Stabilizovaná dusíkatá hnojiva se sírou ve výživě pšenice ozimé

The aim was to compare the effects of stabilized ureas including sulphur (in different dosing) with fertilizers without inhibitors on nutrition of winter wheat crop. There were a five differential variants: 1. ALZON 46 (urea with inhibitor of nitrification) + ammonium sulfate (1:1), 100% dose, 2. ALZON 46 (urea with inhibitor of nitrification) + ammonium sulfate (1:1) 80% dose, 3. ALZON 25 -- 6 S, 100% dose (fertilizer with nitrification inhibitor involving 25 % nitrogen and 6 % sulphur) 4. ALZON 25 -- 6S, 80% dose, 5. Urea + ammonium sulfate. I examine the effects of these variants on nutrition of crop, yield and qualitative characteristics of grain. The experiment was realized on small-parcel field at ŠZP in Žabčice in year 2012/2013. The variant ALZON 25 -- 6 S 80% dose reached the worst results for the gluten content, content of N-substances and sedimentation value. The variant Urea + ammonium sulfate had the lowliest value of a bulk density. The best results were reached for fertilizer ALZON 46 (urea with inhibitor of nitrification) + ammonium sulfate in ratio 1:1 (100 % dose) for parameters such as value of N-tester, yield of grain, sedimentation value, content of N-substances and gluten content