Abstract
The accumulation of plastics in agricultural soil ecosystems is
hazardous to terrestrial environments by disrupting soil structure,
hindering nutrient cycling, and affecting soil organisms. The effects of
waste polyethylene (PE) films on the physical, chemical, and biological
qualities of soil, and how its resilience and crop growth capacity were
impacted, were investigated. PE waste films were integrated with the
soil in proportions reflective of environmentally relevant contamination
levels for in situ soil incubation with a test period of four
months. Thereafter, a commonly consumed vegetable, lettuce (
Lactuca sativa) was cultivated for four weeks until maturity. The
soil with the highest concentration of PE waste film (2 % w w
−1) significantly reduced the shoot height as well as
fresh and dry weights. Soil bulk density decreased with increasing PE
film concentration whereas the chemical and biological properties
remained relatively stable during the incubation period. Although the
accumulation of waste PE film in soil did not alter its chemical
properties, the results of this study indicated that soil structure was
disrupted and plant growth inhibited.