Protecting New Citrus Plantings and Resets From Weeds

Tacy Calliesweeds

By Ramdas Kanissery and Mongi Zekri Newly planted citrus trees and resets require more care and attention than established trees, especially when it comes to weed control. Florida’s weather conditions like high summer temperatures and often heavy rainfall make weed control in young groves difficult. Weeds compete with young citrus trees for nutrients, moisture and other resources, and may hinder …

H-2A Change May Aid Growers

Ernie NeffLabor

A temporary final rule change to some H-2A requirements is intended to help citrus and other agricultural employers avoid disruptions to their labor forces, protect the food supply and lessen impacts from the COVID-19 pandemic. The rule change was announced by the Department of Homeland Security with the support of the U.S. Department of Agriculture. Temporary foreign H-2A workers make …

Research on Water and Nutrient Retention

Ernie NeffNutrition, Research, Water

New research is using repurposed straw to create a tool that can help crops retain water and nutrients. Gang Chen, a professor of civil and environmental engineering at the Florida A&M University-Florida State University College of Engineering, led the research. It uses straw left over from processing crops like rice, wheat and corn to produce hydrogels. Hydrogels are molecules that …

Final Herbicide Strategy

Florida Sees Dips in Orange and Grapefruit Forecasts

Daniel CooperCrop Forecast

The 2019–20 Florida all-orange forecast released on April 9 by the U.S. Department of Agriculture is 70 million boxes, down 1 million boxes from the March forecast. This represents a 1 percent decrease in the expected orange crop size. Non-Valencia Oranges The forecast for Florida non-Valencia orange production is unchanged at 30 million boxes. The non-Valencia harvest is about over …

Sanitation, Social Distancing Increase in Citrus Industry

Ernie NeffCitrus

Social distancing and enhanced sanitation practices have been adopted in many Florida groves and facilities in an effort to curtail spread of the coronavirus. “Growers are making the necessary adjustments by increasing sanitation and keeping workers separated,” said Steve Smith, executive vice president of Gulf Citrus Growers Association. “The larger growers with multiple locations are keeping crews separated into small …

UF/IFAS Plant and Soil Diagnostic Labs Remain Operational

Tacy CalliesIndustry News Release

The University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) wants growers to know its diagnostic labs are continuing to operate during the COVID-19 crisis. Plant and soil health are critical to agriculture, an industry designated as essential during the pandemic. Therefore plant, soil and water testing will continue to be available. The following UF/IFAS labs are receiving and …

Fresh Industry Faring Well During Coronavirus

Ernie NeffFresh

So far, Florida’s fresh citrus industry reportedly has fared well throughout the coronavirus crisis, with fruit in high demand and no major problems blamed on the pandemic. Doug Bournique, executive vice president of the Indian River Citrus League, said consumer demand has kept packers in his region busy. “Their demand is strong from the supermarkets, the orders are up, and …

planting

Rootstock Selection Made Easier

Ernie NeffRootstocks

The recently released fourth edition of the Florida Citrus Rootstock Selection Guide is “way more user friendly” than past editions, one of its authors says. University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researcher Rhuanito “Johnny” Ferrarezi says “a completely redesigned website” is what makes the guide so useful for growers. Ferrarezi works as an assistant professor at …

fresh

Keeping Fresh Fruit Marketable

Ernie NeffFresh

Mark Ritenour with the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) discusses research efforts to keep Florida’s fresh fruit marketable. Ritenour is a postharvest horticulturist at the Indian River Research and Education Center. Ritenour begins with maximum residue limit requirements for chemicals in fresh citrus for export. A UF/IFAS website provides pesticide residue limits by various major …

Root Hair Enhancement With Low Phosphorus Concentrations

Tacy CalliesNutrition

By Laura Waldo and Arnold Schumann It has been the accepted belief for many years that citrus varieties and rootstocks do not develop root hairs. However, research has shown that root hair growth can be stimulated when soil phosphorus (P) concentrations are extremely low. It is possible that in Florida, citrus roots could fail to produce root hairs due to …

crop forecast

March Citrus Crop Forecast Sees Slight Decreases

Daniel CooperCrop Forecast

Mark Hudson of the U.S. Department of Agriculture’s National Agricultural Statistics Service (USDA/NASS) reported the latest update to the 2019-2020 citrus crop forecast on March 10. Non-Valencia Oranges The Florida non-Valencia forecast is lowered 1 million boxes to 30 million boxes. The row count survey conducted Feb. 25-26 showed 98 percent of the early-midseason rows are harvested. California remained at …

citrus

Citrus Nutrition Box Program Yielding Results

Daniel CooperHLB Management, Industry News Release, Nutrition

(UF/IFAS) — A recent program encouraging Florida citrus growers to learn more about the nutrient management of their groves is yielding promising results. Nearly 200 growers and industry representatives attended four workshops in late 2019 to learn about the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Citrus Nutrition Box program. UF/IFAS faculty distributed 117 free boxes of …

graft

Some Scions Incompatible With US-1283 Rootstock

Daniel CooperIndustry News Release, Rootstocks

By Kim D. Bowman and Ute Albrecht The US-1283 rootstock was released by the U.S. Department of Agriculture (USDA) in 2014, based on field performance with Hamlin 1-4-1 sweet orange in trials at two different locations in Florida severely affected by huanglongbing disease. One of these trials was in St. Lucie County and of 14 years duration, while the second …

PIECES OF THE PAST: Paying Tribute to Pioneers

Tacy CalliesPieces of the Past

Recently, I came across an old letter A.F. Camp wrote to John T. Lesley in 1979. I thought it was so interesting that I shared it with the members of the Florida Citrus Hall of Fame Selection Committee. I wanted them to think about how hard things were “back in the day” in considering the contributions of some of the …

orange

Florida Citrus Forecast: Grapefruit Up, Oranges Down

Daniel CooperCrop Forecast

The 2019–2020 citrus crop forecast released Feb. 11 by the U.S. Department of Agriculture (USDA) showed changes for Florida orange and grapefruit production levels. ORANGES The February forecast for Florida oranges is 2 million boxes lower than last month’s figures. However, if realized, the Florida all-orange forecast of 72 million boxes will be up slightly from last season’s final production. …

trained

Trained Dogs Are the Most Efficient Way to Hunt Citrus Industry’s Biggest Threat

Daniel CooperCitrus Greening, HLB Management, Industry News Release

(USDA/ARS) — Dogs specially trained by Agriculture Research Service (ARS) scientists have proven to be the most efficient way to detect huanglongbing— also known as citrus greening — according to a paper just published in the Proceedings of the National Academy of Sciences. Currently, the only solid hope of curtailing the spread of citrus greening is to eliminate trees with the …

Citrus Pest Management: More Than Just Psyllids

Tacy CalliesPests

By Lauren Diepenbrock Non-psyllid, soft-bodied insects are common in Florida citrus. Their ability to cause damage varies by pest, pest population size, tree age and tree variety. Soft-bodied insects include scales, mealybugs, whiteflies and aphids, all of which are small and can be hard to detect until the telltale sign of sooty mold development appears on their excrement (honeydew) or …

Orange Opportunities

Tacy CalliesVarieties

New sweet orange cultivars for processing can be harvested throughout the Florida citrus season. By Jude Grosser, Fred Gmitter and Bill Castle Florida orange juice has always been the gold standard among the growing portfolio of fruit juices and blends available to consumers. However, the now endemic citrus greening disease or huanglongbing (HLB) threatens this status by causing reduced fruit …

Citrus Greening Bacterium Is Now Available in Culture — So What’s Next?

Tacy CalliesCitrus Greening, Research

By Nabil Killiny A dynamic research collaboration between several labs at Washington State University (Gang, Beyenal and Omsland labs), University of Arizona (Brown lab) and University of Florida (Killiny lab) recently reported an important step in the long-sought culture of the bacterium [Candidatus Liberibacter asiaticus (CLas)] associated with huanglongbing (HLB). The work, published in the journal Biofilm, describes a new …

florida

Florida Grapefruit Production Up

Daniel CooperCrop Forecast

The 2019–20 Florida citrus crop forecast released on Jan. 10 by the U.S. Department of Agriculture (USDA) held steady for oranges, tangerines and tangelos while grapefruit saw gains. Oranges The Florida orange forecast is 74 million boxes, unchanged from the December forecast. If realized, this will be 3 percent more than last season’s final production. The forecast consists of 32 …