What factor influences the amount of micronutrients supplied by manure or biosolids?

The amount of micronutrients supplied by manure or biosolids is significantly influenced by the type of livestock and their feeding ration. Different livestock species have varied diets which can result in different nutrient profiles in their waste. For example, cattle may produce manure high in certain micronutrients such as copper and zinc, depending on their feed composition and mineral supplementation. Similarly, poultry manure can be rich in phosphorus and potassium, alongside micronutrients, because of the specific feeds designed to optimize poultry health and production.

Understanding the specific dietary needs and typical nutrient output of different livestock allows for better management of nutrient applications and helps ensure that crops receive the appropriate micronutrients required for growth.

In contrast, while other factors like soil pH levels, weather conditions, and the type of crop grown may affect nutrient availability and uptake, they do not directly correlate with the actual micronutrient content provided through manure or biosolids—making livestock type and feeding ration the primary influencer in this context.