International Journal For Multidisciplinary Research

E-ISSN: 2582-2160   •   Impact Factor: 9.24

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Volume 8 Issue 2
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“Seed Coating: A Reliable Method for Application of Plant Growth-Promoting Microorganisms”

Author(s) Dr. Saisubhashini S, Ms Sreevidya M
Country India
Abstract Through biological nutrient mobilization, biofertilizers improve soil fertility and crop productivity, making them a crucial part of sustainable agriculture. However, low microbial viability during storage and seed application, as well as a short shelf life, restrict their broad use. An efficient answer is provided by seed film-coating technology that uses appropriate polymeric materials to protect beneficial microbes and guarantee their consistent transport to the rhizosphere. The current study assesses the impact of two film-coating agents, dextrin and hydroxypropyl methylcellulose (HPMC), on the effectiveness and shelf life of biofertilizer applied to okra (Abelmoschus esculentus) seeds. For seed inoculation, biofertilizer strains such Bacillus megaterium, a phosphate-solubilizing bacterium, and Azospirillum spp, were employed. The microbiological viability during storage, seed germination, seedling vigor, plant growth, and yield properties of seeds coated with HPMC- and dextrin-based formulations were evaluated. Standard plate count techniques were used to periodically assess microbial survival. Growth parameters were assessed in both field and controlled environments. The physical characteristics of the seed were not considerably changed by film coating. After three months of low-temperature storage, shelf-life experiments showed just a one-log decrease in the microbial population. Without compromising germination, biofertilizer-coated seeds demonstrated enhanced seedling growth, especially increased plant height. This demonstrates that polymer-based seed coating using HPMC and dextrin is an effective and sustainable approach for maintaining biofertilizer viability and ensuring efficient rhizosphere colonization in okra cultivation.
Keywords Biofertilizer, Seed film coating, HPMC, Dextrin, Shelf life, Okra (Abelmoschus esculentus), Microbial viability, Sustainable agriculture
Published In Volume 8, Issue 2, March-April 2026
Published On 2026-03-27
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E-ISSN 2582-2160
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