Agricultural Science

Question 1

1The washing down of nutrients beyond the root zone is

Easy

A. leaching B. erosion C. infiltration D. capillarity

Question 2

2Supplying water to crops artificially is

Easy

A. percolation B. leaching C. drainage D. irrigation

Question 3

3Building raised banks of earth across a slope to reduce run-off is

Easy

A. terracing B. bush fallowing C. clear felling D. monocropping

Question 4

4The soil texture with the highest water-holding capacity is

Hard

A. loamy sand B. sand C. clay D. gravel

Question 5

5Which irrigation method delivers water slowly to the roots through pipes and emitters?

Easy

A. basin irrigation B. drip irrigation C. furrow irrigation D. flood irrigation

Question 6

6Waterlogged soils are improved by

Easy

A. drainage B. burning C. irrigation D. compacting

Question 7

7The mixture of weathered rock, organic matter, water and air that supports plants is

Easy

A. humus only B. parent rock C. sand only D. soil

Question 8

8Drip irrigation is preferred in dry areas because it

Hard

A. floods the field B. washes away salt C. needs no pipes D. saves water

Question 9

9The removal of topsoil by wind or water is

Easy

A. soil erosion B. liming C. weathering D. leaching

Question 10

10Water held so tightly around soil particles that plants cannot use it is

Easy

A. run-off B. hygroscopic water C. capillary water D. gravitational water