Fertigation Fertigation is the application of water soluble fertilizers in irrigation waters. The most common nutrient used in fertigation is nitrogen since it is readily available in several water soluble forms and it is the nutrient that moves most readily in our soils. The main advantage of fertigation is the ability to provide precise amounts of fertilizers to the root zone of the crop when the crop needs them. Injection Pumps Various types of injectors can be used. The most common ones are those which do not require a power source.
Examples are venturi type injectors and water driven pumps.
The water driven pumps are popular because they are inexpensive, adjustable and accurate. Fertilizers Nitrogen is the nutrient most often applied through fertigation. Many N fertilizers are water soluble and have a high nutrient concentration. If you make your own nutrient solution from dry fertilizers use either greenhouse grade materials or allow mixtures to settle overnight and decant off the liquid before injecting into the drip irrigation system. It is important to make sure that only clean water passes through your injector to prevent clogging.