Allied & ICAR Exam Bank • ALLIED_0451 NAT • 2 Marks

Section 4: Soil and Water Conservation Engineering

Soil Erosion Mechanics and USLE

Subtopic: Soil Erosion Mechanics and USLE

Question Statement:

Introducing contour farming on a field reduces the practice factor $P$ from $1.0$ to $0.6$, keeping all other USLE factors unchanged. The percentage reduction in annual soil loss is:

Answer Key:

40

Step-by-Step Solution & Explanation

Reduction $= (1.0 - 0.6)/1.0 \times 100\% = 40.0\%$.
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