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This research aims to explore how the nitrification inhibitor DMPP enhances nitrogen recovery in maize through rhizosphere modifications.

May 9, 2026GeodermaOpen Access

Mechanistic insights into the rhizosphere cascade: how the nitrification inhibitor DMPP reshapes the root microbiome and metabolome to enhance maize nitrogen recovery

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Randomized trial shows how DMPP boosts nitrogen recovery in maize, suggesting a beneficial feedback loop with microbes.

This research aims to explore how the nitrification inhibitor DMPP enhances nitrogen recovery in maize through rhizosphere modifications.
Conducted a rhizobox experiment with maize using 15N isotopic tracing and 16S rRNA sequencing.
Applied untargeted metabolomics to analyze soil changes after DMPP application.
Utilized a path model to connect pH changes, microbial shifts, and nitrogen recovery efficiency.
DMPP increased maize nitrogen recovery efficiency by 41.1% compared to conventional fertilization.
Rhizosphere pH was reduced, leading to metabolic changes that increased dissolved organic carbon by 84.7%.
Beneficial bacterial taxa such as Streptomyces and Microvirga were selectively enriched while oligotrophic groups were suppressed.

Lei et al. (2026) studied this question.

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