The tilling characteristics of the plastic moldboard plow were described in this report.
The test was carried out comparing with the ordinary steel plow of the same size as plastic plow on two kinds of soils i. e. Konosu grei soil in paddy, Karako volcanic ashe soil in upland.
The following results were obtained.
1. The soil sticked rapidly and abundantly to the ordinary steel plow in upland plowing. But the weight of sticked soil to the plastic moldboard plow was so little as to be neglected.
2. The specific resistance of the plastic moldboard plow was about 80-85% of the ordinary steel plow in upland plowing.
3. The relocation of various points in the furrow slice after plowing by the plastic moldboard plow was in better condition than ordinary steel plow.
4. The tilling characteristics of the plastic moldboard plow were influenced by plowing speed