Rahimian, M., Vaziri, J. (2009). Effects of Deficit Irrigation on Canola Yield and Water Use Efficiency. , 22(2), 251-255. doi: 10.22092/ijsr.2009.127008
M. H. Rahimian; J. Vaziri. "Effects of Deficit Irrigation on Canola Yield and Water Use Efficiency". , 22, 2, 2009, 251-255. doi: 10.22092/ijsr.2009.127008
Rahimian, M., Vaziri, J. (2009). 'Effects of Deficit Irrigation on Canola Yield and Water Use Efficiency', , 22(2), pp. 251-255. doi: 10.22092/ijsr.2009.127008
Rahimian, M., Vaziri, J. Effects of Deficit Irrigation on Canola Yield and Water Use Efficiency. , 2009; 22(2): 251-255. doi: 10.22092/ijsr.2009.127008

Effects of Deficit Irrigation on Canola Yield and Water Use Efficiency

پژوهش های خاک
Volume 22, Issue 2, February 2009, Pages 251-255    PDF (197.66 K)
Document Type: Research Paper
DOI: 10.22092/ijsr.2009.127008
Authors
M. H. Rahimian* 1; J. Vaziri2
1Researcher, Agricultural and Natural Resources Research Center of Khorasan
2Researcher, Soil and Water Research Institute
Abstract
In a RCB design , effects of deficit irrigation on Canola yield and water use efficiency (WUE) were investigated. Also phonologic stages sensitive to drought stress were determined at Mashhad Agricultural Research Station. Treatments included: I1= without irrigation. I2= irrigation at stem elongation, flower bud development, flowering and pod development stages. I3= irrigation at flower bud development, flowering, and pod development stages. I4= irrigation at stem elongation, flowering and pod development stages. I5= irrigation at flower bud development and pod development stages. I6= irrigation at flowering and pod development stages. Maximum grain yield (2837 kg.ha-1) was obtained from I4 treatment (Duncan’ test , α=0.05). Lowest yield was obtained in I1 treatment equal to 1746 kg.ha-1 .The same treatment also had the lowest percent of seed oil. Because of above-normal precipitation in the second and third year, I1 treatment had the highest water  use efficiency as 0.6 kg.m-3. According to our results, irrigating at stem elongation,  flowering , and pod  development is necessary for obtaining suitable yield and WUE.
Keywords
Deficit Irrigation; Water Stress; Water Use Efficiency; Canola
References
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  2. هاشمی دزفولی، ا.، ع. کوچکی و م. بنایان اول. 1374. افزایش عملکرد گیاهان زراعی. جهاد دانشگاهی. مشهد. شماره 120، صفحه 234ـ233.
  3. Hang, A.N. and G.C. Gilliland. 1991. Water requirement for winter rapeseed in central Washington. In: McGregor, D.I.(ed.) Proceedings of the Eighth International Rape seed Congress, Saskatoon, Canada.
  4. MacPherson, H., R. Scarth , S.R. Rimmer and P.B.E. Macvetty.1987. The effect of drought stress on yield determination in oilseed rape. In: Proceedings of the Seventh International Rapeseed congress, Poznan, Poland. The Plant Breeding and Acclimatizatoin Institute , Poznan, p.822-827.
  5. Mckenzie, R. H. 1996. Fertilizing irrigated grain and oilseed crops. Alberta Food and Rural Development, Edmonton, AB, Canada.
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