Chemical and biological properties of wheat soil in response to paddy straw incorporation and its biodegradation by fungal inoculants |
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Authors: | Sunita Gaind Lata Nain |
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Institution: | (1) Division of Microbiology, Indian Agricultural Research Institute, New Delhi, 110012, India |
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Abstract: | A field experiment was conducted to evaluate the relative contribution of organic fertilizers (paddy straw, microbial inoculants
and vermicompost) and inorganic fertilizers (urea and superphosphate) in improving pH, C, N, humus, microbial biomass, dehydrogenase,
phosphatase, cellulase, β-glucosidase and xylanase activities of soil under wheat crop. Vermicompost fertilization resulted
in highest microbial biomass, available phosphorus, and nitrogen content of wheat soil. It was also found effective in minimizing
the alkalinity of soil compared to other treatments as indicated by pH change. However incorporation of paddy straw in conjunction
with N60P60 and T. reesei inoculation resulted in maximum dehydrogenase, alkaline phosphatase and highest humus content of soil. Mixed inoculation
of A. awamori and T. reesei did not prove effective in improving the soil biochemical properties in comparison to single inoculation of T. reesei. Results showed that in situ incorporation of paddy straw in combination with N60P60 and T. reesei inoculation can be used as an effective measure for valuable disposal of paddy straw and to improve the soil health by reducing
mineral fertilization. |
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Keywords: | Aspergillus awamori Enzymes Paddy straw Trichoderma reesei Wheat Vermicompost |
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