What materials can be used to make organic fertilizer?

High-quality organic fertilizer relies fundamentally on suitable raw materials. While many mistakenly believe that any organic waste can be used for fertilizer production, only materials that are pollution-free, easily decomposable, and rich in organic matter are suitable for standardized production. By processing abundant renewable materials through standardized organic fertilizer production lines, waste can be transformed into valuable commercial organic fertilizer that meets national standards. The materials suitable for fertilizer production fall into three main categories, which currently serve as the primary feedstocks for large-scale operations.

The first category consists of livestock and poultry manure—the most classic and nutrient-balanced raw materials. Manure from cattle, sheep, pigs, and chickens is commonly used; these materials are rich in nitrogen, phosphorus, and potassium, as well as the secondary nutrients and trace elements required by crops. Cattle and sheep manure, characterized by high fiber content, a loose texture, and ease of decomposition without soil compaction, are preferred choices for high-quality organic fertilizer. Chicken manure is rich in nutrients but has a high salt content; it must undergo thorough high-temperature composting to prevent issues such as crop burn and soil salinization after application, making it a key raw material requiring careful processing in commercial organic fertilizer production.
The second category comprises agricultural waste, which is widely available, eco-friendly, and highly cost-effective. Crop residues—such as corn stalks, wheat straw, rice straw, and peanut vines—have high carbon content, helping to adjust the carbon-to-nitrogen ratio and improve soil structure. Materials like spent mushroom substrate and fallen leaves or pruned branches from landscaping offer good aeration and high organic matter content; mixing them with manure yields superior composting results. As these materials tend to be hard and decompose slowly, they require pre-processing (such as crushing and blending) to compensate for the limitations of using any single raw material.
The third category includes by-products from agricultural product processing, which serve as excellent feedstocks for high-quality organic fertilizer. Industrial by-products such as rapeseed cake, soybean meal, cassava residue, and sugarcane filter mud are rich in protein and organic matter. They provide a mild, long-lasting fertilizing effect, making them ideal for cash crops like fruits, vegetables, and nursery stock. These materials contain few impurities and offer high safety profiles, effectively enhancing the quality and biological activity of the finished organic fertilizer.
It is important to note that materials which are severely moldy, contaminated with chemicals, or contain excessive heavy metals are strictly prohibited for use in fertilizer production.Only after undergoing a comprehensive organic fertilizer production process—including scientific proportioning of qualified raw materials, high-temperature fermentation, granulation and drying, and screening and packaging—and thorough harmless treatment, can the materials be transformed into safe, high-efficiency finished organic fertilizer, truly achieving the benefits of a crop-livestock production cycle, soil improvement, and enhanced quality and yield.