Agriculture MCQs

2794 MCQs  (Page 251 of 280)

The relative abundance of three types of rocks ( igneous-metamorphic- sedimentary) in the earth’s crust is_________?
A. 12.5 % -12.5 % – 75%
B. 64.7 % – 27.4 % – 7.9 %
C. None of a & b
D. 7.9% – 27.7 % – 64.4
Losses of soil water not includes_________?
A. Direct evaporation from the soil & transpiration from vegetation
B. Down-ward drainage
C. Hydroponics loss
D. Surface run-off from the field
Soil samples are collected:
A. From the field with immediate application of fertilizer or amendments
B. Field with upper white layer of salts
C. Boundaries of the field
D. None of these