The main goal of this research was to determine the level of N, P and K applied by fertirrigation, to give the highest performance and quality of green asparagus cv. UC 157 F1• This experiment was installed in August 2010 in the company AGROINDUSTRIAS JOSYMAR S.A. C., located in Virú, La Libertad. The treatments to study were: first level at a dose of 105 kg de N.ha-1, 22 kg de P .ha -1 and 133 kg de K.ha-1, second level ata dose of 126 kg de N.ha"\ 26 kg de P.ha-1 and 159 kg de K.ha-1, third level ata dose of 147 kg de N.ha-1, 30 kg de P.ha-1 and 186 kg de K.ha-1; and the fourth level ata dose of 168 kg de N.ha-1, 35 kg de P.ha-1 and 212 kg de K.ha-1, applied to the soil by fertirrigation, in a design of complete blocks with five replications at random. The characteristics evaluated were the following: height of the plant, number of stems, number of bunches, number of unripe and ripe...