2005 Volume 67 Issue 1 Pages 81-88
We used a prototype of the high-speed rotary tiller to investigate the influences on the accuracy of puddling and rice transplanting in three paddy fields by performing primary tillage and secondary tillage at a work speed 1.6 to 2.2 times that of the conventional tiller. As a result, we found that the average clod diameter over the whole layer in the section for the developed tiller was 0 to 40% larger after the primary tillage than that in the section for the conventional tiller. However, the state of the pulverized soil in the surface layer after puddling was almost equal to that in the section for the conventional tiller. And the work accuracy of rice transplanting between the two sections was almost equal.
