The effect of nitrogen nutrition and sowing density on the proportion of class I grains in malting barley

Authors

  • Aleksandar Paunović Faculty of Agronomy in Čačak, University of Kragujevac, Serbia
  • Desimir Knežević Faculty of Agriculture, University of Priština, Zubin Potok, Serbia
  • Miodrag Jelić Faculty of Agriculture, University of Priština, Zubin Potok, Serbia
  • Milomirka Madić Faculty of Agronomy in Čačak, University of Kragujevac, Serbia
  • Gorica Cvijanović Faculty of Biofarming, Megatrend University, Sombor, Serbia
  • Ivica Đalović Faculty of Agriculture, University of Novi Sad, Serbia

Keywords:

malting barley, nitrogen nutrition, sowing density, proportion of Class I grains

Abstract

Grain classification is the most important barley quality criterion. According to EBC regulations, barley is classified into three classes, depending on grain thickness (Class I: >2.5 mm, Class II: from 2.2 to 2.5 mm and Class III <2.2 mm). High quality malting barley should have at least 90 % of Class I grains. The objective of this study was to examine the proportion of Class I grains in five spring barley cultivars grown at three different sowing densities (300, 400 and 500 germinating seeds m-2) and three N fertilization rates (50, 80 and 100 kg N ha-1) during three growing seasons. The highest proportion of Class I grains was obtained at a density of 300 seeds m-2 in all years of study. Increasing N rates induced a reduction in the proportion of Class I grains. A highly significant difference was observed between the highest N rate and the control without topdressing (50 kg N ha-1) and the treatment with 80 kg N ha-1.

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Published

06.02.2026

Issue

Vol. 14 No. 27 (2009)

Section

Articles