In this Iowa replicated corn study using four different products, Vitazyme increased corn yields by 2 to 9% (up to 13.2 bu/acre) alone or in combination with another product. A variant of Vitazyme increased yield by 11% when applied with Product Y, while Product Y alone increased yield by 9%. Product Z caused the greatest yield increase: 12%. Grain moisture was not significantly different among all eight treatments, and likewise for corn weight/plant, although Products X + Y (half rate) gave a 4% increase in grain/plant. Income increased with all seven treatments, the greatest being for
Product Z ($52.80/acre).