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Terracing and Contour Bunding

Description: Terracing and Contour Bunding Quiz
Number of Questions: 15
Created by:
Tags: soil conservation terracing contour bunding agriculture
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What is the primary purpose of terracing and contour bunding in agriculture?

  1. To prevent soil erosion

  2. To increase soil fertility

  3. To improve drainage

  4. To enhance crop yields


Correct Option: A
Explanation:

Terracing and contour bunding are soil conservation techniques primarily used to prevent soil erosion, especially on sloping lands.

Which of the following is NOT a type of terrace commonly used in agriculture?

  1. Bench terrace

  2. Contour terrace

  3. Broad-base terrace

  4. Strip terrace


Correct Option: D
Explanation:

Strip terraces are not a common type of terrace used in agriculture. The other options, bench terrace, contour terrace, and broad-base terrace, are widely used.

What is the primary function of contour bunds in soil conservation?

  1. To reduce runoff velocity

  2. To trap sediment and prevent erosion

  3. To improve water infiltration

  4. To enhance soil fertility


Correct Option: A
Explanation:

Contour bunds are primarily used to reduce runoff velocity and prevent soil erosion by slowing down the flow of water.

Terracing and contour bunding are particularly important in areas with:

  1. Steep slopes

  2. Sandy soils

  3. Low rainfall

  4. High temperatures


Correct Option: A
Explanation:

Terracing and contour bunding are crucial in areas with steep slopes to prevent soil erosion and conserve soil moisture.

Which of the following is NOT a benefit of terracing and contour bunding?

  1. Reduced soil erosion

  2. Improved water infiltration

  3. Increased crop yields

  4. Enhanced soil fertility


Correct Option: D
Explanation:

Terracing and contour bunding primarily focus on soil conservation and water management. While they can indirectly contribute to improved soil fertility, it is not their primary benefit.

What is the primary factor determining the spacing between terraces?

  1. Slope of the land

  2. Soil type

  3. Rainfall intensity

  4. Crop type


Correct Option: A
Explanation:

The spacing between terraces is primarily determined by the slope of the land. Steeper slopes require closer spacing to effectively control erosion.

What is the recommended slope for contour bunding?

  1. Less than 5%

  2. 5-10%

  3. 10-15%

  4. More than 15%


Correct Option: B
Explanation:

Contour bunding is generally recommended for slopes ranging from 5% to 10%. Steeper slopes may require additional soil conservation measures.

Which of the following is NOT a disadvantage of terracing and contour bunding?

  1. High construction and maintenance costs

  2. Reduced land available for cultivation

  3. Improved water infiltration

  4. Reduced soil erosion


Correct Option: C
Explanation:

Terracing and contour bunding can improve water infiltration and soil moisture retention, which is a benefit, not a disadvantage.

What is the primary purpose of vegetative contour bunds?

  1. To reduce runoff velocity

  2. To trap sediment and prevent erosion

  3. To improve water infiltration

  4. To enhance soil fertility


Correct Option: B
Explanation:

Vegetative contour bunds are primarily used to trap sediment and prevent erosion by slowing down the flow of water and promoting vegetation growth.

Which of the following is NOT a suitable crop for contour farming?

  1. Rice

  2. Wheat

  3. Corn

  4. Potatoes


Correct Option: D
Explanation:

Potatoes are not typically grown using contour farming techniques. Rice, wheat, and corn are commonly cultivated using contour farming methods.

What is the primary factor determining the height of contour bunds?

  1. Slope of the land

  2. Soil type

  3. Rainfall intensity

  4. Crop type


Correct Option: C
Explanation:

The height of contour bunds is primarily determined by the rainfall intensity in the area. Higher rainfall intensity requires taller bunds to effectively control runoff.

Which of the following is NOT a benefit of contour farming?

  1. Reduced soil erosion

  2. Improved water infiltration

  3. Increased crop yields

  4. Enhanced soil fertility


Correct Option: D
Explanation:

Contour farming primarily focuses on soil conservation and water management. While it can indirectly contribute to improved soil fertility, it is not its primary benefit.

What is the recommended spacing between contour bunds?

  1. 2-3 meters

  2. 4-5 meters

  3. 6-7 meters

  4. 8-9 meters


Correct Option: B
Explanation:

The recommended spacing between contour bunds is typically 4-5 meters. This spacing allows for effective control of runoff and soil erosion.

Which of the following is NOT a suitable area for terracing and contour bunding?

  1. Steep slopes

  2. Sandy soils

  3. Low rainfall areas

  4. Areas with high soil erosion risk


Correct Option: B
Explanation:

Sandy soils are not typically suitable for terracing and contour bunding due to their low water-holding capacity and susceptibility to wind erosion.

What is the primary purpose of contour strip cropping?

  1. To reduce runoff velocity

  2. To trap sediment and prevent erosion

  3. To improve water infiltration

  4. To enhance soil fertility


Correct Option: A
Explanation:

Contour strip cropping is primarily used to reduce runoff velocity and prevent soil erosion by alternating strips of different crops along the contour lines.

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