Which liquid fertilizer carrier provides both nitrogen and phosphorus with a common analysis of 10-34-0?

The liquid fertilizer carrier that provides both nitrogen and phosphorus with a common analysis of 10-34-0 is ammonium polyphosphate (APP). This is because ammonium polyphosphate is specifically formulated to contain a higher concentration of phosphorus alongside nitrogen, making it particularly effective for various crop nutrient requirements.

In this analysis, the first number (10) represents the percentage of nitrogen present, while the second number (34) shows the percentage of phosphorus in the form of P2O5. Ammonium polyphosphate is designed to supply these nutrients efficiently, often making it a preferred choice for starter fertilizers, especially when the soil may be low in phosphorus and requires immediate availability of both nutrients at planting time.

Other options lack the specific formulation or nutrient ratio characteristic of ammonium polyphosphate. While urea primarily provides nitrogen without any phosphorus, urea-ammonium nitrate (UAN) carries nitrogen but not phosphorus. Di-ammonium phosphate (DAP), while it does offer both nitrogen and phosphorus, has a different analysis (typically around 18-46-0) and does not meet the specified analysis of 10-34-0. Therefore, ammonium polyphosphate stands out as the correct choice given its specific nutrient