2017 Cilt 31 Sayı 1

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    Poultry manure biochar reduces arsenic induced oxidative stress and arsenic levels in rice plants
    (Uludağ Üniversitesi, 2017-03-03) Sahin, Ozge; Taskın, Mehmet Burak; Kaya, Emre Can; Taskın, Havva
    The effectiveness of biochar on mitigating excessive arsenic (As) accumulation by rice plants was investigated. The treatments were as follows: control, 60 mg kg-1 As (As applied from NaAsO2) and 60 mg kg-1 As + 20 g kg-1 biochar. Biochar application to As contaminated soil enhanced the dry weight of rice plants. Dry weight of rice plants decreased by 60 mg kg-1 As treatment compared to control. Application of As increased As concentration of rice plants while 20 g kg-1 poultry manure biochar supply to the As contaminated soil significantly decreased the As concentration. Arsenic toxicity induced H2O2 accumulation however the application of biochar reduced H2O2 concentration of plants. Catalase (CAT) and ascorbate peroxidase (APX) activities significantly increased by biochar. Arsenic significantly increased N, S and Zn while decreased Cl, Fe, Cu and Mn concentration of plants. Biochar treatments significantly increased N, P, K and S concentrations of the plants as compared to control and As treated plants. It can be concluded that poultry manure biochar can be used for the prevention of As accumulation in rice plants.