Which fertilizer act as a nitrification inhibitor and as a slow release N source

A. CDU

B. IBDU

C. N-serve

D. DCD

Answer: Option D

Solution(By Examveda Team)

DCD is the fertilizer that acts as a nitrification inhibitor and as a slow-release N source.
Dicyandiamide (DCD) is commonly used in fertilizer formulations as a nitrification inhibitor to slow the release of nitrogen into plant available forms that are also more prone to losses.
DCD works by blocking the active site, it also slows the conversion of ammonium to nitrate preventing the loss of nitrates.