Use this formula to determine bushels per acre of No. 2 yellow corn @ 15% moisture:
(100-Harvest Moisture)x(Weight of Harvest Grain)x(109.815)/(Row Length, Ft.)/(Row Width, In.)/(No. of Rows)=Bu. of No. 2 Yellow Corn
Example:
Six 30" rows, 1000 feet in length are harvested, yielding 3000 lbs. of shelled corn @ 20.0% moisture.
(100-20.0% = 80.0) x 4000 lbs. X 109.815 / 1000 ft. / 30" / 6 rows = 195.23 Bu. / Ac. of # 2 yellow corn.