Published in Scientific Papers. Series A. Agronomy, Vol. LVIII
Written by Abbas FALLAH TOOSI

Planting date is an important factor affecting crop yield, yield components and quality, especially in coldregions. In order to elucidate the effect of sowing dates on the yield and yield components of six winteroilseed rape (Brassica napus L.) varieties, an experiment was conducted in Mashhad. A split plot layoutwithin randomized complete block design with four replications was used in the experimentation. Foursowing dates consider as main plots, consist September 6th, September 21st, October 6th and October 21st andsix winter rapeseed varieties (Fornax, Okapi, Colvert, Talayeh, SLM046 and Orient) were in the subplots.Variables including plant height, seed yield, LAI, CGR, NAR, TDM and HI were measured. Results showedsowing time significantly affected on TDM, LAI, CGR, plant height, seed yield and HI and they improved byearly sowing dates. The most suitable varieties were Fornax and Colvert respectively.

[Read full article] [Citation]

SPUPOPUPNO1