This publication compares poultry litter, poultry litter ash, and inorganic fertilizers used in crop production. It explains how poultry litter and poultry litter ash are produced, outlines their nutrient characteristics, and describes common inorganic fertilizer sources. A nutrient analysis table provides average moisture, nitrogen (N), phosphate (P₂O₅), potash (K₂O), and sulfur (S) values for each fertilizer type, helping readers understand differences in nutrient concentration and fertilizer management.