Chemical Properties of Sosei Paper Made from SPWS and BWS, and Fundamental Study on Growth Test of Green Pakchoi

Abstract

The chemical properties of sweet potatososeipaper and barleysoseipaper were determined by the ratio of N, P₂O₅, K₂O, and C in eachsoseipaper. A mineralization test of organic nitrogen was carried out under 30°C the condition in the dark, keeping the moisture content at 60% of the maximum water capacity in the soils. Furthermore, this research was applied to the growth test of Green Pakchoi in a pot made ofsoseipaper.
Results clarified the following :
Mineralization patterns of both types ofsoseipaper show similar changes, but the content of NO^-₃-N varies with the elapsed time.
In the Green Pakchoi growth test using a pot made ofsoseipaper, the plant absorbed components of the sosei paper, which proved to be effective as a fertilizer.
N.B, soseipaper (‘sosei’ means‘reborn’)
SPWS (sweet potato waste stillage)
BWS (barley waste stillage)