Slow acting nitrogenous fertilizer among the following is

Options

A. `NH_(2)CONH_(2)`
B. `NH_(4)NO_(3)`
C. CaNCN
D. `KNO_(3)`

Answer

C

Explanation

Calcium cyanamide is the slow acting nitrogenous fertilizer as it decompose very slowly.
`CaNCN+2H_(2)OtoCaCO_(3)+underset("Urea")(NH_(2)CONH_(2))`
`NH_(2)CONH_(2)+H_(2)OtoCO_(2)+2NH_(3)`
`NH_(3)underset("bacteria")overset("Nitrifying")to"Soluble nitrates" to "Plants"`.