Estimation of nitrogen transforming microorganisms in soils of different tea valleys of Bangladesh

Authors

  • MA Gafur Department of Botany, University of Chittagong, Chittagong-4331
  • Afroza Sultana Department of Botany, University of Chittagong, Chittagong-4331

DOI:

https://doi.org/10.3329/bjb.v42i1.15907

Keywords:

Microorganisms, Soils, Tea valleys, Bangladesh

Abstract

Physico-chemical properties of soils and quantitative estimation and distribution of population of Azotobacter, ammonifying, nitrifying and denitrifying bacteria in soils under tea plants of tea valleys of Bangladesh were studied. Soil texture ranged from loam to clay loam, pH ranged from 4.84 - 5.65 and organic carbon varied between 0.18 and 2.12%. Population of Azotobacter, ammonifying bacteria, Nitrosomonas, Nitrobacter and denitrifying bacteria ranged from 18.0 × 109/g - 88.4 × 109cfu/g soil, 0.20 × 109/g - 0.24 × 109/g soil, 0.20 × 109/g - 0.24 × 109/g soil, 0.20 × 109/g - 0.24 × 109/g soil and 0.17 × 109/g - 0.24 × 109/g soil, respectively. The populations of microorganisms were not related with soil pH and organic carbon. Ammonifying bacteria was positively and significantly correlated with Nitrosomonas and Nitrobacter and Nitrosomonas with Nitrobacter at 0.01% level.

DOI: http://dx.doi.org/10.3329/bjb.v42i1.15907

Bangladesh J. Bot. 42(1): 161-165, 2013 (June)

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Published

2013-07-28

How to Cite

Gafur, M., & Sultana, A. (2013). Estimation of nitrogen transforming microorganisms in soils of different tea valleys of Bangladesh. Bangladesh Journal of Botany, 42(1), 161–166. https://doi.org/10.3329/bjb.v42i1.15907

Issue

Vol. 42 No. 1 (2013)

Section

Articles

License

© Bangladesh Botanical Society

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