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Jafarnejadi, A. (2005). Effects of Sources and Rates of Nitrogen on Yield and Quality of Canola. , 19(1), 35-41. doi: 10.22092/ijsr.2005.127273
A R. Jafarnejadi. "Effects of Sources and Rates of Nitrogen on Yield and Quality of Canola". , 19, 1, 2005, 35-41. doi: 10.22092/ijsr.2005.127273
Jafarnejadi, A. (2005). 'Effects of Sources and Rates of Nitrogen on Yield and Quality of Canola', , 19(1), pp. 35-41. doi: 10.22092/ijsr.2005.127273
Jafarnejadi, A. Effects of Sources and Rates of Nitrogen on Yield and Quality of Canola. , 2005; 19(1): 35-41. doi: 10.22092/ijsr.2005.127273

Effects of Sources and Rates of Nitrogen on Yield and Quality of Canola

پژوهش های خاک
Volume 19, Issue 1, May 2005, Pages 35-41    PDF (359.97 K)
Document Type: Research Paper
DOI: 10.22092/ijsr.2005.127273
Author
A R. Jafarnejadi*
Researcher, Khuzestan Agricultural and Natural Resources Research Center
Abstract
Canola, like, other crops has specific nutritional requirements. By identifying and meeting such requirements, we can increase the yield and quality of this important crop. A randomized complete block factorial experiment with 15 treatments and 3 replications was conducted at Shavoor Agricultural Research Station of Khuzestan to determine the best rates and sources of nitrogen fertilizer with respect to canola yield and quality. The treatments included five rates of nitrogen (0, 60, 120, 180, and 240 kg/ha) and three sources of nitrogen fertilizer (urea, ammonium nitrate, and ammonium sulfate). Analysis of variance of data on canola yield and per cent oil showed that nitrogen rates significantly (  = 0.01) affected the yield and oil content so that the highest yield of 2.5 tons/ha was obtained with 240 kg N/ha, but the increasing rates of nitrogen reduced per cent oil even though the total oil yield increased; more specifically, the highest oil yields of 1070, and 1153 kg per hectare were obtained with 180 and 240 kg N per hectare, respectively, as compared with the lowest yields of 325 kg/ha from the control tests. Nitrogen sources also significantly affected (  =0.05) the yield but not the yield components. Ammonium nitrate and sulfate were in the same group and urea in a different group with respect to yield improvement. Interactive effects of rates and sources of nitrogen on canola seed yield was found to be significant ( =0.05) so that the highest yield of 3 tons/ha was obtained with 240 kg N/ha as ammonium nitrate. The interaction of years, rates and sources on yields and oil contents were found to be statistically insignificant.
Keywords
Nitrogen sources; Nitrogen rates; Yield; Oil percent; Canola
References
  1. خادمی، زهرا، محمدجعفر ملکوتی، حامد رضائی و پرویز مهاجر میلانی. 1379. تغذیه بهینه کلزا گامی مؤثر در افزایش عملکرد و بهبود روغن و توصیه کودی برای تولیدکنندگان کلزا درخاکهای کشور، نشر آموزش کشاورزی، کرج، تهران.-ملکوتی، محمدجعفر. 1379.  کشاورزی پایدار و افزایش عملکرد، بهینه‌سازی مصرف کود در ایران. چاپ دوم، نشر آموزش کشاورزی، کرج، تهران.
  2. میرزاشاهی، کامران و همکاران. 1379. تعیین مناسبترین میزان و روش مصرف ( تقسیط ) ازت در زراعت کلزا در صفی‌آباد، ویژه‌نامه کلزا، مجله خاک و آب، جلد 12، شماره 12، مؤسسه تحقیقات خاک و آب، تهران، ایران.
  3. نرم افزار آماری رایانه ای MSTAT-C
  4. Almond, J. A ., Dawkins, T.C.K. and Askew. M F. 1986. Aspect of crop husbandry. In: Scarisbrick, D. H. and Danids, R .W. (eds.) Oil Seed Rape. Collins, London, PP. 127-175.
  5. Asare, E and Scarisbrick , D. H .1995 .Rate of nitrogen and sulphur Fertilizers on yield, yield components and seed quality of oil seed rape. Field cropsResearch, Ghana, 44: 1, 41-46 .
  6. Bernardi, A.L. and Banks, L.W. 1993. Petiole nitrate nitrogen: Is it a good indicator of yield potential in irrigated canola ? Research Assembly on Brassica, Wagga, New south Wales, PP-51-56 .
  7. Bilsborrow, P. E ., Evans, E. J. and Zhoo, F. J. 1993. The influence of spring nitrogen on yield, yield components and glucosinotate content of autum-sown, oilseed rape, Journal of Agri., Science, Cambridge, 120: 214-224.
  8. Chauhan, A . K., Singh Mahak ,K. S, Dadhwal and Singh , M . 1992. Effect of nitrogen level and row spacing on the performance of rape. Indian J. of Agron. India, 37 : 4 , 851-853 .
  9. Hocking, P J. and Mason , L. Accumulation, distribution and redistribution of dry matter and mineral nutrients in fruits of canola and the effects of nitrogen fertilizer and windrowing. Australian, Journal of Agriculture Research, Australia, 44: 6 , 1377-1388.
  10. Hocking, P. and Stapper, M. 1993. Effects of sowing and nitrogen fertilizer rate on growth, yield and nitrogen accumulation of canola, mustard and wheat. In : Warthen, N. and Mailer, R. J. ( eds ) Proccedings Ninth Australian Research Assembly on Brassicas. Wagga Wagga,  New South. Wales,  PP . 33 .
  11. Ibrahim, A. F, Abusteit ,E. O. and Metwall, E. M .A , E. L . Response, of rape seed growth, yield oil content and its fatty acids to nitrogen rates and application times, Journal of Agronomy and crop Science. Egypt, 162 : 2 , 107-112 .
  12. Jang, Y. S., Bang , J. K. , Kim, S. K., Park , C. B., Rho, S. P., Lee, J. I. and Kim ,Y. S. Seed yield and oil content of rape as affected by increased application of nitrogen in spring transplant system. Research Reports of the Rural Development Administration, Crops, Korea Republic. 29 : 20 , 162 – 171 .
  13. Jasinska, Z., W., Malarz, W., Budzunski and Tobola , 1993. Effect of the method of applying nitrogen fertilizer in spring on the yield of winter rape. Postepy– Nauk – Roluiczuck, Poland,  40-45 : 6 , 33-40 .
  14. Kimber, D. and. McGregor, D. I 1995. Brassica oil seeds, roduction and utilization. CAB International. U K .
  15. Ramsey, B. R. and Callinan , A .P. L.1994. Effects of nitrogen fertiliser on canola production in north central Victoria. Australian Journal of Experimental Agriculture. 34 : 6 , 789-796 .
  16. Taylor, A. J., Smith , C. J and Wilson , I B. 1991. Effects of irrigation and nitrogen fertilizer on yield oil content, nitrogen accamulation and water use of canola. Fertilizer Research. Australia, 29 : 3 , 249-260 .
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