Effects of Different Sowing Dates on the Seed Yield and Some Yield Components of Sesame Grown under Bursa Ecological Conditions

This research was carried out with aim of determining the effects on sesame seed yield and some yield components of four sesame (Sesamum indicum L.) varieties (Boydak, Golmarmara, Sarisu and Tanas) and four sowing times (1 May, 15 May, 1 June and 15 June) in research field of the Uludag University, Mustafakemalpa？a Vocational School in 2015 and 2016. In the study, plant height, number of branches, number of capsules per plants, number of seed per capsules, weight of one thousand seed and seed yield characteristics were examined. While sowing times were effective on all the characters examined, differences between the varieties were found as important for other characters except for the number of branches in the plant. Two years average results indicated that, the highest seed yield was obtained as 1887.8 kg ha-1 from G？lmarmara variety. In terms of sowing times, the highest average seed yield was obtained from sowings of May 15 and May 1 for years of 2015 and 2016, respectively. According to the results of the research, it is suggested that the sesame sowing time in the Bursa ecological conditions be done in the first two weeks of May