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61,005 resultsShowing papers similar to Effects of microplastic properties and dissolved organic matter on phosphorus availability in soil and aqueous mediums
ClearDiscrepant effects of microplastics on soil phosphorus availability under different phosphorus fertilizer applications
Researchers studied how polyethylene and polylactic acid microplastics interact with different types of phosphorus fertilizers in soil over 56 days. They found that microplastics reduced the amount of plant-available phosphorus in organically fertilized soils by up to 29%, while increasing it in soils treated with mineral fertilizer. The findings suggest that microplastic contamination in farmland could alter how effectively crops access essential nutrients depending on the fertilizer type used.
Impact of Microplastic Contamination on Phosphorus Availability, Alkaline Phosphatase Activity, and Polymer Degradation in Soil
Researchers studied how different types of microplastics at various concentrations affect phosphorus availability and enzyme activity in soil. They found that microplastics altered phosphorus cycling both by directly supplying phosphorus in some cases and by changing microbial enzyme function. The study suggests that microplastic contamination could disrupt soil nutrient dynamics important for maintaining agricultural productivity.
Conventional and Biodegradable Microplastics Both Impair Soil Phosphorus Cycling and Availability via Microbial Suppression
Researchers conducted a 150-day experiment comparing the effects of conventional polyethylene and biodegradable polylactic acid microplastics on soil phosphorus cycling. Both types of microplastics reduced available phosphorus by approximately 15% and suppressed key phosphorus-cycling bacteria and enzyme activity. The findings challenge the assumption that biodegradable plastics are environmentally benign, showing they disrupt soil nutrient cycles similarly to conventional plastics.
ConventionalandBiodegradable Microplastics BothImpair Soil Phosphorus Cycling and Availability via Microbial Suppression
This 150-day soil incubation study compared how conventional polyethylene and biodegradable polylactic acid microplastics affect microbially-mediated phosphorus cycling. Both MP types suppressed phosphorus-cycling microbial activity, reducing soil phosphorus availability — with biodegradable PLA showing comparable disruption to conventional PE.
Short-term effects of polyethene and polypropylene microplastics on soil phosphorus and nitrogen availability
Researchers examined the short-term effects of polyethylene and polypropylene microplastics on soil nutrient cycling, finding that these particles can alter the availability of phosphorus and nitrogen depending on microplastic size and fertilization conditions.
Insight into the transformation of phosphorus in soil affected by microplastics: A review
This meta-analysis found that microplastics significantly decrease phosphorus availability in soil by 7-56%, driven by particle characteristics, soil properties, and exposure duration. Microplastics alter phosphorus cycling through adsorption, changes in soil chemistry, shifts in microbial communities, and modified phosphatase activity, with implications for farmland fertility management.
Chlorpyrifos degradation and its impacts on phosphorus bioavailability in microplastic-contaminated soil
This study found that microplastics made from polylactic acid (a biodegradable plastic) in soil changed how the pesticide chlorpyrifos breaks down and altered the availability of phosphorus, a key nutrient for crops. The microplastics slowed pesticide degradation and affected soil enzyme activity, which could impact both food safety and crop nutrition. The findings show that even biodegradable microplastics can disrupt important soil processes that affect the food supply.
Effects of microplastics pollution on plant and soil phosphorus: A meta-analysis
Across 781 observations from 73 studies, microplastics significantly reduced plant phosphorus uptake and soil available phosphorus while increasing soil phosphorus leaching. Biodegradable microplastics caused stronger negative effects on soil phosphorus than conventional plastics, and impacts worsened with higher concentrations and longer exposure times.
Size and concentration-dependent effects of polyethylene microplastics on soil chemistry in a microcosm study
Researchers tested how polyethylene microplastics of different sizes and concentrations affect soil chemistry in a controlled lab setting. They found that the smallest microplastic particles reduced the soil's ability to hold nutrients by nearly 13% and altered dissolved organic matter, while also leaching phthalate chemicals into the soil. The study suggests that as microplastics accumulate in agricultural soils, they could impair important soil functions related to nutrient retention and pollutant movement.
Effects of microplastics and carbon nanotubes on soil geochemical properties and bacterial communities
In a 100-day soil experiment, researchers found that both conventional polyethylene and biodegradable polylactic acid microplastics significantly altered soil chemistry, nutrient levels, and bacterial communities. At higher concentrations, microplastics reduced nitrogen and phosphorus availability and changed the types of bacteria present, which could affect soil fertility. These findings matter because healthy soil bacteria are essential for growing the food we eat, and widespread microplastic contamination could quietly undermine agricultural productivity.
Effect of different microplastics on the mobilization of soil inorganic phosphorus by exomycorrhizal fungi
Researchers examined how different microplastic types affect soil inorganic phosphorus mobilization, finding that polymer type and particle size influence phosphorus release from soil minerals, with implications for nutrient cycling in plastic-contaminated soils.
Effects of plastisphere on phosphorus availability in freshwater system: Critical roles of polymer type and colonizing habitat
This study examined how biofilm-covered microplastics of different polymer types affect phosphorus availability in freshwater, finding that polymer type and colonization habitat determined whether plastisphere biofilms acted as phosphorus sources or sinks, with implications for nutrient cycling in aquatic ecosystems.
Effect of microplastics used in agronomic practices on agricultural soil properties and plant functions: Potential contribution to the circular economy of rural areas
Researchers measured the effects of microplastics used in common agricultural practices — including mulch film residues and irrigation-delivered particles — on soil physical, chemical, and biological properties. Microplastic presence altered soil aggregation, water retention, and microbial community composition, with effects depending on plastic concentration, polymer type, and soil texture.
Effect of Polyvinyl Chloride Microplastics on Bacterial Community and Nutrient Status in Two Agricultural Soils
Polyvinyl chloride microplastics at environmentally relevant concentrations did not broadly alter bacterial diversity in two agricultural soils over 35 days, but did significantly change available phosphorus levels and shifted the abundance of specific bacterial genera. The results suggest that microplastic pollution can subtly reshape nutrient cycling and microbial community composition in farmland soils.
Soil constituents mediate the effects of microplastics from biodegradable mulch on soil biogeochemical properties
Researchers studied how soil constituents (organic matter, clay content) mediate the effects of microplastics from biodegradable mulch films on soil biogeochemical properties. Soil type significantly altered how MPs influenced carbon and nitrogen cycling and microbial communities, suggesting that biodegradable MPs cannot be assumed safe across all soil contexts.
Polyethylene microplastic can adsorb phosphate but is unlikely to limit its availability in soil
Researchers tested whether polyethylene microplastics can adsorb phosphate, a key plant nutrient, and found that while adsorption does occur, it is substantially weaker than phosphate binding to soil. The study compared pristine and UV-weathered microplastics across various pH and ionic strength conditions. Evidence indicates that even at concentrations much higher than those found in agricultural fields, microplastics are unlikely to significantly reduce phosphate availability to plants.
[Effects of Polylactic Acid Microplastics （PLA-MPs） on Physicochemical Properties and Microbial Communities of Wheat Rhizosphere Soil].
Researchers investigated how polylactic acid microplastics affect wheat rhizosphere soil and found that they significantly altered soil chemistry, increasing phosphorus and organic matter while decreasing total nitrogen and pH. The microplastics also reduced the richness and diversity of soil microorganisms, with larger particles and higher concentrations causing the greatest disruption. The study suggests that even biodegradable plastics can meaningfully reshape soil microbial communities and nutrient cycling in agricultural settings.
Microplastics Influence Phosphate Adsorption in Volcanic Ash Soil
Researchers found that adding polyethylene microplastics to volcanic ash soil slightly increased the soil's ability to hold phosphorus but also made phosphorus easier to wash away, potentially reducing its availability to plants. This suggests microplastic contamination in farmland soils could quietly alter nutrient cycling in ways that affect crop growth.
Effect of different polymers of microplastics on soil organic carbon and nitrogen – A mesocosm experiment
Researchers found that adding polyethylene and biodegradable microplastics to agricultural soil altered carbon and nitrogen dynamics, with biodegradable microplastics having stronger effects on soil organic carbon decomposition and nutrient cycling than conventional plastics.
Diverse Impacts of Microplastic-derived Dissolved Organic Matter at Environmentally Relevant Concentrations on Soil Dissolved Organic Matter Transformation
Researchers examined how dissolved organic matter leached from biodegradable and conventional agricultural mulch microplastics affects soil chemistry at environmentally realistic concentrations. They found that UV-exposed microplastic leachates were more bioavailable and caused greater changes to soil organic matter than those produced in dark conditions. The study suggests that even at low concentrations, microplastic-derived compounds can meaningfully alter soil carbon dynamics, with effects varying by soil type.
Long-term effects of conventional and biodegradable microplastics from mulch on freshwater communities
Researchers examined the long-term effects of both conventional and biodegradable mulch film microplastics on freshwater zooplankton populations after leaching from agricultural soils. Even environmentally relevant concentrations of mulch-derived microplastics reduced zooplankton reproduction, with biodegradable mulch microplastics showing effects comparable to conventional plastics.
Evaluating the impacts of microplastics on agricultural soil physical, chemical properties, and toxic metal availability: An emerging concern for sustainable agriculture
This study tested how five common types of microplastics affect soil properties and heavy metal availability in agricultural soil over 90 days. Microplastics changed soil structure, nutrient levels, and water-holding capacity, and actually reduced the availability of toxic heavy metals at higher plastic concentrations -- highlighting the complex ways plastic pollution is altering the farmland that produces our food.
Microplastics alter microbial structure and assembly processes in different soil types: Driving effects of environmental factors
Researchers investigated how biodegradable polylactic acid and conventional polyethylene microplastics affect soil microbial communities across different soil types. They found that PLA increased dissolved organic carbon and pH while decreasing nitrogen availability, whereas polyethylene had contrasting effects depending on soil type. The study reveals that microplastic impacts on microbial community structure and assembly processes are soil-type-specific, with dissolved organic carbon driving changes in red soil and pH being the primary factor in fluvo-aquic soil.
Effects of polylactic acid microplastics on dissolved organic matter across soil types: Insights into molecular composition
Researchers investigated how biodegradable polylactic acid microplastics affect dissolved organic matter in three different types of paddy soil. They found that the microplastics altered the molecular composition of organic matter in soil-specific ways, with some soils showing increased humic substances and others showing more protein-like compounds. The study highlights that even biodegradable plastics can change soil chemistry, and the effects vary depending on soil type.