Question
Which one of the following crops enriches nitrogen
content in the soil?Solution
Many legumes (alfalfa, clover, peas, beans, lentils, soybeans, peanuts and others) contain symbiotic bacteria called Rhizobia within root nodules of their root systems. These bacteria have the special ability of fixing nitrogen from atmospheric, molecular nitrogen (N₂ ) into ammonia (NH₃ ).
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