Abstract
The purpose of this study was to prevent soil adhesion on the rotary tiller cover. Vibration frequency of 25Hz, 30Hz and 35Hz was applied to the rotary tiller cover for a test soil condition. Distribution and weight of soil stuck on the rotary tiller cover were measured. As a result, it was found that for any test condition, the vibration frequency of 25Hz, 30Hz and 35Hz showed a remarkable effect on preventing soil adhesion to the cover, especially the vibration frequency of 30Hz was the most conspicuous.