## 3 Results and Discussion
### Wheat Yield
\begin{table}
\begin{tabular}{c c c c c c c c c} \hline \hline
**Nitrogen** & **Tillage/** & **Faraj** & **I.C** & **Louiza** & **M.G** & **Nachit** & **Mean** & **Mean** \\ \hline
20 & NT & 7.85 (1.74) & 10.25 (1.69) & 6.60 (1.31) & 9.21 (1.87) & 9.95 (1.55) & 8.77 (1.98) & 8.54 (2.03) \\  & CT & 10.76 (3.12) & 7.38 (1.13) & 6.34 (1.30) & 8.34 (0.31) & 8.75 (1.51) & 8.31 (2.12) & A \\ \hline
40 & NT & 8.17 (1.80) & 9.04 (1.93) & 5.48 (2.13) & 9.24 (1.25) & 9.00 (3.11) & 8.18 (2.31) & 8.01 (1.91) \\  & CT & 9.01 (1.12) & 7.54 (1.29) & 6.79 (2.07) & 7.48 (0.94) & 8.32 (1.48) & 7.83 (1.45) & A \\ \hline
60 & NT & 7.90 (1.73) & 7.88 (2.29) & 7.37 (0.38) & 8.95 (1.39) & 8.60 (0.35) & 8.14 (1.35) & 7.77 (1.50) \\  & CT & 8.93 (0.25) & 7.43 (2.12) & 5.69 (0.91) & 7.13 (1.72) & 7.81 (1.10) & 7.40 (1.59) & A \\ \hline Mean & NT & 7.97 (1.53) & 9.06 (2.00) & 6.48 (1.51) & 9.13 (1.33) & 9.18 (1.85) & 8.37 (1.90) & \\  & CT & 9.57 (1.89) & 7.45 (1.37) & 6.27 (1.39) & 7.65 (1.13) & 8.29 (1.26) & 7.85 (1.75) & \\ \hline \multicolumn{2}{c}{Mean} & \multicolumn{1}{c}{8.77 (1.86) a} & \multicolumn{1}{c}{8.25 (1.86) a} & \multicolumn{1}{c}{6.38 (1.41) b} & \multicolumn{1}{c}{8.39 (1.42) a} & \multicolumn{1}{c}{8.74 (1.60) a} & \multicolumn{1}{c}{8.11 (1.83)} \\ \hline \hline \end{tabular}
\end{table} 
Table 10: Wheat straw yield (t ha\({}^{-1}\)) measured at the end of the experiment during the 2020–2021 cropping season for all tillage types, nitrogen doses (kg N ha\({}^{-1}\)), and varieties. Means (\(n=3\)) with (standard deviations) followed by the same letter are not statistically different at the 0.05 significance level according to [PERSON]’s post hoc test. NT= no tillage, CT= conventional tillage. \begin{table}
\begin{tabular}{c c c c c c c c c} \hline \hline
**Nitrogen** & **Tillage/** & **Faraj** & **I.C** & **Louiza** & **M.G** & **Nachit** & **Mean** & **Mean** \\
**(kg N ha\({}^{-1}\))** & **Variety** & & & & & & & \\ \hline
20 & NT & 4.31 (0.34) & 4.74 (0.42) & 3.42 (0.49) & 4.52 (0.96) & 4.47 (0.83) & 4.29 (0.73) & 4.09 (0.75) \\  & CT & 4.46 (0.34) & 3.87 (0.70) & 3.21 (0.55) & 3.40 (0.41) & 4.52 (0.74) & 3.89 (0.73) & A \\ \hline
40 & NT & 4.32 (0.17) & 3.88 (0.66) & 2.93 (0.66) & 3.97 (0.48) & 5.14 (1.03) & 4.05 (0.93) & 3.92 (0.81) \\  & CT & 3.77 (0.35) & 4.24 (0.19) & 3.34 (0.55) & 3.05 (0.13) & 4.48 (0.76) & 3.78 (0.67) & A \\ \hline
60 & NT & 4.04 (0.59) & 3.93 (0.44) & 3.17 (0.47) & 3.95 (0.13) & 4.24 (0.03) & 3.86 (0.51) & 3.72 (0.56) \\  & CT & 3.86 (0.20) & 3.63 (0.89) & 3.01 (0.15) & 3.43 (0.73) & 3.90 (0.50) & 3.57 (0.59) & A \\ \hline Mean & NT & 4.22 (0.38) & 4.18 (0.61) & 3.17 (0.52) & 4.15 (0.61) & 4.62 (0.78) & 4.07 (0.75) & \\  & CT & 4.03 (0.42) & 3.91 (0.63) & 3.19 (0.42) & 3.29 (0.46) & 4.30 (0.66) & 3.75 (0.67) & \\ \hline Mean & & 4.13 (0.40) a & 4.05 (0.62) b & 3.18 (0.46) c & 3.72 (0.68) b & 4.46 (0.72) a & 3.91 (0.72) & \\ \hline \hline \end{tabular}
\end{table} 
Table 9: Wheat grain yield (t ha\({}^{-1}\)) measured at the end of the experiment during the 2020–2021 cropping season for all tillage types, nitrogen doses (kg N ha\({}^{-1}\)), and varieties. Means (\(n=3\)) with standard deviations followed by the same letter are not statistically different at the 0.05 significance level according to [PERSON]’s post hoc test. NT= no tillage, CT= conventional tillage. In terms of straw yield, [PERSON]'s post hoc test identified two groups of varieties: in the first group, Louiza, with the lowest mean yield (6.38 t ha\({}^{-1}\)), and in the second group, the four remaining varieties, with mean yields ranging between 8.25 and 8.77 t ha\({}^{-1}\). In terms of tillage type, mean straw yields were 7.85 t ha\({}^{-1}\) for CT and 8.37 t ha\({}^{-1}\) for NT. For nitrogen doses, straw yields varied between 7.77 and 8.54 t ha\({}^{-1}\) with 60 and 20 kg N ha\({}^{-1}\), respectively. Comparing NT to CT, the former resulted in higher grain and straw yields with most combinations (11 out of 15) nitrogen doses and varieties (Tables 9 and 10).