Gusmini, ., Nishimura, K., Adrinal, . and Itani, T. (2014) “Leaching Behaviour of Nitrogen in Forage Rice Cultivation that Applied with Animal Manure”, JOURNAL OF TROPICAL SOILS, 18(3), pp. 209–216. doi: 10.5400/jts.2013.v18i3.209-216.