1. Ahmad, G., Jan, A., Arif, M., Jan, M. T., and Khattak, R. A. 2007. Influence of nitrogen and sulfur fertilization on quality of canola (Brassica napus L.) under rainfed conditions. Journal of Zhejiang University 8(10): 731-737.
2. Ali ehyaei, M., and Behbahanizade, A. A. 1993. Methods of soil analysis. Technical publication. Soil and Water Research Institute. Tehran. Iran. 1(893): 76PP. (in Persian).
3. Alyari, H., and Sekari, F. 2000. Oil seed crops agronomy and physiology.. Amidi Tabriz Press. 182 P.
4. Aminpanah, H. 2013. Effect of nitrogen rate on seed yield, protein and oil content of two canola (Brassica napus L.) cultivars. Acta Agriculturae Slovenica 101(2): 183-190.
5. Aynehband, A., Asadi, S., and Rahnama, A. 2014. Nitrogen use efficiency assessment under intra-and inter-specific competitions stress. Journal of Plant Physiology and Breeding 4(2): 9-21.
6. Aynehband, A. 2007. Ecology of agricultural systems. Shahid Chamran University of Ahvaz Press. 374 P.
7. Baligar, V.C., and Bennett, O.L., 1986. Outlook on fertilizer use efficiency in the tropics. Fertilizer Research 10: 83-96.
8. Dawson, J. C., Huggins, D. R., and Jones, S. S. 2008. Characterizing nitrogen use efficiency in natural and agricultural ecosystems to improve the performance of cereal crops in low-input and organic agriculture systems. Field Crops Research 107: 89-101.
9. Desta, Y., Habtegebrial, K., and Weldu, Y. 2015. Inoculation, phosphorous and zinc fertilization effects on nodulation, yield and nutrient uptake of Faba bean (Vicia faba L.) grown on calcaric cambisol of semiarid Ethiopia. Journal of Soil Science and Environmental Management 6(1): 9-15.
10. Dobermann, A., Witt, C., Abdulrachman, S., Gines, H.C., Nagarajan, R., Son, T.T., Tan, P.C., Wong, G.H., Chien, N.V., Thoma, V.T.K., Phung, C.V., Stalin, P., Muthukrishnan, P., Ravi, V., Babu, M., Simbahan, G.C., and dviento, M.A.A., 2003a .Soil fertility and indigenous nutrient supply in irrigated rice domains of Asia. Agronomy Journal 95: 913-922.
11. Erisman, J. W. 2004. The Nanjing declaration on management of reactive nitrogen. Bioscience 54: 4286-4287.
12. Fageria, N. K. 2009. The use of nutrients in crop plant. CRC Press, New York, 430 P.
13. Gan, Y., Malhi, S. S., Brandt, S., Katepa-Mupondwa, F., and Stevenson, C. 2008. Nitrogen use efficiency and n uptake of juncea canola under diverse environments. Agronomy Journal 100: 285-295.
14. Gerami, F., Aynehband, A., and Fateh, E. 2014. Comparing the effect of different green manure crops and nitrogen rates on wheat (Triticum aestivum L.) by nitrogen efficiency indices. The Plant Production 36 (4): 135-148. (in Persian with English abstract).
15. Ghavampoor, M., Moosavi, S. G. H., and Seghatoleslami, M. J. 2015. Yield, morphological traits and nitrogen use efficiency of Eruca sativa as affected by irrigation, plant density and nitrogen fertilization. Biological Forum- An International Journal 7(1): 316-325.
16. Haile, D., Nigussie, D., and Ayana, A. 2012. Nitrogen use efficiency of bread wheat: Effects of nitrogen rate and time of application. Journal of Soil Science and Plant Nutrition 12 (3): 389-409.
17. Halvorson, A. D., Wienhold, B. J., and Black, A. L. 2001. Tillage and nitrogen fertilization influence grain and soil nitrogen in an annual cropping system. Agronomy Journal 93: 836-841.
18. Hamzei, J. 2012. Seed N concentration, nitrogen use efficiency and growth of barley under combinations of bio and chemical N fertilizer application. International Research Journal of Applied and Basic Sciences 3 (1): 70-76.
19. Hocking, P. J., Randall, P. J., and DeMarco, D. 1997. The response of dryland canola to nitrogen fertilizer: partitioning and mobilization of dry matter and nitrogen, and nitrogen effects on yield components. Field Crops Research 54: 201-220.
20. Hosseini, R. S., Gashi, S., Soltani, A., Calateh, M., and Zahed, M. 2013. The effect of nitrogen fertilizer on wheat nitrogen use efficiency measures. Iranian Journal of Field Crops Research 11(2): 300-306. (in Persian).
21. Huggins, D. R., and Pan, W. L. 1993. Nitrogen efficiency component analysis: an evaluation of cropping system differences in productivity. Journal of Agronomy 85: 898-905.
22. Jackson, G. D. 2000. Effect of nitrogen and sulfur on canola yield and nutrient uptake. Agronomy 92: 644-649.
23. Jafari, N., Esfahani, M., Falah, A. R., Mohsen Abadi, G. R., and Kafi Ghasemi, A. 2012. Effects of urea, zinc sulphate fertilizers and Azotobacter and Azospirillum inoculant application on grain yield and nitrogen use efficiency of rapeseed (Brassica napus L.). Iranian Journal of Field Crop Science 43 (4): 551-560. (in Persian).
24. Jalali, A. H., and Bahrani, M. J. 2014. Effect of crop residue and nitrogen fertilizer on nitrogen use efficiency in corn (Zea mays L.) production. Agronomy Journal 102: 197-204.
25. Joudi, F., Tobeh, A., Ebadi, A., Mostafaee, H., and Jamaati-e-Somarin, S. H. 2011. Nitrogen effects on yield, yield components, agronomical and recovery nitrogen use efficiency in lentil genotypes. Electeronic Journal of Crop Prouduction 4 (4): 39-50.
26. Keivanrad, S., and Zandi, P. 2014. Effect of nitrogen levels on growth, yield and oil quality of Indian mustard grown under different plant densities. Agronomical and Qualitative Features of Indian Mustard 1(157): 81-95.
27. Ladha, J.K., Pathak, H., Krupnik, T.J., Six, J., and Kessel, C. 2005. Efficiency of fertilizer nitrogen in cereal production: retrospects and prospects. Advances in Agronomy 87: 85-156.
28. Majdi Nasab, H., Siadat, S. A., Naderi, A., Lak, S., and Modhej, A. 2015. Effect of drought stress and nitrogen levels on yield, yield components and harvest index of canola genotypes under Shoushtar environmental conditions. Journal of Renewable Natural Resources Bhutan 3 (5): 129-139.
29. Mirzaei, A., Vazan, S., and Naseri, R. 2010. Response of yield and yield components of safflower (Carthamus tinctorius L.) to seed inoculation with Azotobacter and Azospirillum and different nitrogen levels under dry land condition. World Applied Sciences Journal 11 (10): 1287-1291.
30. Mirzashahi, K., and Hossainpour, M. 2014. The effect of nitrogen fertilization management on grain yield and nitrogen efficiency indices in corn. Agronomy Journal 102: 31-40.
31. Mohammadi, G.H., Safari Poor, M., Ghobadi, M. E., and Najaphy, A. 2015. Corn yield and quality and weed growth under different nitrogen levels by application of legume and non-legume green manures. Sciences Agricultural and Sustainable Production 25(1): 45- 64. (in Persian with English abstract).
32. Muurinen, S., Kleemola, J., and Peltonen-Sainio, P. 2007. Accumulation and translocation of nitrogen in spring cereal cultivars differing in nitrogen use efficiency. Agronomy Journal 99: 441-449.
33. Naing, A., Banterng, P., Polthanee, A., and Trelo-Ges, V. 2010. The effect of different fertilizers management strategies on growth and yield of upland black glutinous rice and soil property. Asian Journal of Plant Sciences 9 (7): 414-422.
34. Norton, R., Walker, C., and Farlow, C. 2015. Nitrogen removal and use on a long-term fertilizer experiment. Australia. Web site www.agronomy2015.com.au.
35. Pankhurst, C. E., Stirling, G. R., Magarey, R.C., Blair, B.C., Holt, J.A., Bell, M.J. and Garside, A.L. 2005 Quantification of the effects of rotation breaks on soil biological properties and their impact on yield decline in sugarcane. Soil Biology and Biochemistry 37: 1121-1130.
36. Powers, L. E., and Mcsorley, R. 2000. Ecological principles of agriculture. Thomson Learning Publishing. New York.
37. Premi, O. P., Kandpal, B. K., Rathore Shekhawat, S. S., and Chauhan, J. S. 2013. Green manuring, mustard residue recycling and fertilizer application affects productivity and sustainability of Indian mustard (Brassica juncea L.) in Indian semi-arid tropics. Industrial Crops and Products 41: 423-429.
38. Rahimizadeh, M., Kashani, A., Zare-Feizabadi, A., Koocheki, A. R., and Nassiri-Mahallati, M. 2010. Nitrogen use efficiency of wheat as affected by preceding crop, application rate of nitrogen and crop residues. Australian Journal of Crop Science 4(5): 363-368.
39. Rathke, G. W., Behrens, T., and Diepenbrock, W. 2006. Integrated nitrogen management strategies to improve seed yield, oil content and nitrogen efficiency of winter oilseed rape (Brassica napus L.): A review. Agriculture, Ecosystem and Environment 117: 90-108.
40. Ryan, J., Pala, M., Masri, S., Singh, M., and Harris, H. 2008. Rain fed wheat-based rotations under Mediterranean conditions: Crop sequences, nitrogen fertilization, and stubble grazing in relation to grain and straw quality. European Agronomy Journal 28:112-118.
41. Seyed Sharifi, R. 2007. Industrial Plants. Mohaghegh Ardabili Press. 432 pp.
42. Seyed Sharifi, R., Seyedi, M. N., and Zaefizadeh, M. 2011. Influence of various levels of nitrogen fertilizer on grain yield and nitrogen use efficiency in canola (Brassica napus L.) cultivars. Journal of Crops Improvement 13(2): 51-60.
43. Shehu, H. E. 2014. Uptake and agronomic efficiencies of nitrogen, phosphorus and potassium in sesame (Sesamum indicum L.). American Journal of Plant Nutrition and Fertilization Technology 4(2): 41-56.
44. Silespour, M., Jafari, P., and Mollahosein, H. 2009. Effect of drought stress on corn. Journal of Agricultural Sciences 2(2): 32-39.
45. Yasari, E., and Patwardhan, M. 2007. Effects of Azotobacter and Azospirillum inoculants and chemical fertilizers on growth and productivity of canola (Brassica napus L.). Asian Journal of Plant Sciences 6(1): 77-82.
46. Zhao, R. F., Chen, X. P., Zhang, F. S., Zhang, H., Schroder, J., and Romheld, V. 2006. Fertilization and nitrogen balance in a wheat-maize rotation system in North China. Agronomy Journal 98: 935-945.