Dec 20 Corn closed at $3.345/bushel, down $0.005 from yesterday's close.  Sep 20 Wheat closed at $5.2775/bushel, down $0.1175 from yesterday's close.  Nov 20 Soybeans closed at $8.9975/bushel, up $0.005 from yesterday's close.  Dec 20 Soymeal closed at $301.5/short ton, up $2.9 from yesterday's close.  Dec 20 Soyoil closed at 30.14 cents/lb down 0.23 cents from yesterday's close.  Oct 20 Live Cattle closed at $103.825/cwt down $1.275 from yesterday's close.  Aug 20 Feeder Cattle closed at $139.35/cwt down $2.7 from yesterday's close.  Aug 20 Lean Hogs closed at $54.55/cwt up $0.55 from yesterday's close.  Sep 20 WTI Crude Oil closed at $41.63/barrel up $0.34 from yesterday's close.  &nbs...