Favorable optimum temperature for various growth stages of rice

• Germination: 21-31 deg-C
• Transplantation: 15 deg-C
• Growth in Height: 25 deg-C
• Tillering: 32-34 deg-C (Flower initiation)
• Day Temperature: 25-30 deg-C
• Night Temperature: 20-25 deg-C
• Anthesis: 30 deg-C
• Ripening: 23 deg-C
• Fertility: 14-38 deg-C

Critical stages

The following stages are critical and hence the crop should be saved from stress (moisture, nutrition, heat, weeds sunlight etc)

• Emergence
• Tillering
• Panicle Initiation (PI)
• Booting
• Heading
• Ripening.

Tips

• Use certified seeds
• Select varieties recommended for your zone.
• For high breeds fresh seeds should be purchased every year.
• Raise healthy nursery by using recommended doses of fertiliser and controlling pests.
• Add well decomposed farm yard mannure or green mannure and incorporate by puddling.
• Apply basally recommended fertilisers before the last puddle and incorporate.
• Ensure proper levelling of the field.
• Transplant 25 days seedlings.
• Plant at shallow depths of 3-4 cm.
• For delayed planting use 5-6 seedligs/hill.
• Proper water management facilitates good tillering.
• Maintain 2-5 cm water through out the growing seasson.
• Drain out water before topdressing with nitrogen fertiliser.
• Depending on the soil type, drain out water after 50 % Floweing.
• The above ensures fast ripening of grains.
• In pest endemic areas, cultivate resistant/tolerant varities.
• Specially for Gallmildge, Brown plaanthopper. or stem borer.
• Use only the recommended does of fungicide or insecticide.
• Do not apply granules after booting stage.
• At flowering stage, dust or spray only afternoon or evening.
• For brown plant hopper and white backed plant hopper, direct spray or dust towards the basal portion.