The Effects of Soil Minerals in Submerged Soil affecting Arsenic Accumulation of Canna glauca (L.)

Abstract

This research aimed to study the effects of soil minerals in experimental condition submerged soil to arsenic accumulation in Canna glauca (L.) including available P, extractable Fe, exchangeable Al, Ca, and Mg. As a result, the ranges of soil mineral mean were available P, extractable Fe, exchangeable Al, Ca, and Mg between 13.25 – 13.92, 478.17 – 528.83, 0.01642 – 0.02633, 735.33 – 1066.08 and 24.83 – 27.25 mg kg^-1, respectively. Means of total arsenic accumulation of C. glauca in arsenate higher than arsenite treated soils were 159.08 and 122.17 mg kg^-1. The tendency of total arsenic accumulation increased with the cultivation period being the highest value on 60 days. The factors predicting total arsenic accumulation of C.glauca were arsenic speciation, planting periods, pH, Eh, extractable Fe, exchangeable Al and Ca predicted 96%. The prediction model was -451.66 + 60.41 (arsenic speciation) + 35.66 (Day) + 22.51 (pH) - 0.50 (Eh) + 0.29 (extractable Fe) - 0.05 (exchangeable Ca) + 777.39 (exchangeable Al)