Which of these crops do not require nitrogen fertilizer?
A
Corn
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B
Soyabean
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C
Grass
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D
Oats
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Solution
The correct option is A Soyabean Soyabean is a legume. 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.