Mar 20 Corn closed at $3.805/bushel, down $0.0675 from yesterday's close.  Mar 20 Wheat closed at $5.7225/bushel, down $0.0125 from yesterday's close.  Mar 20 Soybeans closed at $8.9725/bushel, down $0.0475 from yesterday's close.  Mar 20 Soymeal closed at $297.8/short ton, down $0.5 from yesterday's close.  Mar 20 Soyoil closed at 31.52 cents/lb down 0.5 cents from yesterday's close.  Apr 20 Live Cattle closed at $121.3/cwt down $3 from yesterday's close.  Mar 20 Feeder Cattle closed at $135.175/cwt down $4.5 from yesterday's close.  Apr 20 Lean Hogs closed at $70.45/cwt down $3 from yesterday's close.  Mar 20 WTI Crude Oil closed at $52.88/barrel down $1.31 from yesterday's close.  &nb...