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    DETERMINATION OF YIELD AND QUALITY PARAMETERS OF OIL SUNFLOWER GENOTYPES GROWN IN TURKEY
    (Soc Field Crop Sci, 2020) Gul, Volkan; Coban, Furkan
    Sunflower (Helianthus annuus L) has gained importance in the world as a significant oilseed for vegetable oil. The reactions of the same sunflower genotypes to varying ecologies are different, and yield and yield characteristics may vary depending on this. In this study, we were interested in understanding the differential sensitivity of specific sunflower genotypes to different agro-ecological environments in Turkey. A 2-year (2015-2016) study was conducted on a clay-loam soil in a low and high altitude environment to (i) evaluate the genotype x location x year interaction (GxLxY) for sunflower genotypes, (ii) predict yield components performance and identify high stable sunflower genotypes, and (iii) make genotype-specific management and high performing genotype recommendations within and across agro-ecological regions. The highest yield of seed and oil yield was obtained from the Coral (G(1)) genotypes, averaging 3558.5 and 1535.6 kg ha(-1), respectively in Erzurum and from the 64LC108 (G(4)) genotypes averaging 2905.7 and 1267.4 kg ha(-1), respectively in Samsun ecological conditions. As a result, the determination of the sunflower genotypes suitable for the region will provide the opportunity to obtain high-yield and high quality products because the soil, environment and climatic factors of the region in which they are grown are very useful in determining seed yield and oil content.
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    Effect of Liquid and Solid Vermicompost Applications on Growth and Yield of Sunflower (Helianthus annuus L.)
    (Adem Yavuz Sonmez, 2021) Gul, Volkan; Coban, Furkan; Ozturk, Erdogan
    Vermicompost, which is not harmfull to the environment, and is increasing in agricultural production in terms of both gaining to the soil and benefiting the waste. This research was carried out in 2019 in Bayburt ecological conditions in order to determine the impacts of different doses of solid (250, 500 and 750 kg da(-1)) and liquid (0, 250, 500 and 750 ml da(-1)) vermicompost fertilizers on the flowering and maturation period (days), stem diameter (cm), table diameter (cm), plant height (cm), thousand weight (g) seed yield (kg da(-1)), seed internal rate (%) oil ratio (%) and oil yield (kg da(-1)) of sunflower (Helianthus annuus). In the experiment, it was determined that all parameters were statistically significant compared to p<0.01. The highest seed (218.7 kg da(-1)) and oil yield (75.9 kg da(-1)), which are the most important parameters in oil sunflower, were obtained in 750 kg da(-1) solid and 750 ml da(-1) Liquid vermicompost application (K3S3). As a result, the use of solid and liquid vermicompost application in oil sunflower together will be beneficial in obtaining the highest healthy, high quality seed and oil yield.