Take a close look at phosphorus use Question: What does
phosphorus do? Jim Gray: Phosphorus is often called the “plant
energizer.” It is vital to the plant growth process and
essential for energy transfer and storage. P is the primary
component of DNA in the plant. It promotes root growth and leaf
expansion, which aids in early-season growth and health.
Question: How much P should I apply? Gray: First, use a soil
test to determine how much P and other nutrients are needed.
This is also based on the crop. For 150-bushel corn, apply 60
pounds per acre of actual P. For 50-bushel soybeans, apply 45
pounds per acre actual P. For 3 tons of alfalfa, apply 45 pounds
per acre actual P. Question: How else can I maximize P? Gray: As
input costs continue to rise, the old days of just applying
fertilizer “like Dad did” are over. Variable-rate application
through the use of GPS could also correctly apply the nutrient
where it is needed. It is possible some areas of a field will
have higher levels of P and won’t even need a