Four members of Congress have introduced a bill to include phosphate and potash on the final List of Critical Minerals of the U.S. Department of the Interior. The U.S. representatives are Kat Cammack of Florida, Barry Moore of Alabama, Elissa Slotkin of Michigan and Jimmy Panetta of California. “A nation that cannot feed itself is not secure,” Cammack said. “Without …
CRDF Research Priorities Include Trunk-Injection Therapy
The Citrus Research and Development Foundation (CRDF) held its June board of directors meeting in conjunction with Florida Citrus Mutual’s Florida Citrus Industry Annual Conference in Bonita Springs. The June gathering is when the CRDF board passes its budget for the next year. The board funded a project by Zhanao Deng, professor of environmental horticulture with the University of Florida …
Propagation Program Update on Donaldson and Other Trees
The Florida Citrus Commission (FCC) on June 14 received an update about a program for expedited propagation, in which 23 nurseries are participating. The goal of the expedited tree propagation program is to have several million HLB-tolerant or HLB-resistant trees planted in the next several years. Rosa Walsh, Florida Department of Citrus (FDOC) director of scientific research, provided the update. …
Angle Calls for Faster Research Progress on HLB
Scott Angle, University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) senior vice president for agriculture and natural resources, began the educational session during the Florida Citrus Industry Annual Conference with a message of urgency. He recognized the critical threat posed by HLB and said science could catch up to the problem. “Plant sciences are advancing globally at almost …
No Perfect Tree Spacing for Multiple Objectives
Looking for the perfect tree planting density to meet all of your objectives for citrus fruit quality and yield? That may not be possible, University of California Cooperative Extension’s Craig Kallsen said in a recent talk about planting density’s impact on navel orange yield and quality. The citrus and pistachio farm advisor for Kern County gave the example of a …
Eliminate Fire Ants to Improve ACP Control
By Lukasz Stelinski Ants can be involved in mutualistic relationships with honeydew-producing hemipterans. Ants provide protection against their natural enemies, and in return, hemipterans reward ants with honeydew. Such mutualism may affect population regulation of hemipterans by third trophic level predators. However, current knowledge regarding the effects of this food-for-protection mutualism of ants with Asian citrus psyllid (ACP, Diaphorina citri) …
Mandarin Production Set to Soar in Chile
In 2022–23, mandarin production in Chile is projected to increase by 26.5% and total 215,000 metric tons (MT), the U.S. Department of Agriculture Foreign Agricultural Service (USDA FAS) reported on June 2. The increase is driven by a rise in yields and new orchards reaching production. Mandarins include clementines and tangerines. Yields this year recovered as rainfall reached more normal …
Using Cover Crops to Improve Soil Health
By Sarah Strauss, Emma Dawson and Elena Karlsen-Ayala The term “soil health” has become increasingly popular in the last several years. While there are many definitions of soil health, one of the more commonly cited ones is from the U.S. Department of Agriculture (USDA) Natural Resources Conservation Service (NRCS). It defines soil health as “…the continued capacity of a soil …
New CUPS Research Results Reported
Positive results from experiments with photoselective shadecloth for color break and with plant growth-promoting bacteria for tree health were reported at a June 14 citrus under protective screen (CUPS) seminar. Presenter Arnold Schumann also gave an update on the generous fruit yields being generated in CUPS. Schumann is a University of Florida Institute of Food and Agricultural Sciences Citrus Research …
H-2A Visa Fees to Increase June 17
The U.S. Department of State (DOS) fees for petition-based non-immigrant visas for H-2A temporary foreign workers will increase on June 17, Florida Fruit & Vegetable Association (FFVA) reported. The final rule from DOS will increase the H-2A visa fees by 7.9%, from $190 to $205, less than DOS originally proposed in 2022. In its original proposal, DOS would have increased …
Grower Observations on OTC Trunk Injection
Highlands County Citrus Growers Association (HCCGA) President Aaron Nelson recently shared observations about trunk injection of oxytetracycline (OTC) for trees with HLB. The first formulations for citrus trunk injection became available in January. His observations follow: Over the course of the last six months there have been countless hours spent injecting millions of trees all over the state. What follows …
Deadline Set for Florida Land Protection Program
The Florida Department of Agriculture and Consumer Services (FDACS) announced that landowners can apply online to the state’s Rural and Family Lands Protection Program (RFLPP) until 5 p.m. on July 27. The department will review the applications for eligibility. The program, which partners with farmers and ranchers through conservation easements, aims to safeguard working agricultural operations. “Florida’s agricultural lands are …
House Passes Block Grant Assistance Act
Rep. Scott Franklin (FL-18) announced the House of Representatives passed the Block Grant Assistance Act on June 12. This critical bill provides needed authority for the U.S. Department of Agriculture (USDA) to issue block grants to growers devastated by Hurricanes Ian and Nicole. It now heads to the Senate for consideration. Those supporting the Block Grant Assistance Act include Florida …
Greater Lemon Production in Chile
Lemon production in Chile is expected to increase by 26.4% in 2022–23 and total 172,000 metric tons (MT), the U.S. Department of Agriculture Foreign Agricultural Service (USDA FAS) reported. Favorable climatic conditions and an increase in water supplies in the Coquimbo region pushed up lemon yields, and thus overall production. ACREAGEIn 2022–23, total area planted in Chile reached 8,080 hectares, …
Grower Achieves High Brix and Stops Drop
Low Brix has been a major problem plaguing the Florida citrus industry in recent years. While many growers are struggling to achieve the minimum required Brix level, this has not been an issue for citrus grower Chip Henry. He recently shared how he believes his organic production techniques contribute to high Brix as well as stopping premature fruit drop in …
Build Resilience in HLB-Affected Hamlin Trees
By Taylor Livingston and Tripti Vashisth Fighting HLB alongside weather disasters like freezes and hurricanes is leaving growers with little options for sustaining yields. The Hamlin sweet orange variety is known for higher susceptibility to HLB symptoms which cause rapid tree decline, including increased pre-harvest fruit drop and canopy loss. Production strategies that target fruit drop and canopy health improvement …
Integrating Use of Organic Soil Amendments and Weed Management
By Ute Albrecht, Ankit Pokhrel, Sarah Strauss and Ramdas Kanissery The soils in most Florida citrus production areas are sandy. They have less than 1% organic matter and a low cation exchange capacity (CEC). This makes them prone to nutrient leaching, especially after heavy rainfall events in the summer. HUMIC SUBSTANCESOne way to improve soils is by amending them with …
Drone Sprays for Psyllids Effective in Brazil
Using drones to apply chemical control for HLB-spreading psyllids in Brazil proved effective against adult insects, a Fundecitrus researcher reported. The researcher, Marcelo Miranda, said psyllid mortality was above 80% as a result of drone applications. Miranda’s work was pioneering in 2021. There was no record of the use of drones for the chemical control of the psyllid in western …
Know Your Purpose for Pruning
“Don’t prune if you do not know why you are pruning,” University of California Cooperative Extension’s Craig Kallsen cautioned in a June 6 webinar about pruning navel oranges. “It’s a lot of work and thus expensive.” “Generally, pruning of any kind reduces total fruit yield,” the citrus and pistachio farm advisor for Kern County stated. “The goal of pruning is …
HLB Researcher Honored
Fundecitrus researcher Marcelo Pedreira de Miranda has received the Outstanding Citriculture Engineer-Agronomist Award from the 48th Expocitrus and 44th Citriculture Week. The Brazilian entomologist, whose main studies are related to HLB, has worked at Fundecitrus since 2008. The award ceremony where Miranda was honored was part of the opening afternoon of the exhibition week and was attended by authorities and …





























