Rice – Irrigation management
Maintain water level at about 1.5 cm during transplanting. Thereafter increase it gradually to about 5 cm until maximum tillering stage.
In areas where water for irrigation is assured and where acidity is high, draining and re flooding every 15 days is recommended.
The date of planting may be adjusted so as to avoid synchronization of the critical stages of maximum tillering or heading with the usual flood period in the tract.
For summer rice, 5 cm irrigation two days after disappearance of ponded water is sufficient instead of 5 cm continuous submergence throughout the crop period.
In many paddy fields, water flows from one field to another through breaches in the bunds. Construction of proper bunds is a pre-request for controlling water loss.
Puddling will alter the soil structure and develop an impermeable layer for water to move down. A thorough puddling is must in good water management.
When a field is not level, water may stagnate in the depressions whereas higher parts may fall dry. So a good leveling should be done before planting
In flood prone areas, aged seedlings of Mahsuri or other varieties recommended for waterlogged conditions may be planted.
Water management can effectively control army worm. The pest is seen in dry fields. Letting in water can effectively control the pest
In fields with case worm attack, drain the water out and get natural control.
To increase tillering drain water out. To reduce further tiller development keep water in the field.
Drain water 13 days before harvest. This will increase the grain weight.