نوع مقاله : مقاله پژوهشی
نویسنده
استادیار، گروه زراعت دانشگاه استان مرکزی، تخصص: زراعت. علایق: گلرنگ/کودهای زیستی/محرک های زیستی رشد گیاهی/ کودهای آلی
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسنده [English]
In order determine the the effect of method, rate and time of nitrogen (N) application on yield and yield components of winter safflower in Arak, this study was carried out in growing season of 2011 at Research field of Payaam Nour Arak University, Markazi province, Arak, Iran. A factorial arrangement design was used in a randomized complete blocks design with three replications. Treatments were time of N application [(half at planting date and half at rosette growing stage), (half at rosette growing stage and half at stem elongation growing stage ) and (half at stem elongation and half at capitalum stage), N rates (150 and 300 kg ha-1 as urea) and method of application (mixing with soil, applied in irrigation water and foliar application) were assigned in plots. The highest (1590 kg ha-1) and lowest (1037 kg ha-1) of seed yield obtained with application of half of urea at sowing time and the other half at rossete growing stage with 300 kg ha-1urea mixing with soil), and50% of urea at sowing time and half at rossete growing stage with 150 kg ha-1 of urea mixing with irrigation water), respectively.
کلیدواژهها [English]
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