Earthing up Performance of Direct-Mounted-Type Hiller for Taro Culture

——Working Conditions and Power-take-off Torque——

Abstract

We developed a direct-mounted-type hiller to use wide-row taro fields in Miyazaki, Japan, and examined the relationship between the test conditions and power-take-off (PTO) torque. Although earthing up height was linearly correlated with tilling depth, earthing up height was not correlated with the tilling pitch and was fixed. PTO torque was relative to tilling depth, tilling pitch, and the amount of tilling. PTO torque was not expressed by only a linear expression. Multiple regression analysis of PTO torque and tilling depth, tilling pitch, and soil density showed that the standardized partial regression coefficient was large in the order of tilling depth, tilling pitch, and soil density.