Pulse Brain · Growing Health Evidence Index
Tier 3 — Observational / field trialPeer-reviewed

In situ degradation of biodegradable plastic mulch films in compost and agricultural soils

Henry Y. Sintim, Andy I. Bary, Douglas G. Hayes, Larry C. Wadsworth, Marife B. Anunciado, Marie English, Sreejata Bandopadhyay, Sean M. Schaeffer, Jennifer M. DeBruyn, Carol Miles, John P. Reganold, Markus Flury

The Science of The Total Environment · 2020

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Summary

This field-based investigation assessed the environmental fate of biodegradable plastic mulch films used in horticultural production systems. The authors quantified degradation rates in both compost and agricultural soil conditions, examining whether films certified as biodegradable actually mineralise within agronomically relevant timeframes. Findings as suggested by the title and co-author expertise suggest variable degradation trajectories depending on soil type, moisture, and temperature conditions.

UK applicability

The study's findings on mulch film persistence are relevant to UK horticulture, where plastic mulches are widely used in vegetable and soft fruit production. Results would inform best management practices for mulch removal and soil amendment strategies, particularly as UK policy increasingly scrutinises synthetic material residues in agricultural land.

Key measures

Polymer degradation kinetics, film fragmentation rates, chemical residue analysis, microbial community response, soil carbon dynamics

Outcomes reported

The study examined the in situ degradation rates and pathways of biodegradable plastic mulch films when left in agricultural soils and compost systems. Measurements focused on film fragmentation, chemical composition changes, and residue persistence over time.

Theme
Farming systems, soils & land use
Subject
Soil biology & microbiology
Study type
Research
Study design
Field trial
Source type
Peer-reviewed study
Status
Published
Geography
United States
System type
Horticulture
DOI
10.1016/j.scitotenv.2020.138668
Catalogue ID
BFmor3g7fe-cci3g1

Topic tags

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