Dec 20 Corn closed at $3.525/bushel, down $0.0375 from yesterday's close.  Sep 20 Wheat closed at $4.9525/bushel, up $0.02 from yesterday's close.  Nov 20 Soybeans closed at $9.025/bushel, down $0.0375 from yesterday's close.  Dec 20 Soymeal closed at $303.1/short ton, down $2.9 from yesterday's close.  Dec 20 Soyoil closed at 29.56 cents/lb up 0.33 cents from yesterday's close.  Aug 20 Live Cattle closed at $100/cwt down $0.1 from yesterday's close.  Aug 20 Feeder Cattle closed at $134.925/cwt down $1.225 from yesterday's close.  Aug 20 Lean Hogs closed at $48.875/cwt down $0.4 from yesterday's close.  Aug 20 WTI Crude Oil closed at $40.36/barrel down $0.27 from yesterday's close.  &nbs...