The second 2021-2022 orange crop forecast update for Brazil’s São Paulo and West-Southwest Minas Gerais citrus belt was released on Dec. 10 by Fundecitrus and its cooperators. The orange crop is projected at 264.14 million boxes. The crop size is down 1.39% from September’s forecast update and continues in a downward trend. Since May, the crop has decreased a total …
HLB-Tolerant Tree Among CRDF Topics
Research proposals and a newly discovered tree that shows tolerance to HLB were among the topics discussed at the Dec. 7 Citrus Research and Development Foundation (CRDF) board of directors meeting. Rick Dantzler, CRDF chief operating officer, provided a summary of actions taken at the meeting. OFFICERS AND DIRECTORSCRDF officers for the next two years were determined. Rob Atchley will …
HLB Quarantines Established in Alabama
Effective immediately, the U.S. Department of Agriculture’s Animal and Plant Health Inspection Service (APHIS), in cooperation with the Alabama Department of Agriculture and Industries (ADAI), is establishing new quarantines for huanglongbing (HLB; citrus greening disease). The new quarantines are effective in all areas of Baldwin and Mobile counties in Alabama. APHIS is taking this action because of HLB detections in …
Agricultural Water Use Changes Proposed
Taylor Langford O’Bannon, food safety Extension agent for the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS), shared information on the Food and Drug Administration’s (FDA) proposed changes to the Food Safety Modernization Act’s Produce Safety Rule. The changes pertain specifically to Subpart E (Agricultural Water). “The proposed changes, if finalized, will replace the pre-harvest microbial quality criteria and …
Know the Signs of Freeze Damage
By Amir Rezazadeh It is important to know how cold temperatures impact citrus trees. Citrus trees are native to subtropical and tropical regions. Although some mandarins and tangerines are quite cold-hardy, other citrus trees are not particularly cold-hardy and temperatures below 20 degrees for more than four hours may kill most citrus trees. Chilling damage in citrus depends on several factors. …
Field Day to Feature GA and Nutrition Trials
Growers will have the opportunity to learn more about recent citrus research trials on nutrition and gibberellic acid (GA) and their impact on tree health. University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Extension Polk County will host a field day on Dec. 14 to share research findings with growers. The field tours will begin with an overview …
Medfly Quarantine in Southern California
A portion of San Bernardino and Los Angeles counties have been placed under quarantine for the Mediterranean fruit fly (Medfly) following the detection of two wild flies in and around the city of Upland in San Bernardino County. The U.S. Department of Agriculture (USDA), California Department of Food and Agriculture (CDFA), and the San Bernardino and Los Angeles county agricultural …
Pummelo Interstocks Could Improve Performance of HLB Trees
By Manjul Dutt, Ethan Nielsen, Lamiaa Mahmoud, Maria Quirico and Jude Grosser All commercially cultivated citrus scion varieties are grafted onto rootstocks before being planted in the field. The rootstocks are selected based on specific desirable qualities (abiotic/biotic stress resistance) and the ability to produce a good crop in a specific location. The ideal rootstock confers disease resistance, hardiness, tolerance …
Scout for Problems, Even in CUPS
Growers should monitor for pests and diseases, even in the citrus under protective screen (CUPS) systems designed to keep HLB-spreading psyllids out of trees, according to entomologist Jawwad Qureshi. He told more than 25 people participating in a Dec. 1 virtual seminar that CUPS “are not foolproof systems,” and said citrus can’t be grown successfully without pest management. Qureshi works …
Getting New Varieties to Growers
The executive directors of two organizations that play a vital role in getting citrus varieties into the hands of growers summarize how the process works. They are John Beuttenmuller with Florida Foundation Seed Producers (FFSP) and Peter Chaires with New Varieties Development & Management Corporation (NVDMC). When University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) plant breeders propose …
How to Own Your Data and Profit From It
With the rapid development of artificial intelligence, data derived from farms might be more valuable than the crops growers produce. That’s because farmers can make money from their information when companies use it for other purposes, says a University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) scientist. The key for producers is to take ownership of their information. …
Douglas Plant Health Is Now DPH Biologicals™
Douglas Plant Health announced it has changed its name to DPH Biologicals. The new name recognizes the century-long commitment of its parent company, Douglas Products, to deliver effective and high-quality products to its customers while more clearly focusing on expanding its biologicals product platform to deliver value to customers by sustainably increasing productivity, yield and profitability. In 2018, the assets …
BMPs Addressed in Bill
Florida Sen. Ben Albritton filed a bill (SB 1000) to address issues related to best management practices (BMPs), the Nov. 19 Florida Citrus Mutual Triangle newsletter reported. According to the Triangle, the bill addresses several issues stemming from outdated science supporting University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) nutrient recommendation rates pertaining to BMPs. The bill also …
Texas Freeze Update: Fruit Is Sparse
Surviving citrus trees in South Texas have bounced back from extreme freeze during Winter Storm Uri in February, but fruit is sparse this season, said Texas A&M AgriLife Extension horticulturist Juan Anciso. An AgriLife Extension study estimated the severe freeze caused $230 million in damage to Texas’ citrus industry. Around 80% of the orange crop and almost 70% of …
Grapefruit Import Action Protested
The state agriculture commissioners for Florida and Texas recently urged U.S. Secretary of Agriculture Tom Vilsack to reinstate juice content requirements on grapefruit imports. They stated that a so-called “patch” issued earlier this year by the U.S. Department of Agriculture creates unfair advantages for Mexico and other countries over domestic grapefruit producers. “There appears to have been a ‘patch’ quietly …
Which Rootstock to Select
Valencia trees on high-vigor (left) and low-vigor (right) inducing rootstocks in a Central Ridge field trial. Note the higher yield efficiency of the smaller trees on the right and the leaning of these trees due to Hurricane Irma. By Ute Albrecht Rootstock selection is critical for longevity and productivity of a grove. The decision should be based on compatibility with …
Mandarin: ‘The Perfect Piece of Fruit’
Mandarin citrus is “the perfect piece of fruit,” Suntreat Packing Vice President Scott Owen told a recent Global Citrus Congress audience. “It tastes great. It’s easy to peel. It doesn’t have seeds. It’s a healthy snack, so moms love to give it to kids.” Mandarins are now a $1.8 billion market, compared to $1.2 billion for oranges, Owen said. He …
ACP Management With UV-Reflective Mulch and Flush-Timed Sprays
By Jawwad Qureshi, Lauren Diepenbrock and Davie Kadyampakeni The future of the Florida citrus industry depends on successfully replacing the present bearing tree inventory with new plantings and transitioning them into crop production. This would be a relatively routine process were it not for the ubiquitous presence of huanglongbing (HLB) and its vector, Asian citrus psyllid (ACP). Early infection can …
CREC Open House a Hit
The Citrus Research and Education Center (CREC) Nov. 16 open house and field day “was quite a crowded event. It went off really well,” CREC Director Michael Rogers reports. Rogers says the event drew about 200 industry members, as well as 150 CREC faculty, staff and students. The CREC is a University of Florida Institute of Food and Agricultural Sciences …
HLB Research Grants Go to UF/IFAS
The University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) was recently awarded more than $2.2 million in federal grants for HLB research. The funding came from the U.S. Department of Agriculture’s (USDA) National Institute of Food and Agriculture (NIFA) Emergency Citrus Disease Research and Extension Program. UF/IFAS researchers are also serving in leadership roles in two other NIFA-funded …





























