessive nitrogen and/or phosphorus can cause significant water-quality problems. Typically, nitrogen is the limiting nutrient in spring and surface water systems. Therefore, even modest increases in …
Bucks Toward BMPs
Cost-share assistance is available from several sources for growers looking to implement improvements to best management practices. By Tacy Callies The names of the organizations and programs that provide funding to Florida citrus growers for best management practices (BMPs) projects — SWFWMD, FARMS, EQIP, etc. — can sound like a big bowl of alphabet soup. But in reality, they represent …
The Pest Partnerships that Threaten Citrus
Biocontrol of Asian citrus psyllids can be improved by controlling ants. By Kelsey Schall and Mark Hoddle More than a decade of battle with the Asian citrus psyllid (ACP)-huanglongbing (HLB) complex has drained the vigor from Florida’s citrus industry, costing billions in disease management and production losses. With HLB established in parts of urban Southern California, the second largest citrus …
Crop Forecast Sees Changes for Grapefruit, Tangerines and Mandarins
Mark Hudson of the U.S. Department of Agriculture National Agricultural Statistics Service issued the April 2017 citrus crop forecast. ORANGES The U.S. all-orange forecast for the 2016-2017 season is 5.11 million tons, down 1 percent from last month and down 16 percent from the 2015-2016 revised final utilization. The Florida all-orange forecast, at 67 million boxes (3.02 million tons), is unchanged from …
Buddha’s Hand Citron Could Play Role in Canker Resistance Breeding
By Naveen Kumar, R.C. Ebel and P.D. Roberts Citrus canker became endemic in Florida after several introductions and eradication programs dating back to 1915. The citrus industry struggles for an effective, permanent program. Canker is an expensive disease due to the need to increase the number of sprays and products applied. Canker also causes enormous economic losses due to fruit …
Brazil’s Shrinking Citrus Crop
By Marcos Fava Neves The latest announcement of Brazil’s orange production is 244 million boxes, almost 2 percent smaller than the September estimate (249 million boxes) and 0.6 percent smaller than the May number (246 million boxes). Hot weather in October and November reduced the expected yields. The crop is predicted to be 18 percent less than last season, and …
Controlling ACP and Other Pests as Critical as Ever
By Jawwad A. Qureshi and Philip A. Stansly More than a decade has passed since 2006, when huanglongbing (HLB) or citrus greening disease was identified in Florida. By then, the disease had already spread widely and went unrecognized due to high psyllid populations and a disease incubation period of months or years between infection and symptom expression. Nevertheless, management of …
Florida Agriculture Faces Big Hits in Budget Proposals
By: Abbey TaylorFlorida agriculture is facing some big budget cuts. The House’s Agriculture and Natural Resources Appropriations Subcommittee met on March 28 to discuss its budget proposal for the 2017–2018 fiscal year. The Senate’s Environment and Natural Resources Appropriations Subcommittee met on March 29 to discuss its budget proposal. While some dollar amounts in the competing proposals were different, Florida …
What Growers Need to Know About BMPs Now
Virtually all Florida citrus growers have signed up to participate in the Florida Department of Agriculture and Consumer Services’ (FDACS) best management practices (BMPs) for water quality and water quantity. “They’ve done an extremely good job over the last 20 years that we’ve had BMPs,” says University of Florida researcher Kelly Morgan, the statewide BMP coordinator. “The (state) water act …
More than 90 Groves, Former Groves Sold in 2016
More than 90 Florida citrus groves or former citrus groves were sold in 2016. Twenty four of the former groves are transitioning to other agriculture or to development. The sales are detailed in the Lay of the Land 2016 Market Report prepared by Coldwell Banker Commercial Saunders Real Estate (CBCSRE) in Lakeland. The report was distributed at the firm’s annual …
Phil Stansly: Psyllid Slayer
By Ernie Neff Gulf citrus growers had a CHMA (citrus health management area) before CHMAs were popular — even before they were called CHMAs! Phil Stansly, University of Florida (UF) entomology professor, is among those credited with organizing Florida’s first psyllid- and HLB-fighting CHMA. Others recognized for the achievement include Gulf Citrus Growers Association (GCGA), Florida Cooperative Extension Service and …
Citrus Agency Hopes for Rebound After New Forecast
The Florida Department of Citrus is hoping for a better second half of the growing season after the latest decline in projections for the state’s orange and grapefruit harvest. Meanwhile, Agriculture Commissioner Adam Putnam said a 4 percent drop from February to March in the forecast from the U.S. Department of Agriculture is another sign of the effects of deadly …
Soil Improvement with Organic Mulch
By Jim Hoffman This article is about my experiences with incorporating organic mulched materials into select areas of groves at Estes Citrus in the Indian River region. Our citrus groves consist of bedded, 40-acre blocks where it is common to have three or four distinct soil types in each block. Unfortunately, we have several sand-pond areas that have a history …
Georgia Citrus Association Holds First Annual Meeting
The Georgia Citrus Association held its first annual meeting in Tifton, Georgia today. The association’s president, Lindy Savelle, said the meeting was a huge success. The Georgia Citrus Association began in October with 27 members. Since then, the association has grown. Savelle says that there were over 275 people in attendance for the meeting. There were also 21 vendors and …
‘It’s Not a Pretty Picture,’ Industry Leader Tells State Senators
On February 21, leaders of three key Florida citrus organizations acquainted the Florida Senate’s Agriculture Committee with the issues facing the citrus industry. They summarize their presentations: “It’s not a pretty picture,” says Florida Citrus Mutual CEO Mike Sparks. He describes the huge production losses and increased costs that HLB disease has created. “Right now our whole future revolves around …
Micronutrients for Root Health and HLB
University of Florida researcher Jude Grosser, best known for his work on citrus breeding, has become a champion of micronutrients to improve root health and battle HLB. At a recent Highlands County OJ Break, he discussed the use of micronutrients, including why he got involved. “I guess just like any farmer, you don’t like watching your plants get sick and …





























