Question: What Is Contour Farming?

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What do you mean by contour farming?

Contour farming, the practice of tilling sloped land along lines of consistent elevation in order to conserve rainwater and to reduce soil losses from surface erosion.

How does contour farming prevent soil erosion?

Contouring means farming with row patterns nearly level around a hill – not up and down hill. The rows form hundreds of small dams that slow water flow and increase infiltration to reduce erosion.

What are the uses of contour farming?

Contour ridges are used mainly in semi-arid areas to harvest water, and in higher rainfall areas for growing potatoes. Trashlines made by laying crop residues or “trash” in lines along the contour. They slow down runoff and trap eroded soil, eventually forming terraces.

When was contour farming used?

Contour Plowing & Terraces during the 1930s Depression. The Soil Erosion Service was one of the federal programs started in the 1930s to save the land that had been destroyed by years of wind erosion, over plowing, and over grazing.

What are the method of contouring?

There are two methods of locating contours:

  • Direct method.
  • Indirect method.
  • Direct method – In direct method contour to be plotted is actually traced on the ground.
  • Procedure- The work is started from BM and the level is set up at the centre of the area.
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What are the disadvantages of contour farming?

Therefore, contour farming alone is not sufficient to control erosion on steep, long slopes, erodible soils, and during erosive rains. The major drawbacks of contour farming are frequent turning involving extra labor and machinery time, and loss of some area that may have to be put out of production.

How do you do contour farming?

The following are the 10 steps of SALT.

  1. Step 1: MAKE AN A-FRAME.
  2. Step 2: LOCATE THE CONTOUR LINES.
  3. Step 3: PREPARE THE CONTOUR LINES.
  4. Step 4: PLANT SEEDS OF NITROGEN FIXING TREES.
  5. Step 5: CULTIVATE ALTERNATE STRIPS.
  6. Step 6: PLANT PERMANENT CROPS.
  7. Step 7: PLANT SHORT AND MEDIUM-TERM CROPS.

What is the advantages of Contour System?

Answer: The practice has been proved to reduce fertilizer loss, power and time consumption, and wear on machines, as well as to increase crop yields and reduce erosion. Contour farming can help absorb the impact of heavy rains, which in straight-line planting often wash away topsoil.

What is the difference between terrace farming and contour farming?

Terrace farming and contour ploughing are both used to reduce soil erosion on slopes from tilled fields. Write is the difference between terrace farming and contour ploughing.

Terrace farming Contour ploughing
Terrace farming shifts the slope’s structure to create flat areas that provide water catchment. Contour ploughing suits the slope’s natural shape without changing it.

How is contour farming sustainable?

Contour farming captures twice the soil moisture and reduces soil erosion up to eight-fold. Above the “T” value means we are losing more soil than we are making which is not sustainable. We can calculate the annual average soil erosion rate by using a formula agronomists call the Revised Universal Soil Loss Equation.

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Where is contour Ploughing done?

Contour ploughing is a soil conservation technology that is practiced throughout Grenada to mitigate the negative consequences of natural disasters on soil quality and composition. It is performed by following the natural contours when tilling the soil, planting and cultivating.

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