- Selcuk Journal of Agriculture and Food Sciences
- Vol: 22 Issue: 44
- The Effects of Different Sowing Dates on The Yield, Yield Components and Quality of Some Winter Rape...
The Effects of Different Sowing Dates on The Yield, Yield Components and Quality of Some Winter Rapeseed Varieties Under Aegean Region Condition
Authors : Müjde Beğbağa, Özden Öztürk
Pages : 84-98
View : 8 | Download : 9
Publication Date : 2008-04-25
Article Type : Research Article
Abstract :This research was carried out in order to decide the effects of five different sowing dates (October 10, October 25, November 10, November 25 and December 10) on the yield, yield components and quality of four winter rapeseed varieties (Capitol, Bristol, Licord, Licrown) under İzmir ecological conditions. The experiment was designed according to the ‘’Split Plots on Randomized Complete Block” with three replications. In this research, four different sowing dates were taken into consideration because of bad weather conditions in the last sowing time (December 10). In this research, seed yield, crude oil and crude protein yield and their ratios, plant height, number of lateral branches on the main stem, number of pods per plant, pod lenght, seed number per pod and thousand seed weight were determinated and phenological characteristics as ratio of winter survival were investigated. At the end of the research, there were found statistically significant differences between the sowing dates for all of the studied characteristics. Ac-cording to the average values, the highest seed yield (65.61 kg ha-1-) was obtained from Licord at October 10, and the highest crude oil yield was determinated from Licord and Capitol at October 10 (respectively 23.89 kg ha-1 ve 24.00 kg ha-1). In general, delayed sowing date resulted in decreased seed and crude oil yield. It was found that crude protein and crude oil contents were affected differentially by various sowing dates, with delayed sowings decreased crude oil content while protein content contrarily increased. The highest crude oil ratio (39.93 %) was obtained from Bristol at October 25, the highest crude protein ratio (24.87 % and 24.93 %) was determinated from Capitol and Licord at November 25. The ratio of winter survival was known the most important characteristics in winter rapeseed agronomy. In this research, it was found that ratio of winter survival was decreased with delayed sowing dates.Keywords : Kışlık Kolza, Ekim Zamanı, Verim, Verim Unsurları, Kalite