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Agronomic Crops Network

Ohio State University Extension

CFAES

Corn Nitrogen Rates following Corn or Alfalfa

N Rate Comparison following alfalfa:

  • 0 lbs. N, alfalfa tilled under in fall 2025
  • 50 lbs. N, alfalfa tilled under in fall 2025
  • 100 lbs. N, alfalfa tilled under in fall 2025
  • 0 lbs. N, alfalfa tilled under after 1st cutting
  • 50 lbs. N, alfalfa tilled under after 1st cutting
  • 100 lbs. N, alfalfa tilled under after 1st cutting

N Rate Comparison following Cover Crop:

  • 200 lbs. N applied at side-dress following wheat cover crop seeded at 20 lb/A
  • 30 lbs. N applied at planting and 170 lbs. N applied at side-dress following wheat cover crop seeded at 20 lb/A
  • 200 lbs. N applied at side-dress following wheat cover crop seeded at 40 lb/A
  • 30 lbs. N applied at planting and 170 lbs. N applied at side-dress following wheat cover crop seeded at 40 lb/A
  • 200 lbs. N applied at side-dress following wheat cover crop seeded at 60 lb/A
  • 30 lbs. N applied at planting and 170 lbs. N applied at side-dress following wheat cover crop seeded at 60 lb/A
  • 200 lbs. N applied at side-dress following wheat cover crop seeded at 80 lb/A
  • 30 lbs. N applied at planting and 170 lbs. N applied at side-dress following wheat cover crop seeded at 80 lb/A