1974 Volume 36 Issue 2 Pages 235-242
The tests were carried out on a weedy paddy field and the field after mowing of wheat, Italian rye grass and rapeseed. These tests have been done in connection with number of tines (32, 16), speed of rotary shaft (high, medium, low), forward speed (0.2m/s, 0.4m/s), tilling depth (10cm, 5cm), number of tilling (1, 2) in the rotary tiller of 55cm width.
The results were as follows;
(1) In the field after wheat, rapeseed and the uncovered field, the size of the increment of cut had a little effect on the pulverizing action.
The pulverizing action of fairly large-sized iccrement of cut was good too.
(2) In the field after Italian rye grass, the pulverizing action of small-sized increment of cut [Hm0.2] was very excellent, and we were able to seed at once there.
(3) The puverizing action of 32 tines was generally better than that of 16 tines in the same lead. There was large difference between 32 tines and 16 tines in the pulverizing action on the fields after Italian rye grass and weedy paddy field. But there was small difference in case of the field after wheat and rapeseed.
(4) In the same sized increment of cut, the pulverizing action in tilling depth of 5cm was better than that in the depth of 10cm, except Italian rye grass.
(5) The pulverizing action in double tilling was nearly equal to that in one tilling.
(6) The pulverizing action in the field after Italian rye grass was worse than that of the other crops, in the same increment of cut.
(7) Power requirement of the rotary shaft in the field after Italian rye grass showed about 10% increase compared with that in the field after wheat in same tilling depth and increment of cut. The power for tilling to the depth of 10cm in the field after Italian rey grass was excessive for the engine.
(8) The power requirement of the rotary shaft in 32 tines and high speed was very large. That of [Hm 0.2] and [Ll 0.4] was especially large.
