Which fertilizer carrier has the lowest percent nitrogen analysis?

Diammonium phosphate (DAP) is primarily a phosphate fertilizer and contains both phosphorus and nitrogen, but its nitrogen content is relatively low compared to the other carriers listed. DAP typically has a nitrogen analysis of around 18%, which is moderate but significantly lower than urea, urea-ammonium nitrate solution, and anhydrous ammonia.

In contrast, urea has a nitrogen content of approximately 46%, making it one of the most concentrated nitrogen fertilizers available. Urea-ammonium nitrate solution contains about 28% to 32% nitrogen, and anhydrous ammonia can contain around 82% nitrogen. This stark difference in nitrogen concentration illustrates why DAP is the carrier with the lowest nitrogen analysis among the options given.

Understanding the nitrogen content in fertilizers is crucial for making informed decisions in agronomy, as it affects both crop nutrient management and potential environmental impacts.