Gusnidar, ., Yasin, S., Burbey, ., Yulnafatmawita, ., Saleh, S., & Andhika, R. (2012). Application of Rice Straw and Tithonia for Increasing Fertilizer Use Efficiency on Paddy Soil. JOURNAL OF TROPICAL SOILS, 17(2), 151–156. https://doi.org/10.5400/jts.2012.v17i2.151-156