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Urease Inhibitor Strengthening Nano Zerovalent Iron Performance in Plant Growth Regulator-Paclobutrazol Degradation
Minzhe Zhou1, Bin Ma1, Efrizal Efrizal2,3
1College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China.
Journal of Agricultural and Food Chemistry
|June 25, 2025
Summary
Nano zerovalent iron (nZVI) and urease inhibitor (NBPT) reduce paclobutrazol residues in crops and soil. This combination enhances crop yield and microbial community stability, offering a safer agricultural solution.
Area of Science:
- Agricultural Science
- Environmental Science
- Soil Microbiology
Background:
- Paclobutrazol, a plant growth regulator, accumulates in soil and crops, posing environmental and microbial risks.
- Nano zerovalent iron (nZVI) shows potential for degrading pesticide residues but can disrupt soil microbial communities.
Purpose of the Study:
- To evaluate the combined effects of nZVI and NBPT on paclobutrazol degradation, crop yield, and soil and endophytic microbial communities.
- To assess NBPT's role in mitigating nZVI's negative impacts on microbial stability.
Main Methods:
- Incubation experiments to assess paclobutrazol degradation.
- Plant-growth experiments using lettuce to evaluate crop yield and residue levels.
- Analysis of soil and endophytic microbial community diversity and functionality.
Main Results:
- Combined nZVI and NBPT significantly reduced paclobutrazol residues in lettuce (34.4%) and soil (15.4%).
- The combined treatment improved lettuce yield and enhanced endophytic microbial diversity and function.
- NBPT mitigated nZVI's destabilizing effect on soil microbial communities, maintaining functional stability.
Conclusions:
- The combined application of nZVI and NBPT offers an effective strategy for managing paclobutrazol residues.
- This approach enhances crop safety and yield while preserving soil microbial community stability.
- This integrated method provides a sustainable solution for agricultural chemical management.
