Grains end lower on Monday on weather forecasts for rain in the corn belt, a pick up in farmer selling after the rally Friday and with farmers having to price or roll basis fixed contracts into the end of April.  Randy Martinson, Martinson Ag says the grain markets were also removing war premium after Middle East fighting failed to escalate to all out war.  Cattle saw a short covering bounce with triple digit gains as that market was oversold despite a lower stock market.  See omnystudio.com/listener for privacy information.