Effects of warming and fertilization on nirK-, nirS- and nosZ-type denitrifier communities in paddy soil

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 955, P. 177057 - 177057

Published: Oct. 21, 2024

Language: Английский

Comparative and synergistic impacts of lime and biochar on soil properties, nitrogen transformation, and microbial function in acidic soils under tobacco cropping

Frontiers in Plant Science, Journal Year: 2025, Volume and Issue: 16

Published: Feb. 7, 2025

Lime and biochar are widely utilized to enhance nitrogen utilization in crops grown on acidic soils, though each has its own set of limitations. Understanding their combined effects is crucial for optimizing soil remediation strategies. This study investigates the impact lime efficiency (NUE) a tobacco monoculture system, which been practiced 20 years acidified soils Fuzhou, southeastern China, over period from 2021 2022. Four treatments were applied: control (CK), alone (L), (B), lime-biochar combination (L+B). The results indicated that all significantly improved NUE, with increases ranging 20.07% 27.17% compared CK. Biochar (B) was more effective than treatment (L+B) showed comparable alone. Correlation analysis revealed pH exchangeable base cations facilitated transformation, thereby enhancing NUE. (L, L+B) promoted nitrification potential rhizosphere soil, whereas application (B, resulted elevated nitrate content. Microbial functional enhanced nitrification, while fostered dissimilatory reduction, improving retention. Pearson correlation demonstrated strong positive relationship between reduction both alkali-hydrolyzable contents. These findings suggest enhances promotes retention, together increasing availability. integrates these benefits, yielding offers valuable insights into synergistic use mitigating acidification management agricultural systems.

Language: Английский

Synergistic co-evolution of rhizosphere bacteria in response to acidification amelioration strategies: impacts on the alleviation of tobacco wilt and underlying mechanisms

Frontiers in Microbiology, Journal Year: 2024, Volume and Issue: 15

Published: Oct. 1, 2024

Soil acidification represents a severe threat to tobacco cultivation regions in South China, exacerbating bacterial wilt caused by Ralstonia solanacearum . The comprehension of the underlying mechanisms that facilitate restoration rhizosphere microbial communities “healthy soils” is imperative for ecologically managing wilt. This study focuses on acidified soils have been subjected continuous 20 years. experimental treatments included lime (L), biochar (B), and combination (L+B), addition control group (CK). Utilizing biology niche theory, we assessed disease suppression effects, changes soil properties, co-evolution community. Each treatment significantly reduced 16.67% 20.14% compared (CK) ( p < 0.05) increased yield 7.86% 27.46% 0.05). (B) proved be most effective, followed lime-biochar (L+B). key factors controlling were identified through random forest regression analysis as an increase pH exchangeable bases, along with decrease acidity. However, alone led bulk density available nutrients, whereas both improved these parameters No significant correlation was found between abundance incidence. Nonetheless, all expanded ecological breadth average variation degree (AVD), enhanced positive interactions cohesion within community, intensified negative involving suggests optimizing community niches enhancing pathogen antagonism are mitigating soils. It recommends using mixtures amendments due their potential economic benefits. offers valuable insights strategies presents novel perspective research Solanaceous crops.

Language: Английский