The Preliminary Research on Shifts in Maize Rhizosphere Soil Microbial Communities and Symbiotic Networks under Different Fertilizer Sources

Abstract

The use of chemical fertilizer along with organic fertilizer is an important agricultural practice that improves crop yield but also affects soil biogeochemical cycles. In this study, a maize field experiment was conducted to investigate the effects of NPK fertilizer (NPK), organic fertilizer (OF), and their combination (NPK+OF) on soil chemical properties, bacterial and fungal community structures, and diversity compared the control (CK, without any fertilizer). The results showed that the application of OF and NPK-combined OF increased soil organic matter (OM), total N, total P, available N, available P, and available K levels. For alpha diversity analyses, the application of fertilizers led to decreases in soil bacterial and fungal Shannon indices (except for NPK in fungi). Compared with CK, NPK, OF, and NPK+OF fertilization treatments significantly increased the abundances of Acidobacteriota, Gemmatimonadota, and Basidiomycota. Network analysis showed that fertilization produced fewer connections among microbial taxa, especially in the combination of NPK and OF. A redundancy analysis combined with Mantel test further found that the soil OM, available N and P were the main soil-fertility factors driving microbial community variations. Therefore, using organic fertilizer or biological fertilizer combined with chemical fertilizer to improve the status of soil C, N, and P is a promising method to maintain the balance of soil microorganisms in maize field.

Effect of Nitrogen Addition on Tiger Nut (Cyperus esculentus L.) Rhizosphere Microbial Diversity and Drive Factions of Rhizosphere Soil Multifunctionality in Sandy Farmland

“…N addition is a common agricultural practice aimed at enhancing plant growth, but it also has profound effects on soil ecosystems, particularly on microbial communities that play crucial roles in soil health and ecosystem functions. The addition of nitrogen has been observed to significantly influence soil microbial dynamics, affecting both fungi and bacteria, albeit in different ways [51]. Fungi have shown a predominant response to soil enzymatic activities, specifically enzymes such as N-acetylglucosaminidase (NAG), cellobiohydrolase (CBH), and β-glucosidase (BG) (Figure S3).…”

Characterization of four digestates from different types of substrates used in biogas production in Northern Peru

“…However, knowing the organic matter levels is essential when fertilizing a crop with a biol (García-López et al, 2023). As it decomposes, organic matter provides essential plant nutrients such as N, P, and K. At the same time, it improves soil quality by improving soil structure, promoting microbial activity, increasing the amount of organic carbon and enhancing soil biodiversity (Ji et al, 2023;Mahmood et al, 2020).…”

Metagenomic Analysis for Unveiling Agricultural Microbiome

“…This process is crucial for enhancing soil fertility and plant nutrition. A study by Ji et al [18] on different fertilizer sources in maize cultivation shows how organic and inorganic fertilizers distinctly influence soil microbial communities, affecting nutrient cycling and availability. Zhou et al [19] provide insights into how microbial community diversity under different manure treatments influences methane emissions in paddy fields, suggesting strategies to manage greenhouse gas emissions while maintaining soil fertility.…”