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Ověření účinnosti různých inhibitorů nitrifikace v hnojivu DASA na výnos a kvalitu zrna pšenice ozimé
Kvita, Martin
The bachelor thesis deals with the effect of different nitrification inhibitors in the fertilizer DASA on the yield and grain quality of winter wheat (Triticum aestivum). The practical part was solved in the form of a small-plot field experiment at the Field Experimental Station Žabčice in the 2021/2022 growing season. The parameters were assessed: the grain yield, the hectoliter weight of the grain, the content of protein and gluten in the grain and the Zeleny test. The fertilizer variants included in the experiment were: 1. DASA (control variant without inhibitors), 2. DASA + MPCAA 1, 3. DASA + MPCAA 2, 4. DASA + DMPP, 5. DASA + DMPPA, 6. DASA + MPA 1, 7. DASA + MPA 2. Winter wheat grain yield was not statistically significant. The highest average value was achieved by variant No. 7 DASA + MPA 2 (6.80 t.ha-1). Compared to the control variant, it achieved a higher yield by 0.18 t.ha-1. The highest values of hectolitre weight of grain were observed for the control variant No. 1 DASA (77.1 kg.hl-1). The content of protein was highest in control variant No. 1 DASA and variant No. 6 DASA + MPCAA 1 (12.2%). The highest gluten content (26.8%) and sedimentation value (37 ml) was also achieved by control variant No. 1 DASA. In terms of yield, variant No. 7 DASA with MPA 2 inhibitor had the highest values, while the highest values in terms of quality were achieved by variant No. 1 DASA without inhibitors.
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