Abreu JPD, Folres I, De Abreu FMG and Medeira MV. 1993. Nitrogen uptake in relation to water availability in wheat. Plant and Soil, 154(1): 89-96.
Ahmadi M, and Bahrani MJ. 2009. Yield and yield components of rapeseed as influenced by water stress at different growth stages and nitrogen levels. American-Eurasian Journal, Agriculture & Environment Science, 5(6): 755-761.
Albarrak KhM. 2006. Irrigation Interval and nitrogen level effects on growth and yield of Canola (Brassica napus L.). Science Journal, King Faisal University. 7: 87-99.
Barbieri PA, Echeverría EH, Rozas HRS and Andrade FH. 2008. Nitrogen use efficiency in maize as affected by nitrogen availability and row spacing. Agronomy Journal, 100:1094–1100.
Chamorro AM, Tamagno LN, Bezus R and Sarandon SJ. 2002. Nitrogen accumulation, partitioning and nitrogen–use efficiency in canola under different nitrogen availabilities. Soil Science and Plant Analysis, 33 (3-4): 493-504.
Craswell, ET and Godwin DC. 1984. The efficiency of nitrogen fertilizers applied to cereals in different climates, PP. 1-55. In: P.B. Tinker and A. Lauchli (end). Advances in Plant Nutrition. Vol. 1. Praeger Scientific, New York.
Daneshmand AR, Shirani Rad AH, Nour Mohammadi G, Zareei GH and Daneshian J. 2008. Effect of water deficit and different nitrogen rates on yield, yield components and physiological traits of two rapeseed (Brassica napus L.) cultivars. Journal of Agricultural Science and Natural Resources, 15(2), 99–112. (In Persian).
Diepenbrock W. 2000. Yield analysis of winter oilseed rape. Field Crop Research, 67: 35-49.
Dobermann A. 2005. Nitrogen use efficiency-state of the art. IFA International workshop on enhanced-efficiency fertilizers Frankfurt, Germany.
FAOSTAT .2016. http://Faostat.fao.org
Gan Y, Malhi SS, Brandt S, Katepa-Mupondwa F and Stevenson C. 2008. Nitrogen use efficiency and nitrogen uptake of Jancea canola under diverse environments. Agronomy Journal, 100: 285-295.
Fan X, Lin F and Kumar D. 2004. Fertilization with a new type of coated urea evaluation for nitrogen efficiency and yield in winter wheat. Journal of Plant Nutrition, 25: 853-865.
Fanaei H, Galoy M, Kafi M, Ghanbari Banjar A, and Shirani Rad, AH. 2009. Effect of potassium fertilizer application and irrigation water on grain yield and water use efficiency in two species of rapeseed (Brassica napus L.) and Indian mustard (Brassica juncea L.). Journal of Agricultural Sciences of Iran, 11(3): 289-271.
Hamzei J, Najafi H and Babaie M. 2015. Effect of Irrigation and Nitrogen on Agronomic Parameters, Yield, Grain Quality and Nitrogen Efficiency in Sunflower. Iranian Journal of Agricultural Research, 14(4): 698-686. (In Persian).
Huggins DR and Pan WL. 1993. Nitrogen efficiency components analysis: an evaluation of cropping system differences in productivity. Agronomy Journal, 85(4): 898- 905.
Jackson ML. 1958. Soil chemical analysis, Prentice Hall Inc, Englewood Cliffs, New Jersey. USA. pp: 498.
Jackson GD, Kushnak GD, Welty LE, Westcott MP and Wichman DM. 1993. Fertilizing canola. Montana Agresearch ,10(2): 21-24.
Jackson GD. 2000. Effects of Nitrogen and Sulfur on Canola Yield and Nutrient Uptake. Agronomy Journal. 92:644-649.
Johnston AM, Tanaka DL, Miller PR, Brandt SA, Nielsen DC, Lafond GP and Riveland NR. 2002. Oilseed crops for semiarid cropping systems in the Northern Great Plains. Agronomy Journal, 94: 231-240.
Kafi M, Zand A, Kamkar B, Sharifi H and Goldani M. 2000. Plant physiology (translation). Publications University of Mashhad. (In Persian).
Lopez-Bellido RJ and Lopez-Bellido L. 2001. Efficiency of nitrogen in wheat under Mediterranean conditions: effect of tillage, crop rotation and N fertilization. Field Crop Research. 71: 31-46.
Mojadam, M. 2008. Effects of water deficit stress and nitrogen management on dry matter distribution and some morphological characteristics of corn. Journal of Environmental Stresses in Plant Science 1(2): 123-136.
Pasban Islam BMR, Shakiba MR, Neishabouri M, Moghadam and Ahmadi MR. 2001. Effects of water deficit stress on quantitative and qualitative characteristics of rapeseed. Journal of Agricultural Science, 10(4): 78-75. (In Persian).
Prihar SS, Gajri PR, Benbi DK and Arora VK. 2003. Intensive Cropping. International Book Distributing Co.
Qaderi MM, Kurepin M, Leonid V and David R. 2006. Growth and physiological responses of canola (Brassica napus) to three components of global climate change: temperature, carbon dioxide and Drought. Physiologia Plantarum, 4: 710-721.
Rathke GW, Christen O and Diepenbrok W. 2005. Effect of nitrogen source and rate on productivity and quality of winter oilseed rape (Brassica napus L.) grown in different crop rotations. Field Crop Research. 94 (2-3): 103-113.
Richards RA, and Thurling N. 1978. Variation between and within species of rapeseed (Brassica napus and B.compestris), in response to drought stress. II. Growth and development under natural drought stress. Australian Journal of Agricultural Research. 29: 479-490.
Sinaki J, Majidi Heravan ME, Shirani Rad, AH, Noormohammadi GH and Zarei GH. 2007. The effects of water deficit during growth stages of canola (Brassica napus L.). American-Eurasian Journal of Agriculture & Environmental Science, 2: 417- 422.
Tohidi MHR, Shirani Rad AH, Nour-Mohammadi G, Habibi D, Modarres-anavy SAM, Mashhadi Akbar Boojar M, Dolatabadian A. 2009. Response of six oil seed rape genotype to water stress and hydrogel application. Pesquisa Agropecuária Tropical. 3: 243-250.
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