Southeast Research and Demonstration Farm

Phosphorus and Potassium Placement Methods for Corn and Soybeans Managed with No-Till or Chisel-Plow Tillage

Authors: Antonio P. Mallarino (Iowa State University) , Kevin Van Dee (Iowa State University)

Abstract

A study was initiated in 1994 to evaluate long-term effects of phosphorus (P) and potassium (K) fertilizer rates and placement methods on yield of corn and soybean managed with no-till or chisel-plow tillage. No-till management results in little or no incorporation of residue and fertilizer with soil. Broadcast fertilization could be inefficient with no-till because both nutrients accumulate near the soil surface. Therefore, subsurface banding of P and K fertilizers could be more effective.

Keywords: Agronomy

How to Cite: Mallarino, A. P. & Van Dee, K. (2008) “Phosphorus and Potassium Placement Methods for Corn and Soybeans Managed with No-Till or Chisel-Plow Tillage”, Iowa State University Research and Demonstration Farms Progress Reports. 2007(1).