work conducted on the effect of conservation tillage on the soil bulk
density and cone index. Results of some studies show that conservation
tillage methods (reduced and zero tillage) increase the soil bulk density
and cone index compared to the conventional tillage (Afzalinia
and Zabihi, 2014; Taser and Metinoglu, 2005). There are also some research
results showing no significant effect of conservation tillage on
the soil bulk density and cone index (Afzalinia et al., 2011; Rasouli
et al., 2012).