Runoff Phosphorus Loss as Affected by Tillage, Fertilizer, and Swine Manure Phosphorus Management in Corn-Soybean Production Systems

Antonio P. Mallarino; Mazhar Ul Haq; Kenneth T. Pecinovsky

Northeast Research and Demonstration Farm

Runoff Phosphorus Loss as Affected by Tillage, Fertilizer, and Swine Manure Phosphorus Management in Corn-Soybean Production Systems

Authors: Antonio P. Mallarino (Iowa State University) , Mazhar Ul Haq (Iowa State University) , Kenneth T. Pecinovsky (Iowa State University)

Abstract

Information on phosphorus (P) loss from surface runoff in fields managed with different cropping and P management systems is scarce. Swine manure can supply nitrogen (N), P, and K (potassium) for crops. Continued use of N-based manure rates can result in P buildup in the soil, mainly in continuous corn or when manure is applied for both corn and soybean production. Excessive soil P and P applications increase the risk of P loss from fields and of water quality impairment.

Keywords: Agronomy

How to Cite: Mallarino, A. P. , Haq, M. U. & Pecinovsky, K. T. (2005) “Runoff Phosphorus Loss as Affected by Tillage, Fertilizer, and Swine Manure Phosphorus Management in Corn-Soybean Production Systems”, Iowa State University Research and Demonstration Farms Progress Reports. 2004(1).