Monday, January 16, 2012
"A relatively small percentage of introduced species are truly problematic and a threat to native biodiversity," says Tomas A. Carlo, Penn State assistant professor of biology. "Most introduced species become 'naturalized' and fully integrated into their new communities." (more)
Friday, November 18, 2011
The challenge of weeds that have become resistant to glyphosate -- the active ingredient in Round-Up herbicide -- has become an evolving national threat, with new challenges emerging and spreading annually. At least three glyphosate-resistant species on the horizon for Pennsylvania require new strategies to combat them, according to a specialist in Penn State's College of Agricultural Sciences. (more)
Tuesday, September 14, 2010
When Penn State weed scientist David Mortensen told members of the U.S. House Oversight Committee this summer that the government should restrict the use of herbicide-tolerant crops and impose a tax on biotech seeds to fund research and educational programs for farmers, it caused quite a stir. The growing problem with weeds that have become resistant to the most common herbicide used by American corn, soybean and cotton farmers has gotten so serious that new strategies are needed to combat them, he contended. (more)
Thursday, July 29, 2010
Folks with questions about managing their crops or weeds can get answers at the Crops, Soils and Conservation Tent at Penn State's Ag Progress Days Aug. 17-19. Visitors to the crops and soils area can also take the "Weed ID" quiz and/or bring weeds with them for the experts to identify. (more)