The Effect of Charcoal from Recycled Japanese Cedar Waste on the Elimination of Organic Matter in Agricultural Land Drainage

The Effect of Charcoal from Recycled Japanese Cedar Waste on the Elimination of Organic Matter in
Agricultural Land Drainage
Laboratory of Water Environment Conservation, Department of
Hydraulic Engineering, National Institute for Rural Engineering, Japan,

Abstract
Charcoal from recycled Japanese cedar waste carbonized at high temperatures can eliminate the organic matter released from rice straw. According to a column test using rice straw water, if the percentage by volume of charcoal from recycled wood waste mixed in the soil is at least 20% (approximately), the organic matter elimination effect of the charcoal made from recycled waste can be maintained for 130 days or more.

From the results of a pot cultivation test using rice plants and field water, the effect lasts for approximately 120 days.