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¹ GAP Tarımsal Araştırma Enstitüsü Müdürlüğü, Şanlıurfa
² Siirt Üniversitesi, Ziraat Fakültesi, Tarla Bitkileri Bölümü, Siirt DOI : 10.21566/tarbitderg.281883 - This research is determined effects of irrigations at different periods on water-yield relationships the quality and irrigation programme of winter and summer safflower at Koruklu Central and Koruklu Talat Demirören Research Stations of GAP Agricultural Research Institute between the years 2010-2012 for Harran Plain conditions. Irrigation subjects S1- no irrigation, S2- irrigation in vegetative period, S3- irrigation in flowering period , S4- irrigation in yield formation period, S5- irrigation in vegetative period + irrigation in flowering period S6- irrigation in vegetative period + irrigation in yield formation period, S7- irrigation in flowering period + irrigation in yield formation period, S8- irrigation in vegetative period + - irrigation in flowering period + irrigation in yield formation period , S9 – 50% of irrigation amount to be applied to S8 subject. As a result, yields have been statistically significant difference at summer safflower. Since S8 subject which irrigated at all three period is recommended. Also in case of shortage of water S9 subject is suggested half of the water applied to the subject S8 In all three periods. The water consumption of the suggested subject was 460 mm, the amount of applied irrigation is 367.5 mm. Monthly maximum water consumption was 160 mm was in June. Keywords : Safflower, irrigation, Harran plain