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Impact of Microplastic Contamination in Compost on Wheat Crop Growth: A Study of Bread and Durum Wheat Varieties
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Researchers inventoried microplastic content in commercially available compost and then exposed bread and durum wheat varieties to MP-contaminated growing conditions, measuring the effects on crop growth and raising concerns about microplastic transfer into the human food supply via agriculture.
Microplastics (MPs) are plastic particles less than 5 mm in size emerging as a significant human and health concern. In this study, we have inventoried microplastics content in market-available compost and subsequently examined their impact on wheat crop growth...
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Integrated Impacts of Microplastics Contaminated Compost on Soil–Plant Systems and Bioaccumulation in Lettuce, Tomato, and Radish
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Researchers grew lettuce, tomatoes, and radish in soils amended with four composts of varying microplastic loads, finding that the most contaminated compost reduced early plant growth and resulted in bioaccumulation averaging 118, 81, and 140 microplastic particles per gram dry weight in the respective edible tissues. The study demonstrates that microplastics in compost-amended agricultural soil transfer directly into food crops, posing a direct pathway for human dietary exposure.
Impact of polypropylene microplastics and lead on wheat germination and seedling growth
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Scientists found that tiny plastic particles (microplastics) and lead, alone or together, can stunt wheat seedling growth and stress the plants, and surprisingly, bigger plastic pieces caused more harm than smaller ones. Since wheat is a staple crop worldwide, this research raises questions about whether soil pollution from plastics and heavy metals could affect crop yields and the food we eat, though more research is needed to know exactly how this translates to human health.
Microplastics in MSW-derived compost: release rate, characteristics, ecological risks, and mitigation strategies for sustainable agriculture
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Compost made from household trash often contains tiny plastic bits called microplastics, and surprisingly, the compost from industrial facilities had even more plastic contamination than the raw waste it started from. Since this compost gets spread on farm fields, these plastic fragments can build up in the soil where our food grows. The good news: simply sorting out plastic from food/organic waste before composting (rather than mixing everything together) dramatically cuts down on this contamination, suggesting better recycling habits at home and in waste facilities could help keep microplastics out of our agricultural system.
Impact of Organic Amendments on Microplastics and Heavy Metal Accumulation in Agricultural Soils under Wheat–Maize Rotation
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A two-year field trial under wheat-maize rotation found that all five types of organic amendments—including compost and farmyard manure—significantly increased microplastic contamination in soil layers, with concentrations reaching up to 4,126 microplastic items per kilogram. The findings are important because organic fertilizers are widely promoted as sustainable agricultural inputs, yet this study shows they can be a major vector introducing microplastics into food-producing soils.
Microplastic accumulation in agricultural soils – Impacts on crop microbiomes and soil health
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Researchers review how microplastics from mulch films, sewage sludge, and wastewater accumulate in agricultural soils, disrupting microbial communities, reducing enzyme activity essential for nutrient cycling, and accumulating in crop tissues, raising food safety concerns and highlighting the need for biodegradable alternatives and better wastewater treatment.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.