Delaware Nutrient Management Certification Complete Practice Exam 2025

The appropriate type of container for manure sampling is non-metallic containers. This choice is essential because non-metallic materials, such as polyethylene or polypropylene, do not react with the nutrients or microorganisms in the manure. This ensures that the sample accurately represents the nutrient content and microbial community of the manure, without any contamination or alteration that might occur with other materials.

Using non-metallic containers minimizes the risk of chemical interactions that could skew analytical results, which is particularly important when assessing nutrient levels for proper management practices. Non-metallic containers are also often designed for easy cleaning and reusability, adding to their practicality for sampling.

In contrast, glass containers may not be ideal due to the risk of breakage and difficulty in maintaining an airtight seal, which can lead to gas escape and result in a misrepresentation of the sample. Metallic containers can react with ammonium and other compounds in the manure, potentially changing the sample's properties. Cardboard boxes are not suitable as they are porous and can absorb moisture and nutrients, leading to sample degradation. Thus, non-metallic containers are the best choice for accurate manure sampling.