Dec 21 Corn closed at $5.4625/bushel, down $0.005 from yesterday's close.  Sep 21 Wheat closed at $6.745/bushel, down $0.025 from yesterday's close.  Nov 21 Soybeans closed at $13.595/bushel, up $0.0175 from yesterday's close.  Dec 21 Soymeal closed at $361.2/short ton, up $6.1 from yesterday's close.  Dec 21 Soyoil closed at 62.91 cents/lb down 1.16 cents from yesterday's close.  Oct 21 Live Cattle closed at $128.425/cwt down $0.775 from yesterday's close.  Aug 21 Feeder Cattle closed at $160.7/cwt down $1.5 from yesterday's close.  Oct 21 Lean Hogs closed at $92.525/cwt down $0.575 from yesterday's close.  Sep 21 WTI Crude Oil closed at $71.94/barrel up $0.03 from yesterday's close.  &...