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With reference to agricultural soils, consider the following statements:
1. A high content of organic matter in soil drastically reduces its water holding capacity.
2. Soil does not play any role in the Sulphur cycle.
3. Irrigation over a period of time can contribute to the salinization of some agricultural lands.
1. A high content of organic matter in soil drastically reduces its water holding capacity.
2. Soil does not play any role in the Sulphur cycle.
3. Irrigation over a period of time can contribute to the salinization of some agricultural lands.
Which of the statements given above is/are correct?
[2018]
- a)1 and 2 only
- b)3 only
- c)1 and 3 only
- d)1, 2 and 3
Correct answer is option 'B'. Can you explain this answer?
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Most Upvoted Answer
With reference to agricultural soils, consider the following statement...
Water holding capacity and organic matter:
- A high content of organic matter in soil actually increases its water holding capacity.
- Organic matter acts like a sponge, absorbing and holding onto water for plants to use.
- Therefore, the statement that high organic matter reduces water holding capacity is incorrect.
Soil and the Sulphur cycle:
- Soil plays a crucial role in the Sulphur cycle.
- Sulfur is an essential nutrient for plants, and it cycles through the soil as plants absorb it from the soil, animals eat the plants, and decomposers break down organic matter.
- Therefore, the statement that soil does not play any role in the Sulphur cycle is incorrect.
Salinization and irrigation:
- Irrigation over a period of time can indeed contribute to the salinization of agricultural lands.
- When water evaporates from the soil surface, it leaves behind salts that were dissolved in the water.
- Over time, these salts can accumulate in the soil, leading to salinization which can harm plant growth.
- Therefore, the statement that irrigation can contribute to the salinization of agricultural lands is correct.
In conclusion, statement 3 is correct, while statements 1 and 2 are incorrect.
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Community Answer
With reference to agricultural soils, consider the following statement...
The process of decay, added by bacterial action, transforms organic matter into humus. Humus enhances water retention capacity of the soil. So, 1 is wrong. By elimination we are left with Answer (b): 3 only.
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With reference to agricultural soils, consider the following statements:1. A high content of organic matter in soil drastically reduces its water holding capacity.2. Soil does not play any role in the Sulphur cycle.3. Irrigation over a period of time can contribute to the salinization of some agricultural lands.Which of the statements given above is/are correct?[2018]a)1 and 2 onlyb)3 onlyc)1 and 3 onlyd)1, 2 and 3Correct answer is option 'B'. Can you explain this answer?
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With reference to agricultural soils, consider the following statements:1. A high content of organic matter in soil drastically reduces its water holding capacity.2. Soil does not play any role in the Sulphur cycle.3. Irrigation over a period of time can contribute to the salinization of some agricultural lands.Which of the statements given above is/are correct?[2018]a)1 and 2 onlyb)3 onlyc)1 and 3 onlyd)1, 2 and 3Correct answer is option 'B'. Can you explain this answer? for UPSC 2024 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about With reference to agricultural soils, consider the following statements:1. A high content of organic matter in soil drastically reduces its water holding capacity.2. Soil does not play any role in the Sulphur cycle.3. Irrigation over a period of time can contribute to the salinization of some agricultural lands.Which of the statements given above is/are correct?[2018]a)1 and 2 onlyb)3 onlyc)1 and 3 onlyd)1, 2 and 3Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for UPSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for With reference to agricultural soils, consider the following statements:1. A high content of organic matter in soil drastically reduces its water holding capacity.2. Soil does not play any role in the Sulphur cycle.3. Irrigation over a period of time can contribute to the salinization of some agricultural lands.Which of the statements given above is/are correct?[2018]a)1 and 2 onlyb)3 onlyc)1 and 3 onlyd)1, 2 and 3Correct answer is option 'B'. Can you explain this answer?.
With reference to agricultural soils, consider the following statements:1. A high content of organic matter in soil drastically reduces its water holding capacity.2. Soil does not play any role in the Sulphur cycle.3. Irrigation over a period of time can contribute to the salinization of some agricultural lands.Which of the statements given above is/are correct?[2018]a)1 and 2 onlyb)3 onlyc)1 and 3 onlyd)1, 2 and 3Correct answer is option 'B'. Can you explain this answer? for UPSC 2024 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about With reference to agricultural soils, consider the following statements:1. A high content of organic matter in soil drastically reduces its water holding capacity.2. Soil does not play any role in the Sulphur cycle.3. Irrigation over a period of time can contribute to the salinization of some agricultural lands.Which of the statements given above is/are correct?[2018]a)1 and 2 onlyb)3 onlyc)1 and 3 onlyd)1, 2 and 3Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for UPSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for With reference to agricultural soils, consider the following statements:1. A high content of organic matter in soil drastically reduces its water holding capacity.2. Soil does not play any role in the Sulphur cycle.3. Irrigation over a period of time can contribute to the salinization of some agricultural lands.Which of the statements given above is/are correct?[2018]a)1 and 2 onlyb)3 onlyc)1 and 3 onlyd)1, 2 and 3Correct answer is option 'B'. Can you explain this answer?.
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