Field experiments were carried out on Taichung DARES from 1995 through 2000 to investigate the effects of long term application of rape seed meal on the growth of five rice cultivars, i.e., Tainung 67, Taichung 189, Tai keng 6 and Tai keng 9 of Japonica type, and Taichung sen 10 of Indica type. Conventional, semi-organic and organic farming were conducted in this study. Experimental results revealed that organic farming had higher yield than that of conventional farming on the first crop of 1996 and 2000. Organic farming showed no significant difference yield as compared to that of conventional farming on the second crop of 1995, 1998 and 1999. The results revealed that rape seed meal 2 ton/ha served as base fertilizers, 1 ton/ha served as top-dressing, and 1 ton/ha served at panicle initiation were practiced, that enough applied adsorption on growing of rice. On the second crop, organic farming had lower seed setting and 1,000-grain weight than that of conventional farming, organic farming had more serious diseases and pests that was the main effect factor. On the organic farming system, Taichung Sen 10 had higher kernels per panicle and yield than other cultivars. Tai Keng 9 had lower kernels per panicle, seed setting and yield than other cultivars.

Key words: rice (Oryza sativa L.), rape seed meal, growth .