Determining the Optimum Seed Rate for Maximum Seed Yield in Canola (Brassica napus L.) cv. RGS۰۰۳

This study was conducted to determine the optimum seed rate for maximizing seed yield in winter canola (Brassica napus L.) cv. RGS۰۰۳. A two-year field experiment was carried out using a randomized complete block design with four replications. The treatments comprised three seed rates: ۵, ۷, and ۹ kg ha. Sowing was performed in late October, and during the growing season, phenological traits and final seed yield were recorded. Combined analysis of variance revealed that seed rate had a significant effect on seed yield (P < ۰.۰۱). The highest mean seed yield over the two years was obtained from the ۷ kg ha¹ treatment (۳۲۴۶ kg ha¯¹), whereas the lowest yield (۲۶۲۲ kg ha¹) was recorded for the ۹ kg ha¹ treatment. The year x seed rate interaction was also significant (P<۰.۰۱); in the second year, the ۷ kg ha¯¹ treatment produced the maximum yield (۳۳۵۳ kg ha¹), while in the first year, the ۹ kg ha¹ treatment gave the minimum yield (۲۲۸۷ kg ha). Based on these findings, the seed rate of ۷ kg ha¹ is recommended as the optimum rate for achieving maximum seed yield of canola cv. RGS۰۰۳.

کلیدواژه ها:

Brassica napus L. ، seed rate ، seed yield ، cv. RGS۰۰۳ ، optimum rate