The effect of nitrogen on grain yield and quality in oats

Abstract

This research project investigated the effect of nitrogen rates, variety, and environment on grain yield components, nitrogen use efficiencies, milling quality characteristics, the nutritional composition, and whole grain and groat size parameters of winter and spring oats. The relationship between traits were also explored. Field trials were conducted at Aberystwyth (Wales), Carlow (Ireland), Balgonie (Scotland), Gleadthorpe and Rosemaund (England). Between 2017-2019 four winter oat varieties were tested under 6 nitrogen regimes from 0-280 kg ha-1 ; complementary winter oat trials were carried out between 2019-2021 which included three varieties and nitrogen rates from 0-300 kg ha-1. The results from these trials strengthened previous findings. Between 2019-2021 spring oat field trials we