TY - JOUR JF - JCPP JO - VL - 3 IS - 7 PY - 2013 Y1 - 2013/6/01 TI - Interaction of N Residues of Maize Cropping and N Fertilizer on Seed and Oil Yield of Rapeseed TT - برهمکنش بقایای نیتروژن کشت ذرت و کود نیتروژن بر عملکرد دانه و روغن کلزا N2 -   In order to determine the interaction of residual nitrogen (N) and different N rates on seed and oil yield of rapeseed, an experiment was conducted at Shahrekord University, Shahrekord, Iran, in 2008-2009 growing season. The experimental design was split plots arranged in randomized complete block design with three replications. Seven treatments of residual N (217, 435 and 652 kg/ha from urea fertilizer 6.1, 12.2 and 18.3 ton/ha from broiler litter and control: no-fertilizer) as main plots, and different levels of nitrogen (0, 60, 120 and 180 kg/ha N) as subplots were compared. Results showed that the highest number of seeds per pod and 1000-seed weight were obtained with residual N of 12.2 ton/ha as broiler litter of previous cropping. The applied N in rapeseed cropping resulted in a significant increase in number of seeds per pod, but oil content was significantly decreased. A significant interaction was observed between N residues of previous crop and applied N on number of pods per plant, seed yield and oil yield. The highest seed and oil yields were obtained with N residues of 12.2 ton/ha broiler litter and 120 kg/ha N in rapeseed cropping. In general, application of large amount of chemical fertilizer in maize cropping reduces the potential of rapeseed yield. However, application of broiler litter not only provides residual N for rapeseed, but also reduces fertilizer costs. SP - 25 EP - 36 AU - Fallah, S. AU - Yadavi, A. AD - Dept. of Agron., College of Agric., Shahrekord Univ., Shahrekord, Iran. KW - Broiler litter KW - Chemical fertilizer KW - Yield components. UR - http://jcpp.iut.ac.ir/article-1-1801-en.html ER -