Efficacy of pre-emergence herbicides on the yield and yield components of canola
2003
Khan, I.A. | Hassan, G. (NWFP Agricultural Univ., Peshawar (Pakistan). Dept. of Weed Science) | Ihsanullah
The efficacy of pre-emergence herbicides on the yield and yield components of canola was studied. The herbicides included treflan 4EC at the rate of 1.20 kg, Dual Gold 960EC at the rate of 1.44 kg, Stomp 330EC at the rate 0.99 kg and Sencor WP70 at the rate of 0.35 kg a.i ha-1. The data were recorded on weed density m-2, days to 50% flowering, number of branches/plant, number of siliquae/plant, siliqua length (cm), days to maturity, plant height at maturity (cm), number of seeds/siliqua, 1000 seeds weight (g) and seed yield (kg ha-1). None of the herbicides except Sencor WP70 had a photoxic effect on the crop. Minimum weeds m-2 (2.8) were observed in plots to which was applied Treflan 4EC. Maximum weeds m-2 (19.3) were observed in weedy check plots. Number of branches/plant (15.32), number of siliquae/plant (616.4), siliqua length (8.1 cm), number of seeds/siliqua (29.1), 1000 seeds weight (3.77 g) and seed yield (1630 kg ha- 1) were maximum in plots, where treflan 4EC was applied.
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