Dec 20 Corn closed at $3.365/bushel, down $0.0825 from yesterday's close.  Sep 20 Wheat closed at $5.2475/bushel, down $0.0925 from yesterday's close.  Nov 20 Soybeans closed at $8.7525/bushel, down $0.155 from yesterday's close.  Dec 20 Soymeal closed at $291.7/short ton, down $8.4 from yesterday's close.  Dec 20 Soyoil closed at 28.7 cents/lb down 0.14 cents from yesterday's close.  Aug 20 Live Cattle closed at $99.65/cwt down $0.35 from yesterday's close.  Aug 20 Feeder Cattle closed at $137.05/cwt up $1.3 from yesterday's close.  Aug 20 Lean Hogs closed at $51.275/cwt up $1.4 from yesterday's close.  Aug 20 WTI Crude Oil closed at $39.62/barrel down $0.93 from yesterday's close.  &nb...