Evaluation Content of Pb in Phase Vegetative and Generative of Paddy by Aplication Azolla and Husk Biochar in Contaminated Paddy Field

B. Hidayat, A. Rauf, T. Sabrina, Ali Jamil


Emergence of factory near paddy fields in Indonesia has caused lead (Pb) pollution in body part of paddy especially on grain. The aimed of this reseach to determine the influence of biochar and azolla in reducing bioavailability of Pb on the vegetative and generative phase in paddy fields. Research conducted on contaminated paddy field in the village of Dagang Klambir Tanjung Morawa A by using a randomized block design factorial, the first factor was azolla, with three levels, without azolla (A0), Azolla pinnata (A1) and Azolla micropyhlla (A2). The second was biochar (B) with a two-stage treatments, without biochar (BO), and biochar rice husk (B1). The results showed that application azolla and biochar was not influence soil pH on paddy soil in vegetative and generative phase, concentration Pb in vegetative lower than generative at parts of paddy, Azolla micropylla with husk biochar decreased Pb concentration in grain and husk.


rice paddy; lead; biochar; Azolla; vegetative; generative.

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