## 3 Results and Discussion
### The Content of Individual Fractions
#### 3.3.3 The High-Organic Soils  
When analyzing the clay fraction content of in highly organic soils, it was found that the laser diffractometer results were similar for all samples (No. 8-12), and in the case of sample No. 10-12, they were also in agreement with the results of the reference method. The largest deviations in the results compared to the hydrometric method were observed only in the case of sample Nos. 8 and 9 (Figure 30). The graph in Figure 31 shows the percentage of grains attributed to the silt fraction, clearly showing that the hydrometric method results were significantly lower than the others, but within a relatively narrow range (6.5-25.0%) for almost all samples. The Analysette 22 laser diffractometer results were remarkably close to the results of the reference method, but only for samples 11 and 12, while for samples 8-10, high agreement with the Helos laser diffractometer results was observed. The narrowest range of results was observed for the results obtained with the Helos laser diffractometer, where the maximum difference in results between samples was only 6.36%. Figure 30: The clay fraction in high-organic soils. Figure 29: The sand fraction in medium-organic soils. In the case of the sand fraction content determined for highly organic soils, the results of both the reference method and the Analysette 22 laser diffractometer were extremely inconsistent, ranging from 0.0% to 92.5%, with mutual similarities only for the results of sample No. 11 and 12 (Figure 32). In contrast, the analysis of the Helos laser diffractometer results showed that they were relatively close for all samples (2.29%-16.73%), but it is difficult to compare them with the results of the alternative methods, except for sample Nos. 8 and 9, where they were between the results of the hydrometric method and the Analysette 22 laser diffractometer. Analyzing the results of the tests of high-organic soils (Figures 30-32) in terms of belonging to individual fractions, it was found that in most cases, much narrower ranges of values were obtained than in the case of low- and medium-organic soils, especially when tested with the Helos laser diffractometer. The content of organic matter in this group was the highest and in the widest range (33.79%-84.14%) compared to the low-organic (4.35%-5.73%) and medium-organic (6.95%-19.64%) soils, suggesting that the distribution the results obtained would be much higher. Regarding the similarity of the results obtained between the methods used, it is difficult to make a clear or definitive statement. It depends on which samples were compared, because although the research materials were assigned to the same classification group, they came from different locations and could have different origins, and could therefore have different chemical compositions or structures, which  
Figure 31: The silt fraction in high-organic soils. Figure 32: The sand fraction in high-organic soils. would be reflected in the research results, under identical test conditions. Nevertheless, the test results for some samples were comparable, as can be seen from the corresponding charts. The largest discrepancies in relation to alternative methods were attributed to the test results obtained using the Analysette 22 laser diffractometer. Unfortunately, in this case, the test results obtained with the reference method can hardly be qualified as useful for verifying the tests results obtained with both laser methods. The scientific reliability and confirmation of the credibility of these analyses require that the imperfections and limitations of the methodology used are again recognized and described, and the differences in the results are discussed. When analyzing the results from a general perspective, different degrees of similarity were found between the results obtained using the methods applied, ranging from no similarity at all to a high degree of similarity.