Dec 21 Corn closed at $5.5075/bushel, down $0.1425 from yesterday's close.  Sep 21 Wheat closed at $7.275/bushel, down $0.0975 from yesterday's close.  Nov 21 Soybeans closed at $13.2/bushel, down $0.3325 from yesterday's close.  Dec 21 Soymeal closed at $353.6/short ton, down $6.7 from yesterday's close.  Dec 21 Soyoil closed at 59.92 cents/lb down 1.56 cents from yesterday's close.  Oct 21 Live Cattle closed at $128.15/cwt down $0.9 from yesterday's close.  Sep 21 Feeder Cattle closed at $162.9/cwt down $0.45 from yesterday's close.  Oct 21 Lean Hogs closed at $86.925/cwt down $2.175 from yesterday's close.  Sep 21 WTI Crude Oil closed at $64.06/barrel down $1.4 from yesterday's close. ...