Category Archives: Lawn and Garden

Research aids in the fight against invasive species

Invasive Species Potluck – Virginia Tech from VirginiaTech on Vimeo.

From soybean fields to hemlocks forests, experts from the College of Agriculture and Life Sciences and Virginia Cooperative Extension are developing ways to deal with and control the hitchhikers, interlopers, and otherwise nasty pests known as invasive species.

“The top 10 pests that we deal with now are non-native, and we spend lots of money to control them,” said Eric Day, an entomologist with Virginia Cooperative Extension and manager of the Insect Identification Lab in the Department of Entomology.

Meanwhile Assistant Professor Jacob Barney in the Department of Plant Pathology, Physiology, and Weed Science, collaboratively studies another invasive species — Johnsongrass — a weed that chokes out crops on farmland because of its fast-growing and extensive root structure.


Jacob Barney, assistant professor in the Department of Plant Pathology, Physiology, and Weed Science, is just one of a team of faculty members studying invasive species and protecting Virginia producers from their destruction.

Barney will study what makes Johnsongrass a globally successful weed and use the research to establish a model for studying other weeds and how to predict invasiveness.

Another most-wanted intruder, the brown marmorated stink bug, is an annoyance to homeowners, but the real problem is the millions of dollars in damage it causes to crops across the Mid-Atlantic region.

“We have very few agricultural commodities that this bug does not attack,” said Associate Professor Tom Kuhar, an Extension entomologist.

Kuhar and his team of graduate students are studying aspects of the stink bug’s biology and ecology, its insecticide efficacy, and sustainable practices for managing it in vegetable crops.

Day recently returned from Berks County, Pennsylvania, where a pest that attacks grapes and other stone fruit crops like peaches has been identified: the spotted lanternfly.

“It’s a two-prong effort, identifying them and also making people aware of their presence,” Day said. “Virginia Cooperative Extension and our partner organizations play a large role in helping to get the word out about these invasive species so producers and the general public can control them.”

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History provides backdrop for pesticide training

An instructor shows how to use a pesticide sprayer.

An instructor provides participants with a demonstration of advanced sprayer technology that uses pulse modulation to prevent pesticide spray drift.

Though the Virginia Tech Pesticide Program was established in 1964, Virginia’s history of pesticide safety education goes back to the late 1800s. Today the Virginia Cooperative Extension program trains pesticide applicators by blending history with modern safety measures.

VTPP trains more than 20,000 agricultural producers and pest managers in 27 different certification categories of private and commercial pesticide application during a reoccurring four-year cycle.

In Virginia, private and commercial pesticide applicators must be certified using a 14-point core curriculum. The training is based on a 300-page core manual that’s approved by its partner, the Virginia Department of Agriculture and Consumer Services.

VTPP also offers 22 commercial applicator training manuals, training aids, online training, and onsite instruction led by local Extension agents. Through a train-the-trainer workshop held every September, VTPP provides agents with the most up-to-date information about pesticide application technology, regulations, and safety.

“Agents are the key educators in the program,” said Mike Weaver, program director. “They provide training in more than 100 localities and host or support over 200 workshops annually. The program wouldn’t work without their dedication, talent, and hard work.”

Weaver often shares Virginia’s rich history in pesticide education during pesticide safety education workshops.

Researcher Shawn Askew shows participants weeds and grass.

Shawn Askew, turfgrass Extension specialist, presents weed identification and management information to Extension agents and turfgrass industry professionals.

For example, in 1889 William Bradford Alwood went to an Albermarle Fruit and Grape Growers meeting and warned members about the use of arsenic and other poisons on their crops. In 1892 Alwood and Walker Bowman, Virginia’s first pesticide residue chemist, addressed the public’s fear of pesticide residue on grapes by testing them and finding them safe to eat. These two men became the first pesticide safety educators in the commonwealth. Sharing this information sparks the interest of trainees and shows the significance of pesticide safety education over the years.

Another creative use of history was VTPP’s revival of Larry the Label. Larry the Label was a cartoon used by the U.S. Department of Agriculture and national Cooperative Extension Service for public service announcements from the 1950s through   the 1970s to warn the public to read pesticide labels.

In July 2014, VTPP launched Larry the Label Jr. on Facebook to once again teach the public about pesticide safety and protecting human and environmental health.

As regulations change over time, keeping people and the environment safe from the misuse of pesticides continues to be the focus of VTPP and Virginia Cooperative Extension.

“We do what we do because it’s required, but also because it’s the right thing to do,” Weaver said.

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