May 20 Corn closed at $3.3075/bushel, down $0.0275 from yesterday's close.  May 20 Wheat closed at $5.4925/bushel, up $0.075 from yesterday's close.  May 20 Soybeans closed at $8.5425/bushel, down $0.045 from yesterday's close.  May 20 Soymeal closed at $303.2/short ton, down $5.9 from yesterday's close.  May 20 Soyoil closed at 26.43 cents/lb up 0.19 cents from yesterday's close.  Jun 20 Live Cattle closed at $80.85/cwt down $2.225 from yesterday's close.  May 20 Feeder Cattle closed at $108.1/cwt down $3.55 from yesterday's close.  Jun 20 Lean Hogs closed at $48.325/cwt down $4.5 from yesterday's close.  May 20 WTI Crude Oil closed at $28.53/barrel up $3.21 from yesterday's close.  &nb...