May 20 Corn closed at $3.4075/bushel, down $0.005 from yesterday's close.  May 20 Wheat closed at $5.6875/bushel, down $0.0075 from yesterday's close.  May 20 Soybeans closed at $8.86/bushel, up $0.0375 from yesterday's close.  May 20 Soymeal closed at $321.5/short ton, down $4 from yesterday's close.  May 20 Soyoil closed at 27.01 cents/lb up 0.14 cents from yesterday's close.  Jun 20 Live Cattle closed at $92.075/cwt up $3 from yesterday's close.  May 20 Feeder Cattle closed at $122.9/cwt up $2 from yesterday's close.  Jun 20 Lean Hogs closed at $60.325/cwt up $0.55 from yesterday's close.  May 20 WTI Crude Oil closed at $20.28/barrel up $0.19 from yesterday's close.   ...