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

Sheet erosion

Answer

Rill erosion

Answer

Gully erosion

Question 2

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

Accepted Answer

Intercept and slow runoff on slopes

Answer

Increase soil nitrogen

Answer

Drain excess water from fields

Answer

Prevent weed growth

Question 3

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

Accepted Answer

Crop management

Answer

Slope length

Answer

Conservation practice

Answer

Soil erodibility

Question 4

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

Accepted Answer

Drip irrigation

Answer

Flood irrigation

Answer

Furrow irrigation

Answer

Sprinkler irrigation

Question 5

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

Accepted Answer

Water content after free drainage has ceased

Answer

Maximum water a soil can hold before runoff

Answer

Minimum water needed for crop germination

Answer

Osmotic potential of soil water

Question 6

A grassed waterway is used primarily to:

Accepted Answer

Safely convey runoff without causing erosion

Answer

Increase crop yield in low areas

Answer

Improve soil aeration

Answer

Reduce fertilizer leaching