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June 20, 2026Geoderma RegionalOpen Access

Unravelling the chemical and biochemical responses in the rhizosphere of corn after 17 years of pig slurry application

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Authors

ASAndressa Pinto dos SantosCMCarina MarchezanPFPaulo Avelar Ademar Ferreira

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Overview

Randomized trial assesses nitrogen availability and soil quality in corn rhizosphere, suggesting benefits of pig slurry application.

Key Points

  • This study aims to evaluate the changes in chemical properties and microbial activity in the corn rhizosphere after 17 years of pig slurry application.
  • Conducted a long-term field experiment from 2004 to 2021 in southern Brazil with treatments of pig slurry, mineral fertilizer, and a control.
  • Sampled rhizospheric and non-rhizospheric soils during the 2019/20 and 2020/21 growing seasons.
  • Analyzed soil samples for urease, β-glucosidase activities, microbial biomass carbon and nitrogen, total organic carbon, total nitrogen, and pH.
  • Long-term pig slurry application enhanced nitrogen availability and improved soil quality in the rhizosphere compared to mineral fertilizer alone.
  • Pig slurry increased total organic carbon and enzyme activity, specifically β-glucosidase in rhizospheric soil, facilitating nitrogen release.
  • Improved nitrogen availability was noted, despite soil pH remaining similar to control treatment.

Cite This Study

Santos et al. (2026) studied this question.

synapsesocial.com/papers/6a362e62db0793dc1a536162https://doi.org/10.1016/j.geodrs.2026.e01106
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