Other things being equal,a soil with 30% clay of the ____ type would be expected to have the greatest potassium -fixing capacity.
A)allophanic
B)2:1
C)1:1
D)crystalline iron oxide

Question

Quizplus · Accepted Answer

2:1 type clays, due to their structure and high surface area, have a greater capacity to fix potassium compared to other types listed. This is because the 2:1 clay minerals, such as montmorillonite, have layers that can trap potassium ions between them.

Other Things Being Equal,a Soil with 30% Clay of the ____