by Wayne Flanary, Regional Agronomist, MU Extension
Phosphorus and potassium fertilizers can be surface applied in no-till. The MU research indicates that these nutrients can be applied effectively in this manner. Before someone starts no-tilling it is recommended that soil test values be increased from low values however.
Topdressing phosphorus and potassium fertilizers are critical to prevent mining of soil test levels. Starters and other band applications generally do not