Farmers use biodegradable mulch to improve soil fertility and water usage by covering the soil surface around plants. This mulch helps to suppress weeds, reducing competition for nutrients and water. It also conserves soil moisture by minimizing evaporation, thus improving water usage efficiency. Over time, as the mulch decomposes, it adds organic matter to the soil, which enhances soil structure and fertility. This organic enrichment promotes healthy root growth and supports a diverse soil microbiome, further improving soil health and plant productivity.