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<p>Cotton productivity in India has declined in recent years despite extensive cultivation, largely due to abiotic stresses, inefficient nutrient management, and progressive deterioration of soil health under intensive farming systems. Excessive reliance on inorganic fertilizers has raised sustainability concerns, highlighting the need for alternative approaches that improve crop performance while maintaining soil quality. Plant growth-promoting rhizobacteria (PGPR) offer a promising biological strategy to enhance nutrient availability, plant growth, and rhizosphere microbial activity. The present study evaluated the performance of bioencapsulated cotton seeds inoculated with <i>Bacillus thaonhiensis</i> PAU_43RN and <i>Pseudomonas brassicacearum</i> PAU_34RN under field conditions. Field experiments were conducted on cotton hybrid RCH 776 at two agro-climatic locations of Punjab, Ludhiana and Bathinda, using 100% and 75% recommended doses of fertilizers (RDF). Growth, yield, fibre quality, and soil chemical and biological properties were assessed. Bioencapsulation with dual PGPR inoculation combined with 100% RDF enhanced plant growth, yield attributes, seed cotton yield, lint yield, and root biomass compared to non-encapsulated seeds. Notably, bioencapsulated seeds under 75% RDF produced growth and yield responses comparable to non-encapsulated seeds at 100% RDF, indicating potential fertilizer savings. Fibre quality traits remained unaffected, while soil pH, electrical conductivity, and organic carbon were stable across treatments. Bioencapsulated seed treatments showed numerical improvements in available nutrients and rhizosphere microbial populations. Therefore, integrating bioencapsulated PGPR-treated seeds with fertilizer management improved cotton productivity and soil biological activity, offering a sustainable approach for cotton cultivation under Punjab conditions.</p>

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Development and evaluation of bioencapsulated cotton seeds with plant growth-promoting bacteria under agro-climatic conditions of Punjab

  • 期刊论文

  • 发表日期：

    2026年5月18日

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  • K. V. S. Jahnavi,
  • Gulab Pandove,
  • Sukhdeep Kaur Brar,
  • Amandeep Singh Sidhu,
  • Vidhi Arora,
  • Neeraj Rani,
  • Sohan Singh Walia

摘要

Cotton productivity in India has declined in recent years despite extensive cultivation, largely due to abiotic stresses, inefficient nutrient management, and progressive deterioration of soil health under intensive farming systems. Excessive reliance on inorganic fertilizers has raised sustainability concerns, highlighting the need for alternative approaches that improve crop performance while maintaining soil quality. Plant growth-promoting rhizobacteria (PGPR) offer a promising biological strategy to enhance nutrient availability, plant growth, and rhizosphere microbial activity. The present study evaluated the performance of bioencapsulated cotton seeds inoculated with Bacillus thaonhiensis PAU_43RN and Pseudomonas brassicacearum PAU_34RN under field conditions. Field experiments were conducted on cotton hybrid RCH 776 at two agro-climatic locations of Punjab, Ludhiana and Bathinda, using 100% and 75% recommended doses of fertilizers (RDF). Growth, yield, fibre quality, and soil chemical and biological properties were assessed. Bioencapsulation with dual PGPR inoculation combined with 100% RDF enhanced plant growth, yield attributes, seed cotton yield, lint yield, and root biomass compared to non-encapsulated seeds. Notably, bioencapsulated seeds under 75% RDF produced growth and yield responses comparable to non-encapsulated seeds at 100% RDF, indicating potential fertilizer savings. Fibre quality traits remained unaffected, while soil pH, electrical conductivity, and organic carbon were stable across treatments. Bioencapsulated seed treatments showed numerical improvements in available nutrients and rhizosphere microbial populations. Therefore, integrating bioencapsulated PGPR-treated seeds with fertilizer management improved cotton productivity and soil biological activity, offering a sustainable approach for cotton cultivation under Punjab conditions.