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

Antonio P. Mallarino; Bernard J. Havlovic; Jeff Butler

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

A long-term study was initiated in 1994 to evaluate phosphorus (P) and potassium (K) fertilizer rates and placement methods for corn and soybeans managed with no-till and chisel-plow tillage. No-till management resulted in little or no incorporation of residue and fertilizer into the soil. Broadcast fertilization has generally been inefficient with no-till because both nutrients accumulate near the soil surface. Subsurface banding of P and K fertilizers, however, can be more effective.

Keywords: Agronomy

How to Cite: Mallarino, A. P. , Havlovic, B. J. & Butler, J. (2006) “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. 2005(1).