What can be the impact of excessive/inappropriate use of nitrogenous fertilizers in agriculture? 1) Proliferation of nitrogen-fixing microorganisms in soil can occur. 2) Increase in the acidity of soil can take place. 3) Leaching of nitrate to the ground-water can occur. Select the correct answer using the codes given below:

Question

What can be the impact of excessive/inappropriate use of nitrogenous fertilizers in agriculture? 1) Proliferation of nitrogen-fixing microorganisms in soil can occur. 2) Increase in the acidity of soil can take place.  3) Leaching of nitrate to the ground-water can occur. Select the correct answer using the codes given below:

CollectorBabu · Accepted Answer

Correct Answer: 2 and 3 only. To answer the question, we need to analyse above statements. Considering statement 1, which describes that having more nitrogen in fertilizer, there result in proliferation of nitrogen, which causes less amounts of micro-organisms in the field. With one dose of fertilizer, there result in extra nitrogen in farms, so this shows that it is incorrect which eliminates options A and D. Statement 2 explains that if use of nitrogen fertilizer is in excess, then acidity in soil tends to increase, which is correct. Statement 3 describes that nitrogen fertilizer on breaking into nitrates will result in emissions of nitrous oxides from soil that travels through soil. As being water-soluble, it is available in groundwater causing certain effects, hence it is correct. We see that since both statements 2 and 3 are correct so option C is correct.

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