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 …
Suspension of OJ Brix Level Sought
For most months during the 2020-21 Florida citrus season, oranges did not meet the federal minimum standard of 10.5 degrees Brix for not-from-concentrate orange juice (OJ). According to a slide shown during Florida Citrus Mutual’s recent annual meeting, the average Brix level for oranges during the season was 10.45. Brix is a measure of the sugar content of juice. Consequently, …
All In For Citrus Podcast, June 2021
This month’s All In for Citrus Podcast details the results and benefits growers are getting from the citrus nutrition box program. Before hearing from the coordinators of the program, Citrus Research and Education Center Director Michael Rogers shares updates on key events coming up this summer for the industry. The first is the Citrus, Vegetable and Specialty Crop Expo in …
CLM and Canker: Dangerous Summer Duo
Chris Oswalt details the connection between citrus leafminer (CLM) and citrus canker in the May/June Central Florida citrus Extension newsletter, Citrus from the Ridge to the Valley. He also offers some management tips. “I don’t think we can overstate the effect of leafminer damage on citrus foliage and the increased development of citrus canker lesions on damaged leaves,” the multi-county …
FFVA Creates Stuart Scholarship
The Florida Fruit & Vegetable Association (FFVA) has created the Mike and Karen Stuart Scholarship. The scholarship encourages and supports college students who intend to pursue a career in the specialty crop industry. The specialty crop industry is an area of agriculture focused on vegetables, citrus, tropical fruit, berries, sod, sugar cane, tree crops and more. Applicants may be interested …
CRAFT Foundation: Two-Year Program Update
The Citrus Research and Field Trial (CRAFT) Foundation Inc. is in its second year of operation. CRAFT Foundation Executive Director Kristen Carlson gave a program update during the recent Florida Citrus Show. CRAFT was designed to work as a cooperative effort between growers and researchers in order to provide examples of economically feasible production management practices and programs for Florida …
How OJ Sales Boomed in the Pandemic
The boom in OJ (orange juice) sales during the COVID-19 pandemic was highlighted during Marisa Zansler’s report to the Florida Citrus Commission in May. Zansler is the Florida Department of Citrus’ (FDOC) director of economic and market research. Prior to the pandemic, orange juice sales had decreased annually by an average of 5.5.% each year, Zansler reported. She noted …
BMPs Give Growers Less Peace of Mind
Editor’s note: A correction has been made to this article. It previously stated that “UF/IFAS’ current highest recommendation for phosphorus on citrus is 16 pounds per 100 pounds of fruit per acre annually if soil tests and tissue samples indicate insufficient phosphorus content.” The information has been corrected to 16 pounds per 100 boxes. For years, participation in Florida’s Best …
Gulf Citrus Growers Hold Annual Meeting
The Gulf Citrus Growers Association (GCGA) held its 35th annual meeting at the Verandah Country Club in Fort Myers on June 9. At the meeting, the GCGA board elected officers to serve the organization for the 2021-2022 season. Ron Mahan of Tamiami Citrus, LLC was elected president. Other officers elected to lead the regional citrus association are Vice President Danny …
Unlocking the Citrus Microbiome
Yunzheng Zhang, Nian Wang and colleagues recently published an article, The Citrus Microbiome: From Structure and Function to Microbiome Engineering and Beyond, in the Phytobiomes Journal. It outlines the structure and potential functions of the plant microbiome. It explains how this knowledge can lead to new engineering feats and a greater understanding of the plant microbiome. Insights into the microbiome …
Inspect Your Irrigation System Regularly
By Ajia Paolillo Throughout the year, it is a good practice to check your irrigation system for leaks, wear, corrosion and other physical damage that can limit the efficiency of the system. Proper irrigation provides the tree with the water it needs, especially during periods of drought and during the important stages of flowering, fruit set and enlargement, and leaf …
Grapefruit Challenges and Opportunities
A recent report summarizes the U.S. grapefruit market’s challenges, including citrus greening disease and hurricanes, and opportunities. Lijun (Angelia) Chen and Lisa House with the University of Florida Institute of Food and Agricultural Sciences authored the report, titled “An Overview of the Grapefruit Market in the U.S.” “The U.S. grapefruit industry has been facing fierce challenges in both production and …
Combating California Red Scale
California red scale (CRS) is one of the key pests for growers in the San Joaquin Valley, home to 75% of the state’s citrus production. CRS is a sap-sucking insect that attacks all parts of citrus trees. It causes dieback of branches, yield loss and downgrading of fruit. According to Sandipa Gautam, University of California assistant research entomologist at the …
Fruit Drop: When to Harvest
By Ariel Singerman and Stephen H. Futch In the 2020–21 citrus season, fruit drop has severely impacted orange yield in Florida. According to a recent U.S. Department of Agriculture (USDA) citrus crop forecast, the estimate of fruit drop for early/mid-season and Valencia oranges was 43% and 34%, respectively. Moreover, according to some growers, the level of fruit drop has been …
Brutal Honesty on HLB
Rick Dantzler did not follow normal protocol in providing an update about his organization’s efforts. Dantzler, chief operating officer of the Citrus Research and Development Foundation (CRDF), didn’t talk glowingly about CRDF’s accomplishments. Rather, he started off by telling how far the Florida citrus industry has declined since CRDF was formed in 2009 primarily to find a solution to HLB. …
Renewed Effort to Stop Chinese Citrus Imports
U.S. Senators Marco Rubio and Rick Scott of Florida recently urged U.S. Secretary of Agriculture Tom Vilsack to re-implement a prohibition on the importation of five varieties of citrus from China. The U.S. Department of Agriculture (USDA) in April 2020 decided to allow the importation of the Chinese varieties. “The USDA’s decision continues to risk an increase in unfair trade competition …
The Secret Ingredient of Developing New Citrus Rootstocks
By Bill Castle Creation, evaluation, release and commercial acceptance are dynamic, interactive activities that together constitute new rootstock development. Underpinning each of them is a commonly overlooked and rarely mentioned activity, professional judgment. Yet, it is something everyone has and recognizes as getting better with time and experience. It is a skill developed and refined over time from knowledge of …
How the FDOC Will Use Extra Funding
With Gov. Ron DeSantis’ recent approval, the Florida Department of Citrus (FDOC) has $12 million in state funding for the 2021-22 season. With the additional funding, the FDOC plans to expand its programs, reaching more consumers in order to drive sales of Florida orange juice (OJ). The FDOC will also increase marketing programs for fresh grapefruit, oranges and tangerines, similar …
Court Rejects EPA’s Aldicarb Approval
The federal Court of Appeals in the District of Columbia on June 7 rejected the Environmental Protection Agency’s (EPA) approval of the pesticide aldicarb on Florida oranges and grapefruit, the Center for Biological Diversity reported. The ruling came in response to a lawsuit filed in March by farmworker and conservation groups after the EPA approved the use of up to …
Be Prepared for Hurricane Season
By Fernando Alferez and Mongi Zekri The National Oceanic and Atmospheric Administration has predicted another above-normal Atlantic hurricane season. While hurricanes have always been a risk or danger to Florida, their threat is growing. Although experts do not anticipate the historic level of storm activity seen in 2020, it only takes one storm to severely impact and devastate citrus groves. It …