Yield response of canola and wheat to nitrogen application – Tamworth 2018

Abstract

Key findings •Results from this experiment conducted during the 2018 season highlight canola’s yield response to nitrogen (N) application. •Relative to the zero N treatment, a significant increase in yield was recorded where N was applied at 50 kg N/ha (2.53 t/ha) and higher. •Canola yield increased with higher rates of N application before the yield response plateaued at 150 kg N/ha. •Canola protein levels increased with higher rates of N. A significant increase in protein was recorded where N was applied at 50 kg N/ha and higher, relative to the zero N treatment. •Wheat yields also increased with higher rates of N in a more linear path than canola. The highest wheat yield was recorded where N was applied at 450 kg N/ha. Wheat protein concentrations remained below 13% across all treatments.