Which of the following is the most common limiting factor for nitrification in soil?
A
Temperature
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B
Tillage
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C
Availability of water
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D
Soil pH
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Solution
The correct option is C Soil pH Nitrification is the process by which ammonia is converted to nitrites and then nitrates. This process naturally occurs in the environment, where it is carried out by specialized bacteria. This process depends on a number of factors, like temperature, oxygen, pH, other inhibitors. Amongst all these factors, pH has strong effect on nitrification rates.