Agriculture MCQs

2794 MCQs  (Page 240 of 280)

Availability of Zn is higher to crops in:_________?
A. Acid soils
B. Sodic soils
C. Saline-sodic soils
D. Saline soils
Roots usually occupy :__________?
A. 1% or less of soil volume
B. 10% or less of soil volume
C. 20% or less of soil volume
D. 30% or less of soil volume
What is the concentration of pure water?
A. 55.5 mol/l
B. 45.5 mol/l
C. Both a and b
D. None of these
Biological Weathering involves:
A. MAN and animals
B. Higher plants and roots
C. Micro- organisms
D. All of these
The process of transformation of raw organic matter into humus:
A. Calcification
B. Horizonation
C. Illuviation
D. Humification