Water-soluble fertilizers for fertigation (also called fertigation products) typically include nitrogen, phosphorus, and potassium. To these three basic elements, chelated micronutrients, the mesonutrients calcium and magnesium, or even algae, betaine, and fulvic acid can be added for more complex fertilizers.

The different NPK (nitrogen, phosphorus, and potassium) ratios of the formulations vary depending on the desired objective and the phenological stage in which they are used. Water-soluble fertilizers can also be used for foliar application.