DB44/T551-2008 Maximum Levels of Injurant in Fertilizers This standard specifies the maximum allowable levels of injurants in fertilizers to ensure safety in agricultural practices. It outlines the necessary chemical analysis methods, safety guidelines, and environmental considerations for handling and applying fertilizers in agriculture. 1. Scope This standard sets the limits for various injurants that may be present in fertilizers. It applies to fertilizers used in agricultural production, ensuring that their application does not negatively affect plant health or the environment. 2. Normative References The following documents are referenced in this standard: - GB2440: Fertilizer Analysis Methods 3. Definitions For the purpose of this standard, the following terms are defined: 3.1 Injurant: Any harmful substance present in fertilizers that can affect plant growth, soil health, or the environment. 3.2 Fertilizer Safety: Guidelines for ensuring that fertilizers do not exceed the maximum allowable levels of injurants as defined in this standard. 4. Maximum Allowable Levels 4.1 The maximum levels of injurants in fertilizers are specified for various substances. These levels are based on chemical composition and are intended to prevent harm to the environment and ensure the safe use of fertilizers in agricultural production. 4.2 Analysis Methods Methods for testing fertilizers to ensure they comply with the standards are provided. These methods are based on recognized international testing procedures for agricultural chemicals. 5. Conclusion Fertilizers must comply with the maximum allowable injurant levels to ensure their safety and effectiveness in agricultural use. This standard provides the guidelines for ensuring that fertilizers contribute to sustainable farming practices. Annex A: Supplementary Information Annex B: Test Methods for Fertilizer Analysis This standard was approved by the National Agricultural Authority and is enforced for use in agricultural sectors nationwide.