Back to Main Table 4 . Phosphorus and potassium recommendations for corn silage or sorghum silage production. 2 O 5 and K 2 O for the optimum soil test category are based on nutrient removal for the reported yield. The amounts shown in the table for the optimum soil test category are for140 bu. Although P 2 O 5 and K 2 O are not recommended for the high soil test category, a small amount equivalent to that contained in 100 pounds of a common complete NPK grade, applied as a starter fertilizer banded to the side and below the seed row, may be advantageous under conditions of limited soil drainage, cool soil conditions, or crop residues on the soil surface.
None is recommended for the very high soil test category.
Back to Main Table 5 . Zinc recommendations for corn and sorghum production.