GAINESVILLE, Fla. — What economists call the “green industry” – nursery and greenhouse production, landscape services and horticultural product distribution − is bringing plenty of green to a lot of people across the country. A new study by the University of Florida Institute of Food and Agricultural Sciences shows that the industry generated $196 billion in revenues annually, and more than two million jobs in the United States.
“Our study demonstrated that this industry is a very large employer,” said Alan Hodges, Extension scientist with the UF/IFAS food and resource economics department and lead author of the study. “It exists in virtually every community in the U.S. The rise of large retail chain stores with garden departments has made plants and other horticultural products more readily available to consumers than ever before.”
Green industry products include sod, flowers, bedding plants, tropical foliage, trees and shrubs, among other types of plants. The industry also includes many businesses that provide services such as landscape design, installation and maintenance, plus firms — such as lawn and garden stores — for wholesale and retail distribution of horticultural products, Hodges said.
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GAINESVILLE, Fla. — Climate change is rapidly warming lakes around the world, threatening freshwater supplies and ecosystems, according to a new study spanning six continents.
More than 60 scientists took part in the research, published in the journal Geophysical Research Letters and announced today at the fall meeting of the American Geophysical Union in San Francisco. The study authors include Karl Havens, director of the Florida Sea Grant program and a professor with the University of Florida Institute of Food and Agricultural Sciences.
The full study, titled, “Rapid and highly variable warming of lake surface waters around the globe,” is available free of charge here, or at the following link: http://onlinelibrary.wiley.com/doi/10.1002/2015GL066235/full.
The study showed that lakes are warming an average of 0.6 degrees Fahrenheit each decade. That’s greater than the warming rate of either the oceans or the atmosphere, and it could have profound effects, scientists say.
At the current rate, algal blooms, which can ultimately rob water of oxygen, are projected to increase 20 percent in lakes over the next century. Algal blooms that are toxic to fish and other animals would increase by 5 percent. And these rates imply that emissions of methane, a greenhouse gas with 25 times the heat-trapping capacity of carbon dioxide, will increase 4 percent over the next decade.
“Lakes are critically important to people, because they are sources of drinking water, irrigation water and fisheries,” said Havens, an ecologist with the UF/IFAS School of Forest Resources and Conservation. (more …)
GAINESVILLE, Fla. — The next time a storm tears up your yard, let an expert assess the damage to any trees. A study from the University of Florida Institute of Food and Agricultural Sciences shows that homeowners perceive the risk of a damaged tree differently than trained professionals.
The survey of tree experts and homeowners in the Tampa Bay area assessed the perceptions of both groups when it came to assessing tree damage, said Andrew Koeser, an assistant professor in environmental horticulture and study author.
“While there are a number of factors tied to tree risk, most respondents were fixated on tree defects,” Koeser said. “Only experienced professionals considered other pertinent factors—namely whether the tree was actually a threat to a person, vehicle or house.”
GAINESVILLE, Fla. — You can take the “interim” off of Sandra Wilson’s title. She’s now chair of the UF/IFAS Department of Environmental Horticulture.
Named interim chair in November 2014, Wilson was named to the permanent position in September by Jack Payne, UF senior vice president for agriculture and natural resources.
“Dr. Wilson was a natural choice to lead our Environmental Horticulture Department,” Payne said. “Combine her outstanding teaching and research record, the leadership she has shown and the fact that the faculty support her, and we knew right away Dr. Wilson would lead the department to unparalleled heights.”
Wilson came to Gainesville after 15 years as an environmental horticulture faculty member at the UF/IFAS Indian River Research and Education Center.
GAINESVILLE, Fla. — A UF/IFAS scientist, who has helped design a tree risk-management app and is co-writing tree identification books, has been named as a co-recipient of the International Society of Arboriculture’s Early Career Scientist Award.
The award is given to professionals showing exceptional promise in arboriculture research.
Andrew Koeser, an assistant professor in environment horticulture at the UF/IFAS Gulf Coast Research and Education Center in Baum, is also a faculty member at the UF/IFAS Center for Landscape Conservation and Ecology.
One of Koeser’s projects is a mobile app for risk-assessment data collection and mapping. He is also co-writing a series of tree identification books unique to the different regions of Florida.
Koeser hopes his research enhances efforts to improve risk-assessment and storm response processes. The app project is designed to give cities an easy and efficient means of taking inventory and assessing the safety of their trees. Should a severe storm hit, the data collected will help managers more quickly estimate debris levels for cleanup.
“My research in tree risk assessment carries on the goal of enhancing current efforts being made to improve assessment processes,” said Koeser, a faculty member with the University of Florida Institute of Food and Agricultural Sciences. “I think the app project has the potential to gather user data needed in order to make reasonable assessments of potential tree failure.”
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GAINESVILLE, Fla. — All it takes is six questions. You answer those, and University of Florida researchers say contractors will know how willing you are to upgrade your home for energy efficiency and whether you can afford the improvements.
Heating and cooling make up 54 percent of American households’ utility bills, a primary concern for Randy Cantrell, a UF/IFAS assistant professor and Extension specialist in housing and community development. For some people, their monthly energy bill comes as sticker shock. But we all react differently when we open the envelope, and Cantrell calls that response “botheredness.”
Cantrell wanted to know two things: how bothered people are by their energy bill and whether they can afford to do something about it. So he and Brad Sewell, a graduate research assistant, used a web-based survey of about 1,000 American homeowners to divide them into groups based on utility bill botheredness and budgetary constraints for household upgrades.
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GAINESVILLE, Fla. — Looking to save money and water when you irrigate? UF/IFAS scientists have developed an app for that. Want to know what plants to grow in your garden? You guessed it: UF/IFAS has an app for that as well.
UF/IFAS’ so-called “smart irrigation apps” include an urban lawn app that estimates how long you’ll need to water your lawn to meet current plant water demand. It uses a simplified approach for automated irrigation systems. This urban lawn model uses meteorological data to compute a simple, real-time weekly water balance, said Kati Migliaccio, UF/IFAS associate professor in agricultural and biological engineering and lead designer of the app. Find these apps and others at Smartirrigationapps.org.
“The turf app provides a free resource to determine a schedule to apply the right amount of water to landscapes, which is personalized based on user inputs,” Migliaccio said.
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CITRA, Fla. — Sometimes, the old-fashioned ways are the best ways.
Back before chemical pesticides and herbicides, farmers had to come up with ways to kill the weeds that took over their fields. One method used “back in the day” was letting pigs loose in fields that were not being used for crops for a season and allowing the pigs to do what they do naturally: dig up the roots of weeds and fertilize the land.
In the last year, Greg MacDonald, a weed science researcher with the University of Florida’s Institute of Food and Agricultural Sciences, decided to give the method a try to combat nutsedge, a weed that looks like grass and is so resilient it can sprout up through plastic row-crop coverings and even the plastic lining of above-ground pools. (more …)
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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GAINESVILLE, Fla. — Forest managers would prefer to use prescribed burns every few years to help prevent costly wildfires and rebuild unhealthy ecosystems, but hurdles like staffing, budget, liability and new development hinder them, a new University of Florida study shows.
Fighting wildfires is costly. The U.S. government now spends about $2 billion a year just to stop them, according to the National Interagency Fire Center. That’s up from $239 million in 1985.
Leda Kobziar, an associate professor of fire science and forest conservation in UF’s School of Forest Resources and Conservation, led a web-based survey of 523 public and private land managers across Region 8 of the U.S. Forest Service, which consists of 13 Southern states, including Florida. She and her colleagues wanted to see whether front-line experts think prescribed burns prevent wildfires and maintain vegetation and healthy ecosystems. And if they do, what are the circumstances under which such burns work best.
As it turns out, prescribed burns should be done every few years to prevent wildfires or reduce their severity, depending on weather and the type of ecosystem land managers are trying to protect, according to the survey.