Quality Rice Seed

Quality Rice Seed

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Production of Rice Seed in Irrigated Environments btn_backbtn_forward
Water management in rice seed production
Be able to effectively control water for rice seed production.
Since rice plant is semi-aquatic in nature, water management is critical for quality seed production. Too little water from panicle initiation to the early grain filling stage, water stress results in a decline of the seed quality from under-weight grains. On the contrary, too much water after transplanting reduces the tillering ability resulting in less production. Too much water during grain filling also reduces the seed quality.

Water management has a large effect on soil nutrients and inputs added to the field. For this reason, frequent small irrigations are preferable to a single excessive one. The depth of each irrigation should be 5-7 cm.

Irrigation
in dry season
  • Dry season rice is entirely irrigated. Irrigation water should be applied at 2-3 cm depth 3 days after transplanting (that also controls weed emergence).
  • At tillering stage, alternate wetting and drying techniques can be applied to save water. Click here for more information on alternate wetting and drying techniques.
  • But continuous irrigation should be ensured throughout the panicle initiation to early grain filling stage.
Removal
of water
  • Drain out water before N top-dressing and irrigate after weeding for efficient use of fertilizer.
  • Water should be withdrawn 7 days before harvest (at hard dough stage) for better grain filling and keeping less moisture content in the harvest.
  • Aisle making is useful for irrigated rice culture. It helps keep water in the field.
Next lesson The most important activity of roguing during rice seed production is the subject of the next lesson. btn_backbtn_forward
Last Updated on Wednesday, 09 March 2016 13:00  

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