THE USAGE OF STATISTICAL METHODS FOR EVALUATION OF AMMONIUM NITRATE CONTENT

摘要

The article presents the impacts of agro-technical practices which have a major effect on changes of ammonium nitrate content. From the tilth practices this effect described two methods of cultivation (medium depth ploughing, shallow ploughing), with three variants of fertilization (without fertilizer, control variant, industrial fertilizer with NPK fertilizers, industrial fertilizer with NPK fertilizers after harvest residues incorporating). The statistical analysis of the obtained data was performed by means of Kruskal-Wallis test and Wilcoxon test.