After construction of paddy field model, 15 lines of rice plants (Cultivar: Tsugaru-Roman) were transplanted
in each paddy field model with 10 cm planting distance. Fertilizers were applied as recommended dose for
Tsugaru-Roman cultivar. Oxidation-reduction potential (ORP) is referred to as redox potential (Eh) was
measured electrometrically in each soil layer using a ORP meter (Central Science Co., Ltd., Model UC-203).
Analysis of Cd in grains, roots, stems and leaves of rice plant by atomic absorption spectrometrys analysis
(Hitachi High –technologies. Co., Model Z2000). Growth of rice plants was investigated by measurement of
plant height, number of stem, dry matter weight, per plant grain yield and filled grain ratio.
pattern was 52.5 and 7.5 cm, respectively. Platinum electrodes were placed in each soil layer to measure the
value of oxidation reduction potential in soil.