The various ways are available to reduce or prevent pollution of the river with nitrates, the most effective is:- reducing or not use of artificial or industrial-based nitrogen fertilizers and using biofertilizers.
Agriculture or farming contributes to water pollution when using fertilizers more than the required amount or easily lost fertilizers. This increases the of nutrients including nitrates in the river that cause the growth of algal bloom and eutrophication.
There are several ways to control the nitrates in the river:
- adjustment of using rate
- application of the right amount of nitrogen
- slow-release fertilizer
- nitrogen fertilizers when least susceptible to loss
- crop-rotation and use of legumes
Thus, the correct answer is: reducing or not using artificial or industrial-based nitrogen fertilizers and using biofertilizers.
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