In Turkey, harvesting of olive is generally made by hand. Because of this, growers have a difficulty time harvesting. In addition, the cost is also high. When the harvest is made by hand or by shaking the branches with hand, the fruits are sometimes harvested with their clusters and some of the olives, which are not ripened, are harvested, as well. The aim of this experiment is to induce homogenous maturity in olive by using of Ethrel and mechanic shaker. The treatment was carried out by Manzanillo variety as tree applications. Ethrel was applied on trees a month before harvesting in order to induce homogenous maturity. 2000, 4000, and 8000 ppm doses of Ethrel were selected. In addition to these, (handing shaker) and mechanic shaker (pneumatic shaker) were used. Experiment was designed with three replicated randomized parcels. The results suggest that 2000, 4000 and 8000 ppm doses of Ethrel induced homogenous maturity. However in the control trees, it is observed that ripened fruit is harvested together with the unripened ones. It is also observed that all the fruit dropped ratios, in all three selected Ethrel applications, is approximately 100 %. Besides in the application of 8000 ppm Ethrel dose, early ripening is observed when compared to other doses. In addition to these, it is also observed that harvested fruits of all Ethrel doses were without clusters. In conclusion, it can be suggested that the use of high doses of Ethrel is not needed and 2000 ppm Ethrel is more suitable than the other doses in terms of economical situation
