Simarmata, Tualar, Hersanti., Tien Turmuktini, FitriatinBetty N., SetiawatiMieke R., and Purwanto. 2018. “Application of Bioameliorant and Biofertilizers to Increase the Soil Health and Rice Productivity”. HAYATI Journal of Biosciences 23 (4), 181. https://doi.org/10.4308/hjb.23.4.181.