- Selcuk Journal of Agriculture and Food Sciences
- Vol: 22 Issue: 46
- Determination of The Convenient Sowing Date for Spring Rapeseed Cultivars in Konya Conditions
Determination of The Convenient Sowing Date for Spring Rapeseed Cultivars in Konya Conditions
Authors : Özden Öztürk, Rahim Ada, Fikret Akinerdem
Pages : 6-17
View : 8 | Download : 6
Publication Date : 2008-12-25
Article Type : Research Article
Abstract :This research was carried out to determine the most suitable sowing time and the effects of different sowing dates on the yield and yield components of some spring rapeseed varieties under Konya conditions between 2004-2005. Three spring rapeseed varieties (Fantasio, Jura and Helios) and four different sowing dates (March 20, April 5, April 20 and May 5) were tested in the experiment. The experimental design was arranged as Split Plots in Randomized Complete Blocks with three replications. In this research plant height, brunch number in plant, pod number in plant, pod length, seed number in pod, 1000 seed weight, seed yield, oil ratio and oil yield were determined. According to the results, all the characters were significantly affected by the sowing times. It was found that there were significant differences between rapeseed cultivars all of investigated characters except number of branches per plant, pod number per plant and pod length were significant. According to the two-year results, seed yield and yield components are significantly affected by the sowing time being delayed. The highest seed yield and crude oil yield were determinated in April 5 (2279.0 kg ha-1 and 936.0 kg ha-1, respectively). April 20 and May 5 sowing times reduced the seed yield about 13 % and 25%, and crude oil yield about 17 % and 30 %, respectively as compared with April 5 sowing time. Among the cultivars, Fantasio has shown better performance both seed yield (2148.0 kg ha-1) and crude oil yield (836.0 kg ha-1).Keywords : Yazlık kolza, ekim zamanı, tohum verimi, yağ verimi, verim unsurları