2020 | Japan | Hiroki Matsuhashi, Takuma Miyaki

Controlling soil runoff and increasing food production by the functional water collection system using traditional Japanese soil solidification technology: “Ta-Ta-Ki”

Water issue adressed: Too little

In this research, by applying “Ta-Ta-Ki” soil, a traditional Japanese soil solidification technology, we developed a novel multifunctional water collection system to control soil runoff and increase food production with low environmental impact and low cost, and this system can be adapted to developing countries, especially in the arid and semi-arid areas.
(1) the water storage by collection and retention of rainwater during the rainy season; (2) the supply of trients to poor soil; and (3) the control of soil runoff caused by rainfall.
This inexpensive solidification technology with high operability can be an effective solution to environmental problems around the world, besides the areas with the demand for food production, as mentioned above.

This is how I came up with the idea for this project:

We learned in geography class that many developing countries in dry area have food problems because it is difficulut to collect agricultural water. Inspired by Japan's national sport "sumo wrestling", we started to develop a new multifunctional water collection system based on “Ta-Ta-Ki” soil to solve food and water problems.


Ania Andersch

Programme manager ania.andersch@siwi.org +46 8 121 360 59