## 3 Results
### The Effect of Hydrothermal Conditions and Protection Measures on Potato Tubers Health
\begin{table}
\begin{tabular}{l c c c c c c c c} \hline \hline
**Specification** & \multicolumn{2}{c}{**C \({}^{**}\)**} & **BCAPo** & **BCABs** & **PCPEm** & **EM** & **UG** & **BR** \\ \hline \multicolumn{2}{l}{_Holmithosporium stalani_} & & & & & & \\ \hline \multicolumn{2}{l}{_Hdimithosporium stalani_} & & & & & & \\ \multicolumn{2}{l}{2015} & 3.2 \(\pm\) 2.9 & 2.7 b \(\pm\) 2.8 & 2.5 b \(\pm\) 11.1 & 2.0 d \(\pm\) 4.6 & 2.5 b c \(\pm\) 2.2 & 2.2 d \(\pm\) 2.3 & 2.3 d \(\pm\) 2.9 \\ \multicolumn{2}{l}{Average degree of infection} & 2016 & 2.6 b \(\pm\) 5.0 & 1.4 b \(\pm\) 3.9 & 1.4 b \(\pm\) 7.5 & 1.7 f \(\mathrm{ghi}\) \(\pm\) 3.3 & 2.3 d \(\pm\) 2.3 & 2.1 d \(\pm\) 2.1 & 2.0 d \(\pm\) 1.7 \\ \multicolumn{2}{l}{2017} & 2.3 d \(\pm\) 3.1 & 1.2 b \(\pm\) 6.1 & 1.01 \(\pm\) 5.9 & 1.5 b \(\mathrm{hi}\) \(\pm\) 7.0 & 1.7 f \(\mathrm{ghi}\) \(\pm\) 4.7 & 1.9 d \(\mathrm{ghi}\) \(\pm\) 5.9 & 1.7 f \(\mathrm{ghi}\) \(\pm\) 4.1 \\ \hline \multirow{2}{*}{Percentage of infesteded tubers} & 2015 & 78.2 \(\pm\) 2.6 & 70 abd \(\pm\) 2.9 & 66 abc \(\pm\) 3.0 & 56 e \(\pm\) 5.1 & 6 e \(\mathrm{abc}\) \(\pm\) 5.2 & 59 e \(\mathrm{dede}\) \(\pm\) 2.9 & 62 b \(\mathrm{dede}\) \(\pm\) 3.2 \\  & 2016 & 73 ab \(\pm\) 7.1 & 5 efg \(\pm\) 3.7 & 55 efg \(\pm\) 6.0 & 68 abc \(\pm\) 3.0 & 69 abd \(\pm\) 8.6 & 76 a \(\pm\) 3.7 & 70 abd \(\pm\) 2.9 \\  & 2017 & 71 abc \(\pm\) 6.1 & 50 t \(\mathrm{g}\) \(\pm\) 8.9 & 48 g \(\pm\) 19.5 & 55 efg \(\pm\) 10.8 & 55 efg \(\pm\) 7.7 & 61 b \(\mathrm{dede}\) \(\pm\) 7.1 & 62 b \(\mathrm{dede}\) \(\pm\) 7.2 \\ \hline \multirow{2}{*}{Efficiency of protection} & 2015 & 144 \(\pm\) 14.4 & 157.1 \(\pm\) 5.7 & 38.4 d \(\pm\) 7.3 & 20.8 b \(\mathrm{si}\) \(\pm\) 8.6 & 32.1 d \(\pm\) 4.8 & 22.7 d \(\mathrm{g}\) \(\pm\) 7.5 \\  & 2016 & 45.2 b \(\pm\) 4.8 & 48.3 d \(\pm\) 8.0 & 34.8 d \(\pm\) 7.2 & 12.9 j \(\pm\) 15.3 & 20.2 b \(\mathrm{si}\) \(\pm\) 8.4 & 29.5 g \(\mathrm{gi}\) \(\pm\) 4.9 \\  & 2017 & 49.3 ab \(\pm\) 6.3 & 56.6 a \(\pm\) 4.5 & 33.4 d \(\pm\) 14.8 & 29.1 efg \(\pm\) 11.5 & 16.9 j \(\pm\) 28.5 & 25.2 f \(\mathrm{li}\) \(\pm\) 12.4 \\ \hline \multicolumn{2}{l}{\({}^{*}\)homogenous groups. [PERSON]’s test HSD, \(p=0.05\), \({}^{**}\)C\({}^{**}\)=Control; BCAR\({}_{0}\)=Polyvesum; WPCABs—Semade ASO; PCPEm—Kelpak S; EM—Em FarmA\({}^{**}\), UC—UGC—Max soft conditioner: BR—Bogn Rewital} & \multicolumn{2}{c}{} & \multicolumn{2}{c}{} \\ \hline \hline \end{tabular}
\end{table} 
Table 5: _Cont._Parameters, such as the average degree of infection determined according to a scale and the percentage of tubers with disease symptoms, are used to determine the severity of an infectious disease (DSI). However, each of them is of great utilitarian importance, particularly with regard to diseases whose symptoms blemish the surface of the tubers and thus determine their commercial value. When analyzing the share in the total yield of tubers with disease symptoms, it can be stated that silver scurf had the most stable occurrence (Figure 3). This is evidenced by the fact that between 2015 and 2017, the number of tubers with spots caused by _H. solani_ remained at a similar level, i.e., between 57.8% and 66.1%. Moreover, the average level of infection in the affected batch of tubers (ADIIT) in 2016 and 2017 was almost the same, namely 2.9 and 2.8, respectively, indicating that 20.6% and 19.6% of the tuber surface was affected by lesions. In the first year of the study, that level was 3.8, and changes on the skin of potato tubers caused by _H. solani_ covered almost 50% of the surface. With respect to other diseases, their incidence was more strongly determined by the weather conditions prevailing in the growing seasons. In the first two study seasons, the highest (88.2 and 76.7%) frequency of tubers with common scalp symptoms was found, covering, on an average, 24-20% of the surface of the tubers (ADIIT 3.4 and 2.9) (Figure 3). In the last growing season, however, the _Rhizoctonia solani_ fungus found the best conditions for growth since its scleroia were observed, on average, on 72.8% of the potato tubers.