Effects of Compost and Organic Amendments on Weed Control

Josh McGillResearch, weeds

By Ramdas Kanissery and Mahesh Bashyal Using compost and soil amendments is beneficial to Florida citrus groves. Florida soils are sandy and have a low organic matter and cation exchange capacity. Adding compost and organic amendments (e.g., humic acid) can enhance the soil’s ability to retain water and nutrients. These practices can also boost soil microbial activity and improve soil …

Stelinski and Wang Among UF Faculty Honored

Josh McGillAwards

The American Association for the Advancement of Science (AAAS) has elected 19 University of Florida faculty to its newest class. The honor recognizes extraordinary impact and achievement across disciplines. Two of those honored, Lukasz Stelinski and Nian Wang, work at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Citrus Research and Education Center.  Stelinski is a professor …

IPCs

Keeping Trees Healthy After Removing IPCs

Josh McGillIPCs, Research

Researchers and growers have found that individual protective covers (IPCs) can keep young trees free of HLB for two or more years while providing additional benefits like improved tree growth. The IPCs work by keeping HLB-infecting Asian citrus psyllids out of the tree canopies. But trees outgrow the covers and must eventually be removed. Researchers have found that about 60% …

Alico Shares Quarterly Update

Josh McGillfinancial, hurricane, Industry News Release

Alico Citrus harvested 841,000 boxes of early- and mid-season (early/mid) oranges for the three months ended Dec. 31, 2022. That’s a decrease of approximately 6.1% from the same period in the prior fiscal year. The company will complete harvesting of early/mid oranges in the current fiscal year. It said it will recognize an overall decrease in the number of early/mid …

Trialing Tree Immunizations for HLB, Xylella

Josh McGillHLB Management, International, Research

Australia’s Hort Innovation has announced an $8.7 million investment to trial tree immunizations that protect Australia’s horticulture industries against the deadly huanglongbing (HLB) and Xylella diseases (including citrus variegated chlorosis). Hort Innovation is a grower-owned, not-for-profit research and development corporation for Australia’s horticulture industry. Hort Innovation Chief Executive Brett Fifield said the investment aims to safeguard key Australian horticulture industries by …

Prepare for the Possibility of Postbloom Fruit Drop 

Josh McGillDiseases, Tip of the Week

By Megan M. Dewdney Postbloom fruit drop (PFD) is a sporadic flower disease. It is primarily caused by the fungus Colletotrichum acutatum. While infections only occur on flowers, the fungus is present on trees throughout the year. It survives by producing resting structures on leaves and stems. How the inoculum survives multiple years between infections is still unclear. The fungus …

Natural Compounds Might Fight HLB

Josh McGillHLB Management, Research

The U.S. Department of Agriculture (USDA) has awarded Florida International University (FIU) scientists $500,000 to investigate natural compounds that could suppress or even eliminate the bacteria that causes HLB. FIU Institute of Environment researcher Kateel Shetty is leading the search for an antimicrobial compound that could help citrus growers. The FIU team’s theory is that if they can identify a …

Psyllids and HLB in Georgia Citrus

Josh McGillGeorgia, Psyllids

When commercial citrus acreage started migrating north some years ago, the big question was: To what extent would Asian citrus psyllids (ACP) and HLB migrate with the crop? With citrus getting well established in South Georgia, the pest and disease are there, but not yet at devastating levels like in Florida. Johnathan Oliver, an assistant professor of fruit pathology with …

Old Variety Gets a New Look

Josh McGillAll In For Citrus Podcast, Varieties

The Parson Brown is an early-season sweet orange that J.L. Carney identified in 1875. By the 1920s, the variety had become a popular cultivar among growers, but eventually plantings declined as Hamlin became the go-to selection for the early season. However, because of its apparent tolerance to HLB, Parson Brown is again stirring interest among growers. Manjul Dutt, assistant professor …

Legislation Introduced in Hurricane Relief Effort

Josh McGillhurricane, Legislative

Rep. Scott Franklin (FL-18), Rep. Debbie Wasserman Schultz (FL-25) and Sen. Rick Scott (R-FL) introduced the Block Grant Assistance Act of 2023, a critical bill to ensure the U.S. Department of Agriculture (USDA) can provide needed relief to agriculture producers devastated by Hurricanes Ian and Nicole. This bill will provide the agriculture secretary needed authority to provide block grants to …

Trunk Injection for HLB: What You Need to Know

Josh McGillHLB Management

Some Florida citrus growers have recently started oxytetracycline hydrochloride (OTC-HCl) injection into tree trunks to help manage HLB. Other growers are considering it. Researcher Ute Albrecht offered a list of best practices for the product’s use during a Jan. 31 presentation in Immokalee. The presentation was made at the University of Florida Institute of Food and Agricultural Sciences Southwest Florida …

Orange Light: New Name for Uncle Matt’s Product

Josh McGillIndustry News Release, Orange Juice, Organic

Uncle Matt’s Organic is reintroducing its Matt50™ Orange Juice (OJ) Beverage as Orange Light. Orange Light contains half the sugar and calories as regular OJ. It is boosted with vitamin C, plus prebiotics and probiotics for gut health and immune support. Orange Light is available at Whole Foods Market and Sprouts Farmers Market locations nationwide and is also available for purchase directly …

Key Terms to Know When Using Pesticides

Josh McGillCEU, Pesticides

By Ajia Paolillo Editor’s note: This article grants one continuing education unit (CEU) in the Core category toward the renewal of a Florida Department of Agriculture and Consumer Services restricted-use pesticide license when the accompanying test is submitted and approved. As a certified restricted-use pesticide applicator, it is your responsibility to use pesticides safely, not only for yourself but for …

Sting Nematodes and IPCs

Josh McGillIPCs, Pests, Tip of the Week

By Larry Duncan and Fernando Alferez Newly planted citrus trees are far less tolerant of pests and diseases than when mature. Sting nematode (Belonolaimus longicaudatus) was not considered a serious economic threat to Florida citrus until successive hard freezes in the 1980s caused widespread replanting of groves. Patches of stunted, declining trees caused by the irregular distribution of sting nematodes …

Fiberstar Launches Organic Citrus Fiber

Josh McGillIndustry News Release, Organic

Fiberstar, Inc. has launched the Citri-Fi 400 series, a line of organic citrus fibers. The new product line is in response to the increasing demand for natural, sustainable and organic food ingredients. Market drivers fueling the uptick in demand include a growth in consumer health and wellness initiatives and limited availability of hydrocolloids due to supply-chain challenges. Other drivers include …

PIECES OF THE PAST: A Tall Tale in the Name of Marketing

Josh McGillMarketing, Pieces of the Past

By Brenda Eubanks Burnette I came across a gift fruit brochure for Pioneer-Chester Groves, which had an interesting story on the inside cover regarding the history of the company. The story, by Dr. Bob (Schlernitzauer), is as follows: “Back in the days when the land along the Indian River was nothing but jungle, and the white settlers were few, a …

CRDF

CRDF Board Off to a Busy Start in 2023

Josh McGillCRDF, Research

The Citrus Research and Development Foundation (CRDF) kicked off the year with its monthly board meeting in January. The board invited three researchers who had submitted pre-proposals to submit full proposals during the meeting. One proposal will study if the ingestion of oxytetracycline hydrochloride (OTC-HCl) will minimize the amount of Candidatus Liberibacter asiaticus (CLas) in the gut of “hot” (or …

Considerations for Managing Citrus Black Spot

Josh McGillDiseases

In Florida, citrus black spot (CBS) is present primarily in commercial groves in five southwest counties (Charlotte, Collier, Glades, Hendry and Lee). The disease can cause up to 60% yield loss in severe situations with little management, researcher Megan Dewdney reported in January. More commonly though, growers with infestations experience fruit drop levels of 10% to 20% in a minimally …

H-2A rule

Legal Arguments Start Over Streptomycin in Citrus

Josh McGillLegal, Pesticides

The Ninth Circuit Court of Appeals was scheduled to hear oral arguments in late January challenging the U.S. Environmental Protection Agency’s (EPA) approval of the antibiotic streptomycin as a pesticide on citrus crops. The lawsuit, brought by farmworker and public-interest groups, argues the use of streptomycin on citrus crops is unlawful under the Federal Insecticide, Fungicide, and Rodenticide Act and …

Sneak Peek: February 2023 Citrus Industry

Josh McGillDiseases, Sneak Peek, weeds

With more growers incorporating compost and organic amendments into their production, weed management is receiving increased attention. University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) authors Ramdas Kanissery and Mahesh Bashyal take on this topic in their article in the February 2023 issue of Citrus Industry magazine. While compost and organic amendments can increase soil health and boost …