EASY
Earn 100

The term riparian erosion is applied to _____. 

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Important Questions on Soil and Soil Conservation

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Which of the following factors is NOT responsible for the loss of fertility of agricultural land?
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The ratio of 'organic carbon' to 'organic matter' in soils is -
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Which of the following element is not a structural component of plants?
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 Which type of soil is mostly found in India? 
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Which of the following is called ‘quick lime’?
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Salinization occurs when the irrigation water accumulated in the soil evaporates, leaving behind salts and minerals. What are the effects of salinization on the irrigated land?
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Plants which grow in saline soil are _____.
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Match the following --
List-I
A. Azospirillum
B. Azotobacter
C. VAM
D. Azolla
List-II
1. Helps in phosphorus uptake.
2. Floating aquatic fern.
3. Grows on and inside the roots of graminaceous crops.
4. Free-living nitrogen fixing bacterium.
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The soluble salt content of the soil is determined by measuring its:

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What is the pH value of Alkaline soil?
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Which of the following is most fertile soil? 
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The capacity of soil to produce crop yield is called:
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If the topsoil has been eroded, we retire a land and grow over _____. 
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Which of the following is called ‘white alkali soils’?
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The critical stages of irrigation in cotton are-
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Directions: Assertion and reasoning type questions have one assertion and one reason. The question is followed by four options.

Assertion (A): Earthworms are not good for agriculture.

Reason (R): Earthworms break down the soil into fine particles and make it soft.

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Soil Health Card Scheme was launched in which year?
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Which micro-organism is present in large quantities in soil?

A. Bacteria
B. Virus
C. Fungi
D. Protozoa
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The number of essential elements for plant growth is:
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Which one of the given responses would be a meaningful order of the following words?

1. Sowing

2. Tilling

3. Reaping

4. Weeding