Microplastics in agricultural soils: sources, impacts, and mitigation strategies

Plastic particles smaller than 5 mm are known as microplastics, and they are becoming a major ecological and environmental hazard in agricultural soils. These particles come from a variety of sources, such as atmospheric deposition, wastewater irrigation, the breakdown of plastic mulches, and the use of biosolids. Once in the soil, microplastics change the microbial communities, water retention, and soil structure through interactions with physical, chemical, and biological processes. They may worsen soil contamination and possibly introduce harmful substances into the food chain by serving as vectors for organic pollutants and heavy metals. Sustainable agriculture is threatened by the presence of microplastics in agricultural soils, which also endanger crop productivity, ecosystem services, and soil health. Reducing plastic use, switching to biodegradable substitutes, improving waste management procedures, and creating cutting-edge technologies for the removal of microplastics are all examples of mitigation techniques. In order to protect soil health and agricultural sustainability, this review examines the causes, effects, and mitigation techniques of microplastics in agricultural soils, highlighting the necessity of coordinated research and policy interventions.