Effectcs of Levels and Methods Zinc Sulfate Application on Yield and Oil of Canola
2011
Mousavifazl, Seyed Mohammad Hadi | Jafarnegadi, Alireza
Better understanding of nutritional requirements of oil seed crops, particularly rape seed is now considered essential because of their growing coverage as well as zinc functions and implications for oil seed crop yield especially in lime soils. In order to study quantitative and qualitative responses of rape seed to different zinc dosages and application methods, an experiment was carried out under completely randomized blocks design in form of split plots at four replications in Shavoor experimental station during 2006-2008. Major plots were treated with foliage-applied zinc sulphate solution (prepared at 3:1000 v/w) and without spraying the solution; minor plots, however, were treated with soil-applied zinc sulphate powder at 0, 40, and 80kg/ha. The results indicated that spraying, itself, did not affect growth indices and yield parameters significantly. Soil-applied dosages considerably affected number of capsules per plant and oil content. Also, the results revealed significant effects of dosage-application method interaction on grain yield, oil content and yield, and number of capsules per plant and number of seeds per capsule. The highest yield value, 2144kg/ha, as well as the highest oil yield value, 895kg/ha, were obtained with soil-applied 40kg/ha zincs sulphate treatment.
显示更多 [+] 显示较少 [-]