The effect of biochar and salinity on SD is shown in Fig. 5. It
was found that salinity significantly decreased SD in wheat plants.
When analyzed across the two salinity levels there was a tendency
of increase in SD with biochar addition in relation to the nonbiochar
control. However, significant response of biochar on SD
was observed only at S1, where biochar treated plants had higher
SD than the non-biochar treated plants.