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Question

Which of the following plants are used as green manure in crop fields and in sandy soils?

A
Crotalaria juncea and Alhagi camelorum
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B
Calatropis procera and Phyllanthus niruri
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C
Saccharum munja and Lantana camara
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D
Dichanthium annulatum and Azolla nilotica
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Solution

The correct option is A Crotalaria juncea and Alhagi camelorum
A- Crotalaria juncea (sunnhemp) and Alhagi camelorum are among plants which are used as green manure in India. Green manuring is the practice of ploughing green plants into the soil for improving fertility. Green manure provides organic matter & nutrients like nitrogen and phosphorus to the soil.
So, the correct answer is 'Crotalaria juncea and Alhagi camelorum'

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