Establishment of environmental load reduction type weed control technology using legume green manure and organic fertilizers in paddy field
Japan Society for the Promotion of Science:Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)
Date (from‐to) : 2017/04 -2020/03
Author : Sugimoto Hideki
Weed control is the biggest bottleneck to the spread of organic rice cultivation. In paddy rice cultivation that does not use herbicides, various attempts have been made such as duck farming methods and the use of recycled paper, but they have not yet spread because of insufficient weed control effects, difficult handling, and high costs.
In this study we showed that incorporation with white clover, which is a leguminous crop before transplanting rice, and application of organic fertilizer rapeseed oil cake and rice bran on the surface of paddy field after transplanting dramatically suppresses the occurrence of weeds and increases rice yield. It is a rice paddy organic cultivation technology that is effective for ensuring food safety and security and reducing the environmental burden, at low cost, and that anyone can easily tackle. We believe that this cultivation method can be spread not only in Japan but also in the paddy fields of the Asian region.