Question

why the excess use of nitrogen fertilizer is harmful

Answer 1

Excessive use of chemical fertilizers such as nitrogen fertilizers is not good. These chemical fertilizers get washed away because of irrigation. Hence, they are a cause of water pollution. Continuous use of fertilizers causes harm to useful or symbiotic microorganisms living in soil. They can also result in the reduction of soil fertility and increase in soil acidity when used in excessive amount.T hey cannot replenish the organic matter of soil. Excessive use of nitrogen fertilizers is also not good for growing plants as they make plants dry and brown by drawing away water from plants.