We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Influência nos processos de retenção e transporte de pesticidas e ecotoxicidade de microplásticos em solo tropical
AI summary Read the abstract
Researchers investigated how high-density polyethylene microplastics from agricultural mulch films influence the retention and transport of pesticides in tropical soil, finding that microplastics alter pesticide dynamics and may increase their environmental persistence and ecotoxicity.
Pesticides are commonly applied to control weeds to facilitate the management of agricultural pests in tomato cultivation, and high-density polyethylene (HDPE) mulching systems are also used.However, when exposed to adverse weather conditions, these plastic films may fragment and generate microplastics (MPs), which may favor the retention of pesticides in the soil and change the dynamics of these products in the environment.Thus, being pesticides and MPs contaminants that coexist in agricultural systems, this study aimed to investigate the behavior of pesticides diflubenzuron, fluazinam, and metribuzin under the influence of HDPE microplastics and their ecotoxicological effects on earthworms (Elsenia andrei) in a tropical soil.Sorption and desorption were analyzed utilizing the "batch" equilibrium test, with the application of different concentrations of the pesticides (1/4, 1/2, 1, 2, and 4), from that recommended in the field, and of the MPs (0, 0.25, 1 and 4 % w/w).The leaching was analyzed in glass columns (200 mm in 6 hours) with the same MPs concentrations.The distribution of pesticides was checked in the 0 -10 cm layer and the leachate.Mobility was verified by utilize utilizing yerthin-layerraphy with the same concentrations of MPs.The ecotoxicity study was carried out through the exposure of (Elsenia andrei) earthworms to different concentrations (0, 0.25, 0.5, 1, 2, and 4 %,w/w) of PM in a natural soil for 14 days where the parameters of mortality and weight loss were measured.The results showed that adding different concentrations of MPs to soil affects the pesticide transport retention processes depending on their concentration, physicochemical properties, and pesticide doses.On the other hand, MPs did not cause lethality to the earthworms Elsenia andrei; however, there was a biomass loss during the exposure period.Through this study, it is possible to understand the behavior of the association between MPs and pesticides in the soil matrix and its ecotoxicological effects.
More Papers Like This
Influence on the processes of retention and transport of pesticides and ecotoxicity of microplastics in a tropical soil
AI summary Read the abstract
Researchers investigated how high-density polyethylene microplastics from agricultural mulch films affect the behavior of three pesticides in tropical soil, finding that microplastics altered pesticide sorption, transport, and leaching while also increasing ecotoxicological effects on earthworms.
Interactions of Microplastics with Pesticides in Soils and Their Ecotoxicological Implications
AI summary Read the abstract
This review examines how microplastics interact with pesticides in soil environments, finding that microplastics can sorb and transport pesticides, potentially altering their bioavailability and toxicity to soil organisms and ecosystems.
Polyethylene microplastics alter pH-dependent leaching and toxicity of imidacloprid in soil columns
AI summary Read the abstract
Researchers passed imidacloprid pesticide through soil columns containing polyethylene microplastics and found that microplastics delayed leaching and reduced early-stage transport by roughly 21%, but paradoxically increased the toxicity of leachate to test organisms — suggesting microplastics alter both the fate and ecological risk of co-occurring pesticides in agricultural soils.
Microplastics as carriers of heavy metals and pesticides in agricultural soil
AI summary Read the abstract
Researchers review how microplastics in agricultural soils act as vectors for heavy metals and persistent organic pollutants, using their high surface area and hydrophobicity to adsorb toxic compounds and increase their mobility and bioavailability, with cascading effects on soil structure, microbial communities, and food chain contamination.
Insight into the effect of microplastics on the adsorption and degradation behavior of thiamethoxam in agricultural soils
AI summary Read the abstract
Researchers found that microplastics in agricultural soil alter both the adsorption and degradation behavior of the pesticide thiamethoxam, with different plastic types showing varying effects on how the pesticide binds to soil and breaks down over time.
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.