Characteristics of Fertilizers Fertilizer Designation. Fertilizers are designated by their primary nutrient contents. The amount of dry chemical that can be dissolved in a given amount of water.
Solubility increases as the temperature of the water increases.
Examples of the solubility of dry fertilizers are in Table 1. The density of a liquid fertilizer solution is the pounds per gallon of solution. The density multiplied by the percent content of a nutrient divided by 100 gives the pounds of the nutrient in the solution. Densities of some liquid fertilizers are listed in Table 2. Salting Out Temperature .