Root application consists in supply nutrients and products with biostimulant action directly to the plant roots. The most efficient and main method to perform root application is fertigation through drip irrigation, which is the application of plant nutrients through the irrigation system. In these systems fertilizers and biostimulants dissolved in water in irrigation system and the plant roots receive water and nutrients at the same time and location.
In fertigation, fertilizer application is made in small and frequent doses that fit within scheduled irrigation intervals matching the plant water use to avoid leaching. Fertilizer use efficiency up to 95% can be achieved through drip fertigation. Fertigation is a modern agro-technique, which provides an excellent opportunity to maximize yield and minimize environmental pollution.