Abstract: Background and Objectives: System of rice intensification (SRI) is a method of rice cultivation which has proven to increase the rice yield in comparison with the conventional method. One of main problem in SRI cultivation is weeds. Hence, this research was aimed to study the influence of several land flooding time on weeds, growth and yield component of rice. Materials and Methods: The research design was randomized block design in split-plot. The main plot was the land flooding time before planting in 7, 14, 21 and 28 days. The subplot was the three rice varieties, Pandan Wangi, PB 42 and Kuranji 012. Each treatment consisted of 3 blocks. The study was carried out in rice field in Koto Tangah, Padang, west Sumatera, Indonesia and Laboratory of Agronomy, Faculty of Agriculture, Andalas University, Indonesia from April-October, 2018. Results: The result showed 14 weeds species from 10 families found in the field. Based on Summed Dominance Ratio (SDR), Portulaca oleracea was the dominant species (37.10%). The productivity of Pandan Wangi variety was 11.18 t ha–1, PB-42 variety 10.23 t ha–1 and Kuranji 012 7.90 t ha–1. Conclusion: The land flooding time influenced the plant height, length of panicle and total grain/panicle. For yield components, the land flooding influenced the average of weight of 1000 grains, production per plot and productivity.