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61,005 resultsShowing papers similar to Microplastic contamination in farmyard manures: implications for sustainable agriculture
ClearMicroplastics in manure: Sources, analytical methods, toxicodynamic, and toxicokinetic endpoints in livestock and poultry
Researchers reviewed the occurrence of microplastics in livestock and poultry manure, finding hundreds to thousands of particles per kilogram depending on the animal, with plastic-contaminated feed and mulching films as the primary sources. Because manure is widely spread on farmland as fertilizer, it represents a significant — and underappreciated — pathway for microplastics to enter agricultural soils and ultimately the food chain.
Quantification and identification of microplastics in organic fertilizers: the implication for the manufacture and safe application
Researchers measured microplastic contamination in 23 commercial organic fertilizers, finding widespread presence at levels that could meaningfully contribute to agricultural soil pollution when fertilizers are applied. The results raise concerns about organic fertilizers as an underappreciated pathway for microplastics entering farm soils and the food system.
Microplastic appraisal of soil, water, ditch sediment and airborne dust: The case of agricultural systems
Researchers surveyed microplastic contamination across agricultural soils, water, airborne dust, and ditch sediments in farm settings with different management practices. They found 11 types of microplastics in soil, with the highest concentrations in fields using plastic mulch, and documented the spread of particles into nearby water bodies and air. The study reveals that both plastic mulch and compost application contribute to microplastic pollution in agricultural landscapes.
Quantification and Analysis of Microplastics in Farmland Soils: Characterization, Sources, and Pathways
This study quantified and characterized microplastics in farmland soils from multiple sites, identifying agricultural mulch films, irrigation water, and compost as major sources and documenting widespread soil contamination across different farming regions.
Organic amendments as vectors of micro and macro plastic pollution of terrestrial ecosystems
Researchers analyzed seven types of organic amendments commonly applied to farmland, including sewage sludge, manure, composts, and digestates, for microplastic contamination. They found microplastics in all samples, with sewage sludge containing the highest levels and a wide variety of polymer types. The study demonstrates that organic soil amendments are an important and underappreciated pathway through which both micro and macro plastics enter agricultural soils.
Occurrence and distribution of microplastics in organic fertilizers in China
Researchers surveyed microplastic contamination in organic fertilizers across China, finding widespread plastic particles in compost, manure, and biosolids, identifying fertilizer application as an emerging pathway for microplastic accumulation in agricultural soils.
Microplastics in Agricultural Soil
This book chapter surveys microplastic contamination in agricultural soils, reviewing the sources of plastic inputs, concentrations found in different farming systems, and the effects of MPs on soil properties, microbial communities, and crop yields.
Microplastic contamination of organic fertilisers applied to agricultural soils
This study examined microplastic contamination in organic fertilizers applied to agricultural soils, finding plastic particles in multiple fertilizer types. Organic fertilizers derived from sewage sludge or compost can introduce microplastics into farmland, potentially contaminating crops and groundwater.
Quantification and analysis of surface macroplastic contamination on arable areas
Researchers quantified macroplastic contamination on German farmland, finding that fields fertilized with compost had 42 times more plastic particles per hectare than unfertilized fields, indicating that compost application and roadside littering are major pathways for plastic entering agricultural soils.
Influences of land use and depth profile on the characteristics of microplastics in agricultural soils
Researchers examined how land use and soil depth profile influence microplastic characteristics in agricultural soils, finding that wastewater and sludge application, plastic mulching, and atmospheric deposition are key sources, and that MP type and abundance vary with soil management practice and depth, highlighting the importance of vertical distribution in soil MP studies.
Macro and microplastics in the soil: abundance, characterization, identification, and interactions under different land uses in an agricultural sub-basin
Researchers examined the abundance, characterization, identification, and interactions of macro- and microplastics in soils under different land uses within an agricultural sub-basin, assessing how land-use patterns influence plastic pollution distribution and potential interactions with the soil environment.
Microplastics pollution modulated by farming regimes under multi-scenarios
Microplastic concentrations in agricultural soils were found to vary with farming regimes, with certain practices under mulching leading to higher accumulation. The study highlights how common agricultural methods contribute to soil microplastic pollution and supports calls for better plastic mulch management.
An Overlooked Entry Pathway of Microplastics into Agricultural Soils from Application of Sludge-Based Fertilizers
Researchers analyzed sludge-based fertilizers applied to agricultural soils and found high microplastic concentrations (hundreds to thousands per kilogram of dry weight) that were transferred to soils after application, identifying this as an important but overlooked pathway for terrestrial microplastic contamination.
Distribution characteristics of microplastics in typical organic solid wastes and their biologically treated products
Researchers extracted and characterized microplastics from food waste, livestock manure, sludge, and their composted or digested products, finding MPs in all organic waste types with concentrations varying by matrix. The study highlights organic waste management pathways as an understudied route for microplastic transfer to agricultural soils.
Microplastic distribution and transport in agricultural soils : from field to burrow scale
Researchers investigated the spatial distribution and transport of microplastics in agricultural soils through field surveys and laboratory experiments. They found that sewage sludge amendments led to significantly higher microplastic contamination than mineral fertilizers, and that earthworm activity was a key mechanism for moving plastic particles deeper into soil. The study highlights the importance of accounting for both horizontal and vertical microplastic transport in soils when assessing agricultural pollution.
Are microplastics in livestock and poultry manure an emerging threat to agricultural soil safety?
This review examines the overlooked problem of microplastics in livestock and poultry manure, which enters agricultural soil when manure is used as fertilizer. Manure processing can actually make microplastics smaller, rougher, and more numerous, and the particles often carry additional pollutants like heavy metals, antibiotics, and pathogens. This creates a concerning cycle where microplastics from animal feed and farm equipment contaminate manure, which then introduces these particles directly into cropland and the food supply.
Distribution pattern and risk assessment of microplastics contamination in different agricultural systems
Researchers surveyed microplastic contamination in agricultural soils across six sites in Coimbatore, India with distinct farming practices, finding microplastics in 81% of organic matter-removed samples. The study revealed that different agronomic inputs and land management practices produce distinct microplastic contamination profiles.
A nationwide assessment of microplastic abundance in agricultural soils: The influence of plastic crop covers within the United Kingdom
A nationwide study of 108 agricultural sites across the United Kingdom found microplastics in all soil samples, with concentrations averaging 3,680 particles per kilogram. Fields where plastic crop covers were used had significantly higher microplastic levels than those without plastic covers. This study shows that common agricultural plastic use is a major source of soil microplastic contamination, which could ultimately affect crop quality and enter the food chain.
Microplastics in Agricultural Soils: An Emerging Threat to Soil Health, Microbial Ecology, Crop Productivity, and Food Safety
This review examines how microplastics accumulate in agricultural soils from sources like plastic mulch, sewage sludge, and atmospheric deposition. Researchers found that these particles can disrupt soil microbial communities, harm plant health, and potentially enter the human food chain. The study highlights the urgent need for mitigation strategies to address this growing but often overlooked form of pollution in farmland.
Unraveling the characteristics of microplastics in agricultural soils upon long-term organic fertilizer application: A comprehensive study using diversity indices
Researchers analyzed microplastic contamination in agricultural soils that had received organic fertilizers (pig manure, chicken manure, and sewage sludge compost) for 12 years. All three fertilizer types introduced significant microplastic pollution, with risk levels classified as high across all treatments. This study shows that organic fertilizers, often considered environmentally friendly, are a major pathway for microplastics to enter the soil and potentially the food we grow in it.
Significance of Microplastics in Agricultural Soil
This review examines the significance of microplastic contamination in agricultural soils, estimating it contributes approximately 20% of total plastic pollution in terrestrial ecosystems. Microplastics enter farmland through irrigation, mulch, and sewage sludge, and can be transported deeper into soil by plant roots and soil organisms. The accumulation of microplastics in agricultural land poses risks to soil health and the food grown in it.
Microplastics in agricultural soils: a new challenge not only for agro-environmental policy?
This review addresses microplastic pollution in agricultural soils, identifying farming practices like mulching and sludge application as significant sources and discussing potential impacts on soil health and food safety. It calls for both policy action and more research on microplastic behavior in terrestrial environments.
Soil contamination by microplastics in a small French agricultural watershed
Researchers characterized microplastic contamination in agricultural soils across a small French watershed, examining how various farming practices influence microplastic sources, distribution, and fate in soil environments outside of previously studied regions like China.
Microplastics in Agriculture- a Review
This review examines the growing presence of microplastics in agricultural environments, covering their sources from plastic mulch films and irrigation water, their effects on soil health and crop quality, and the implications for food safety and sustainable agriculture.