# Microplastics turn soil into a toxic delivery system

> A five-year study found microplastics carry pollutants and bacteria through farmland across Europe.
- Title: Microplastics turn soil into a toxic delivery system
- Summary: A five-year study found microplastics carry pollutants and bacteria through farmland across Europe. Microplastics in soil act as carriers for toxins…
- Keywords: microplastics, soil contamination, agriculture, europe, pesticides, antibiotic resistance, trojan horse effect, minagris, earthworms, food production, biodegradable plastics, soil health
- Source: Mother Jones — https://motherjones.com/environment/2026/09/microplastics-soil-trojan-horse-toxins-food-pathogens
- Author: Pippa Neill
- Published: 2026-09-17T07:30:00+00:00
- Read time: 1 min
- Topics: microplastics, soil contamination, agriculture, europe, pesticides, antibiotic resistance, trojan horse effect, minagris, earthworms, food production, biodegradable plastics, soil health
## Microplastics found in every farm tested
A five-year EU study found microplastics in all 227 agricultural fields tested across 11 European countries. The contamination reflects both current farming and historical land use.
## Plastics deliver toxins like a Trojan horse
Microplastics absorb pollutants, pesticides, and bacteria, then carry them through soil. Fields with the most tire particles also had the highest levels of toxic chemicals and metals.
## Plastic surfaces breed antibiotic resistance
Microplastics create microbial habitats called plastispheres. These surfaces showed increased antibiotic-resistant genes, with pesticides amplifying the effect even more.

> Once these plastics fragment into the ground, they're practically impossible to remove.
## Earthworms and soil life disrupted
The Trojan horse effect impacts earthworms and soil organisms by disrupting nutrient cycles. Earthworms play a vital role in shaping soil microbiome composition.
## Plants struggle under plastic stress
Higher microplastic concentrations reduced lettuce leaf area, chlorophyll, and photosynthesis. When combined with drought, plants performed worse than under either stress alone.
## Biodegradable plastics aren't the answer
Biodegradable plastics can still break down into microplastics and cause ecological damage. Researchers say policy must require standardized monitoring and risk assessments.

> Biodegradable plastics were not automatically safer and could still degrade into microplastics.
## Key takeaway

Microplastics in soil act as carriers for toxins, pesticides, and antibiotic-resistant bacteria, threatening food production and soil health.