Pulses are often grown as rotation crops
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This is because the roots of the pulses which are left behind after cultivation serve as good fertilizer to the next crop. as pulses have capability to fix nitrogen into soil.
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Answer:
Pulses are often grown as 'rotation crops' as they help in 'nitrogen fixation'.
Explanation:
Pulses come under the group legumes which are rich in protein with high nutritional value. These leguminous plants have root nodules that help to fix atmospheric nitrogen in the soil with the help of nitrogen-fixing bacteria.
Thus, pulses help in restoring the soil's fertility where they grow. So, they are used in crop rotation.
In crop rotation, the farmers grow a crop in one season, then plants pulses in the next season which is repeated by one or two crops in the coming seasons followed by pulses to restore the soil's fertility.
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