Abstract— This study was carried out during the growing seasons of 2014/2015 and 2015/2016, in the Application and Experiment Fields of Namık Kemal University, Faculty of Agriculture, Department of Field Crops, according to the Split-Plot Experiment Design in Randomized Blocks with 3 replications. In the study, it was aimed to determine the effect of three different amounts of seeds (30-50 and 70 kg/ha) applied to the unit area on the grain yield and yield components in five varieties of flax (Selection, York, Nekoma, Pembina, Neche). In the first year of the experiment on these genotypes, the plant height was 70.91-77.46 cm, the number of axillary branches was 6.50-10.24, the number of capsules was 48.46-81.87, the thousand grain weight (TGW) was 5.51-5.85 g and the grain yield was 1260.00-1863.30 kg/ha; while in the second year, the plant height was 74.61-82.25 cm, number of capsules was 14.50-27.52, the TGW was 5.51-5.83 g and the grain yield was 1715.50-2071.10 kg/ha. Due to the increase in the sowing norm, the number of plants increasing in the unit area has also significantly increased the grain yield in both years. In addition, it was observed that the number of axillary branches, the number of capsules, and the weight of thousand grains significantly decreased with the increasing plant density, although there was no difference in plant heights between the two years in accordance with the increase in the number of seeds. While the number of seeds in the capsule was not affected by the number of seeds in the first year of the experiment, it decreased significantly in the second year when the number of seeds used in the unit area increased.
Keywords— oilseed flax, seeding rate, grain yield, number of capsules, thousand grain weight.
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