Four Decades of Bacillus Biofertilizers: Advances and Future Prospects in Agriculture

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Abstract
Over the past four decades, Bacillus biofertilizers have significantly contributed to sustainable agricultural practices by enhancing crop growth, improving soil health, and reducing chemical dependencies. This research utilizes bibliometric analysis based on 3,242 documents sourced from the Web of Science database to map the development, key contributions, and innovation within the field from 1985 to 2023. The study identifies exponential growth in research output, particularly from 2003 onwards, indicating a robust interest and expanding research base predominantly in China, India, and the United States. We segmented the research timeline into three distinct phases, each marked by varying growth rates and research foci. This paper presents novel insights into the geographical and institutional distributions of research, highlighting the predominant role of developing countries in advancing Bacillus-based technologies. Key research hotspots have evolved from basic applications to complex interactions involving synthetic microbial communities and advanced multi-omics techniques. Our findings demonstrate a trend towards more strategic and technologically integrated approaches to developing Bacillus biofertilizers, reflecting broader shifts towards more sustainable agricultural systems. This study not only charts historical progress but also proposes future research trajectories aimed at enhancing the application and effectiveness of microbial fertilizers across diverse ecosystems.

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