Soft Citrus Climbs in South Africa

Ernie NeffInternational

Production of tangerines/mandarins in South Africa is expected to continue its aggressive growth and is estimated to increase by 8% to 500,000 metric tons in 2020-21. Tangerines/mandarins are referred to as soft citrus. High levels of new plantings in recent years contributed to the production increase, the U.S. Department of Agriculture’s Foreign Agricultural Service reported in June. The area planted …

Cutrale Achieves Sustainability Gold Score

Ernie NeffAwards

Cutrale recently announced it has achieved a gold score in sustainability for all its orange farms in Brazil and the United States. The award is from the Sustainable Agriculture Initiative (SAI) – Farm Sustainability Assessment (FSA), a widely recognized sustainability standard. The FSA was developed by the SAI to enable food and beverage businesses from all crops and countries to …

Indian River Millennium Block Shows Rootstock Effects

Tacy CalliesRootstocks

By Rhuanito S. Ferrarezi, J. Martin Zapien-Macias, Mac Hossain, Tom James, Ronald D. Cave, Peter Spyke, William S. Castle, Jude W. Grosser, Fred Gmitter and Ed Stover In the last decade, huanglongbing (HLB) has reduced production of Florida grapefruit by 75%, mandarin by 78% and sweet orange by 52%. This decrease is significant for the Indian River District, which produces …

Grapefruit Making Strides in South Africa

Ernie NeffGrapefruit, International

The production of grapefruit in South Africa is estimated to increase by 8% in 2020-21 from the prior year, to 373,000 metric tons, the U.S. Department of Agriculture’s Foreign Agricultural Service (USDA/FAS) reported in June. The area planted to grapefruit is expected to increase by 5% to 8,700 hectares. The predominant variety planted in South Africa is the Star Ruby, …

florida

Final U.S. Citrus Crop Forecast Sees Changes

Daniel CooperCrop Forecast

The U.S. Department of Agriculture’s (USDA) final 2020-2021 Florida orange forecast is 52.8 million boxes. California orange production edged out Florida with 54.5 million boxes of oranges. Texas oranges remained at 1.05 million boxes. The final Florida orange total is comprised of 22.7 million boxes of non-Valencia oranges (early, midseason and Navel varieties), unchanged from the June forecast, and 30.1 …

Valencia Performance and Rootstock Propagation Methods

Tacy CalliesRootstocks

By Ute Albrecht, Sameer Pokhrel and Kim D. Bowman According to the 2019–2020 Citrus Budwood Annual Report, there were 772,391 (20%) rootstock propagations from tissue culture and 224,346 (6%) from cuttings out of the 3.9 million total propagations that season. The report is from the Florida Department of Agriculture and Consumer Services. This unprecedented high number of vegetative (not from …

tangerines/mandarins

Turkey Tangerine Forecast Climbs

Ernie NeffInternational

Tangerine production in Turkey is expected to climb 14% in 2020-21, to 1.6 million metric tons, the U.S. Department of Agriculture’s Foreign Agricultural Service reported. The fruit will have good harvest quality due to favorable timing of rains and temperatures. Production will exceed that of 2019-20 because of freezing conditions and heavy storms during the 2019-20 bloom period, but will …

Apply for FFVA Leader Program

Ernie NeffEducation

The application period for Class 11 of Florida Fruit & Vegetable Association’s (FFVA) Emerging Leader Development Program is now open. The submission deadline is July 15.  Since 2011, more than 100 participants have graduated from the program, which develops leaders to be strong advocates for Florida agriculture. Graduates are expected to make lasting contributions to the industry and enhance their …

Change in Grove Practices Leads to Award

Ernie NeffAwards

Brad Turner has worked in Florida citrus more than 40 years as a grower, production manager, caretaker and nursery owner. For most of that time, he focused on using synthetic fertilizers, fungicides, insecticides and herbicides as the necessary inputs for citrus management. But a change in the way he thought citrus should be grown led to him being named a …

OLL Sweet Oranges: Alternatives to Valencia

Tacy CalliesVarieties

By Jude Grosser Valencia sweet orange has always been the gold standard of processing oranges for the best orange juice in the world. However, there is a new kid on the block that is challenging this. University of Florida (UF) citrus breeders have been working with the late, great Citrus Hall of Fame grower/researcher Orie Lee and his family for …

Morocco Developing New Citrus Varieties

Ernie NeffInternational

The National Institute for Agricultural Research (INRA) in Morocco is developing new early- and late-season harvest varieties to support a prolonged production season, the U.S. Department of Agriculture’s Foreign Agricultural Service (FAS) reported. This will allow producers to supply markets for longer periods of time and help Morocco remain competitive in international markets.   In May, INRA launched a call …

PIECES OF THE PAST: Orange Guards

Tacy CalliesPieces of the Past

By Brenda Eubanks Burnette We received a request for information several months ago from researcher/historian Jono Miller regarding an old production practice of leaving cabbage palms in citrus groves as “orange guards.” The trees helped protect groves from freezing due to the creation of a canopy to keep the heat from the land rising during cold weather. In his new …

Making Sense of Biologicals: Improve Fruit Size and Quality

Tacy CalliesBiostimulants, MSOB

Citrus growers need as many tools in their toolbox as possible. With the Florida citrus industry decimated in recent years, mainly due to citrus greening disease, growers are exploring all options to help them succeed. CYAN 365®, a biostimulant from C Green Ag Biotechnology, is one tool that has proven to help enhance the quality and size of citrus crops, …

Fruit Drop Is Biggest Grower Concern

Ernie NeffFruit Drop

Fruit drop “is probably the No. 1 concern” of the citrus growers he knows, says Ray Royce, executive director of Highlands County Citrus Growers Association (HCCGA). “Fruit drop and profitability are going hand in hand,” he adds. “There’s a tremendous struggle now to be profitable, given the relatively low harvest numbers,” Royce says. “I think growers believe that if they …

Understanding Physiological Fruit Drop of Citrus

Tacy CalliesFruit Drop, Tip of the Week

By Tripti Vashisth, Megan Dewdney and Lauren Diepenbrock Citrus flowers profusely, but less than 2% of the flowers become harvestable fruit. In other words, 98% of the flowers seen during bloom will end up on the grove floor at some point during fruit development, whether as a flower, fruitlet, young fruit or mature fruit. Profuse flowering allows trees to produce …

Effect of Nutrients on Canopy Response and Yield

Tacy CalliesNutrition

By Davie Kadyampakeni, Tanyaradzwa Chinyukwi, Alan Wright and Rhuanito Ferrarezi The development of an efficient nutrition program for citrus trees provides the essential elements for optimum tree growth and yield. Tree performance is reduced when an essential element is deficient, while an excessive amount leads to plant toxicity and hinders overall tree performance. In citrus production, adequate fertilization rates help …

Educational Opportunities for Growers

Ernie NeffCitrus Expo, Education

Michael Rogers discusses several educational opportunities for citrus growers, including the Citrus, Vegetable and Specialty Crop Expo and Citrus Packinghouse Day. Rogers is the director of the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Citrus Research and Education Center (CREC). The Expo (Aug. 18-19) and Packinghouse Day (Aug. 26) will be held in-person this year after taking …

Varieties for the Indian River Region

Ashley RobinsonVarieties

In response to HLB, the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) citrus breeding program is focused on developing improved varieties and rootstocks for sustainable and profitable production. Rootstock and scion performance trials have been established throughout the state. UF/IFAS citrus breeder Fred Gmitter touched on some of the experimental trials being done in Florida’s Indian River …

Psyllid Exclusion and Screen Selection

Tacy CalliesCUPS, Tip of the Week

By Arnold Schumann and Timothy Ebert As the adage goes, “necessity is the mother of invention.” Since the presence of huanglongbing (citrus greening) in Florida, new methods of managing the Asian citrus psyllid that transmits the bacteria have resulted in the growing of citrus in screen houses (CUPS, citrus under protective screen) and the use of individual protective covers (IPCs), …

Research Update on Cover Crops and Nematicides

Tacy CalliesCover Crops, Pests

By Larry Duncan, Johan Desaeger and Homan Regmi Two field experiments were initiated in January 2019 to evaluate the efficacy of nematicides and cover crops for managing the sting nematode (Belonolaimus longicaudatus) in a replanted grove affected by huanglongbing (HLB). The trees were nearly two years old when perennial peanut (resistant to sting nematode) plots were established in row middles …