US soya prices rose 0.5 percent on Tuesday with the USDA set to trim its South American soya crop estimates amid the worst drought in decades drying up grain prospects in Argentina, the world's No 3 soya exporter. The US Agriculture Department will release its monthly crop estimates of US 2008/09 grain supply and demand stocks and global grain production at 8:30 am EST (1330 GMT).
Dwindling soya prospects in South America and China's aggressive buying of US soyabeans are shrinking stocks of soya.