Mar 20 Corn closed at $3.7225/bushel, down $0.0475 from yesterday's close.  Mar 20 Wheat closed at $5.3625/bushel, down $0.1475 from yesterday's close.  Mar 20 Soybeans closed at $8.7425/bushel, down $0.1625 from yesterday's close.  May 20 Soymeal closed at $292/short ton, down $2.8 from yesterday's close.  Mar 20 Soyoil closed at 29.49 cents/lb down 1.15 cents from yesterday's close.  Apr 20 Live Cattle closed at $115.25/cwt down $3 from yesterday's close.  Mar 20 Feeder Cattle closed at $136.025/cwt down $4.175 from yesterday's close.  Apr 20 Lean Hogs closed at $64.625/cwt down $2.4 from yesterday's close.  Apr 20 WTI Crude Oil closed at $51.18/barrel down $2.2 from yesterday's close. ...