Captain, We Have a Problem: the Juice Stocks!

Kelsey FryEconomics, Global Perspectives

By Marcos Fava Neves  The new figures from the U.S. Department of Agriculture released in March showed a small drop in the Florida orange estimate from 70 million to 67 million boxes. In February, the Brazilian orange estimate announced by Fundecitrus stayed the same, at approximately 244 million boxes. Oranges in Brazil currently contain a lot of water, with almost …

Growers

What Growers Say and Hear at Mutual Meetings

Ernie NeffBactericides, Legislative

Florida Citrus Mutual has been cooking for its grower members, hearing what’s on their minds and telling what the association is doing for them at area meetings this spring. At a recent meeting in Bartow, Mutual CEO Mike Sparks summarized what growers are talking about, and what Mutual is telling the growers. “The entire citrus industry knows we’re still in …

Teaming Up Against Asian Citrus Psyllids

Josh McGillCitrus, Psyllids

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

Len WilcoxCalifornia Corner, Research

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 …

bactericides

CRDF President Discusses Bactericides

Ernie NeffBactericides, Citrus Greening, HLB Management

Tom Jerkins, president of the Citrus Research and Development Foundation, several years ago led a crowd at Florida Citrus Mutual’s annual meeting in chanting, “We need bactericides now!” The bactericides, which growers hope will significantly reduce HLB impacts on citrus trees, have been available to citrus growers for more than a year now. Most growers reportedly are using them, at …

Ground Cover Management Can Improve Citrus Nutrition

Kelsey FryNutrition

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

Kelsey FryDiseases

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 …

Psyllids

Psyllid Movement and Location in Trees

Ernie NeffHLB Management, Psyllids

University of Florida entomologist Kirsten Pelz-Stelinski presented an abundance of facts about Asian citrus psyllids at the recent Florida Citrus Growers’ Institute in Avon Park. Her presentation included a discussion on how far the HLB-spreading psyllids can travel and where they are predominantly found in citrus trees. “They’re quite capable of long-distance movement, about four miles we determined,” Pelz-Stelinski says. …

Impact of the Water Bill on BMP Implementation     

Kelsey FryIrrigation, Water

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 …

Citrus Nurseryman Phil Rucks Honored

Tacy CalliesCitrus, Industry News Release

The Florida Nursery, Growers and Landscape Association (FNGLA) has named Phil Rucks of Phillip Rucks Citrus Nursery in Frostproof its Outstanding Volunteer Member of the year. During a very challenging time for the citrus nursery industry, Rucks has been a key leader within FNGLA’s Citrus Nursery Division. He spearheaded the construction of a citrus research greenhouse at the Mid-Florida Research …

Bucks Toward BMPs

Kelsey FryWater

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 …

IPCs

Keys to Gulf Citrus Production

Ernie NeffHLB Management, Nutrition

Several Florida growers recently have said that groves in the Gulf citrus region of Southwest Florida are looking better than most groves in the state. Additionally, statistics indicate production in the Gulf region exceeds production in the state as a whole. Multi-county citrus Extension agent Mongi Zekri, who represents the Southwest/Gulf region, was recently asked why the Gulf was doing …

The Pest Partnerships that Threaten Citrus

Josh McGillCalifornia Corner, Citrus, Pests

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 …

florida

Crop Forecast Sees Changes for Grapefruit, Tangerines and Mandarins

Daniel CooperCitrus, Crop Forecast

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

Kelsey FryCitrus, Diseases

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 …

Research

Getting Water pH Correct in the Face of HLB

Ernie NeffCitrus Greening, HLB Management, Irrigation, Water

University of Florida (UF) researcher Kelly Morgan discusses a study of how citrus growers are adjusting irrigation water pH levels, and what pH levels seem to work best. The acid level of citrus irrigation water has become an important consideration since HLB was discovered in Florida groves in 2005. “Jim Graham (a fellow UF researcher) has been conducting a survey …

leprosis

Researcher Provides Leprosis Update

Ernie NeffDiseases, Research

The citrus viral disease leprosis, found briefly in Florida in the 1960s, is now in South America, Central America and Mexico. Ron Brlansky, University of Florida professor emeritus, provided an update on the disease at a March OJ Break in Lake Alfred. “It (leprosis) causes fruit spotting, leaf spots, leaf drop, fruit drop and even some major twig dieback of …

Global Perspectives

Brazil’s Shrinking Citrus Crop

Tacy CalliesCitrus, Global Perspectives

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 …

HLB

Bactericide Grower Trials for HLB ‘Extremely Variable’

Ernie NeffBactericides, HLB Management

Stephanie Slinski, Citrus Research and Development Foundation bactericide project manager, discussed grower trials on the use of bactericides for HLB at the Florida Citrus Growers’ Institute in Avon Park on April 4. She summarizes the presentation. “We have a series of field trials set up throughout Florida to test the efficacy of oxytetracycline and streptomycin just in the grower program,” …

Controlling ACP and Other Pests as Critical as Ever

Tacy CalliesCitrus Greening

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 …