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Effects of Different Sowing Arrangements and Nitrogen Applications on Yield and Yield Components of Oilseed Sunflower in Dryland Conditions
(Kahramanmaras Sutcu Imam Univ, 2016) Tursun, Ayse Ozlem; Killi, Fatih
The purpose of this study was to investigate the effects of various sowing arrangements and nitrogen applications on yield and yield components on dryland in Kahramanmaras in 2008 and 2009. The experiment was set according to split plot experimental design with four replications; sowing arrangements (skip-row-1, skip-row-2, conventional sowing, and narrow-row sowing) were assigned to main plots and nitrogen doses (0, 4, 8, 12 kg N da(-1)) to sub-plots. In the study, protein content (%), head diameter (cm), 1000-seed weight (gr), oil ratio (%), seed yield (kg da-1), oil yield (kg da-1) were investigated. End of the study, sowing arrangements statistically significant affected all traits except for oil ratio, while N application had arrangements statistically significant effects on traits besides head diameter and oil ratio. Depending on sowing arrangement and N application seed yield varied between 114.04 kg da(-1) (Skip-row 2) and 250.15 kg da(-1) (narrow row), and between 163.87 kg da(-1) (control) and 187.92 kg da(-1) (8 kg da(-1) N) respectively. The highest seed and oil yields were obtained from narrow row arrangement with 8 kg da(-1) N application.