All grains finished in the red today.

Markets have been sensitive to headlines, with today's news that talks with China yielded only promise to have more talks sending grain lower.

It will be interesting to watch crop planting progress, with 5% of soybeans in the ground as of last week, which is right on target and 17% of corn planted versus 27% average.

World Agriculture Supply and Demand Estimate report is due out Thursday, May 10. Analysts predict corn yields tart at 174.1 and 48.8 soybeans.

The forecast for most of the nation is warmer than usual over the next few days.