Main content

Impact of long-term nitrogen fertilization for corn on soil properties and soil productivity

Show full item record

Title: Impact of long-term nitrogen fertilization for corn on soil properties and soil productivity
Author: Allison, Bailey
Department: Department of Plant Agriculture
Program: Plant Agriculture
Advisor: Nasielski, JoshuaDeen, Bill
Abstract: Nitrogen (N) fertilization can increase crop productivity and residue carbon (C) additions. Previous studies have found positive, negative, and neutral responses of soil organic carbon (SOC) and soil properties to long-term N fertilization for corn. A ten-year N rate (2009 – 2018) experiment was established in Elora, Ontario to investigate the impact of long-term nitrogen fertilization at six rates ranging from 30 to 260 kg N ha-1 in corn (Zea mays L.) on soil properties. This study found no change in either SOC or total soil N across N rate treatments after ten years despite large differences in residue C additions. Further, wet and dry aggregate stability were unaffected by N rate, and the quantity of mineralizable N, measured in an incubation experiment, only showed minor differences. In a sub-experiment within the long-term trial where N was limited, long-term N rate increased yields in only one of three growing seasons.
URI: https://hdl.handle.net/10214/25774
Date: 2021-04
Terms of Use: All items in the Atrium are protected by copyright with all rights reserved unless otherwise indicated.


Files in this item

Files Size Format View
Bailey_Allison_202105_MSc.pdf 1.322Mb PDF View/Open

This item appears in the following Collection(s)

Show full item record