## 3 Results
Chlorophyll content (Chl\(a\) + \(b\)) was affected by microbiological/chemical fertilization in all experiments. Accordingly, this parameter reached the highest value equal to 14.72 \(\upmu\)g cm\({}^{-2}\) (I + \(\frac{1}{2}\)CF) in non-stress, 12.52 \(\upmu\)g cm\({}^{-2}\) (I + CF) in drought and 12.40 \(\upmu\)g cm\({}^{-2}\) (I + CF) in salinity conditions, which were significantly (26.2, 52.3, and 29.4%, respectively) higher than the control (-I - CF) in the related experiments (Table 4). The difference was not statistically significant among all the treatments for Chl\(a\)/\(b\) in all conditions (Table 4). Based on the results, the maximum root weight in non-stress condition was obtained after PGPB inoculation (I), with 0.55 g/plant which was 34.1% higher than that in control. Indeed, plants treated with I + CF and I + \(\frac{1}{2}\)CF produced heavier roots under drought (0.67 g/plant) and salinity (0.44 g/plant) conditions, which were 17.5 and 29.5% greater than those treated with control treatment, respectively (Table 4). The tallest plants in the non-stress and drought conditions were detected after the PGPB inoculation (I), equal to 71 and 59 cm, which were 16.4 and 27.3% higher than non-fertilized control plants, respectively. Conversely, the highest plant height under salinity condition was observed in I + CF treatment, which was significantly taller than control (31.9%) (Table 4). \begin{table}
\begin{tabular}{c c c c c c c} \hline \hline \multirow{2}{*}{**Experiment**} & \multirow{2}{*}{**PredpB** **Inoculation**} & \multirow{2}{*}{**Chemicals**} & **Plant Height** & **Root Weight** & **Chl\(a\) + \(b\)** & **Chl\(a\)/\(b\)** \\ \cline{3-6}  & & & **(\(\pm\)SD)** & **(\(\pm\)SD)** & **(\(\pm\)SD)** & **(\(\pm\)SD)** \\ \cline{3-6}  & & & **cm** & **g/plant** & **\(\upmu\)g cm\({}^{-2}\)** & \\ \hline \multirow{8}{*}{Non-stress} & \multirow{4}{*}{I} & \multirow{4}{*}{\(-\)CF} & 61.00 cd & 0.41 c & 11.66 b & 3.68 a \\  & & & (\(\pm\)7.11) & (\(\pm\)0.05) & (\(\pm\)1.09) & (\(\pm\)0.84) \\ \cline{3-6}  & & & 64.00 bc & 0.52 ab & 13.71 a & 03.41 a \\  & & & (\(\pm\)5.56) & (\(\pm\)0.07) & (\(\pm\)0.88) & (\(\pm\)0.46) \\ \cline{3-6}  & & & 68.33 ab & 0.48 b & 14.24 a & 3.59 a \\  & & & (\(\pm\)6.12) & (\(\pm\)0.06) & (\(\pm\)1.17) & (\(\pm\)0.45) \\ \cline{3-6}  & & & 71.00 a & 0.55 a & 13.49 a & 3.84 a \\  & & & (\(\pm\)0.8.01) & (\(\pm\)0.05) & (\(\pm\)0.90) & (\(\pm\)0.34) \\ \cline{3-6}  & & & 69.33 ab & 0.50 b & 14.72 a & 4.33 a \\  & & & (\(\pm\)6.05) & (\(\pm\)0.06) & (\(\pm\)1.05) & (\(\pm\)0.18) \\ \cline{3-6}  & & & 68.33 ab & 0.52 ab & 14.71 a & 4.16 a \\  & & & (\(\pm\)7.17) & (\(\pm\)0.07) & (\(\pm\)1.26) & (\(\pm\)0.54) \\ \hline \multirow{8}{*}{I} & \multirow{4}{*}{I} & \multirow{4}{*}{\(-\)CF} & 46.33 c & 0.57 bc & 8.22 c & 2.69 a \\  & & & (\(\pm\)3.68) & (\(\pm\)0.05) & (\(\pm\)1.18) & (\(\pm\)0.45) \\ \cline{3-6}  & & & 54.00 b & 0.55 bc & 8.68 bc & 3.07 a \\ \cline{3-6}  & & & (\(\pm\)4.46) & (\(\pm\)0.06) & (\(\pm\)1.04) & (\(\pm\)0.36) \\ \cline{3-6}  & & & 54.00 b & 0.64 ab & 9.89 b & 2.89 a \\ \cline{3-6}  & & & (\(\pm\)5.07) & (\(\pm\)0.08) & (\(\pm\)1.47) & (\(\pm\)0.67) \\ \cline{2-6}  & & & 59.00 a & 0.60 b & 11.65 a & 2.51 a \\ \cline{2-6}  & & & (\(\pm\)6.58) & (\(\pm\)0.06) & (\(\pm\)0.56) & (\(\pm\)0.24) \\ \cline{2-6}  & & & 55.33 b & 0.60 b & 11.30 a & 2.71 a \\ \cline{2-6}  & & & (\(\pm\)4.46) & (\(\pm\)0.07) & (\(\pm\)1.09) & (\(\pm\)0.57) \\ \cline{2-6}  & & & 52.00 b & 0.67 a & 12.52 a & 2.41 a \\ \cline{2-6}  & & & (\(\pm\)6.74) & (\(\pm\)0.05) & (\(\pm\)0.86) & (\(\pm\)0.35) \\ \hline \hline \end{tabular}
\end{table} 
Table 4: Plant height, fresh weight of root, chlorophyll content (Chl\(a\) + \(b\)), and the ratio of Chl\(a\) to Chl\(b\) in response to the chemical/microbiological fertilization management under non-stress, drought, and salinity conditions. The Pearson correlation coefficients indicated the grain yield in all experiments had a significant correlation with the fraction of light absorbed by PSII (\(P\)), qTQ, and PQ (\(p<0.05\)).