Jul 21 Corn closed at $6.75/bushel, down $0.1375 from yesterday's close.  Jul 21 Wheat closed at $6.875/bushel, down $0.06 from yesterday's close.  Jul 21 Soybeans closed at $15.625/bushel, up $0.14 from yesterday's close.  Jul 21 Soymeal closed at $394/short ton, down $4.7 from yesterday's close.  Jul 21 Soyoil closed at 70.38 cents/lb up 2.99 cents from yesterday's close.  Aug 21 Live Cattle closed at $119.25/cwt up $2.65 from yesterday's close.  Aug 21 Feeder Cattle closed at $152.325/cwt up $3.175 from yesterday's close.  Jul 21 Lean Hogs closed at $118.475/cwt down $1.175 from yesterday's close.  Jul 21 WTI Crude Oil closed at $68.75/barrel up $1.03 from yesterday's close.   ...