Evaluation Planting Date on Agronomical Traits of Canola (Brassica napus L.)

ABSTRACT: The production of oil seed in Iran is not high, about 80% of Iranʹs necessary oil is imported from foreign countries planting dates obviously affect canola yield and yield components. Experiments were conducted at the Agricultural Farm Station of Karaj, Iran in years (2009-2010) during autumn seasons to find out optimum planting time for the rapeseed Opera cultivar in the Karaj of Iran. There were five planting dates in September 15, September 25, October 10, October 20 and October 30. Dates of sowing significantly influenced the plant height, seed yield, and oil yield the rapeseed in two years. The maximum seed yields (2.19 t.ha-1) were obtained from the 25 September planting and it was significantly different from all other planting dates in 2009-2010 year. The lowest seed yields were found from 25 Oct (2009-2010) .