## 3 Results
### Preliminary Seeding Growth Tests
\begin{table}
\begin{tabular}{c c c c c c c c c c} \hline \hline  & \multicolumn{4}{c}{**Soil Application 1**} & \multicolumn{4}{c}{**Folar Application 2**} \\ \cline{2-10}
**Group** & \multicolumn{4}{c}{**Filtrate**} & \multicolumn{4}{c}{**Filtrate Enriched with ZnOI loss**} & \multicolumn{4}{c}{**Filtrate**} & \multicolumn{4}{c}{**Filtrate Enriched with ZnOI loss**} \\ \cline{2-10}
**Average Seedings** & **Average Seedings** & **Average Seedings** & **Average Seedings** & **Average Seedings** & **Average Seedings** & **Average Seedings** & **Average Seedings** \\  & **Length 3** & **Dry Weight 4** & **Length 3** & **Dry Weight 4** & **Seedings Length** & **Dry Weight 4** & **Length 3** & **Dry Weight 4** \\  & **(cm) \(\pm\) SD** & **(g) \(\pm\) SD** & **(cm) \(\pm\) SD** & **(g) \(\pm\) SD** & **(g) \(\pm\) SD** & **(g) \(\pm\) SD** & **(g) \(\pm\) SD** & **(g) \(\pm\) SD** \\ \hline C+G-G\({}_{\rm O}\) & 2.10 \(\pm\) 0.88 h & 0.348 \(\pm\) 0.012 & 2.35 \(\pm\) 0.84 h & 0.346 \(\pm\) 0.006 & 2.97 \(\pm\) 1.08 h & 0.282 \(\pm\) 0.004 & 1.74 \(\pm\) 0.95 & 0.218 \(\pm\) 0.010 \\ F 100\% & 6.15 \(\pm\) 1.40 h & 0.305 \(\pm\) 0.005 & 5.98 \(\pm\) 1.21 h & 0.280 \(\pm\) 0.006 & 5.81 \(\pm\) 1.74 h & 0.282 \(\pm\) 0.005 & 2.75 \(\pm\) 1.59 & 0.248 \(\pm\) 0.020 \\ F 50\% & 8.46 \(\pm\) 1.89 h & 0.361 \(\pm\) 0.023 & 7.49 \(\pm\) 2.12 h & 0.332 \(\pm\) 0.013 & 8.39 \(\pm\) 1.75 h & 0.337 \(\pm\) 0.006 & 4.27 \(\pm\) 0.87 h & 0.269 \(\pm\) 0.002 \\ F 25\% & 4.85 \(\pm\) 2.07 h & 0.259 \(\pm\) 0.005 & 4.78 \(\pm\) 1.33 & 0.282 \(\pm\) 0.014 & 4.65 \(\pm\) 1.56 \(\pm\) & 0.287 \(\pm\) 0.022 & 2.32 \(\pm\) 0.94 h & 0.260 \(\pm\) 0.013 \\ F 50\% & 2.70 \(\pm\) 1.16 h & 0.303 \(\pm\) 0.014 & 3.01 \(\pm\) 1.42 h & 0.303 \(\pm\) 0.014 & 4.53 \(\pm\) 1.63 h & 0.257 \(\pm\) 0.022 & 2.04 \(\pm\) 1.47 h & 0.252 \(\pm\) 0.013 \\ \hline \multicolumn{10}{l}{where: 5.0\%, 25%, 50%--concentration of filtrates prepared from the initial filtrate (100%); 4, 5, 6, 7, 8, 9 for \(p<0.05\), 1 the differences between the tested groups were determined by Kruskal-Wallis test (non-normal distribution); 2 the differences between the tested groups were determined by Tukey test (normal distribution); 3 \(N=2\) (two replications for each group; from each replicate—— randomly selected seeding were measured; the result is an average length of 10 seedings); 4 the average dry weight of 25 seedlings in both replicates (\(N=2\)).} \\ \end{tabular}
\end{table} 
Table 2: The choice of the concentration of algal filtrate (F) for soil and foliar applications (\(N=2\)). More differences were observed for the enriched filtrate. Better results were obtained in the case of soil application. For the group F 100%-Zn, the average seedlings length was twice as high (_p_ 0.000096) as that for foliar application, for F 50%-Zn--75% higher (_p_ 0.000316), for F 25%-Zn--twice as high (_p_ 0.000156), for F 5.0%-Zn 47% higher (this difference was not statistically significant). Summarizing the above experiments, it can be concluded that the best results in terms of seedlings length were obtained for clear 50% concentration filtrate applied to soil. Table 2 also presents the weight of seedlings treated with clear and enriched filtrate. These results are in agreement with the data on seedlings' length. The best results were obtained for 50% algal filtrate, with the exception of 50% concentration filtrate enriched with Zn(II) ions (F 50%-Zn) applied to the soil. In this group, seedlings' weight from the control group was the highest, however higher only by 4.2% when compared with F 50%-Zn. F 50% applied to the soil influenced to the greatest extent the weight of the seedlings.