Summary
This 2022 review synthesises evidence on the long-term agronomic and environmental consequences of biodegradable mulch film residues—particularly microplastics—on plant–soil health systems. As the use of biodegradable mulches in horticulture has expanded, uncertainty persists regarding incomplete degradation and residual plastic fragmentation in soil; the authors appear to assess impacts on microbial ecology, nutrient cycling, and plant productivity. The findings suggest potential risks warranting further field validation and standardised degradation protocols.
Regional applicability
Biodegradable mulch adoption in UK horticulture (particularly soft fruit and vegetable production) is growing; this review's conclusions on residual microplastics and soil health impacts are directly applicable to UK agricultural policy and practice, particularly regarding regulation of plastic film products and soil quality standards.
Key measures
Plant growth metrics, soil microbial abundance and diversity, soil health indicators, microplastic accumulation and persistence in soil
Outcomes reported
The study examined long-term effects of biodegradable mulch film residues and associated microplastics on plant growth, soil microbial communities, and soil health indicators. It assessed the persistence and environmental fate of mulch film fragments in agricultural soil systems.
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