Question
Nitrogen is an essential nutrient for plant growth but farmers who cultivate pulse crops like green gram, bengal gram, black gram, etc., do not add nitrogenous fertilizers to the crops. Why?
Answer: Option D
:
D
Roots of pulses (leguminous plants) have a symbiotic association with a bacterium called rhizobium, which fixes atmospheric nitrogen into the soil. Adding more nitrogenous fertilizers make the level of nitrogen in the soil too much for the crops. Hence, farmers need not use nitrogenous fertilizers.
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:
D
Roots of pulses (leguminous plants) have a symbiotic association with a bacterium called rhizobium, which fixes atmospheric nitrogen into the soil. Adding more nitrogenous fertilizers make the level of nitrogen in the soil too much for the crops. Hence, farmers need not use nitrogenous fertilizers.
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