By Jude Grosser, Manjul Dutt and Fred Gmitter Exploiting citrus genetic diversity is the key to defeating HLB. Plant species have survived for millennia with evolving, hostile pathogens. This is possible through natural selection within genetically diverse populations. Tolerant or resistant individuals survive and intermate, get through the bottleneck, and the species evolves. Current citriculture is based on extremely limited …
FFAA Conference Takes Up Nutrient and Water-Quality Issues
Florida Fertilizer & Agrichemical Association members gathered in Palm Beach recently for the organization’s annual conference. The status of nutrient regulations and water-quality issues were at the top of the agenda for the group. Ernie Barnett, Florida Land Council president, addressed those issues during the conference. He has been involved with water issues in the state for more than 30 …
HLB-Tolerant Tree Program Progressing
The goal of an expedited tree propagation program is to have several million HLB-tolerant or HLB-resistant trees planted in the next several years. Greg Hodges, assistant director of the Florida Department of Agriculture’s Division of Plant Industry (DPI), said he believes that goal is attainable. Hodges and others presented the propagation plans to the Florida Citrus Commission (FCC) on July …
No Negative Cardiovascular Impacts for Children Drinking OJ
New research examining the cardiovascular health of young adults who consumed 100% orange juice (OJ) as children indicates no increased risk for high blood pressure or elevated blood lipid levels as a result. The research, published in the International Journal of Food Science and Nutrition, specifically looked at 100% OJ consumption during late childhood and early adolescence and its association …
Pay Attention to pH for Best Nutrient Uptake
There 17 essential elements that plants need to grow. Three of those elements come to plants via water and the atmosphere. The 14 other elements come from fertilizer applications. Almost all of those are dependent on soil pH to determine how well they are picked up by plants’ root systems. Getting the soil pH just right was discussed in the …
Seminar Schedule Announced for Citrus & Specialty Crop Expo
Growers and industry leaders should mark their calendars for this year’s Citrus & Specialty Crop Expo scheduled for Aug. 17–18 at the Lee Civic Center in North Fort Myers, Florida. Complimentary registration is available for all growers, packers, shippers, processors, association members and university researchers. Josh McGill, show director, discusses why industry members should attend this year’s event. “We’re really …
Final U.S. Citrus Forecast Has Several Changes
The final U.S. citrus forecast of the 2021–22 season, released July 12, projected production changes for crops in Florida, California, Texas and Arizona compared to the June forecast. FLORIDAFlorida’s all-orange forecast rose 1%, to 40.95 million boxes, due to a slight increase in non-Valencia orange production and a 1% increase in expected Valencia orange production. The Florida grapefruit production forecast …
Wildflowers May Benefit Citrus Groves
By Xavier Martini Planting wildflowers in and around fields is known to provide food resources and habitats for beneficial arthropods like pollinators and predators of pests. In two locations (Lake Alfred and Monticello), University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researchers tested whether planting native Florida wildflowers next to citrus grove windbreaks could improve natural pest control …
Evaluation of Citrus × Microcitrus Hybrid Scions
By Ute Albrecht, Anas Fadli and Chandrika Ramadugu Most commercially available citrus scion cultivars are highly attractive to the Asian citrus psyllid and susceptible to HLB. There are some citrus species, however, that are HLB tolerant or resistant. This may be because they are less attractive to the psyllids and/or because they restrict pathogen proliferation and therefore HLB disease development. …
Texas Mexfly Updates Issued
The U.S. Department of Agriculture’s (USDA) Animal and Plant Health Inspection Service (APHIS) in late June announced updates regarding Mexican fruit fly (Mexfly) quarantines in Texas: On April 29, APHIS and the Texas Department of Agriculture (TDA) established a Mexfly quarantine in Lyford, Willacy County, Texas. APHIS and TDA established the Lyford quarantine following the confirmed detection of a mature …
Citrus Crop Looks ‘Very Promising’
The sweltering heat being felt across the Southeast has done little to dampen the optimism shared by one citrus grower who believes this year’s crop is “very promising.” Kim Jones, who owns a citrus packing facility in Monticello, Florida, and is part-owner of a similar facility in Tifton, Georgia, discusses the state of this year’s crop in North Florida and …
Alternative Management Tools for ACP Under Development
By Lourdes C. Pérez Cordero Management of the Asian citrus psyllid (ACP) in the HLB era is incredibly important. This well-known insect can vector and facilitate the spread of the bacterium associated with HLB disease. Therefore, effective reduction of ACP populations can be beneficial for the citrus industry. But how exactly do we manage this pest? Unfortunately, there is not …
Keep Cool in the Heat of Summer
This summer has been a steamy one with some Florida locations breaking record highs. The latest episode of the All In For Citrus podcast took up the hot topic with Amir Rezazadeh, a University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) fruit and field crops Extension agent. He addressed how heat can affect citrus trees and people working …
Protecting Citrus Trees From Heat Stress
By Anirban Guha Heat stress could take a toll on citrus tree health and fruit yield. In Florida, the hot season lasts more than four months. Long, hot, oppressive summer days can heat up leaves and fruit and make the trees extra thirsty. Also, high soil evaporation, irregular rainfall and poor soil water-holding capacity can often lead to summer drought …
Barriers to Buying Orange Juice
The Florida Citrus Commission (FCC) recently heard a report that 13% of consumers surveyed in June said the increased price of buying orange juice (OJ) is a barrier. Florida Department of Citrus (FDOC) Director of Economic and Market Research Marisa Zansler provided that information to the FDOC’s governing board. Zansler also reported that 5% of consumers said they were less …
Glyphosate Decision Disappoints Ag Groups
Several national agricultural organizations issued a statement expressing disappointment over the U.S. Supreme Court’s recent glyphosate decision not to hear the case Monsanto vs. Hardeman, which pertains to state glyphosate health warnings. The statement read: “We are disappointed the Supreme Court has decided not to hear this case, which has significant implications for our global food supply and science-based regulation. …
Unlock Soil Nutrients to Benefit Your Citrus Grove
Florida citrus growers are facing a rising mound of challenges these days. With citrus greening disease (HLB) devastating groves, low supply, soaring fertilizer prices and a substantial increase in overall production costs, the current odds are stacked high against citrus growers. This is an industry in crisis. Fortunately, science is catching up with new solutions to combat these urgent issues. …
Citrus Health Benefits Research Update
Florida Department of Citrus-funded research into the health benefits of citrus products was among the highlights of a 2021–22 update the Florida Citrus Commission received in June. Rosa Walsh, director of scientific research at the department, provided the update. The update included three new publications on additional analyses of the Eurecat study on the impact of orange juice (OJ) and …
Combining IPCs and Brassinosteroids to Protect Young Citrus Trees
Research studies show that about 60% of Florida citrus trees are infected by HLB disease within six months of planting. By one year, 100% of citrus trees are infected. For that reason, the use of individual protective covers (IPCs) has become very popular to protect young citrus trees from the Asian citrus psyllid (ACP). The covers have proven to be …
Reduce HLB Pressure and Enhance Growth With Kaolin
By Christopher Vincent Kaolin particle film is a non-toxic tool to reduce psyllids and increase tree growth. Particle films are nothing more than a suspension of solid particles that make a “film” on the leaves after they dry. They work mostly by reflecting light. Kaolin is the most common type of particle film because the clay is mined directly and …