Hulu, V. P. J., Purnamawati, H., Susila, A. D., & Susanto, S. (2019). Sources and Rates of Potassium for Drip Irrigation of Polyethylene-mulched Bean Production. Journal of Tropical Crop Science, 6(03), 182–192. https://doi.org/10.29244/jtcs.6.03.182-192