Development of biofertilizers for sustainable agriculture over four decades (1980–2022)

Abstract

The application of biofertilizers is becoming an inevitable trend to substitute chemical fertilizers for sustainable agriculture. To better understand the development of biofertilizers from 1980 to 2022, we used bibliometric mining to analyze 12,880 journal articles related to biofertilizer. The network cooccurrence analysis suggested that the biofertilizers research can be separated into three stages. The first stage (1980–2005) focused on nitrogen fixation. The second stage (2006–2015) concentrated on the mechanisms for increasing plant yield. The third stage (2016–2022) was the application of biofertilizers to improve the soil environment. The keyword analysis revealed the mechanisms of biofertilizers to improve plant-growth: biofertilizers can impact the nutritional status of plants, regulate plant hormones, and improve soil environments and the microbiome. The bacteria use as biofertilizers, included Pseudomonas, Azospirillum, and Bacillus, were also identified through bibliometric mining. These findings provide critical discernment to aid further study of biofertilizers for sustainable agriculture.

Keywords

Biofertilizer / Plant-growth-promoting bacteria / Plant-growth promoting rhizobacteria / Bibliometric / Research hotspots

Declaration of Competing Interests

The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Ziliang Dong reports a relationship with Chongqing Taiji Group Co., Ltd. that includes: employment.

Acknowledgements

This study was funded by the Key R&D Projects in Zhejiang Province (Grant No. 2020C02001), Sannong Jiufang S&T Project in Zhejiang Province (Grant No. 2022SNJF024), Key innovation Project of Qilu University of Technology (Shandong Academy of Sciences) (Grant No. 2022JBZ01-06), Natural Science Foundation of Shandong Province (Grant No. ZR2021KE038), Shandong Province Agricultural Major Application Technology Innovation Project (Grant No. 20182130106), and Foundation of Qilu University of Technology of Cultivating Subject for Biology and Biochemistry (Grant No. 202119).

Supplementary materials

Supplementary material associated with this article can be found, in the online version, at doi:10.1016/j.geosus.2023.09.006.

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