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IFAS News

University of Florida

Study: Brain activity can ID potential buyers

Topic(s): Economics, Families and Consumers, IFAS, Research

 

Brandon McFadden

McFadden

GAINESVILLE, Fla. — Brain activation may reveal people who are less certain about a product and indicate they are more easily swayed by an ad, a University of Florida researcher says.

In a study published today in the journal PLOS ONE, researchers found that activation of the prefrontal cortex of the brain identifies people who are more responsive to campaign advertisements.

Studies in social sciences, including agricultural economics, often rely on survey data, which counts on participants’ honesty. But tracking blood flow in the brain gives much more tried-and-true data, said Brandon McFadden, a UF assistant professor of food and resource economics and one of the researchers for the study. This study may help researchers understand brain function while people decide what to buy, he said.

“This allows us to peek behind the curtain,” McFadden said.

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Low-altitude aerial images allow early detection of devastating avocado disease

Topic(s): Agriculture, Crops, Economics, IFAS, New Technology, Pests, RECs, Research

LAUREL WILT - CAMERA STUDY - 052015 (over Homestead) (2)

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GAINESVILLE, Fla. — Low-altitude aerial images can detect laurel wilt, a devastating avocado disease, giving growers an early way to identify diseased trees and perhaps help reduce losses to the $100 million-a-year economic impact avocados provide Florida.

Reza Ehsani, an associate professor in agricultural and biological engineering at the UF/IFAS Citrus Research and Education Center in Lake Alfred, used a multi-spectral camera that distinguishes between laurel wilt-affected trees and healthy ones.

Images taken with the camera from a helicopter have significant implications in the management of this important disease and for the commercial avocado industry in Florida. Ehsani said he expects the Federal Aviation Administration to open U.S. airspace for commercial use of unmanned aerial vehicles, which could be equipped with such cameras, by 2017.

“Ultimately, we think that small UAVs, equipped with the right multi-band camera, can be used for scouting for this disease, which could potentially be very cost-effective,” Ehsani said. “The results of this study will enable growers or service companies that use UAVs to detect this disease at an early stage.”

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UF/IFAS study: Tiny wasp controls nuisance whitefly

Topic(s): Agriculture, Biocontrols, Economics, Environment, Pests, Research

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GAINESVILLE, Fla. — A wasp the size of a pin head may control the nuisance Rugose spiraling whitefly, which leaves a sticky white mess that becomes covered in black mold on everything from plants to cars and pools, University of Florida scientists say.

“Although the Rugose spiraling whitefly damages plants, what really gets people worked up is that it’s a huge nuisance because it makes a mess,” said Catharine Mannion, an entomology professor at the UF/IFAS Tropical Research and Education Center in Homestead, Florida. “You get a sooty mold on everything. It’s hard to get pools cleaned. People start chopping their trees down.”

But a new breakthrough shows the tiny wasp encarsia noyesi reduces the population of the Rugose spiraling whitefly, according to a new UF/IFAS-led study funded by the Farm Bill, through the U.S. Department of Agriculture.

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UF/IFAS study: Non-native grass invasion, prescribed fires, deadly ecological combination

Topic(s): Agriculture, Biocontrols, Conservation, Economics, Environment, Forestry, Green Living, Invasive Species, Research

 

INVASIVE BURNS 051115 from Flory

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GAINESVILLE, Fla. — Invasive stiltgrass is bad enough by itself, crowding out native plant and insect species in about 25 eastern U.S. states, including Florida. It can also inhibit tree seedling survival and growth, and it can change the availability of nitrogen in the soil.

In general, invasions of non-native plant species can reduce biodiversity and alter ecosystems. In 2013, 1,585 prescribed fires were used to burn about 290,000 acres in eight eastern U.S. states. Scientists have used prescribed fires to effectively control some invasive plants, but new evidence suggests fires may promote stiltgrass invasions.

If land managers perform prescribed fires — normally used to manage ecosystems and prevent wildfires – in stiltgrass-invaded areas, native trees can be killed by the more intense fires caused by burning stiltgrass, said Luke Flory, an assistant professor of ecology at the University of Florida Institute of Food and Agricultural Sciences.

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New UF/IFAS-developed avocado app helps guide irrigation

Topic(s): Agriculture, Conservation, Crops, Economics, IFAS, New Technology
In this photo released by the University of FloridaÕs Institute of Food and Agricultural Sciences, agricultural economist Edward ÒGillyÓ Evans, left, and tropical fruit expert Jonathan Crane examine avocados in a research grove at UFÕs Tropical Research and Education Center in Homestead Ð Thursday, Jan. 15, 2009. The pair helped write a paper on the potential economic impact of laurel wilt, a disease threatening FloridaÕs avocado crop. If the disease reaches Miami-Dade County, it could destroy half the crop and cost the state $27 million. (AP photo/University of Florida/IFAS/Thomas Wright)

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GAINESVILLE, Fla. — University of Florida Institute of Food and Agricultural Sciences faculty have developed a new app for avocado growers that provides an irrigation schedule so users save an estimated 20 to 50 percent on the water they apply to their orchards.

“Weather changes daily, and the app takes into account these changes in the irrigation schedule it provides,” said Kati Migliaccio, an associate professor in agricultural and biological engineering at UF’s Tropical Research and Education Center in Homestead, Florida.

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Fishermen, communities need more than healthy fish stocks

Topic(s): Aquaculture, Conservation, Economics, Environment, Families and Consumers, Food Safety, IFAS, Nutrition, Research

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James Anderson

The Alaska salmon fishery is touted as one of the best in the world. When measured with an ecological yardstick, it is – fish stocks are healthy and the fishery is certified by the Marine Stewardship Council as consistently meeting rigorous biological standards. Fish are individually counted as they swim upstream to ensure there are enough to breed.

But Alaska salmon falls behind some of the world’s fisheries in how it benefits local fishermen, processing workers and nearby rural communities, according to a new assessment that ranks the vitality of a fishery by looking at its economic and community benefits as well as its ecological health.

“We wanted to develop a new set of metrics to determine how well fisheries management systems work and to test what factors are most effective in improving them,” said James Anderson, professor of Food and Resource Economics and director of the new Institute for Sustainable Food Systems at the University of Florida Institute of Food and Agricultural Sciences. Anderson is a lead author of a paper published May 6 in the journal PLOS ONE, describing the new methodology.

 “These new Fishery Performance Indicators (FPIs) are designed to help us evaluate a fishery system’s performance toward achieving economic, community and ecological sustainability – the ‘triple bottom line,'” he said.

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UF/IFAS experts available for 2015 hurricane season

Topic(s): Crops, Disaster Preparedness, Economics, Environment, Extension, Families and Consumers, Forestry, IFAS, Weather

Videos available:

 

GAINESVILLE, Fla. — The following University of Florida Institute of Food and Agricultural Sciences sources are available to speak to news media about a range of storm- and hurricane-related topics:

Hurricane and other natural disaster preparation: Mike Spranger, a professor in family, youth and community sciences, can give tips on how to prepare for any kind of natural disaster. He adapted a Gulfwide version of the Homeowners Handbook to Prepare for Natural Hazards for Florida residents. The book has basic background on tornados, tropical storms, hurricanes, floods and wildfires, and covers everything from hurricane clips to what to keep in your pantry and what to take with you during an evacuation. 352-273-3557; spranger@ufl.edu.

Rebuilding/maintaining sand dunes: Deborah Miller, a professor of wildlife ecology and conservation based at UF’s West Florida Research and Education Center in Milton, has studied the best ways to rebuild sand dunes destroyed by hurricanes. 850-983-7128, ext. 104; dlmi@ufl.edu.

Tree protection: Ed Gilman, a professor with the environmental horticulture department, is an expert in tree health and storm damage to trees. He can address topics such as mitigation efforts, restoring trees following storms, tree replacement, pruning methods to reduce damage potential, preventive pruning to protect homes and other personal property, and evaluation of tree health after hurricanes. 352-262-9165; egilman@ufl.edu.

Hurricane effects on Florida agriculture: Jonathan Crane, a professor and tropical-fruit crop specialist at UF’s Tropical Research & Education Center in Homestead, has studied how hurricanes affect Florida agriculture. His research covers damage to fruit crops and to grove infrastructure such as irrigation systems due to high winds and flooding. 305-246-7001, ext. 290; jhcr@ufl.edu.

Hurricanes and pets/farm animals: John Haven directs the UF College of Veterinary Medicine’s All Animals, All Hazards Disaster Response Team and has participated in animal care operations related to hurricanes, fires and disease outbreaks. After leading the college’s responses to Hurricanes Charlie, Frances and Jeanne, he organized this formal veterinary emergency response team consisting of faculty, staff and students. He is a member of the State Agriculture Response Team, coordinator for the State Veterinary Reserve Corps disaster response team, and an Incident Command System Instructor. 352-294-4254, ext. 3154; havenj@ufl.edu.

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$2 million UF/IFAS study to focus on antibiotic resistance; $500,000 study on taste retention

Topic(s): Agriculture, Announcements, Crops, Economics, Environment, Food Safety, IFAS, Nutrition, Research

Kwang Cheol (K.C.) Jeong, Ph.D. UF/IFAS Photo. 2011.Kevin Folta.  UF/IFAS File Photo.

Jeong, left, and Folta, right

GAINESVILLE, Fla. — A University of Florida scientist will try to figure out how antibiotic-resistant microorganisms get into cattle. Another will study how to get tomatoes and strawberries to retain their flavors and last longer.

The two vastly different questions will be the focus of separate studies led by UF Institute of Food and Agricultural Sciences faculty members. The National Institute of Food and Agriculture, part of the U.S. Department of Agriculture, has awarded KC Jeong $2.19 million to study the cattle antibiotic question. NIFA also has awarded Kevin Folta and Thomas Colquhoun $500,000 to investigate the strawberry/tomato issue.

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UF/IFAS Extension program to control Tropical Soda Apple earns national award

Topic(s): Agriculture, Announcements, Biocontrols, Economics, Environment, Extension, Honors and Appointments, IFAS, Invasive Species

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GAINESVILLE, Fla. — St. Lucie County ranchers have saved an estimated $850,000 a year, thanks to University of Florida experts who taught them how to release a beetle to eat an invasive plant that normally elbows out valuable cattle forage.

“Using the Tropical Soda Apple beetle has resulted in significant cost savings for ranchers while at the same time protecting the environment by reducing the need to use herbicides,” said St. Lucie County Extension agent Ken Gioeli, part of the UF Institute of Food and Agricultural Sciences.

The program, which uses beetles to biologically control the Tropical Soda Apple (TSA) on St. Lucie County ranches, has won the Association of Natural Resource Extension Professionals National Innovative Program Award. That’s the fourth straight year UF’s St. Lucie County Extension Office has won a national award.

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6 UF/IFAS faculty named as Research Foundation professors

Topic(s): Agriculture, Announcements, Biofuels, Citrus, Crops, Economics, Environment, Food Safety, Forestry, Honors and Appointments, IFAS, Livestock, New Technology, RECs, Research

Robert Fletcher photographed for the 2011 FAES Awards.  UF/IFAS Photo by Tyler JonesRESEARCHFOUNDATION - Danyluk 041015Jim Jones (left), Bin Gao (seated), and Pratap Pullammanappallil.  Innovation Awards Portrait.  UF/IFAS File Photo.Zhenli He. Associate Professor, Soil and Water Science.Jose SantosRESEARCHFOUNDATION - Peter 041015
Pictured top (left to right) Robert Fletcher, Michelle Danyluk and Bin Gao; second row (left to right) Zhenli He, Jose Eduardo Santos and Gary Peter.

GAINESVILLE, Fla. — Six University of Florida Institute of Food and Agricultural Sciences faculty members, who are trying to solve global issues like food safety and environmental sustainability, have been named as UF Research Foundation Professors for 2015-18.

The recognition goes to faculty who demonstrate a distinguished record of research and a strong research agenda that’s likely to continue to distinguish them in their fields.

“When I look at the breadth of research exemplified by these talented scientists, I am reminded of the complexity and breadth of the IFAS mission, and how fortunate we are to have people of such high caliber working in a university that places such a high value on research and invests so heavily in the research enterprise,” said Doug Archer, UF/IFAS associate dean of research.

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