Study on the Stumping of Mulberry Trees by the Bulldozer

Abstract

We performed the experiment of stumping by the bulldozer in mulberry field.
The results were as follows.
Points of advantage.
1. The stumping efficiency of this method was about four times as much as that of tractor.
2. The work accuracy of this method was better than any others. The volume of pulling roots of a stump was vast, and the remains of roots in the soil were very little by this method.
3. By this method, the deep tillage and the stumping could be done at the same time. The depth of the tillage was about 60cm.
Points of disadvantage.
1. The cleaning of stumps were troublesome, for it was difficult to clean the stumps by only human hand. Implements such as hoe or reaping hook should be used to clean them.
2. The bulldozer might be easily damaged, than other methods, because of the frequency of clutching and changeing gear.