Influence of different levels of potassium on growth, yield and quality of canola (Brassica napus L.) cultivars
2012
Sattar, A. (University of Agriculture, Faisalabad (Pakistan). Dept. of Agronomy) | Cheema, M.A. (University of Agriculture, Faisalabad (Pakistan). Dept. of Agronomy) | Wahid, M.A. (University of Agriculture, Faisalabad (Pakistan). Dept. of Agronomy) | Rasul, F. | Saleem, M.F. | Areeb, A.
Potassium is one of the major nutrients whose deficiency decreased the growth and yield of canola. Current knowledge regarding K requirement of canola is limited. Thus the field study was carried out to assess the influence of different levels of K fertilization (0, 30, 60, 90,120 kg per ha) on two canola cultivars viz. Bulbul-98 and Zafar-2000. Results revealed that increasing rate of K enhanced leaf area index and crop growth rate in both cultivars. Highest seed yield (3067.24 kg per ha) was obtained when K was applied at 120 kg per ha. While minimum seed yield (2353.85 kg per ha) was recorded in case of control. Variety, Zafar-2000 produced more seed yield than Bulbul-98. Oil content progressively decreased with increase of K level with highest (42.46%) in case of control and lowest (39.25%) with a K level of 120 kg per ha. Similarly Zafar-2000 and Bulbul- 98 produced 40.80% and 41.04% oil contents, respectively. From these results, it is concluded that potassium application at the rate of 120 kg per ha increased the growth, yield, and oil quality of canola.
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