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Application methods for Azospirillum & Phosphate solubilizer

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(i) Seed treatment for direct seeded rice

  • Keep the seeds required for sowing one acre in a heap on a clean cemented floor or gunny bag.
  • Prepare culture suspension by mixing one packet {200g}  each of Azospirillum  and PSB biofertilizer in approx. 800 ml water {1:2}
  • Sprinkle the culture suspension on the heap of the seeds and mix by hand so that thin coating is uniformly applied to the seeds.
  • Spread the seeds under shade for some time for drying and then sow 
  • In place of water, rice glue { Kanji} can also be used for better results
(ii) Seedling root dip method for transplanted rice
  • Prepare the suspension by mixing l kg {5 packets} each culture of Azospirillum and PSB in 15-20 litres of water.
  • Get the rice seedlings required for one acre and make small bundles of seedlings.
  • Dip the seedlings root in the suspension for 8-10 hrs and    transplant immediately.
  • Generally, the ratio of inoculants and water is 1:10 
Alternative method
  • Prepare a bed of size 2 m x 1.5 m 0.15 m in the field 
  • Spread a polythene sheet and fill upto 2 inches water
  • Suspend 2 kg each of Azospirillum and PSB culture required for one hectare & mix
  • Dip roots of rice seedling for 8-10 hrs and transplant
Flow chart of root dipping method

flow chart

File Courtesy: 
R K Avasthe, Subhash Babu and Raghavendra Singh ICAR Research Complex for NEH Region
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