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Micro- and Nanoplastics in Agri-Food Systems: Sources, Fate and Food Safety Implications
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Plastic mulches, coated fertilizers, and compost used in farming are breaking down into tiny microplastic and nanoplastic particles that build up in soil, potentially getting absorbed by crops and moving up the food chain to us. This review of existing research finds that farmland may be one of the biggest hidden sources of plastic pollution, but scientists still don't know exactly how much ends up in our food or what it does to our health, mainly because there's no standard way to measure it yet. The takeaway: this is a real and growing concern worth watching, even though the exact risk to your dinner plate isn't fully mapped out.
The increasing use of plastics in agriculture has enhanced crop productivity, water-use efficiency, and food supply stability. Nevertheless, the ongoing degradation of agricultural plastics and waste-derived materials has resulted in the widespread occurrence of microplastics (<5 mm) and nanoplastics (<1 μm) in agricultural soils, raising concerns about ecosystem functioning, food safety and human health. This review was conducted using literature obtained primarily from Web of Science, Scopus and PubMed. Publications published between 2019 and 2026 were primarily included. In addition, selected landmark studies published before 2019 were incorporated when they provided foundational concepts, methodological frameworks, or highly cited evidence that remains essential for understanding the sources, fate, and impacts of micro- and nanoplastics in agricultural systems. The review synthesizes recent scientific evidence regarding the sources, environmental fate, biological interactions, and food-chain transfer of micro- and nanoplastics within agricultural and food production systems, tracing their movement from farm to fork. Major contamination pathways include agricultural plastic materials, organic amendments, polymer-coated agrochemicals and atmospheric deposition. Mechanisms governing transport, aging, plant uptake and trophic transfer are also discussed. Current evidence suggests that agricultural soils are among the largest terrestrial reservoirs of micro- and nanoplastics; however, substantial uncertainties remain regarding environmental concentrations, plant uptake under field conditions, and human health risks due to methodological limitations and the lack of standardized analytical protocols. Future research should focus on standardized monitoring methods, enhanced risk assessment frameworks, the development of biodegradable alternatives, and integrated mitigation strategies to reduce plastic contamination.
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Tiny plastic particles from mulch films, compost, and irrigation water are building up in farm soils, and this review pulls together existing research on how they affect crops—from stressing plant cells to potentially moving into the parts we eat. The evidence that plastics can travel from soil into food is growing but still incomplete, so scientists say more realistic farm-based studies are needed before we know exactly how much this matters for what ends up on our plates.
The Hidden Threat Beneath: Fate, Behaviour and Effects of Microplastics in Agricultural Soils
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This review pulls together years of research showing that tiny plastic particles are building up in farm soils—often at higher levels than in ocean water—from sources like plastic mulch, sewage sludge, and irrigation water. These microplastics can harm soil health and creatures like earthworms, get absorbed into crops we eat, and have even been found in human tissue like the placenta, raising real questions about long-term food safety. While scientists are still figuring out exactly how dangerous this is, the findings suggest it's worth paying attention to how plastic use in farming might quietly be making its way into our food supply and bodies.
Microplastics in agricultural landscapes: assessment of environmental risks and systemic approaches to sustainable management
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Tiny plastic bits are building up in farm soil from sources like plastic mulch films, sewage sludge, coated fertilizers, and contaminated irrigation water — and this review pulls together existing research to map out how that pollution spreads and what risks it poses. The concern for your health: these microplastics can disrupt soil health and potentially work their way up the food chain into what we eat, though more monitoring is needed to fully understand the danger. The paper mainly argues for better tracking systems and stricter regulations (similar to EU standards) to catch this problem before it grows.
The hidden burden of microplastics in soils: sources, impacts, and sustainable solutions – a review
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This review pulls together existing research on how tiny plastic particles (microplastics) are building up in farm soils—coming from sources like plastic mulch, wastewater, and sewage sludge used as fertilizer. These particles can harm soil microbes and disrupt nutrient cycles that crops depend on, which matters because it ties directly to our food supply and the plastic content of the food we eat. The authors note that scientists still need better tools to detect microplastics and stronger policies to clean up and prevent this pollution before it becomes a bigger problem for food security.
Microplastics and nanoplastics: fate, transport, and governance from agricultural soil to food webs and humans
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This review examines how microplastics and nanoplastics from agricultural sources like plastic mulch and fertilizers accumulate in soil, get taken up by plants, and enter the food chain. Many lab toxicity studies use unrealistically high plastic concentrations, but even the lower levels found in real farm fields can pose long-term cumulative risks, and major gaps remain in standardized risk assessment methods.
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