2.3.2. Statistical Analysis

The data on neonicotinoid residues were analyzed by analysis of variance (ANOVA) using the AOV factorial method with two or three factors [31]. The first factor was location which was considered as a fixed factor because of a limited production area of sugar beet and characteristic weather conditions. The second factor was insecticide treatment and the third factor was the plant part. This factor was analyzed for sampling during the growing season, where leaves and roots were sampled separately. A Tukey post-hoc test was used to determine which mean values of the variants were significantly different after a significant test result (*p* < 0.05).
