Kırşehir Koşullarında Şeker Pancarında Uygun Sulama Programı.

The aim of this study is to compare the results of two different studies investigating the effects of different levels of irrigation on yield and quality of sugar beet (Beta vulgaris L.) and to propose a suitable irrigation program for sugar beet in Kırşehir conditions. These studies were carried out in a farmer's field in Çukurçayır in the center of Kırşehir in 2012 and 2013. Experiments were performed in randomized blocks split-plot design with three replications. In both experiments, irrigation scheduling utilized by using Class-A pan evaporation method within irrigation intervals. In the first study, treatments consisted of one irrigation interval (7 days); the two sugar beet varieties (C1: Esperanza and C2: Calixta) and three different irrigation levels (I1, I2, and I3) adjusted according to the Class-A pan evaporation using three different plant-pan coefficients (Kcp1: 0.5; Kcp2: 0.75; and Kcp3:1.00). In the second study; treatments consisted one sugar beet variety (C1:Isella ) four nitrogen fertilizer levels (N1: 30kg ha−1; N2: 40 kg ha−1; N3: 50kg ha−1; and N4: 60 kg ha−1) based on the same irrigation program. In the first study, the lowest and the highest values of irrigation water and plant water consumption (Et) were observed in the I1 and I3 treatments in both years, respectively. In 2012, the lowest and the highest root yields were observed in the I3C1 (85.38 t ha−1) and I2C2 (75.10 t ha−1) treatments. In the second experimental year, the lowest and the highest root yields were achieved with the I3C1 (66.13 t ha−1) and I1C2 (47.57 t ha−1) treatments, respectively. The impact on the examined parameters of irrigation programs in the C2 treatment had not significant. On the other hand, in the C1 treatment of irrigation programs had a significant effect on sugar rate, sugar yield, and other parameters. If the economic yield and quality are desired, the I1C1 treatment can be suggested for sugar beet production under the similar soil and climatic conditions. In the second study; the highest WUE and IWUE values, the best quality parameters (Na, K, and alpha-amino nitrogen), and economic sugar beet root yield was determined in the treatment of I1N1 (Kcp1: 0.5 and 30 kg ha−1 of N). When both study results are examined, it can be said that Kcp1: 0.5 plant-pan coefficient in sugar beet irrigation program is most important for economic yieldy and quality. [ABSTRACT FROM AUTHOR]