Soil Water and Soil Conservation
Agricultural Science · 50 practice questions
Soil water — importance, sources, movement, management and conservation; soil conservation — meaning, importance, causes/effects/prevention of leaching, erosion, continuous cropping, burning; irrigation and drainage methods.
- Compare capillary, gravitational and hygroscopic water and determine water-holding capacity and wilting points.
- Identify causes of erosion/leaching and their control methods.
- Classify irrigation/drainage systems and examine their importance and challenges.
Try a few questions
- Practice question 1
Contour ploughing mainly helps to control erosion by
- A.ploughing straight up and down a slope
- B.following the natural contours of the land to slow water flow
- C.removing topsoil deliberately from a slope
- D.increasing the speed of water runoff
Show the answer
B. following the natural contours of the land to slow water flow
Ploughing along contours slows runoff, reducing erosion.
- Practice question 2
A major effect of severe soil erosion on agriculture is
- A.an increase in the depth of fertile topsoil
- B.the loss of fertile topsoil, leading to reduced crop yields
- C.improved water infiltration across the affected land
- D.a guaranteed increase in future crop productivity
Show the answer
B. the loss of fertile topsoil, leading to reduced crop yields
Erosion strips away the nutrient-rich topsoil that crops depend on.
- Practice question 3
Grass waterways, as an erosion control measure, mainly function to
- A.concentrate runoff into bare, unprotected channels
- B.channel runoff safely through grass-covered drainage paths, reducing gully formation
- C.eliminate the need for any drainage on sloped land
- D.increase the rate of soil loss along a slope
Show the answer
B. channel runoff safely through grass-covered drainage paths, reducing gully formation
Grassed channels safely carry runoff while resisting the erosive cutting of gullies.
More UTME Agricultural Science topics
- Factors of Agricultural Production
- Farm Surveying and Farmstead Planning
- Forms and Classification of Major Farm Animals in West Africa
- Meaning and Scope of Agriculture
- Rocks and Soil Formation
- Basic Economic Principles
- General Terminologies in Animal Production
- Importance of Agriculture
- Simple Farm Tools
- Agricultural Ecology
- Anatomy and Physiology of Farm Animals
- Farm Machinery and Implements
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