Section 4: Soil and Water Conservation Engineering
Watershed Management
Subtopic: Watershed characterization and land use capability classification
Question Statement:
In the standard USDA Land Capability Classification system, which group of land capability classes is considered suitable for regular arable crop cultivation with appropriate conservation practices?
Options:
(A) Classes I to IV
(B) Classes V to VIII
(C) Classes VI to VIII only
(D) Class VIII only
Answer Key:
A
Step-by-Step Solution & Explanation
The USDA Land Capability system classifies land into 8 Roman numeral classes:
- Classes I to IV: Suitable for cultivation (Class I requires no special measures; Class IV requires extreme care).
- Classes V to VIII: Unsuitable for cultivation; reserved for pasture, forestry, wildlife, and recreation. Option A is correct.