Q277
The maximum fixation of K occurs
A.
in 1 : 1 type clay minerals
B.
in 1 : 2 type clay minerals
C.
in 2 : 2 type clay minerals
D.
in 2 : 1 type clay minerals
AnswerAnswer: Option D
Solution
Answer: Option D
Solution:
The maximum fixation of K occurs in 2 : 1 type clay minerals.Potassium fixation occurs when potassium ions form a surface complex with oxygen atoms in the interlayers of certain silicate clay minerals. Potassium availability is affected by a variety of factors, one of them is soil moisture, soil moisture is required to liberate fixed potassium and provide the soil solution necessary for plant intake.