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Determining Optimum Nitrogen Rates for Corn

Trial Site: Fairview Research Farm

Research Coordinator: Dr. Akim Omokanye

From: Peace Country Beef & Forage Association 2016 Annual Report

One of the most costly and important inputs in corn production is nitrogen fertilizer. The objective of this project is to help develop appropriate N rate recommendations for corn. In order to become more confident with this new nitrogen rate recommendation approach we will continue building the response data-base with more nitrogen trials during the next few years.


The study site was at the Fairview Research Farm (NW5-82-3W6) on RR #35, MD of Fairview. The soil test at 0-6” soil depth done at Exova laboratory (Edmonton) prior to seeding showed an organic matter content of 7.1%, a pH of 5.5 (acidic) and an electrical conductivity of 0.35 dS/m. The field was cultivated before seeding.

The treatments mentioned below were arranged in a randomized complete block design in 4 replications.

The treatments consisted of 3 corn types and 4 N fertilizer rates as provided below:

Three (3) Corn types:

1. RR hybrid (A4414RR)