How to Fertilize Silage Corn for Seeding

Determine the anticipated yield of the silage crop in tons per acre. This varies with the region of the country. Generally, the shorter the growing season, the lower the silage yields. Consult county extension officials for estimated yields for the area and use them as a benchmark. The extension office can furnish a chart of estimated plant nutrients necessary to deliver the benchmark yield.

Have the soil tested for nitrogen, potassium and phosphorus. These three macronutrients are the basic elements necessary for all plant growth, including silage corn. Determine the degree of deficiency, if any, of these elements in the soil.

Mix a fertilizer blend combining the necessary percentages of nitrogen, potassium and phosphorus, if all are deficient in the soil. Commercial agronomy services can also produce the mix or may have a standard fertilizer that is close enough to use.

Add the fertilizer to the fertilizer bin or tank on the corn planter. This allows the application of the fertilizer at the same time the corn is seeded into the field.

Fertilize the silage corn, a process known as side fertilizing, as the corn planter seeds the corn. The corn planter applies the fertilizer in a narrow band about 2 inches to each side and below the corn seed.