Kor watering
The first watering is done when the crop has grown to about three centimeters. This watering is known as Kor watering.
Kor Period
The period during which kor watering is done is known as kor Period.
Kor depth
The depth of water applied for the kor watering is called Kor depth.
But why S.K. Garg say the core watering of rice is 19cm