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| In the past, Water Hyacinth grew and spread rapidly. A lot of money was spent in order to destroy it. Nowadays, it can be brought to use as organic fertilizer, mulching and to clean the sewage According to a royal comment concerning the advantage of water hyacinth, Makkasan swamp is improved by planting water hyacinth 10% of water area. Divide it into stalls : 5 x 20 meters per each stall. Its purpose is to control and conserve environmental condition. Water Hyacinth can absorb metals like copper and lead from industrial sewage and living place sewage. It also can absorb mercury and lead melt in the liquid. Water Hyacinth can absorb minerals and inorganic substance from the sewage. It can be grown rapidly in every kinds of condition. As a result, after using it to clean the sewage, it is brought to use as organic fertilizer like compost or mulching. Mr. Sima Morakul, the Director General of Land Development Department, suggested that Water Hyacinth could be brought to make compost in order to add nutrients to plant and solve the problem of lacking soil fertility. Branch roots in Water Hyacinth can absorb plant nutrients and keep them into its trunks and leaves. 30 tons of Water Hyacinth can make 5.5 |
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Chemical properties of Water Hyacinth in compost is to add nutrients to soil. It gradually emits nutrients useful to plants in long period. It also resists acid and alkaline in soil and adds food source for microbe. As a result, there is a large amount of microbe and microbial activity. In conclusion, Water Hyacinth can be brought to make compost, mulching and to clean the sewage. It is a good way to change waste products into useful things. For more information, please contact Organic Matter and Waste Products Subdivision, Soil and Water Conservation Division, Land Development Department. E-mail : scd_5@ldd.go.th |
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