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Related Experiment Video

Updated: Jan 15, 2026

Isolation of Native Soil Microorganisms with Potential for Breaking Down Biodegradable Plastic Mulch Films Used in Agriculture
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Long-term biodegradable mulch films application in agricultural fields: effects on soil functionality and

M Mazzon1, C Edo2, S Guerrini1

  • 1Department of Agricultural and Food Sciences, University of Bologna, Viale Fanin, 46 40127, Bologna, Italy.

Journal of Environmental Management
|January 13, 2026
PubMed
Summary

Long-term use of biodegradable mulch films (BMFs) in agriculture did not increase microplastic accumulation. BMFs application even enhanced soil microbial biomass and enzyme activity, supporting their sustainable use.

Keywords:
Biodegradable plasticsLong-term applicationMicroplasticsMulch filmsSoil functionality

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Area of Science:

  • Agricultural Science
  • Environmental Science
  • Soil Science

Background:

  • Microplastic (MP) accumulation in agricultural soils is a growing concern, especially from plastic mulch films.
  • Biodegradable mulch films (BMFs) offer a sustainable alternative, but long-term field data are limited.

Purpose of the Study:

  • To assess MP occurrence and soil functionality in Italian farms with over a decade of BMF application.
  • To determine if BMFs contribute to MP accumulation and impact soil biochemical parameters.

Main Methods:

  • Soil sampling from BMF-treated and control plots.
  • Isolation and chemical characterization of microplastics (25 μm-5 mm).
  • Assessment of soil biochemical parameters (microbial biomass carbon, enzyme activities).

Main Results:

  • MP composition was diverse and mainly from external sources, not directly linked to BMFs.
  • MP concentrations were lower in BMF-treated plots compared to surrounding areas.
  • BMF application generally enhanced microbial biomass carbon and enzymatic activities, though site-specifically.

Conclusions:

  • Long-term BMF use does not appear to cause significant MP accumulation or negatively impact soil functionality.
  • BMFs show potential as an environmentally compatible alternative to conventional plastic mulches.
  • Further research is needed on the long-term transformation and fate of BMFs in field conditions.