Dec 22 Corn closed at $6.83/bushel, up $0.1875 from yesterday's close.  Dec 22 Wheat closed at $8.4275/bushel, up $0.375 from yesterday's close.  Nov 22 Soybeans closed at $14.3775/bushel, down $0.235 from yesterday's close.  Dec 22 Soymeal closed at $427.1/short ton, down $1.4 from yesterday's close.  Dec 22 Soyoil closed at 66.44 cents/lb down 0.44 cents from yesterday's close.   ...