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Plastic granules and their polluting effect on plant growth

Al-Rashedy Hussein Saber Mohammed Ali, Al-Shanoona Reem A.A., Mame Suzan Othman Omar

Journal of Ecological Engineering

2025

Vol. 26, nr 2

319--326

The cultivation of bean plants was carried out in greenhouse conditions using plastic trays with a capacity of 5 kilograms per tray. The results revealed a decrease in growth and some physiological traits of bean plants when the soil was treated with plastic particles at concentrations of 10, 15, 20, and 25 grams per kilogram. A noteworthy drop in the fresh weight of both parts above the soil and root parts was observed when treating the soil with plastic particles at a concentration of 25 grams per kilogram, measuring 2.59 grams and 3.2 grams, respectively. It was also observed that treating the soil with plastic particles at a concentration of 25 grams per kilogram caused a significant decrease in the concentrations of total chlorophyll, carotene, and Relative Water Content, reaching 0.788 milligrams per gram fresh weight, 0.268 milligrams per gram fresh weight, and 41.85%, respectively, collation to the domination treatment. Additionally, treating the soil with plastic particles resulted in an increase in proline concentration in the leaf tissues of bean plants. The highest increase was observed when treating the soil with plastic particles at a concentration of 25 grams per kilogram, with a magnitude of 0.703 milligrams per gram of fresh weight compared to the control treatment.