PubMed · 2026-03-10
Researchers created biodegradable mulch films from corn-based plastics mixed with biochar, chicken feathers, and oyster shells — waste materials — that improved soil health and boosted crop yields without added fertilizers.
The best-performing mulch film (made with sugarcane-derived biochar, chicken feathers, and oyster shells) achieved a soil quality index of 0.76 — a significant improvement over control treatments.
The biodegradable films improved soil pH, organic matter, cation exchange capacity, and nutrient levels (nitrogen, phosphorus, calcium) while boosting microbial enzyme activity.
Crop yield increased and weeds were suppressed with no external fertilizers applied, demonstrating the films function as both mulch and slow-release soil amendment.
