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GAINESVILLE, Fla. — A team of scientists led by University of Florida Institute of Food and Agricultural Sciences researchers has found a faster and more precise way to detect salmonella in beef and chicken, a finding that could help prevent major illnesses.
Salmonella is the lauding cause of bacteria-associated foodborne illnesses in the United States, according to the study. Thus, early detection of the pathogen, by a rapid and sensitive test is important to prevent the illness.
In a newly published study, researchers artificially contaminated food with salmonella. They then tested the food samples using Salmonella-specific antibodies combined with a unique signal amplification technique. Their test found salmonella present after 15 hours and removed other microorganisms that sometimes clutter laboratory results. This is shorter than the two to three days it takes to detect salmonella in a culture, the study shows.
LIVE OAK, Fla. — During most of this last year, Suwannee County farmer Sammy Starling never had to guess when he did—or didn’t—need to water his corn. With a new smart-agriculture technology, he could access soil moisture readings right from his phone, with updates every three hours.
This information helped Starling determine when to turn on the irrigation system and when to skip a cycle. “It’s a window to the underground world,” he said.
Thanks to a University of Florida Institute of Food and Agricultural Sciences Extension experimental trial, Starling was one of three farmers in the Suwannee River Valley who got the chance to test drive this water-saving technology.
By showing farmers how to use and benefit from these sensors, the trial encouraged producers to adopt best management practices (BMPs) set out by the Florida Department of Agriculture and Consumer Services, said Patrick Troy, regional specialized agent in row crops who has spearheaded the initiative.
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GAINESVILLE, Fla. — A chemical treatment known as a bactericide could help preserve citrus trees from the potentially deadly and costly greening disease, a new University of Florida Institute of Food and Agricultural Sciences study shows.
Citrus is estimated as a $10.9 billion-a-year industry in Florida and the finding could be key to helping the state’s citrus growers and its economy. Citrus greening has cost Florida $3.6 billion in economic damage since it was first discovered in 2005, according to previous UF/IFAS studies. It is projected that more than 80 percent of citrus trees have been infected by greening.
Nian Wang, a UF/IFAS associate professor of microbiology and cell science, led the latest study, which found that when a bactericide – in this case, oxytetracycline — is injected into the trunk of greening-infected citrus trees, it helps keep the trees alive by thwarting greening, also known as Huanglongbing, or HLB.
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GAINESVILLE, Fla. — A UF/IFAS horticultural sciences professor, known worldwide for research on growing plants in space, has won the 2016 Jeffries Aerospace Medicine and Life Sciences Research Award.
The award is given to a member of the aerospace exploration community who embodies the innovation and insight exemplified by American physician, John Jeffries, who was the first person — back in 1786 — to utilize aeronautics to collect scientific data.
Robert Ferl, who researches how plants can grow in space, won the award. Specifically, Ferl was cited for conducting cutting-edge space biology research and for mentoring others in spaceflight research, pushing the boundaries of where biology can travel.
“I was surprised and enormously honored to win the award,” said Ferl, who was recognized this month in Vienna, Austria. “For a space biologist, recognition by the engineers — the rocket builders, the space suit designers, the people who plan the missions — is a huge honor that acknowledges the role of fundamental science in moving life into space.”
FORT PIERCE, Fla. – An entomologist with 10 years of research focused on the state’s iconic citrus industry has joined the faculty of the University of Florida Institute of Food and Agricultural Sciences’ Indian River Research and Education Center.
Named Entomologist of the Year in 2012 by the Florida Entomological Society, Jawwad A. Qureshi was selected for a new position as assistant professor of entomology at UF/IFAS IRREC, near Fort Pierce, Florida. The UF/IFAS Fort Pierce location is part of the university’s statewide service to agriculture, providing research, extension and education for producers.
“Dr. Qureshi is one of the world’s few entomologists who have expertise in integrated pest management focused specifically on citrus,” said UF/IFAS IRREC interim director Ronald D. Cave. “His work is much needed in the region known worldwide for the highest quality fresh citrus product.”
According to Cave, Qureshi’s expertise with insect pest management for the citrus industry is critically valuable to the state’s citrus industry at a time when huanglongbing (HLB), also known as citrus greening, has had a negative impact on the crop statewide.
GAINESVILLE, Fla. — A UF/IFAS-developed web tool – which has been shown to save Florida strawberry growers $1.7 million a year – is now being used in several other states, including Maryland, Georgia, South Carolina and California.
Florida’s strawberry crop is worth $300 million a year. It’s also important to the national economy. For example, in 2014, the United States produced 3 billion pounds of strawberries, valued at nearly $2.9 billion, according to the Agricultural Marketing Resource Center, a division of the U.S. Department of Agriculture. Florida ranks second to California in strawberry production.
While gaining a foothold in other states, the tool is getting more useful, thanks to work by University of Florida Institute of Food and Agricultural Sciences researchers. Scientists have found a promising model to simulate leaf wetness in plants of strawberries.
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GAINESVILLE, Fla. — With citrus growers trying to save their groves in the wake of the deadly greening disease, a University of Florida Institute of Food and Agricultural Sciences researcher has found a new technique that could help growers answer a vexing question – why so much fruit is dropping to the ground prematurely.
If we know why fruit is dropping, we can better figure out what caused it to drop – factors such as temperature, wind, humidity, rainfall, citrus greening or other factors, said Wonsuk “Daniel” Lee, a UF/IFAS professor of agricultural and biological engineering.
While there is no known cure for greening, it’s important to know its locations and how much damage the disease caused at those sites so growers can mitigate the disease, a new study led by Lee says.
One indicator of the severity of damage is the number of dropped fruit. The other is how much the fruit has decayed once on the ground.
GAINESVILLE, Fla. — While almost half of Floridians acknowledge buying genetically modified foods, a recent survey by the Center for Public Issues Education in Agriculture and Natural Resources at the University of Florida reveals that most people want to know much more about those foods.
“The study shows that Floridians believe they don’t know much about genetically modified foods and their benefits,” said Joy Rumble, assistant professor in agricultural education and communication at the UF Institute of Food and Agricultural Sciences. “Many people are favorable to supporting research, and they think it’s essential that government support it. Floridians see a place for GM foods, but they do have hesitations.”
The PIE Center surveyed 500 Floridians on their perceptions of genetically modified foods. Respondents were largely unsure about the potential benefits of genetically modified food, with more than 40 percent neither agreeing nor disagreeing that food technology such as GMOs allows people to live longer or better lives.
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GAINESVILLE, Fla. — A new test could save time and money diagnosing plant viruses, some of which can destroy millions of dollars in crops each year in Florida, says a University of Florida Institute of Food and Agricultural Sciences researcher.
In a newly published study, Jane Polston, a UF/IFAS plant pathology professor, examined several ways to detect the DNA genome of begomoviruses. These viruses have emerged over the last 30 years to become plant pathogens that threaten crop production in tropical and sub-tropical regions globally.
Polston and her research colleagues found that a certain test called “recombinase polymerase amplification” identified the cause of a disease faster and cheaper than the commonly used polymerase chain reaction (PCR) test – or “assay,” as scientists call them.
UF/IFAS scientists learned of this new type of test that’s fast, sensitive and cheaper than some other methods, and they adapted the new technology and modified it to test for several whitefly-transmitted viruses found in Florida, Polston said.
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GAINESVILLE, Fla. — University of Florida Institute of Food and Agricultural Sciences researchers have found a new way to detect immature citrus 83 percent of the time, which lets growers know where to apply fertilizer and water and perhaps save on labor costs for the $10.9 billion a year Florida industry.
By detecting green, immature citrus more accurately and efficiently, growers can plan when and where to apply nutrients when fruit is growing and estimate their yield and profit before harvest, said Daniel Lee, a UF/IFAS professor of agricultural and biological engineering.
Using a consumer-grade digital camera, Lee and his colleagues calculated color differences between the fruit and non-fruit objects, and identified fruit using a pre-determined fruit template. They also removed any incorrectly detected fruit via a shape analysis, Lee said. In a newly published study, scientists took 126 images of fruit on trees and detected 83 percent immature citrus, using a camera and the new algorithm. This method is different than the previous ones, which can detect fruit from the images taken farther away from the trees.