Armstrong Memorial Research and Demonstration Farm

Phosphorus and Potassium Fertilizer Placement for Corn and Soybeans Managed with No-till and Chisel-Disk Tillage

Authors: Antonio P. Mallarino (Iowa State University) , Bernard J. Havlovic (Iowa State University) , Jeff Butler (Iowa State University)

Abstract

No-till management results in little or no incorporation of residues and fertilizers with soil. Broadcast fertilization could be inefficient with no-till because phosphorus (P) and potassium (K) accumulate at or near the soil surface. Subsurface banding of fertilizers with planter starter attachments or before planting could be more effective. A long-term study was initiated in 1994 at the Armstrong Farm and at other research farms to evaluate P and K fertilizer placement for corn and soybeans managed with no-till and chisel-plow tillage.

Keywords: Agronomy

How to Cite: Mallarino, A. P. , Havlovic, B. J. & Butler, J. (2004) “Phosphorus and Potassium Fertilizer Placement for Corn and Soybeans Managed with No-till and Chisel-Disk Tillage”, Iowa State University Research and Demonstration Farms Progress Reports. 2003(1).