Question
Which of the following plants are used as green manure in crop fields and in sandy soils?
Saccharum munja and Lantana camara
Dichanthium annulatum and Azolla nilotica
Crotalaria juncea and Alhagi camelorum
Calotropis procera and Phyllanthus niruri
Solution
C.
Crotalaria juncea and Alhagi camelorum
Crotalaria juncea (Sunnhemp) and Alhagi camelorum are among the plants which are used as green manures in India. These green manures help the soil through increasement of area and water holding capacity and fertility.
