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Which of the following assertions is/are correct with reference to soil treatment due to excessive use of chemical fertilisers?
1. Excessive use of chemical fertilisers makes the soil acidic.
2. If the soil is acidic, organic matter is added to it.
Use the code given below to select the correct answer :
- a)1 Only
- b)2 Only
- c)Both 1 and 2
- d)Neither 1 nor 2
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
Which of the following assertions is/are correct with reference to so...
Excessive use of chemical fertilisers can have detrimental effects on soil health. The given statements are related to the impact of chemical fertilisers on soil and the measures to treat it. Let's analyze each assertion.
1. Excessive use of chemical fertilisers makes the soil acidic:
- Chemical fertilisers contain elements such as nitrogen, phosphorus, and sulfur, which are essential for plant growth. However, when these fertilisers are applied excessively, they can lead to an accumulation of these elements in the soil.
- Nitrogen-based fertilisers, in particular, can contribute to soil acidification. When nitrogen is applied in excess, it can undergo nitrification, a process that converts it into nitrate ions. These nitrate ions can then leach into the soil, increasing its acidity.
- Soil acidity can negatively impact soil microbial activity and nutrient availability, affecting plant growth and overall soil health. Acidic soil can also lead to the leaching of essential nutrients like calcium, magnesium, and potassium, further exacerbating the problem.
2. If the soil is acidic, organic matter is added to it:
- Organic matter, such as compost, manure, or crop residues, can help in reducing soil acidity. Organic matter contains compounds like humic and fulvic acids that have a buffering effect on soil pH, preventing excessive acidification.
- When organic matter is added to acidic soil, it helps in increasing the soil's cation exchange capacity (CEC). This allows the soil to hold onto essential nutrients like calcium, magnesium, and potassium, which may otherwise be leached due to acidity.
- Additionally, organic matter improves soil structure, water-holding capacity, and nutrient retention, creating a more favorable environment for plant growth.
- The addition of organic matter also promotes the growth of beneficial soil microorganisms, which further contribute to nutrient cycling and soil fertility.
In conclusion, both assertions are correct. Excessive use of chemical fertilisers can make the soil acidic, and to treat acidic soil, organic matter is added. Adding organic matter can help neutralize the acidity, improve soil fertility, and create a healthier environment for plant growth. It is important to strike a balance in the use of chemical fertilisers and incorporate sustainable soil management practices to maintain soil health in the long term.
1. Excessive use of chemical fertilisers makes the soil acidic:
- Chemical fertilisers contain elements such as nitrogen, phosphorus, and sulfur, which are essential for plant growth. However, when these fertilisers are applied excessively, they can lead to an accumulation of these elements in the soil.
- Nitrogen-based fertilisers, in particular, can contribute to soil acidification. When nitrogen is applied in excess, it can undergo nitrification, a process that converts it into nitrate ions. These nitrate ions can then leach into the soil, increasing its acidity.
- Soil acidity can negatively impact soil microbial activity and nutrient availability, affecting plant growth and overall soil health. Acidic soil can also lead to the leaching of essential nutrients like calcium, magnesium, and potassium, further exacerbating the problem.
2. If the soil is acidic, organic matter is added to it:
- Organic matter, such as compost, manure, or crop residues, can help in reducing soil acidity. Organic matter contains compounds like humic and fulvic acids that have a buffering effect on soil pH, preventing excessive acidification.
- When organic matter is added to acidic soil, it helps in increasing the soil's cation exchange capacity (CEC). This allows the soil to hold onto essential nutrients like calcium, magnesium, and potassium, which may otherwise be leached due to acidity.
- Additionally, organic matter improves soil structure, water-holding capacity, and nutrient retention, creating a more favorable environment for plant growth.
- The addition of organic matter also promotes the growth of beneficial soil microorganisms, which further contribute to nutrient cycling and soil fertility.
In conclusion, both assertions are correct. Excessive use of chemical fertilisers can make the soil acidic, and to treat acidic soil, organic matter is added. Adding organic matter can help neutralize the acidity, improve soil fertility, and create a healthier environment for plant growth. It is important to strike a balance in the use of chemical fertilisers and incorporate sustainable soil management practices to maintain soil health in the long term.
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Which of the following assertions is/are correct with reference to so...
Excessive use of chemical fertilisers makes the soil acidic. Plants do not grow well when the soil is either too acidic or too basic. When the soil is too acidic, it is treated with bases like quicklime (calcium oxide) or slaked lime (calcium hydroxide). If the soil is basic, organic matter (compost) is added to it. Organic matter releases acids which neutralises the basic nature of the soil.
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Which of the following assertions is/are correct with reference to soil treatment due to excessive use of chemical fertilisers?1. Excessive use of chemical fertilisers makes the soil acidic.2. If the soil is acidic, organic matter is added to it.Use the code given below to select the correct answer :a) 1 Onlyb) 2 Onlyc) Both 1 and 2d) Neither 1 nor 2Correct answer is option 'A'. Can you explain this answer?
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Which of the following assertions is/are correct with reference to soil treatment due to excessive use of chemical fertilisers?1. Excessive use of chemical fertilisers makes the soil acidic.2. If the soil is acidic, organic matter is added to it.Use the code given below to select the correct answer :a) 1 Onlyb) 2 Onlyc) Both 1 and 2d) Neither 1 nor 2Correct answer is option 'A'. Can you explain this answer? for UPSC 2025 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about Which of the following assertions is/are correct with reference to soil treatment due to excessive use of chemical fertilisers?1. Excessive use of chemical fertilisers makes the soil acidic.2. If the soil is acidic, organic matter is added to it.Use the code given below to select the correct answer :a) 1 Onlyb) 2 Onlyc) Both 1 and 2d) Neither 1 nor 2Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for UPSC 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following assertions is/are correct with reference to soil treatment due to excessive use of chemical fertilisers?1. Excessive use of chemical fertilisers makes the soil acidic.2. If the soil is acidic, organic matter is added to it.Use the code given below to select the correct answer :a) 1 Onlyb) 2 Onlyc) Both 1 and 2d) Neither 1 nor 2Correct answer is option 'A'. Can you explain this answer?.
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