Enrichment of vermicomposts prepared from cow dung spiked solid textile mill sludge using nitrogen fixing and phosphate solubilizing bacteria |
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Authors: | Priya Kaushik Y K Yadav Neeraj Dilbaghi Vinod K Garg |
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Institution: | (1) Department of Environmental Science and Engineering, Guru Jambheshwar University of Science and Technology, Hisar, Haryana, 125001, India |
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Abstract: | Textile mill waste can be vermicomposted if it is mixed in the range of 20–30% with cow dung. This article reports the effect
of inoculation, of nitrogen fixing Azotobacter chroococcum strain; Azospirillum brasilense strain and phosphate solubilizing Pseudomonas maltophila, on nitrogen and phosphorus content of vermicomposts prepared from cow dung (CD) and cow dung spiked textile mill sludge
(CD + STMS). The CD vermicompost was more supportive to the growth and multiplication of all the three bacteria than CD + STMS
vermicompost. In Azotobacter chroococcum treated vermicomposts maximum nitrogen content was recorded between 45 and 60 days CD␣vermicompost (25.9 ± 0.45 g kg−1) and CD + STMS vermicompost (20.6 ± 0.62 g kg−1)] followed by Azospirillum brasilense inoculation CD vermicompost (19.4 ± 0.60 g kg−1) and CD + STMS vermicompost (18.6 ± 0.17 g kg−1)]. Phosphorus content in Pseudomonas maltophila inoculated CD vermicompost was 20.8 ± 0.20 g kg−1 and CD + STMS vermicompost was 13.4 ± 0.45 g kg−1 after 75th day of inoculation. |
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Keywords: | Cow dung Solid textile mill sludge Vermicompost Nitrogen Phosphorus Enrichment Bacteria |
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