Farm commodities tumbled on Thursday despite weaker US Dollar. Market participants awaited data from Pro Famer Midwest Crop Tour and USDA export sales report due on Friday.
Wheat dropped ahead of the key crop reports due on Friday. Limiting the downswing, SovEcon cut its forecast for Russia's crops to 39 million tonnes.
Corn plunged the most in more than two months on speculation that US crop damage was not as severe as previously expected.
Sugar slumped further after Unica, the Brazilian sugar industry group, reported that mills in the Centre South region harvested by 14.2% more cane in the first half of August than in the same period in 2011.
Coffee inched down despite lower supplies from Nicaragua. Nicaragua coffee production is expected to miss government's estimates amid heavy rains and strong winds.