Question

Which of these crops do not require nitrogen fertilizer?
A) Corn
B) Soyabean
C) Grass
D) Oats​

Answer 1

Answer:

Leguminous plants contain root nodules. Nitrogen fixing bacteria rhizobium is present in the root nodules of leguminous plants which fix the nitrogen naturally. So, it does not require an outer supplement for nitrogen or nitrogen fertilizer. Thus, the correct answer is 'Soyabean'.

Answer 2

Answer:

soya bean does not require nitrogen fertilizer because it has certain symbiotic micro organism called rhizobium in its root nodules which fix nitrogen in the plant and the soil.....