Effect of blade shape and rotor speed of rotavator on pulverization and mixing quality in sandy loam soil

A study was conducted to fnd out the best combination of commercially available rotavator blade (L, C and J shape) and rotary speed of rotavator (180, 215 and 250 rpm) for pulverization and mixing quality in sandy loam soil. These treatment combinations were compared with control treatment (Pulverization with single pass of disc harrow followed by single pass of cultivator). J shape blades gave minimum pulverization index (3.06 mm) and C shape blades gave maximum mixing index (87.59% respectively) at 250 rpm. The average fuel consumption was maximum for J shape blades followed by L and C shape blades respectively for both pulverization and mixing operation. C shape blades had minimum fuel consumption as compared to other two blade shapes for both the operation. J shape blade at 250 rpm rotor speed was found best combination for pulverization and C shape blade for mixing as it consumes lesser energy (16.95%).