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Difficulty: EasyMethods and Techniques of Environmental Conservation

Which soil conservation technique involves plowing and planting along the natural contour lines of a slope to slow surface runoff and reduce soil erosion?

  1. Contour plowingAnswer
  2. B
    Down-slope vertical tilling
  3. C
    Continuous application of crude oil derivatives to renew minerals
  4. D
    Enforcing soil management exclusively through NOSDRA

Answer

Contour plowing is the conservation technique that follows the natural elevation lines of sloping terrain to slow surface runoff and control soil erosion.
Contour plowing follows the horizontal curves of elevation on sloping land. By plowing perpendicular to the flow of water, each ridge acts as a mini-barrier that traps rainwater, increases infiltration, and prevents soil erosion.

Step-by-Step Solution

1
Identify the primary cause of soil erosion on sloping land.
Water flowing quickly down slopes creates rills and gullies, removing fertile topsoil.
Topography accelerates gravitational water flow.
2
Evaluate conservation techniques designed to impede downhill water movement.
Plowing across the slope perpendicular to the downhill direction (along contour lines) acts as small furrows or dams that capture rainwater.
This technique directly mitigates surface runoff speed and soil loss.

Key Concept

Methods and Techniques of Environmental Conservation: Soil Conservation Practices
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Topics

Methods and Techniques of Environmental Conservation

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