Jul 21 Corn closed at $6.845/bushel, down $0.145 from yesterday's close.  Jul 21 Wheat closed at $6.8075/bushel, down $0.03 from yesterday's close.  Jul 21 Soybeans closed at $15.085/bushel, down $0.355 from yesterday's close.  Jul 21 Soymeal closed at $383.3/short ton, up $1.7 from yesterday's close.  Jul 21 Soyoil closed at 66.98 cents/lb down 3.48 cents from yesterday's close.  Aug 21 Live Cattle closed at $120.025/cwt up $1.475 from yesterday's close.  Aug 21 Feeder Cattle closed at $151.175/cwt up $2.775 from yesterday's close.  Jul 21 Lean Hogs closed at $119.975/cwt down $1.35 from yesterday's close.  Jul 21 WTI Crude Oil closed at $70.83/barrel up $0.54 from yesterday's close.  &...