Q8 of 43 Page 18

Write two advantages of nitrogen fixation.

(a) Nitrogen-fixing bacteria fix atmospheric nitrogen in the root nodules of the leguminous plants without using fertilizers.


(b) It enhances soil fertility by adding nitrogenous compound such as nitrate to the soil. With this other crop also benefitted.


More from this chapter

All 43 →
6

Write the name of a man-made chemical substance that is rich in inorganic nutrients.

 7

Which implement is used for harvesting?

 9

Explain the causes for the frequency of irrigation of crops being higher in the summer season.

 10

A farmer was growing only paddy in a particular field for five successive generations. He found that the yield decreases every time. Give reasons and how can this problem be solved?