Agricultural/Bioengineering Soil and Water Conservation Engineering

Question 1

Which type of erosion is caused by the impact of raindrops on exposed soil?

Accepted Answer

Splash erosion

Answer

Splash erosion occurs when raindrop impact detaches and disperses soil particles.

Question 2

What is the primary purpose of a contour bund in soil conservation?

Accepted Answer

Intercept and slow runoff on slopes

Answer

Contour bunds are earthen embankments built along the contour to intercept runoff and reduce erosion.

Question 3

The Universal Soil Loss Equation (USLE) factor 'C' represents which parameter?

Accepted Answer

Crop management

Answer

The C factor in USLE represents the cover and management factor related to cropping and tillage practices.

Question 4

Which irrigation method has the highest water use efficiency in field crops?

Accepted Answer

Drip irrigation

Answer

Drip irrigation delivers water directly to the root zone, typically achieving 90–95% efficiency.

Question 5

What does the term 'field capacity' refer to in soil-water relationships?

Accepted Answer

Water content after free drainage has ceased

Answer

Field capacity is the soil moisture content remaining after excess water has drained away under gravity.

Agricultural/Bioengineering Practice Test