Studies on non-tillage and direct seeding system of rice [Oryza sativa] production: Cases in the eastern part of Tottori prefecture and Leeton in Australia
1997
Higuchi, H. (Tottori Univ. (Japan). Faculty of Agriculture) | Kobayashi, H. | Matsumura, I. | Ito, S.
The prices of agricultural products such as rice in Japan are very high relative to the international standard. Retail rice prices in Japan range from 5 to 20 times as high as the U. S., Australia, China and Thailand. One of the reasons of such expensive prices in Japan is deeply related to small farm sizes, and the labor time for raising and transplanting of seedling is quite large in Japan. To improve productivity of rice production and to make the rice prices cheaper,it is indispensable to create large farm and make each stage of the production process more labor-efficient. So, we tried to introduce the non-tillage direct seeding system on rice production. The main results obtained were as follows: A lot of labour time was cut and production cost was reduced by using the non-tillage direct seeding system. The growth of rice plant on non-tillage direct seeding system was nearly equal to those on the tillage rice planting system. There were much weeds on the field of the non-tillage direct seeding system in comparison with the tillage rice planting system. The grain yields on non-tillage direct seeding system were a little bit less than those on tillage rice planting system
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