1999 Volume 61 Issue 3 Pages 95-103
The evaluation of soil mixing characteristics after rotary tilling is one of the important factors for crop cultivation. This paper describes the results between the soil mixing model presented in the first report and field tillage tests performed in two types of field, an upland and a paddy field. The model showed a good agreement in the upper and middle soil layers. Furthermore, the model led to a desirable design of a rotary cover which would correspond to be based on the characteristics of backward throwing of the tilled soil by the blades.