DEVELOPMENT AND EVALUATION OF COMPOST BASED PGPR CONSORTIUM IN GELATIN CAPSULES
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Date
2019-08-19
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UNIVERSITY OF AGRICULTURAL SCIENCES, GKVK, BENGALURU
Abstract
An investigation was conducted to determine the effect of inoculation of microbial consortium by using capsule-based formulation and its comparison with vermicompost and talc powder. Survival study was conducted in laboratory conditions from the results it is evident that survival of the Azotobacter chroococcum and Bacillus megaterium both in single and dual inoculants of vermicompost and capsule-based formulations were declined gradually at the end of 180 days of storage. Effectiveness of A. chroococcum and B. megaterium as single and dual inoculants of talc and capsule-based formulations was tested in finger millet (Eleusine coracana L. Gaertn.) crop, In this study highest plant height and number of leaves were recorded from the plants receiving nutrients with single inoculant of capsule-based formulation containing A. chroococcum. Highest chlorophyll content was recorded in the plants receiving dual inoculant of capsule-based formulation with NPK. Maximum root length, shoot and root nitrogen, shoot and root phosphorus were recorded from the plants receiving nutrients with dual inoculants of capsule-based formulation. Highest shoot and root fresh weight, shoot and root dry weight and total biomass were recorded from the plants receiving nutrients with dual inoculants of talc-based formulation. From the results it is observed that capsule based inoculum showed stimulating effect on the plant growth. It is clearly evident from this investigation that gelatin capsules are the best alternate formulations to carrier-based inoculants and also from results found that consortial application of microbial inoculants was found more advantageous than in individual inoculation in terms of enhancing crop growth parameters.