Alternate wetting and Drying (AWD)
Apply irrigation water to the field only after the disappearance of ponded water. Hence, the field is alternately flooded and non-flooded.
Decision for re - irrigation scheduling is based on
(a) Visual methods:-
(i) Fine hair cracks on soil:- Irrigate after appearance of fine hair cracks on soil surface
(ii) Leaf
rolling:- Irrigate when the leaf starts rolling
(b) Water level in Field water tube/Pani pipe :-
When water level drops below 15 cm from soil surface, the field should
be re-irrigated