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Agroclimatic requirement of Paddy

Climatic requirement

  • Rice is heat and water loving plant, requiring high temperature and adequate moisture supply.
  • For germination a minimum of 10oC and for flowering a temperature of 22-25oC is considered as an optimum. Grain formation takes place at 20-21oC.
  • Low temperature particularly during 10-11 days before heading causes considerable loss in grain yield because of sterile spikelets.
  • At ripening temperature should be in between 20-25oC.
  • Rice is a short day, thermosensitive plant but now many thermoinsensitive varieties have been developed.
  • It is mostly grown in areas receiving 1000-1500 mm rain.
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