NH+4 fixation takes place in
A. Vermiculite and illite
B. Montmorillonite and kaolinite
C. Chlorite and kaolinite
D. All of these
Answer: Option A
Solution(By Examveda Team)
Fixation of NH+4 takes place in crystal lattices of different clay minerals like montmorillonite, illite and vermiculite. Illite typically weathers to vermiculite through the release of potassium ions from the interlayer.Fixation of ammonium ions by clay minerals is an alternate way of building the nitrogen pool in the soil to optimize N crop recovery and minimize losses.
This Question Belongs to Agriculture >> Soil Science
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