The water holding capacity (WHC) of humus on a mass basis is . . . . . . . . times that of the silicate clays

A. 2 - 3

B. 4 - 5

C. 9 - 10

D. 6 - 15

Answer: Option B

Solution(By Examveda Team)

The water holding capacity (WHC) of humus on a mass basis is 4 - 5 times that of the silicate clays. The water holding capacity of a soil is calculated by summing the capacity of each layer in the root zone.
Humus can hold the equivalent of 80 - 90% of its weight in moisture, thus it increases the soil’s capacity to withstand drought.