Fertile materials refer to substances that are rich in nutrients and support the growth of plants. These materials often include organic matter, such as decomposed leaves and animal waste, which enhance soil quality. Fertile soils typically contain essential elements like nitrogen, phosphorus, and potassium, which are crucial for plant health. In agriculture, fertile materials are vital for crop production. Farmers often use fertilizers, which are concentrated forms of these nutrients, to improve soil fertility. Additionally, practices like composting and crop rotation help maintain and enhance the fertility of the soil, ensuring sustainable farming and food security.