Abstract
The aim of this study was to observe the influence of the amount of precipitation during the grain filling period on nitrogen uptake and grain yield of spring barley fertilized by ammonium injection. Conventional nitrogen fertilization before sowing and CULTAN (Controlled Uptake Long Term Ammonium Nutrition) injection fertilization were compared during a 5-year small-plot field experiment under the conditions of Central Europe. In contrast to conventional nitrogen fertilization, with the CULTAN treatment there was observed no significantly negative effect of below-average precipitation during the grain filling period on post-heading (BBCH 51) nitrogen uptake from the soil with applications of 80 and 130 kg N.ha−1, grain yield, nitrogen uptake efficiency (NUpE) and thousand-grain weight with an application of 80 kg N.ha−1, nor there was a significantly positive effect on the contribution of nitrogen translocation to total nitrogen in the grain with an application of 130 kg N.ha−1. CULTANtreated plants achi...
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