ORIGINAL RESEARCH article
Front. Microbiol.
Sec. Microbe and Virus Interactions with Plants
Volume 16 - 2025 | doi: 10.3389/fmicb.2025.1651178
This article is part of the Research TopicMicrobial Nano-Biofertilizers: A solution for making agriculture sustainableView all articles
Organic Fertilizer Application Rates Affect Rhizosphere Microbial Communities and Yield Optimization in Potato (Solanum tuberosum L. V7)
Provisionally accepted
- 1Inner Mongolia Agricultural University, Hohhot, China
- 2Agricultural and Animal Husbandry Technology Extension Center, Chifen, China
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Background: Organic fertilizers enhance sustainable agriculture by providing nutrients and supporting microbial communities. However, optimal application rates that maximize potato yield while maintaining rhizosphere microbial diversity remain poorly understood. Methods: Four organic fertilizer levels (0, 40%, 60%, and 80% nitrogen replacement) were tested on potato rhizosphere bacterial and fungal communities across three growth stages using high-throughput 16S rDNA and ITS sequencing. Results: Bacterial richness increased progressively with organic fertilizer rates (80% > 60% > 40% > 0), with principal coordinate analysis revealing distinct community separations and largest differentiation during tuber expansion under 80% treatment. Bacterial and fungal communities were dominated by Proteobacteria, Acidobacteriota, and Gemmatimonadota, and Ascomycota, Mortierellomycota, and Basidiomycota, respectively. T60 maintained optimal balance of beneficial rhizospheric microorganisms and delivers superior yield outcomes compared with other fertilization regime. Potato yield responded quadratically to organic fertilizer application, with optimal yield of 81,020 kg/ha at 51.25% organic fertilizer rate, while bacterial and fungal diversity correlated with yield. Conclusions: Moderate organic fertilization (50-60% nitrogen replacement) optimizes both rhizosphere microbial diversity and potato productivity through enhanced nutrient cycling efficiency, providing a sustainable approach for potato production systems.
Keywords: organic fertilizer, Rhizosphere microbiome, Potato yield optimization, Microbial Diversity, sustainable agriculture
Received: 21 Jun 2025; Accepted: 22 Jul 2025.
Copyright: © 2025 Han, Yang, Li, Zhang, Li, Gai, Sang and Zhang. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: ZiYi Zhang, Inner Mongolia Agricultural University, Hohhot, China
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