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Edirne, Turkey

Semerci A.,Trakya Agricultural Research Institute | Kaya Y.,Trakya Agricultural Research Institute | Peker K.,Selcuk University | Sahin I.,Trakya Birlik | Citak N.,Trakya Birlik
Bulgarian Journal of Agricultural Science | Year: 2011

Turkey exist among the top ten countries of world sunflower production that approximately 60% of sunflower areas is in Trakya Region which is European part of Turkey. The agricultural enterprises in Trakya Region have experienced due to intensive sunflower production, and this region is the main area of country's vegetable oil industry. Although the sunflower yield is above the world average in agricultural enterprises in Trakya Region where is selected as a field of research, irrigated sunflower areas is only 2.79% of cultivated areas. Sunflower exists at second rank (42%) after the wheat in the research area. The adoption rates of farmers to new sunflower varieties including herbicide resistant (IMI) and the genetically resistant ones to broomrape are over 90%. While the average sunflower yield as 1.794 ton / ha and water productivity as 345.15 g / m 3 were measured in the research area, as 1.929 ton / ha seed yield and as 369.14 g / m 3 water productivity was determined in genetically resistant varieties. On the other hand, the revenue of sunflower was calculated 834.55 US$ per ha in the research area and a positive relationship between the revenue from sunflower and the water efficiency of the varieties in the study. It is revealed in the research results that among provinces as well as per unit area yields of sunflower varieties and water productivity levels exhibited statistically differences even though they had the similar climate structure and production technologies. It is concluded in the study that sunflower production should be planted in irrigated conditions, use of the cultivars that have strong reactions to irrigation and high oil content will increase farmer income as well as will reduce the Turkey's current oil deficit. Source


Semerci A.,Trakya Agricultural Research Institute | Kaya Y.,Trakya Agricultural Research Institute | Sahin I.,Trakya Birlik | Citak N.,Trakya Birlik
Helia | Year: 2011

In Turkey, which ranks the tenth country worldwide in the sunflower (Helianthus annuus L.) production, 60% of the production is carried out in the Thrace region. Therefore agricultural enterprises in Thrace, situated in the European part of Turkey, have become masters in producing sunflower, and have become the centre of vegetable oil industry in the region owing to the produced raw material. In this study, we aim to investigate the yield and income of the enterprises producing sunflower in Thrace Region in Turkey, as well as to discover whether the factors affecting the production are different. In the final section of the study, cost analysis is explained in detail on the basis of the cities and sizes of sunflower production area. The data used in this study were collected from 571 agricultural enterprises which were chosen to represent the whole Thrace region with the Stratified Random Sampling method. At the end of the study, although the cities where the study was conducted have the same climate and production technologies, it is found that in addition to the income and yield obtained per unit area, the terms of land rent, pesticide, fertilizing and seed, which directly affect the cost, show differences among cities statistically. Source


Semercl A.,Trakya Agricultural Research Institute | Kaya Y.,Trakya Agricultural Research Institute | Sahin I.,Trakya Birlik | Citak N.,Trakya Birlik
Helia | Year: 2010

About 65% of sunflower production in Turkey, which is the world's 11 th largest producer of sunflower based on the FAO data, occurs in the Thrace region. The biggest problem in sunflower areas in the Thrace region is broomrape (Orobanche cernua L.). Three types of sunflower cultivars are planted in the region, namely hybrids genetically resistant to broomrape (GRH), nonresistant ones (NRH) and IMI (Imidazolinone) herbicide resistant ones (IMIH), which control both broomrape and key weeds in sunflower production. The adoption situation and the performances of these three sunflower hybrid types were studied in the research. The research data was obtained from 571 agricultural enterprises, which were determined based on the Stratified Random Sampling Method in the Thrace region. Sunflower is grown on 42% of the total cultivated land surveyed in the research and accounts for 23% of the total agricultural revenue. The adoption rate and degree of IMIH and GRH sunflower hybrids were calculated to be over 90%. The highest yield (1,915.10 kg ha -1) was obtained from GRH hybrids in the research areas. A high yielding potential and easier weed control are seen by the farmers as being among the most important factors for choosing a particular type of sunflower seed. Statistical differences were observed among the sunflower hybrid types based on seed yield, revenue, and seed amounts. The highest net profit was obtained from GRH hybrids In the study. Additionally, based on the results, NRH hybrids were found to be more profitable than IMI hybrids. Source

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