This paper shows the results of a research aimed at assessing different nozzle-pressure combinations, considering physical parameters concerned with pesticide application techniques, in an Estatice (Limonium sinuatum Mili) crop under greenhouse conditions. Water sensitive paper (WSP) was used to determine spray distribution and droplet density. The nozzles used were Maruyama C-35, Maruyama 0-35 and Albuz APTpurple. Two tests were made; one, applying the spray to the entire plants and the other, applying the spray only to the top third of the plants. Then, with the best treatments, a biological test was conducted to assess the control of the disease "Moho gris", caused by Botnlys cinerea Pers. The physical tests showed that the best treatments lor the entire plant applications were C-35 at 210 psi, 0-35 at 210 psi (the best behaviour) and APT -purple at 180 psi; for the top third applications the best treatments were C-35 at 190 psi, 0-35 at 190 psi (the best behaviour) and APT-purple at 180 psi. All the assessed treatments showed a pretty good behaviour, with droplet densities upper 450 droplets/cm² and a considerable spray rate reduction. In the biologicaltest, the best disease controls were obtained with 0-35 at 210 psi and APT-purple at 180 psi, being better than the control plot (Maruyama C35 at 260 psi). It was conclusive that the operator and the application method playa rather important role on the finally quality of the applícatíon. ; Este artículo presenta aspectos básicos de una investigación realizada para evaluar combinaciones boquilla-presión, de acuerdo con parámetros físicos de la aplicación, en un cultivo de Estatice bajo invernadero. Para las evaluaciones se utilizaron colectores de papel hidrosensible (WSP). Lasboquillas evaluadas fueron Maruyama C-35, Maruyama 0-35 y Albuz APT-lila. Se realizaron dos tipos de ensayos, uno, para aplicaciones en cobertura total (dirigida a los tres tercios del cultivo), el otro, para aplicaciones dirigidas al tercio superior (cobertura a flor). Con los mejores ...