Phosphorus and Potassium Fertilization for Corn and Soybeans Managed with No-till and Chisel-Plow Tillage

Date
2001-01-01
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Mallarino, Antonio
Rueber, David
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Abstract

This study was initiated in 1994 to study phosphorus (P) and potassium (K) fertilizer placement for corn and soybeans managed with no-till and chisel-plow tillage. No-till management involves less incorporation of residues and fertilizers with soil than other systems. Broadcast fertilization could result in low fertilizer use efficiency in no-tilled soils because P and K accumulate at or near the soil surface. Banding fertilizers with the planter could be an effective practice but planter attachments apply low rates of fertilizer to shallow bands. Deeper and larger fertilizer applications may be needed. This study is being replicated at four other research farms to obtain data from various soils and climatic conditions.

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Agronomy
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