Effectiveness of Reducing P Fertilizer and Adding Fish Pond Mud Waste on Growth and Yield of Soybean in PeatlandErina Riak Asie, Nyahu Rumbang, Sih Winarti and Soaloon SinagaE3S Web Conf., 31 (2018) 05005DOI: https://doi.org/10.1051/e3sconf/20183105005