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61,005 resultsShowing papers similar to Occurrence of microplastic in livestock and poultry manure in South China
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.
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.
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.
Microplastic contamination in farmyard manures: implications for sustainable agriculture
Researchers investigated microplastic abundance and characteristics in non-commercial farmyard manures - a largely understudied pathway for microplastic entry into agricultural soils. The study assessed how manure application may serve as a source of microplastic contamination in farmland, contributing to understanding of plastic pollution cycles in terrestrial agricultural ecosystems.
Occurrence of microplastic, antibiotics, hormones, and heavy metals in livestock and poultry manure in west iran
Researchers characterized microplastics, antibiotics, hormones, and heavy metals in cow and poultry manure from livestock farms in western Iran. Microplastics were found in 71.4% of samples with PE and PP as the dominant types, and antibiotic concentrations were highest for doxycycline and enrofloxacin, identifying manure as a compound contamination source for agricultural soils.
The distribution of microplastics in soil aggregate fractions in southwestern China
Researchers investigated microplastic distribution across different soil types in agricultural and forested areas near a lake in southwestern China and found plastic particles in every sample, with concentrations as high as 42,960 particles per kilogram. Approximately 95% of the particles fell within the microplastic size range, and fibers were the dominant form, likely originating from textiles and agricultural materials. The study demonstrates that microplastic contamination in soils is extensive and varies with land use practices.
Spatial Distributions, Compositional Profiles, Potential Sources, and Intfluencing Factors of Microplastics in Soils from Different Agricultural Farmlands in China: A National Perspective
Researchers conducted a nationwide survey of microplastics in Chinese agricultural soils, collecting 477 samples from 109 cities across 31 regions, and identified spatial distribution patterns and key factors influencing farmland microplastic contamination.
Status, characteristics, and ecological risks of microplastics in farmland surface soils cultivated with different crops across mainland China
Researchers conducted a nationwide survey of microplastics in farmland soils across mainland China, covering over 30 crop types in 109 cities. They found microplastics in all sampled soils, with concentrations varying by crop type, region, and farming practices such as plastic film mulching and irrigation methods. The study provides the most comprehensive picture to date of agricultural microplastic contamination in China and identifies the key farming practices that contribute most to soil pollution.
The abundance, characteristics and distribution of microplastics (MPs) in farmland soil—Based on research in China
This review analyzed microplastic contamination in farmland soil across China and found that fertilizer use and plastic mulch film are the biggest contributors, increasing soil microplastic levels by 170% and 232% respectively. The most common types found were polyethylene and polypropylene fragments and fibers. These findings are concerning because microplastics in farm soil can be taken up by crops and enter the human food supply.
Potential sources and occurrence of macro-plastics and microplastics pollution in farmland soils: A typical case of China
This review examines plastic pollution in Chinese farmland soils, finding that agricultural practices like mulch film use and sewage sludge application are major sources of both macro- and microplastics that accumulate over time.
Occurrence, distribution, and characteristics of microplastics in agricultural soil around a solid waste treatment center in southeast China
Researchers found microplastic contamination in all agricultural soil samples surrounding a solid waste treatment center in southeastern China, with concentrations up to 2,360 particles per kilogram and evidence that weathered polyethylene and polypropylene particles are accumulating heavy metals on their surfaces.
Abundance and characteristics of microplastics in soils with different agricultural practices: Importance of sources with internal origin and environmental fate
Microplastic abundance and characteristics were examined in soils representing four agricultural practice types in Chinese farmland to evaluate the influence of land use on plastic particle accumulation. Microplastic concentrations and polymer types varied by agricultural practice, with plastic mulch film use and irrigation water source as key drivers of farmland soil contamination.
Antibiotics and microplastics in manure and surrounding soil of farms in the Loess Plateau: Occurrence and correlation
Researchers found that both antibiotics and microplastics were present simultaneously in livestock manure and surrounding farmland soil across the Loess Plateau in China. Tetracycline antibiotics were the most common, and microplastic concentrations reached up to 88,000 particles per kilogram in manure. Using manure as fertilizer transfers both contaminants to cropland, creating a pathway for antibiotics and microplastics to enter the food chain through crops grown in contaminated soil.
Microplastics abundance associated with farmland use types and the impact on soil microbial communities: A case study in Southern China
Researchers surveyed microplastic contamination across orchard, paddy field, and vegetable field soils in Southern China and analyzed how it affected soil microbial communities. They found microplastic levels ranging widely across sites, with very small particles under 30 micrometers being most common, and identified 32 different polymer types. The study shows that farmland use type and agricultural practices like plastic mulching significantly influence both the amount and type of microplastic contamination in soils.
Microplastics in household fecal sewage treatment facilities of rural China
Researchers analyzed 65 fecal sewage samples from rural households across 27 Chinese provinces to characterize microplastic contamination in household treatment facilities. The study found microplastic abundances ranging from 47 to 143 particles per liter, with higher levels in northern China, and identified fecal sewage irrigation as a potential source of microplastic contamination in farmland soils.
Potential sources and occurrence of macro-plastics and microplastics pollution in farmland soils: A typical case of China
This study provides the first comprehensive survey of plastic pollution in Chinese farmland soil, analyzing data from 163 publications covering 728 sites. The average microplastic abundance was 4,537 particles per kilogram of dry soil, with agricultural plastic films and organic waste being the biggest sources. Since China is the world's largest user of agricultural plastics, these findings highlight how farming practices can lead to significant microplastic contamination of the soil that grows our food.
Agricultural plastic mulching as a source of microplastics in the terrestrial environment
Researchers analyzed 384 soil samples from 19 Chinese provinces and found that macroplastic fragments were concentrated in agricultural fields with plastic mulch film use, providing large-scale field evidence linking agricultural mulching to terrestrial plastic contamination.
Exploring the Occurrence Characteristics of Microplastics in Typical Maize Farmland Soils With Long-Term Plastic Film Mulching in Northern China
A survey of 225 soil samples from maize farmland with long-term plastic film mulching in northern China found widespread microplastic contamination, with abundance, distribution, and polymer composition reflecting the history of film use and agricultural management practices.
Macro- and micro-plastic accumulation in soils under different intensive farming systems: A case study in Quzhou county, the North China Plain
Soil samples from six farming systems in the North China Plain showed macroplastic abundances from 0.2 to 46.8 kg/ha and microplastic concentrations up to 3.7×10⁴ items/kg, with greenhouse and mulched vegetable fields showing the highest contamination.
Occurrence characteristics and risk assessment of microplastics in agricultural soils in the loess hilly gully area of Yan' an, China
Researchers measured microplastic levels in agricultural soil, water, and fertilizer in a farming region of central China and found an average of about 4,500 particles per kilogram of soil. Over 90% of the particles were smaller than 100 micrometers, and the main types were polyethylene and PET from sources like plastic mulch and compost. The findings show that farming practices are introducing significant microplastic contamination into the soil where food is grown.
Distinct microplastic distributions in soils of different land-use types: A case study of Chinese farmlands
Microplastic distribution across six types of farmland land use was surveyed from soils in five Chinese provinces to determine how agricultural practices shape soil microplastic contamination. The study found that microplastic abundance varied significantly by land-use type, with plastic mulch film use and irrigation practices as key contributing factors.
Abundance, spatial distribution, and characteristics of microplastics in agricultural soils and their relationship with contributing factors
Researchers found microplastic concentrations of 2,800 to 82,500 particles per kilogram in agricultural soils of Hainan Island, China, with plastic mulching, farming practices, and environmental factors all contributing to spatial variation in contamination levels.
Microplastic pollution and the related ecological risks of organic composts from different raw materials
Researchers analyzed microplastic contamination in 124 organic compost samples made from livestock manure, poultry waste, crop straw, and solid waste, finding that all types contained significant microplastic loads. Solid waste compost had the highest levels while crop straw compost had the lowest, and the particles showed signs of weathering and mineral attachment. The findings suggest that applying organic compost to farmland may be an underappreciated source of microplastic pollution entering agricultural soils.
The occurrence and distribution characteristics of microplastics in the agricultural soils of Shaanxi Province, in north-western China
Researchers surveyed microplastic abundance and polymer types in agricultural soils across multiple counties in Shaanxi Province, northwestern China, finding widespread contamination correlated with agricultural activity intensity and plastic mulch film use.