BIOCHAR AND AZOLLA APPLICATION ON FERTILITY OF LEAD CONTAMINATED SOIL

BIOCHAR AND AZOLLA APPLICATION ON FERTILITY OF LEAD CONTAMINATED SOIL

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Potential for lead pollution does not only come from factory ribavirin coupon pollution but also from the air and the negative effects of fertilization.Rice is a hyper-accumulator plant that has the ability to store heavy metals without experiencing physiological disturbance, and this is very dangerous because rice is a staple food, especially in Indonesia.Biochar and Azolla are one of the solutions to produce quality rice even in heavy metals polluted land because of its ability to absorb heavy metals, especially Pb.This research aim was to explore the potential of several types of biochar from biomass abundance and combine it with azolla which is known as the best source of Nitrogen and organic matter.This research used factorial randomized block design (RBD) with 2 treatments and 3 replications.

The first treatment is the use of various types of biochar namely; without Biochar (B0), rice straw biochar (B1), rice husk Biochar (B2), coconut here fiber biochar (B3) and oil palm empty fruit bunches (B4).The second treatment using Azolla, namely; Without Azolla (A0), Azolla pinnata (A1) and Azolla mycrophylla (A2).The results showed that the best biochar for increasing soil organic content, N, P, K, soil CEC was rice husk biochar (B2) and the best azolla was Azolla microphyllla (A2) and both had the best interaction in increasing C organic and soil CEC.