Growth and yield attributes of canola varieties under different seed rates

Abstract

A field experiment was conducted at Bacha Khan University Agricultural Research Farm, Bacha Khan University Charsadda, during winter-2015 to determine the growth and yield attributes of canola varieties under different seed rates. Four seed rates (4, 6, 8 and 10 kg ha -1 ) and two varieties (Durr-e-NIFA and Zahoor Swati) were tested in the experiment. The experiment was laid out in a randomized complete block design with three replications. Net plot size was 3m x 2m having 5 rows with row to row distance of 40cm. Recommended dose of NP (60 & 75 kg ha -1 ) was applied. All the P was applied at sowing time while N was applied in split doses (Half at the time of sowing and the remaining half in first irrigation). All other agronomic practices were equally maintained for all plots. The results showed that maximum emergence m -2 (97), days to maturity (165), plant height (149 cm), biological yield (3709 kg ha -1 ) and grain yield (2170 kg ha -1 ) was produced at seed rate of 10 kg ha -1 . Maximum 1000-grains weight (3.92 g) was produced at the seed rate of 4 kg ha -1 . Maximum emergence m -2 (82) was recorded for the variety Zahoor Swati. The variety Durr-e-NIFA produced maximum plant height (145 cm) and 1000-grains weight (3.69 g). Biological yield (3751 kg ha -1 ) and grain yield (2228 kg ha -1 ) increased with increasing seed rate from 4 to 10 kg ha -1 in case of Durr-e-NIFA variety.