There is increasing sewage discharge due to increased industrialization. However, sewage has a rich content of some substances which make it suitable for the growth of some plants like sugarcane, groundnut, tomato, fodder crops etc. A special name has been given to this kind of farming that uses industrial waste for growing some crops what is that? Which substances in the sewage help the plants to grow.
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Those things are phosphoros,nitrogen,ammonia and nitrite forms.
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