May 20 Corn closed at $3.8175/bushel, down $0.0325 from yesterday's close.  May 20 Wheat closed at $5.1875/bushel, up $0.005 from yesterday's close.  May 20 Soybeans closed at $8.97/bushel, down $0.1025 from yesterday's close.  May 20 Soymeal closed at $303.9/short ton, down $5 from yesterday's close.  May 20 Soyoil closed at 29.39 cents/lb down 0.35 cents from yesterday's close.  Apr 20 Live Cattle closed at $108.65/cwt down $2.625 from yesterday's close.  Apr 20 Feeder Cattle closed at $133.65/cwt down $1.9 from yesterday's close.  Apr 20 Lean Hogs closed at $65.375/cwt up $1.075 from yesterday's close.  Apr 20 WTI Crude Oil closed at $45.96/barrel down $0.82 from yesterday's close.  &...