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 …
CRDF Has Spent $149 Million
The Citrus Research and Development Foundation (CRDF) has spent $149 million during 10 years of existence, Chief Operating Officer Rick Dantzler reports. He adds that 457 projects have been funded. Dantzler made a report on total CRDF activities to the group’s board of directors in November. He also announced a new slate of CRDF officers. “This has been quite an …
The ABCs of Psyllid Management
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 …
Growers Discuss BMPs
Two growers participating in a Dec. 16 program about local agricultural issues shared some of the best management practices (BMPs) their companies employ. The event was hosted by the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Southwest Florida Research and Education Center (SWFREC) in Immokalee. Danny Sutton, president and general manager of Alico Citrus, said Alico sprayers …
Soil, Cover Crops and Compost
Soil organic matter benefits citrus, but there isn’t much of it in Florida groves, says University of Florida Institute of Food and Agricultural Sciences soil microbiologist Sarah Strauss. Most Florida citrus land typically contains only 1 to 2 percent soil organic matter, says Strauss, who works at the Southwest Florida Research and Education Center. “Areas near the Everglades with muck …
New Varieties and Juice Blends Discussed
Growers recently sampled and graded new fruit varieties, as well as some juice blends, at University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) fruit display events. UF/IFAS plant breeder Jude Grosser commented on the fruit varieties and juice following a sampling event at the Citrus Research and Education Center. “It’s kind of neat because when we first started …
How Much Can Florida Growers Afford to Spend on Caretaking Processed Orange Groves?
By Ariel Singerman The decrease in prices for processed oranges this season presents growers with challenging management decisions. Last October, the Florida Department of Citrus (FDOC) projected an average 2019–20 price for early and mid-season oranges of $1.62 per pound solids, while for Valencia oranges the forecast was $1.78 per pound solids. Those projected prices represent a 26 percent decline …
All In For Citrus Podcast, December 2019
The December All In For Citrus podcast has critical insights on citrus production, including contract issues, a view from Brazil, soil health research and the Winter Weather Watch program. Numerous Florida citrus growers have no contracts and no offers, or very low offers, for their juice oranges this season. University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Citrus …
UF Researcher Seeks Biological Control of ACP
In the latest All In For Citrus podcast, Ozgur Batuman talks about his research into biological control of the Asian citrus psyllid (ACP). Batuman is an assistant professor at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Southwest Florida Research and Education Center. ACP control is necessary for management of citrus greening disease, or huanglongbing (HLB). Batuman’s …
Nutrition Sampling Program Update
Approximately 110 Florida citrus growers picked up nutrition sampling kits they’ll use to help ensure their groves are receiving proper nutrition this season. The kits are part of the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Citrus Nutrition Management Program launched this fall. The kits provide growers everything they need to collect four leaf samples and one …
CUPS Featured at Field Day
Growers already producing fresh citrus under protective screen (CUPS) were among approximately 30 attendees at a CUPS field day Dec. 12 at the Citrus Research and Education Center in Lake Alfred, Florida. Lead CUPS scientist Arnold Schumann with the University of Florida Institute of Food and Agricultural Sciences and other researchers described activities in the screened-in facility. Attendees saw much …
Inside Brazil’s Citrus Industry
By Stephen H. Futch and Rhuanito S. Ferrarezi Many changes have taken place in the Brazilian citrus industry over the past 20 years as growers battle pests, diseases and market challenges. Throughout this process, the industry has encountered difficulties but has continued to maintain production through innovative practices that are founded in science, economics and sustainability. This article provides an …
Thoughts on the Scion and Rootstock Selection Process
By Bill Castle If timing is everything, then let me suggest that the timing is right to consider the following proposals about making scion and rootstock choices in the Florida citrus industry: What to plant? That is a huge question that could be initially addressed by a one-day program carefully planned as to objectives, format and participants. I was reminded …
Florida’s Citrus Industry: A Balanced Perspective
The Washington Post recently published a “well-balanced article” about Florida’s citrus industry, telling its woes as well as progress against HLB, says Michael Rogers. “We hosted a reporter from the Washington Post back in July of this year,” says Rogers, director of the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Citrus Research and Education Center. “I think …
Sneak Peek: December 2019 Citrus Industry Magazine
As the year races to a finish, growers will want to make sure they are up to date on the “food-safety marathon” described in the December issue of Citrus Industry magazine. The University of Florida’s (UF) Travis Chapin, Matt Krug and Michelle Danyluk discuss what growers need to know about the implementation of the Produce Safety Rule. Topics addressed include …
A Closer Look at CUPS-Grown Grapefruit
By Arnold Schumann, Ariel Singerman and Yu Wang Grapefruit production in Florida has been drastically reduced by huanglongbing (HLB) disease, from 40.9 million boxes in 2003–04 to 4.5 million boxes in 2018–19, according to the U.S. Department of Agriculture. Grapefruit varieties are particularly vulnerable to HLB due to cumulative losses from stunted tree growth, low fruit yield, high-percentage fruit drop, …
All In For Citrus Podcast, November 2019
The All In For Citrus podcast for November is packed with updates on various aspects of citrus production. Citrus Research and Education Center Director Michael Rogers tells how the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) helped a Washington Post reporter write a well-balanced article about the Florida citrus industry and HLB. Rogers points out that the …
CTV Remains a Threat With Sour Orange
Shortly before HLB was discovered in Florida in 2005, many trees on sour orange rootstock were lost to citrus tristeza virus (CTV), which is transmitted by the brown citrus aphid. Sour orange rootstock was extremely susceptible to CTV, so many growers stopped using the rootstock. “Switching to non-sour orange rootstock eliminated the danger from CTV decline,” University of Florida Institute …
FDOC Orange Tax Unchanged
Florida orange growers will pay the Florida Department of Citrus (FDOC) a 7-cents-per-box tax in the current season for their juice oranges. After considering higher rates for months, the Florida Citrus Commission finally agreed to keep the existing 7-cent rate at its meeting on Nov. 20. The commission did, however, indicate its willingness to spend up to an additional $2 …
Viruses in the Gut of Asian Citrus Psyllid: Friends or Foes?
By Ozgur Batuman and Amit Levy Management options for huanglongbing (HLB) are limited and rely heavily on insecticides for controlling Asian citrus psyllid (ACP) populations, even when integrated with other cultural control methods. Chemical strategies are expensive and, if not rotated, can contribute to the development of chemical resistance among ACP populations. In some cases, long-term chemical applications may have …