. The objectives of the research were to study effects of weed mowing using System Rice Intensification (SRI) and conventional transplanting system on growth and yield of rice. The experiment was arranged in a split plot design using factorial randomized block design which consists of 2 checked factors i.e main plot that is transplanting system consists of: SRI and conventional and sub plot that is effect of weed mowing consists of three levels: 20 DAT mowing, 40 DAT mowing, and 60 DAT mowing. Result showed that the mowing of weed affect the growth and yield of rice which conducted using SRI and conventional transplanting system. The best growth and yield in this experiment was obtained by using SRI transplanting system and 20 DAT. While the worst was obtained by using conventional transplanting system and 60 DAT