We need information about the growth of the Hydrilla plant in different nutrient media, which are sheep and cow waste and chemical fertilizer (NPK), and the possibility of the plant benefiting from them, the mechanism of the plant in dealing with these nutrients, the nature of the plant in benefiting from them, the biology of the plant in absorption, and the benefit of the plant in feeding common carp fish as an alternative to soybeans and barley.

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