Abstract
Production costs of rice in Japan are very expensive comparing with those in the U. S. and Australia.
In this study, we investigated growth of rice plant, and checked the labor hours involved and the production costs by non-tillage transplanting system.
The main results obtained were as follows:
1) A 27% of labor time and a 1.5% of production costs reduced by using the non-tillage system. But the cost of transplanting machine itself slightly increased.
2) The growth of rice plant in non-tillage system was restrained a little.
3) The field with the non-tillage system had much weeds after transplanting. However, they were destroyed throughly by the application of the herbicide at that time.
4) The grain yield with a non-tillage system was less a little than those with the conventional tillage system.
