The search carried out in Homs Agricultural Scientific Research Center on the field of Eriobotrya Japonica during 2013 and 2014 using the naphthalene acetic acid (NAA) on two cultivars of Eriobotrya Japonica of Cypriot origin (Karantoki and Morfou) growth on the native rootstocks and reduce fruit setting percentage, the age of the trees 15 years, has been used material NAA concentration 20 - 40 ppm.