## 3 Results
### Final Seedling Growth Tests  
The final seedling growth tests were carried out for algal products that showed the best results in the preliminary tests, concerning the length and weight of the seedlings. For these tests, the following groups were chosen: F 50% and F 50%-Zn as experimental groups and C-H\({}_{2}\)O-Zn and C-H\({}_{2}\)O as the control groups. The tests in all groups were performed as four replicates. The obtained results are presented in Table 5. For both methods of application, foliar and soil, the best results were obtained for F 50%. The average seedlings' length was twice as high for soil and 1.7 for foliar application compared to the control group (C-H\({}_{2}\)O). For this filtrate, seedlings length was 21% higher for soil than for foliar application; however, this difference was not statistically significant.  
In the case of the soaking, the highest length was obtained for seed macerated with distilled water; however, the average length in this group was only 2% higher than for F 50%. Algal filtrate (F 50%) used for seeds soaking influenced radish length when compared to seeds without soaking by 24%. The average seedlings weight ranged from 0.204 g for C-H\({}_{2}\)O-Zn to 0.136 g (seeds without soaking). The difference in average weight was only 0.068 g.  
Algal homogenate (H 10%) influenced the average length of seedlings--it was 2.4 times higher than in the control group (seeds without coating, statistically significant difference for \(p<0.05\)), 31% higher than for H 10%-Zn, 37% higher than for C-H\({}_{2}\)O-Zn. The average weight was comparable in all tested groups. There were no statistically significant differences.  
\begin{table}
\begin{tabular}{c c c c} \hline
**Group** & **Soaking Time** & **Average Seedlings** & **Average Seedlings Dry** \\  & **(h)** & **Length \({}^{1}\) (cm) \(\pm\) SD** & **Weight \({}^{2}\) (g) \(\pm\) SD** \\ \hline C—seeds without soaking \({}^{*}\) & 1 & 2.85 \(\pm\) 1.03 \({}^{\rm j\,m}\) & 0.206 \(\pm\) 0.001 \\ C—seeds without soaking & 12 & 1.95 \(\pm\) 0.60 & 0.291 \(\pm\) 0.004 \\ C—seeds without soaking & 24 & 2.45 \(\pm\) 0.90 \({}^{\rm n}\) & 0.251 \(\pm\) 0.023 \\ C-H\({}_{2}\)O & 1 & 2.30 \(\pm\) 0.79\({}^{\rm o}\) & 0.239 \(\pm\) 0.013 \\ C-H\({}_{2}\)O & 12 & 2.10 \(\pm\) 0.97 & 0.246 \(\pm\) 0.009 \\ C-H\({}_{2}\)O & 24 & 2.05 \(\pm\) 0.76 & 0.265 \(\pm\) 0.001 \\ C-H\({}_{2}\)O-Zn & 1 & 1.15 \(\pm\) 0.63 \({}^{\rm bgk}\) & 0.292 \(\pm\) 0.034 \\ C-H\({}_{2}\)O-Zn & 12 & 1.10 \(\pm\) 0.46 \({}^{\rm chl}\) & 0.285 \(\pm\) 0.019 \\ C-H\({}_{2}\)O-Zn & 24 & 0.720 \(\pm\) 0.364 \({}^{\rm deimno}\) & 0.306 \(\pm\) 0.013 \\ F 50\% & 1 & 2.76 \(\pm\) 0.75 \({}^{\rm a\,d}\) & 0.322 \(\pm\) 0.048 \\ F 50\% & 12 & 2.20 \(\pm\) 0.86 \({}^{\rm e}\) & 0.254 \(\pm\) 0.068 \\ F 50\% & 24 & 2.75 \(\pm\) 0.98 \({}^{\rm f\,i}\) & 0.263 \(\pm\) 0.015 \\ F 50\%-Zn & 1 & 1.95 \(\pm\) 0.96 & 0.288 \(\pm\) 0.018 \\ F 50\%-Zn & 12 & 1.50 \(\pm\) 0.47 & 0.292 \(\pm\) 0.005 \\ F 50\%-Zn & 24 & 1.00 \(\pm\) 0.47 \({}^{\rm a\,f}\) & 0.318 \(\pm\) 0.001 \\ \hline \end{tabular}  
* where: \({}^{\rm a,\ b}\), \({}^{\rm c}\)... for \(p<0.05\); the differences between the tested groups were determined by Kruskal-Wallis test;
* seeds without soaking (C) were kept in a fridge respectively for 1, 12 or 24 h; \({}^{1}\)\(N=2\) (two replicates for each group;  
from each replicate—5 randomly selected seedlings were measured; the result is an average length of 10 seedlings);  
\({}^{2}\) the average dry weight of 25 seedlings in both replicates (\(N=2\)).  
\end{table}
Table 4: The effect of soaking time on the length and weight of the seedlings (\(N=2\)).