Summer crop does not require irrigation in areas receiving good precipitation. On the other hand, good drainage is necessary as this crop is sensitive to water logging. Water should, therefore be not allowed to stand in the field. In areas of low rainfall, 1-2 irrigations may be given, if available. Spring crop can be taken only in irrigated areas in low and mid-hills, whereas there is hardly any need of irrigation at high altitude. Flowering stage is the most critical period for water.