Influence of Growth and Yield by Diffrence of Seeding Accuracy and Depth on Green Soybeans Cultivation used Up-cut Type Ridging and Mulching Seeder = Influence of Growth and Yield by Diffrence of Seeding Accuracy and Depth on Green Soybeans Cultivation used Up-cut Type Ridging and Mulching Seeder

다국어 초록 (Multilingual Abstract)

A cultivation outline of green soybeans could not set mechanical seeding technics to have difference of mulched soil temperature at any seeding season. Especially, the early cropping type of green soybeans seeding that used mulcting method to get high emergence rate on low temperature season have been high labor load to seed by manual operation. Therefore, the purpose of this study was to develop high efficiency and precision mechanical seeding technique which have ridging and mulching same time. We developed prototype seeding machine combined with up-cut rotary, mulching seeder and the molding implement. After that, we made control device to move diching device for up and down direction. We investigated the seeding accuracy and seeding depth of the prototype seeder, and evaluated the growth and yield, respectively. As a result, it is showed that the seeding accuracy is as same as manual seeding. Although the seeding depth was shallow compared to the conventional manual seeding, it can increase seeding depth than conventional seeding. However, the measured seeding depths were shallower than the set values. This is reason why was influenced of soil compression, posture of the seeding part and covered soil after seeding. The plant length at harvest time might become longer as the seeding depth got deeper. So, we considered that it is possible to do multiple simultaneous work used up-cut ridging and mulching seeder.