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BLUE GREEN ALGAE AS A COMPONENT OF INM

BLUE GREEN ALGAE AS A COMPONENT OF INM. BLUE GREEN ALGAE AS COMPONENT OF INM. INTRODUCTION. Cyanobacteria (BGA) can be found in almost every conceivable environment.

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BLUE GREEN ALGAE AS A COMPONENT OF INM

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  1. BLUE GREEN ALGAE AS A COMPONENT OF INM

  2. BLUE GREEN ALGAE AS COMPONENT OF INM INTRODUCTION Cyanobacteria (BGA) can be found in almost every conceivable environment. Blue green algae are photosynthetic Cyanobacteria and promote the growth of lowland paddy by supplying fixed nitrogen through exudation. BGA application @ 10 kg/ha one week after rice transplantation contribute 25 - 30 kg N /ha /season with a yield enhancement of 10-15 percent. Besides fixing nitrogen, these algae excrete vitamins and hormones, which may also contribute to the growth of rice plants.

  3. BLUE GREEN ALGAE AS COMPONENT OF INM Blue green algae found in almost every environment, from oceans to fresh water to bare rock to soil. They occur as plantonic cells or form phototrophic biofilm in marine environments, in damp soil, moistened rocks ,deserts

  4. BLUE GREEN ALGAE AS COMPONENT OF INM Blue green algae are photosynthetic . Cyanobacteria ,promote the growth of lowland paddy by supplying nitrogen. BGA strains used for biofertilizer are Anabaena variabilis,Nostoc muscorum, Aulosira fertilissima and Tolypothrix tenuis. BGA application @ 10 kg/ha one week after rice transplantation contribute 25 - 30 kg N /ha /season with a yield increase of 10-15 percent. Blue green algae excrete vitamins and hormones, which  enhance rice growth. BGA also enhances soil fertility

  5. BLUE GREEN ALGAE AS COMPONENT OF INM CHARACTERISTICS OF BLUE GREEN ALGAE Cyanobacteria include unicellular and colonial form. Colonies form filaments, sheets , hollow balls. Filaments differentiate into vegetative cells, heterocysts and resistant spores. Heterocyst is the site of nitrogen fixation . Heterocyst fix nitrogen into ammonia and nitrate Nitrate and ammonia are absorbed by plants.

  6. BLUE GREEN ALGAE AS COMPONENT OF INM Blue Green Algal Species

  7. Treatment Grain yield (q/ha) 2000 2001 2002 Control 34.27 39.64 45.61 40 kg N/ha 46.50 42.58 50.73 80 kg N/ha 50.67 45.84 53.80 120 kg N/ha 53.10 47.84 55.30 BGA 43.70 40.17 48.60 BGA + 40 kg N/ha 51.57 48.04 52.70 BGA + 80 kg N/ha 54.70 51.06 55.80 BGA + 120 kg N/ha - 51.42 56.70 BLUE GREEN ALGAE AS COMPONENT OF INM ALGALIZATION EFFECT ON PADDY BGA SUPPLEMENT NITROGEN IN ACHIEVING YIELD EQUIVALENT TO MINERAL NITROGEN ALONE

  8. BLUE GREEN ALGAE AS COMPONENT OF INM BLUE GREEN ALGAE Fix atmospheric nitrogen Contribute 25- 30 kg N /ha /season BLUE GREEN ALGAE Increase rice yield by 10-15 % Secrete Vitamins & hormones

  9. BLUE GREEN ALGAE AS COMPONENT OF INM MASS PRODUCTION OF BGA CULTURE Shallow trays (2m x 1m) of galvanized sheet Spread 8-10 kg soil plus 200 g SSP Add water (5-15cm) Sprinkle algal culture Expose to sunlight

  10. BLUE GREEN ALGAE AS COMPONENT OF INM MASS PRODUCTION OF BGA CULTURE Thick algal mat forms at 15 days Allow water to evaporate Collect dry algal flakes Make into powder and pack in polybags

  11. BLUE GREEN ALGAE AS COMPONENT OF INM LET US SUM UP Blue green algae are photosynthetic . They form phototrophic biofilm in fresh water and marine environments, in damp soil. Promote the growth of lowland paddy by supplying fixed nitrogen through exudation. Blue green algae also excrete vitamins and hormones, which may also contribute to the growth of rice plants. contd…

  12. BLUE GREEN ALGAE AS COMPONENT OF INM LET US SUM UP BGA application @ 10 kg/ha one week after rice transplantation contribute 25 - 30 kg N /ha /season with a yield enhancement of 10-15 percent. Indian rice fields also harvours different BGA species – Anabaena, Nosto, Cylindrospermum, Westolliopsis, etc.

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