An experimental shooter-type planter to be applied for the planting of taro-seeds was developed, with the examination of planting position of the device, performed. The results obtained are as follows.
1) The proper planting rate of the individual seed (Variety: Akamedaikichi) was 92-82% under the planting speed of 0.17-0.37m/s, respectively. The planting rate at the diagonal position was 4-14% under the planting speed of 0.17-0.37m/s, respectively.
2) Judging from the operation load for an assistant operator, the proper planting speed was under 0.37m/s.
3) The proper planting rate of the individual seed (Variety: Ishikawawasemaru) was 95-88% under the planting speed of 0.17-0.37m/s. The planting rate at the diagonal position was 2-5% under the planting speed of 0.17-0.37m/s, respectively.
4) The planting space and the planting depth were 300±58mm 120±25mm in case of the two varieties, respectively.
5) The planting rates of the two varieties were obtained as 91% (Akamedaikichi) and 93% (Ishikawawasemaru) under the proper planting speed of 0.27m/s. The working efficiency was 1.16h/10a, which was about 5 times higher as compared with the customary operation. The practical usage of this machine was well recognized.