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Agriculture · Q497

Soil Science

Graduate and Post Graduate · Agriculture · question 497

Q497

Due to Nitrification process soil pH

A.
Increases
B.
Decreases
Answer
C.
Does not affect soil pH
D.
None of the above

Answer: Option B

Solution

Answer: Option B
Solution:
Due to the nitrification process soil pH Decreases.
As the ammonium -N in fertilizers undergoes nitrification i.e. conversion of ammonium to nitrate in soils by bacteria, hydrogen (H+) is released, which can increase acidity. As the percentage of ammonium increases in a given fertilizer, the acidifying potential will also be increased, thus reducing pH.