This research aims at knowing whether (1) lateng ngiu leaf (Laportea stimulans) can be used as traditional rice pest control on irrigated rice field; (2) the implementation of this practicum model in the learning process with irrigated rice field ecosystem materials can improve learning outcomes. This research applied complete randomized design. Each rice field rat (Rattus-rattus brevicaudatus) used as a sample was given a portion of cooked rice mixed with 8 doses of lateng ngiu leaf (2.5, 5, 7.5, 10, 12.5, 15, 17.5 and 20 grams). The frequency of replicate is four times making the total number of samples as many as 32 rats. All subjects carried out a practicum after discussing the theories. Based on the data analysis, it could be concluded that (1) lateng ngiu leaf could be used as traditional rice pest control on irrigated rice field, where 10-gram dose of lateng ngiu leaf was the most effective and efficient one; (2) the implementation of this practicum model in the learning process with irrigated rice field ecosystem materials could improve learning outcomes.