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

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

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Similar Questions

For the limited nitrogen that is present in the soil,microbes compete with

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

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

What is nutrient immobilisation?

Ammonium sulphate is:

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