Increasing efficiency of rice seed production by using transplanting machine

Transplanting machine is very importance in rice seed production, because it’s increasing the efficiency of rice seed production by decreasing former crop rice seed and workers. The purpose of study was researching on seedling medias, seed rates, kinds of nutrient for sprayed on seedling in concrete seed bed nursery, seedling ages, number of seedlings/clump, clump spacing and compare machine transplanting method with other planting methods for increasing yields and quality of rice seed with easy management. The results showed that burned hull was convenient for seedling media, because it was easy to find and low cost, but only used in soil seed bed nursery. For concrete seed nursery, mixing of burned hull with soil was better. The optimal seeding rate was 200–250 g dry seed/tray, caused to using 45 and 40 seeding trays/rai. by respectively. In concrete seed bed nursery, application of 15 g urea and 15 cc silicon solution (Si 20%). mixed in 20 L water need for increasing height and vigor seedling. 18 days seedling for transplanting had appropriate height for transplanting. However for rice seed production, 10–12 seedlings/clump and 16 cm clump spacing was better in case of former crop rice seed control. Weedy rice herbicide control with dimethenamid (FrontierR ) and oxadiargyl (RaftR) in directed seed broadcasting could control former crop rice seed better than transplanting, but highly limit using especially in area with water level uncontrollable and in rainy former crop rice seed better than transplanting machine but it required more labors and not rapidly like transplanting machine, so transplanting was more efficiency