Why is it important to use non-metallic containers for manure sampling?

Using non-metallic containers for manure sampling is essential because they prevent chemical reactions with the manure. Manure can contain various nutrients and compounds that might interact with metals; such interactions could lead to contamination or alteration of the sample's composition. This is critical for accurate nutrient analysis, as any chemical changes could misrepresent the nutrient profile of the manure, resulting in ineffective management decisions. By utilizing non-metallic containers, you ensure that the integrity of the sample is maintained, which is vital for reliable testing and subsequent nutrient management practices.