Effect of sulphur fertilization on grain yield and yield components of winter wheat

Abstract

The effect of sulphur application on winter wheat yield and yield components on two different soils in northern Estonia and southern Estonia during 2004–2009 was investigated. Sulphur was applied with NS-fertilizer Axan or Axan Super at the rate of S 10 or 13.6 kg ha−1 accompanied with nitrogen background of N 100 kg ha−1, which effect was compared to effect of ammonium nitrate at the same rate of N. The rates of fertilizers were divided into two portions and applied at the growth stages 21–22 and 25–30. The effect of sulphur fertilization on the formation of wheat yield varied on a quite large scale depending on soil and weather conditions of trial locations. The yield components were closely related: when one component was changed, the other components sometimes compensated for grain yield.