Which type of solid manure typically has the highest concentration of phosphorus?

Poultry broilers typically have the highest concentration of phosphorus among the various types of solid manure. This is primarily due to the diet that poultry are fed, which often contains higher levels of phosphorus compared to the diets of other livestock. The nutrient composition of poultry manure reflects these dietary inputs, resulting in elevated phosphorus concentrations.

Additionally, the nitrogen-to-phosphorus ratio in poultry manure is lower than in the manure of other livestock. This characteristic can lead to over-application scenarios if not managed properly since the phosphorus can quickly accumulate in soils, potentially leading to runoff and water quality issues. Understanding the phosphorus content in manure types is crucial for effective nutrient management and reducing environmental impacts.