Facing mounting bills and nervous creditors, U.S. farmers are beginning to sell off their crop stockpile - sometimes at a loss - and easing a months-long logjam prompted by the lowest grains prices in at least five years. Farmers now looking for cash to pay off debts and buy seeds for next season have been lured to sell by a four percent rise in corn futures over the past two weeks. That rise came after speculators with huge short positions were caught off guard when the U.S. Department of Agriculture (USDA) cut its corn and soybean harvest views on Jan. 12.