Question 13
Nitrogen is an essential nutrient for plant growth. But farmers who cultivate pulse crops like green gram, bengal gram, black gram, etc. do not apply nitrogenous fertilizers during cultivation. Why?

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Solution

Roots of pulses (leguminous plants) have a symbiotic association with a bacterium called Rhizobium which fixes atmospheric nitrogen into the soil. Hence, farmers need not use nitrogenous fertilizers.

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Question 13
Nitrogen is an essential nutrient for plant growth. But farmers who cultivate pulse crops like green gram, bengal gram, black gram, etc. do not apply nitrogenous fertilisers during cultivation. Why?

Question 13
Nitrogen is an essential nutrient for plant growth. But farmers who cultivate pulse crops like green gram, bengal gram, black gram, etc. do not apply nitrogenous fertilisers during cultivation. Why?

Question 29
Fill in the blanks

(a) Photoperiod affect the___.

(b) Kharif crops are cultivated from___ to ___.

(d) Paddy, maize, green gram and black gram are ___ crops.

(e) Wheat, gram, pea, mustard are ___ crops.

Q. Pulses like black gram, green gram and oil seeds are mostly grown during the ___ season.

Q. How many crops do farmers cultivate during the monsoon in Salakamcheruvu?

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Question 13 Nitrogen is an essential nutrient for plant growth. But farmers who cultivate pulse crops like green gram, bengal gram, black gram, etc. do not apply nitrogenous fertilizers during cultivation. Why?

Roots of pulses (leguminous plants) have a symbiotic association with a bacterium called Rhizobium which fixes atmospheric nitrogen into the soil. Hence, farmers need not use nitrogenous fertilizers.

Question 13
Nitrogen is an essential nutrient for plant growth. But farmers who cultivate pulse crops like green gram, bengal gram, black gram, etc. do not apply nitrogenous fertilizers during cultivation. Why?