Sadri, A., Habibi, D., Kamali, H., Eskandari Torbaghan, M. (2008) ‘The effect of different planting dates and application of ammonium sulphate on yield and yield components of Hyola rapeseed cultivar on winter planting in Mane and Samalghan’, New Finding in Agriculture, 2(8), pp. 376-386. doi: