Grains all higher early and then markets turn mixed as some of the grain contracts hit chart resistance and see farmer selling.  Weather concerns continue globally and in the U.S. continue to support the market as well as renewed talk of China soybean buying.  But what are cash basis levels doing on grains and when should farmers sell?  Nick Tsiolis, Farmers Keeper, shares insight.  See omnystudio.com/listener for privacy information.