Some 44 percent of farmers worry about paying back their debts, up sharply from 28 percent in 2012 when grain prices were at record highs, says Farm Futures, based on its survey of 1,300 farms. “But the percentage of farms considered financially vulnerable remains very small,” says the magazine. Fewer than 2 percent of the farms in the survey said they were losing money or had a debt-to-asset ratio above 40 percent, the traditional benchmark for financial peril. Farm Futures said 11 percent of farms had high debt, compared to 9 percent at the end of 2013.