Clean vegetable has today been a controversial problem taken care most. In recent years, the sprouts have been more and more widely cultivated because of economic benefits, free pesticides, good sources of nutrition and medicine but the yield of this vegetable is still quyte low. The result of the research shows that the treatment and combination of the compound including ash of the rice husk, straw and coconut fiber (the rate of 1: 1: 1) have a positive effect to figures about the height of plant, fresh weigh, dried weigh. In addition, the yield of the sprout is significantly higher than the sprout processed separately and is also higher than the sprout growing in clean soil that is produced by Sai Gon Xanh biotech company. In particular, it has the most positive effect when the first type of sprout seed is used; and the yield of the sprout reach the highest point, with the figure staying at 874.12g/tray (the figure is 2.47 times higher than in controlling and 1.30 times compared with the clean soil) that is 1.42 times higher than the second type of seed and 1.39 times in comparison with the third type of seed. The local planting environment could be used to grow the clean vegetable.
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