Which of the following practices can help in water conservation in agriculture? 1. Reduced or zero tillage of the land 2. Applying gypsum before irrigating the field 3. Allowing crop residue to remain in the field Select the correct answer using the code given below:
A1 and 2 only
B3 only
C1 and 3 only
D1, 2 and 3
Answer & Solution
Correct answer: C. 1 and 3 only
UPSC CSE Prelims 2017 (GS-I, Set C), Q.71. Official answer key: C.
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