Journal of NACAA

Prescription Manure: Adding Nitrogen to Increase Liquid Manure Nutrient Content

ISSN 2158-9429

Volume 13, Issue 2 - December 2020

Editor: Linda Chalker-Scott

Abstract

Liquid swine nursery manure and liquid dairy manure are much lower in nitrogen content compared to liquid swine finishing manure. While swine finishing manure as a side-dress nitrogen source for corn is gaining popularity in the Midwestern states, the lower nitrogen content of swine nursery manure and dairy manure keeps these manure sources from being considered as a side-dress nitrogen source in corn fields. In this three-year replicated study, 28% Urea Ammonium Nitrate (UAN) was added to swine nursery manure, just prior to application, to boost the nitrogen content of the manure as a side-dress nitrogen source for corn. The manure, supplemented with 28% UAN, was land applied using a 5,250 gallon manure tanker with Dietrich incorporation sweeps. This treatment was compared to a 28% UAN treatment, applied without manure, but at a similar total nitrogen amount per acre. Yield results were similar between the two treatments each year of the study.