Impact of nitrogen fertilization on soil microbial diversity, its mediated enzyme activities, and stem nematode population in sweet potato fields
Excessive nitrogen fertilization in sweet potato cultivation poses significant ecological and economic challenges in China, negatively impacting soil health by altering microbial community diversity, enzyme activities, and increasing the risk of stem nematode damage. In this study, we conducted a field trial in Northeast China, applying 0-72 kg of urea-N per hectare to brown soil under a five-year sweet potato cropping system. The results demonstrated that optimal nitrogen fertilization (64.8 kg ha<sup>-1</sup>) significantly promoted beneficial microbial populations, enhanced soil urease activity, and reduced the incidence of stem nematode disease while maintaining high sweet potato yields.
Authors
- Xingzhong Liu (ORCID: https://orcid.org/0000-0002-3224-8604)
- Meichun Xiang (ORCID: https://orcid.org/0000-0003-4111-9019)
- Jiaxin Li (ORCID: https://orcid.org/0000-0001-7228-2877)
- Jianbin Liu (ORCID: https://orcid.org/0000-0001-6550-9236)
- Fengyu Shi
- Yingbo Zhu
- Dan Yang
- Xinpeng Meng
Institutions
- Chinese Academy of Sciences (CN)
- Nankai University (CN)
- Institute of Microbiology (CN)
- Beijing Academy of Agricultural and Forestry Sciences (CN)
- Hebei Normal University of Science and Technology (CN)
Publication Details
- Journal
- Frontiers in Microbiology
- Published
- 2025-04-15
- DOI
- https://doi.org/10.3389/fmicb.2025.1528575
- Citations
- 1
- Primary Topic
- Nematode management and characterization studies
- Type
- article
- Field-Weighted Citation Impact
- 1.75