Question

The addition of which substance is LEAST likely to result in immediate nitrogen loss from the soil?

Q: Answer-The addition of which substance is LEAST likely to result in immediate nitrogen loss from the soil?

Nitrapyrin is a nitrification inhibitor it is designed to prevent the rapid conversion of ammonium to nitrate and thus reduces the potential for nitrogen loss through leaching and denitrification. Urea, calcium carbonate which can cause volatilization loss under alkaline conditions, and ammonium nitrate are all nitrogen sources that can rapidly transform into nitrate and potentially be lost from the soil.