Journal Of Environmental Protection And Ecology, vol.18, no.4, pp.1425-1432, 2017 (SCI-Expanded)
This study was carried out during summer in 2010–2011 at the experimental fields on
Faculty of Agriculture in Van Yuzuncu Yil University, Van province, Turkey. Different sulphur
doses (0, 25 and 50 kg ha–1) were applied on safflower cultivars including Dincer (C1), Remzibey
(C2) and Yenice (C3) in a randomised complete block design (RCBD) with three replicates. Several
characteristics such as plant height (cm), number of branches (branch plant–1), number of secondary
branches (piece), number of heads in the plant (piece), number of seeds per head (piece), thousandseed
weight (g), seed yield (kg ha–1), head diameter (cm), oil content (%) and protein content (%)
were determined. Results showed that plant height, number of secondary branches, number of seeds
per head, thousand-seed weight, seed yield, head diameter, oil content and protein content were significantly
increased using different sulphur concentrations, but branch numbers as well as number
of heads in the plant were not affected. The highest seed yield (1109.3 kg ha–1) was obtained at 50
kg ha–1 sulphur concentration while the lowest yield (929.8 kg ha–1) was observed in control plots.
The seed yields were 1039.8 and 1000.0 kg ha–1 in the first and second year, respectively.
Keywords: safflower, sulphur, yield.