May 21 Corn closed at $5.5975/bushel, down $0.045 from yesterday's close.  May 21 Wheat closed at $6.11/bushel, down $0.07 from yesterday's close.  May 21 Soybeans closed at $14.02/bushel, down $0.3475 from yesterday's close.  May 21 Soymeal closed at $410.2/short ton, down $13 from yesterday's close.  May 21 Soyoil closed at 52.13 cents/lb down 0.79 cents from yesterday's close.  Jun 21 Live Cattle closed at $122.55/cwt down $0.35 from yesterday's close.  May 21 Feeder Cattle closed at $149.225/cwt down $0.175 from yesterday's close.  Jun 21 Lean Hogs closed at $106.325/cwt up $1.025 from yesterday's close.  May 21 WTI Crude Oil closed at $61.26/barrel up $2.1 from yesterday's close.  &...