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By Megan M. Dewdney Algal spot has not been seen frequently for many years, but in the last few years I have been getting more questions about identification and management. The disease is caused by a green alga, Cephaleuros virescens. The alga is not considered a parasite, as it grows superficially, but it does cause damage to trees if left …
The March issue of Citrus Industry magazine focuses on fertilization and other production practices to keep citrus trees healthy. Tripti Vashisth’s article summarizes a three-year University of Florida (UF) study that looked at 10 different controlled-release fertilizer treatments in two different locations. The research results revealed that when it comes to citrus nutrition, one size does not fit all. Surprisingly, …
By Clint Thompson Last weekend’s freezing temperatures in parts of South Georgia had no effect on the state’s satsuma crop, according to Lindy Savelle, president of the Georgia Citrus Association. The bulk of Georgia’s citrus crop — 80 to 90 percent — is satsuma oranges, a cold-tolerant citrus that can withstand temperatures as low as 15 degrees Fahrenheit. Savelle said …
By Clint Thompson Citrus greening disease is not yet a problem in Georgia. Jonathan Oliver, University of Georgia (UGA) assistant professor and small fruits pathologist, wants to keep it that way. The disease that has impacted citrus production in Florida for more than a decade has only been observed in backyard plantings in Georgia. However, since the state is expected …
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 …
By Amit Levy, Ozgur Batuman, Peggy Sieburth and Lauren Diepenbrock Citrus leprosis is an exotic viral disease not currently present in Florida. This disease is of interest since it was reported in citrus in Florida and Brazil in the early 1900s, where it caused great crop and tree losses, but it was eliminated from Florida in the early 1960s. Currently, …
Tim Hurner will be inducted into the Florida Association of County Agricultural Agents (FACAA) Hall of Fame at the annual Extension Professional Associations of Florida meeting in Panama City in September. Hurner served Highlands County as the citrus Extension agent and county director for more than 40 years. He was inducted into the Florida Citrus Hall of Fame in 2019. …
By Megan Dewdney and Evan Johnson In 2019, the trend of fewer problems with foliar fungal diseases for Florida citrus continued, which was good news for the industry. Despite the El Niño conditions during the spring, little postbloom fruit drop (PFD) was observed because the temperatures were low (< 75 F) when it rained during bloom. The southern parts of …
The Highlands County Youth Citrus Project is a 4-H program that teaches 8- to 18-year-old students how to successfully grow citrus in Florida. Thirty-four citrus trees (Valencia on C-54 Carpenter) were entered into the program this year. All of the trees were grown in a protective cover and tested by the state of Florida. The orange trees will be on …
By Clint Thompson Georgia growers interested in adding citrus to their farming operation are invited to the fourth annual Georgia Citrus Association Conference on Monday, Feb. 24, at the University of Georgia (UGA) Tifton Campus Conference Center. Scientists from UGA and the University of Florida, as well as producers who are already growing citrus trees, will be in attendance to …
The February issue of Citrus Industry magazine lets growers know what diseases to be on the lookout for this season and how best to spot them in the grove. University of Florida (UF) researchers Megan Dewdney and Evan Johnson give citrus growers tips on planning for disease management in 2020 in their article. Citrus canker, greasy spot, melanose, black spot …
By Brenda Eubanks Burnette Here we are in 2020. It’s hard to believe that time is flying by so fast. I’m now in the older generation! This makes me want to preserve as many memories as possible before they’re lost and forgotten. Approximately 30 people showed up at a recent Florida Citrus Hall of Fame Oral History Luncheon at the …
By Clint Thompson Georgia’s citrus industry is expected to double in acreage by the end of 2020, according to Lindy Savelle, president of the Georgia Citrus Association. The projected increase from 1,000 to nearly 2,000 acres this year presents the growers with an interesting challenge as they prepare for when these trees start producing fruit. “We project by the end …
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 …
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 …
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 …
By Brenda Eubanks Burnette When Citrus Industry magazine was launched 100 years ago, the founders had many fears as to whether the focus on a single crop was too narrow to be successful. It would be something I clearly remember the Frisbie family discussing with staff at different times over the years. However, at the close of the publication’s first …
By Lukasz L. Stelinski and Jawwad A. Qureshi Getting rid of Asian citrus psyllids (ACP) from your grove is almost like trying to remove the sand from a beach. You can make a huge noticeable impact, but getting every last grain of sand will be impossible. What makes the prospect of ACP management so complex is achieving it in a …
By Chip Henry When I chose to produce citrus organically nearly five years ago, I accepted the responsibility of implementing a nature-based protocol of production for my grove. Subsequently, I searched for products that were available to address the aspects of nutrition, soil health, undesirable vegetation suppression and insect control. The process of “turning over every rock” was imperative, with …
By Tara Wade On Dec. 16, 2019, all commercial motor vehicles (CMVs) are mandated to carry electronic logging devices (ELDs). These ELDs will replace paper logs and attach to trucks’ engines. They easily record idle time, driving time, miles driven, vehicle movement, and on- and off-duty time — making it easier for law enforcement to check if drivers are compliant …
