The weakness in corn and soybean prices, which has sent markets tumbling to lows not tested in years, is not a temporary situation and will likely persist well into 2015, according to Chad Hart, Iowa State University (ISU) Extension grain specialist.

"I don’t think we’ve reached the bottom yet, and this is not a just a one-year downturn," Hart said last week at the Iowa Farm Bureau Federation (IFBF) Economic Summit in Ames. "I think we’ll be dealing with these conditions for at least another...