TURKISH JOURNAL OF AGRICULTURE AND FORESTRY, cilt.43, ss.492-499, 2019 (SCI İndekslerine Giren Dergi)
Experiments were conducted under provincial conditions of Kayseri, Turkey, for two years in the growing seasons of 2014 and 2015 to determine the effects of irrigation water applications based on different sugar beet root zone depths and different organomineral fertili7Prs on sugar beet yield, root quality, water consumption, and water use efficiency. Two constant root depths (D-1 = 0.9 m and D-2 = 0.6 in) and one active water extraction root depth (D-3 = 0.4-0.9 m) were investigated. A mineral fertilizer (F-1), an organomineral fertilizer (F-2), and organic + mineral fertilizer (F-3) were considered as the subtreatments in the experiments carried out in a completely randomized block split-split plots design with 3 replications. Despite the lower nitrogen and phosphorus quantities applied, the F-2 treatment produced the same sugar beet root yield (95.31 t/ha) as F-1 (88.59 t/ha) and F-3 (94.56 t/ha) treatments. The irrigation water requirements of D-1 for two years were 22.8% and 27.6% greater than the D-2 and D-3 treatments, respectively. Irrigation water use efficiencies of D-2 and D-3 treatments were higher than D-1. Digestion and recoverable sugar percent and Na, K, and N contents of roots were not affected significantly by the treatments. Using organomineral fertilizers would offer various advantages for disposing of huge urban waste deposits and returning organic matter to agricultural areas. Use of active root water extraction depth or 0.60-m root depth for irrigation applications will also contribute to efficient use of water resources and improve the income of sugar beet farmers due to reduced irrigation costs.