Water conservation in agriculture
Question
Which of the following practices can help in water conservation in agriculture?
Select the correct answer using the code given below:
- 1.
Reduced or zero tillage of the land
- 2.
Applying gypsum before irrigating the field
- 3.
Allowing crop residue to remain in the field
Options
1 and 2 only
3 only
1 and 3 only
1, 2 and 3
Explanation
Reduced or zero tillage (Statement 1) conserves water by reducing soil disturbance and evaporation, improving water retention. Leaving crop residue in the field (Statement 3) acts as mulch, reducing evaporation and conserving soil moisture. However, applying gypsum (Statement 2) is primarily used to improve soil structure and reduce alkali salts—it is not a direct water conservation technique. Zero tillage and crop residue retention are recognized water conservation practices in agriculture. > ZT + CR = Water Conservation (Zero Tillage + Crop Residue = WC). Answer: c.
Question details
Year
2017
Paper
GS Paper 1
Question
Q71
Subject
Environment
Sub-topic
Agricultural practices and water management
Type
Statement-based
Difficulty
Medium
Nature
Static
Source hint
NCERT Environment/Agriculture
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