Effects of sulphur on seed yield, oil, protein and glucosinolates of canola cultivars
2007
Fayyas-ul-Hassan (University of Arid Agriculture, Rawalpindi (Pakistan). Dept. of Agronomy) | Manaf, A. (University of Arid Agriculture, Rawalpindi (Pakistan)) | Qadir, G. (University of Arid Agriculture, Rawalpindi (Pakistan)) | Basra, S.M.A. (University of Agriculture, Faisalabad (Pakistan) Dept. of Crop Physiology))
Sulphur is the fourth major nutrient in crop production. Most crops require as much sulphur as phosphorus. Canola cultivars has recent introduction in Pakistan's agriculture so information related to sulphur effects on seed yield and seed composition are scanty. A two year study (2003-04 & 2004-05) was conducted to document the effects of sulphur application on seed yield, oil, protein and glucosinolates of canola cultivars. Two canola cultivars and four sulphur levels were arranged in randomized complete design with split plot arrangement. Cultivars exhibited statistically significant variations for protein but non-significant differences for seed yield, oil, protein and glucosinolates. Similarly, sulphur effects on seed yield, oil, protein and glucosinolates were neither significant nor consistent. However, interactive effects were observed to be significant. Seed yield, protein and glucosinolates increased during second year as compared to those observed during first year, whereas oil content exhibited an opposite trend and decreased during second year as compared to first year. Inverse relationship was observed between oil and protein during both the years of experiments. However, glucosinolates exhibited linear relationship to sulphur levels but did not show any significant relationship with seed yield.
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