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

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

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Similar Questions

Select the correct option for the following matches:
$(1)$ For healthy growth of plants$(a)$ Nitrogen
$(2)$ As a part of vitamins$(b)$ Manganese
$(3)$ In enzymes associated with fat metabolism$(c)$ Cobalt
$(4)$ For the activity of phosphatase enzyme$(d)$ Magnesium

Ammonium sulphate is:

Ammonia provided to crop plants in the form of urea is industrially fixed by . . . . . . .

Assertion $A$: Leguminous plants increase soil fertility.
Reason $R$: Azotobacter fixes atmospheric $N_2$.

Identify the $INCORRECT$ statement regarding the role of minerals in plants.

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