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 :
(a) 1 and 2 only
(b) 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
The FAO manual confirms
- Crop residues or other organic matter left in or added to the field improve water penetration and moisture retention. So #3 is correct
- Gypsum application can solve the water percolation process. 2 is correct
- Hence we are left with answer “D”.
- Counter argument: same FAO manual also says that tillage helps in better water penetration by increasing the surface area and porosity of the soil. So statement#1 is wrong? But then there is no option saying “only 2 and 3”, besides this Hindu article says zero tillage faming helps in moisture conservation. So 1, 2 and 3 are correct.
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