volume 29 issue 2 (june 2009) :
COMBINED EFFECTS OF DIAZOTROPHS AND PHOSPHOBACTERIA ON NITROGEN, PHOSPHORUS AND MICROBIAL STATUS OF SOIL
1College of Agriculture,
Pune-411 005, India
Published In
Agricultural Science Digest
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volume 29 issue 2 (june 2009) :
COMBINED EFFECTS OF DIAZOTROPHS AND PHOSPHOBACTERIA ON NITROGEN, PHOSPHORUS AND MICROBIAL STATUS OF SOIL
1College of Agriculture,
Pune-411 005, India
ABSTRACT
The results of present investigations in general revealed that composite culture of diazotrophic
becteria viz. Acetobacter, Azotobacter, Azospirillum and phosphate solubilizing bacteria Bacillus
megaterium was significantly superior and synergistic leading to improved available nitrogen,
phosphorus and bacterial population in soil at various stages of pearl millet crop as compared to
single culture inoculation. The maximum population of all bacteria was recorded in composite
culture of three diazotrophic and one phosphobacteria in soil at flowering stage and decreased at
maturity stage whereas, found minimum in uninoculated control. The available nitrogen and
phosphorus in soil were also increased due to inoculation of various bioinoculats and found
maximum in the treatment of combination of four bacterial composite cultures.
becteria viz. Acetobacter, Azotobacter, Azospirillum and phosphate solubilizing bacteria Bacillus
megaterium was significantly superior and synergistic leading to improved available nitrogen,
phosphorus and bacterial population in soil at various stages of pearl millet crop as compared to
single culture inoculation. The maximum population of all bacteria was recorded in composite
culture of three diazotrophic and one phosphobacteria in soil at flowering stage and decreased at
maturity stage whereas, found minimum in uninoculated control. The available nitrogen and
phosphorus in soil were also increased due to inoculation of various bioinoculats and found
maximum in the treatment of combination of four bacterial composite cultures.
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- Isopi, R. et al. (1995). Symbiosis (Philadelphia, Pa) (USA). 18(1):43-55.
- Konde, B.K., and Desale A.G. (1981).14th Ann. conven. Indian Soc. Agric. Chemist. G.A.V. Junagad.Nov.26-27:41.
- Ocampto (1994). Indian J. Microbiol. 34(2):92-94.
- Prajapati, D.R. et al. Guj. Agric. Univ. Res. J. 22(2):101-103.
- Singh, H.P. (1994). Indian J. Microbiol. 34(1):27-31.
- Subba Rao, N.S. (1977). Soil Microorganisms and Plant Growth. Oxford and IBH Publ. Co., New Delhi.
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In this Article
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Published In
Agricultural Science Digest