DETERMINATION OF WATER USE EFFICIENCY AND NITROGEN UPTAKE AND ACCUMULATION IN TWO RAPESEED CULTIVARS (BRASSICA NAPUS L.)

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DANESHMAND A.R.; SHIRANI RAD A.H.; NOOR MOHAMMADI GH.; ZAREI GH.; DANESHIAN J.

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Journal: Year:2008 | Volume:13 | Issue:2 Page(s): 473-489

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Title

DETERMINATION OF WATER USE EFFICIENCY AND NITROGEN UPTAKE AND ACCUMULATION IN TWO RAPESEED CULTIVARS (BRASSICA NAPUS L.)

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Keywords

RAPESEEDQ2

DROUGHT STRESSQ2

NITROGENQ2

YIELDQ2

YIELD COMPONENTSQ2

WATER USE EFFICIENCYQ2

NITROGEN UTILITY EFFICIENCYQ3

Abstract

In order to determine the effects of water deficit and different NITROGEN rates on YIELD, WATER USE EFFICIENCY, NITROGEN gathering and uptake in RAPESEED, a field experiment was conducted using a factorial split-plot in randomized complete block design in 2005 growing season. In this study, two cultivars (Zarfam and Modena) in three water regimes (irrigation after 40, 60 and 80 percent depletion of soil water) and four NITROGEN rates (0, 75, 150 and 225 kg/ha) was studied. Results showed that increasing the NITROGEN rate from 0 to 220 kg/ha and increasment of soil water, caused to increase the total biomass production that this increase, accompained by increasing the seed YIELD. Increasing the seed YIELD, was related to increasing the pods in plant and number of seeds per pod in both conditions. With increasing the ntirgoen used and soil water, WATER USE EFFICIENCY (seed and total biomass) was increased, and the maximum rate of these efficiency, obtained from 220 kg Nand 40 percent depletion of soil water.Nitrogen gathering in all plant organs and NITROGEN uptake, increased with increasing NITROGEN and water times. In contrast, NITROGEN utility efficiency decreased with increasing NITROGEN used and decreasing soil water that finally improved the seed YIELD and total biomass. Zarfam had a higher ability NITROGEN uptake and mobilization under normal irrigation and severe DROUGHT STRESS conditions and also in higher and lower NITROGEN conditions and may produced higher seed YIELD.

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APA: Copy

DANESHMAND, A.R., SHIRANI RAD, A.H., NOOR MOHAMMADI, GH., ZAREI, GH., & DANESHIAN, J.. (2008). DETERMINATION OF WATER USE EFFICIENCY AND NITROGEN UPTAKE AND ACCUMULATION IN TWO RAPESEED CULTIVARS (BRASSICA NAPUS L.). JOURNAL OF AGRICULTURAL SCIENCES, 13(2), 473-489. SID. https://sid.ir/paper/7619/en

Vancouver: Copy

DANESHMAND A.R., SHIRANI RAD A.H., NOOR MOHAMMADI GH., ZAREI GH., DANESHIAN J.. DETERMINATION OF WATER USE EFFICIENCY AND NITROGEN UPTAKE AND ACCUMULATION IN TWO RAPESEED CULTIVARS (BRASSICA NAPUS L.). JOURNAL OF AGRICULTURAL SCIENCES[Internet]. 2008;13(2):473-489. Available from: https://sid.ir/paper/7619/en

IEEE: Copy

A.R. DANESHMAND, A.H. SHIRANI RAD, GH. NOOR MOHAMMADI, GH. ZAREI, and J. DANESHIAN, “DETERMINATION OF WATER USE EFFICIENCY AND NITROGEN UPTAKE AND ACCUMULATION IN TWO RAPESEED CULTIVARS (BRASSICA NAPUS L.),” JOURNAL OF AGRICULTURAL SCIENCES, vol. 13, no. 2, pp. 473–489, 2008, [Online]. Available: https://sid.ir/paper/7619/en

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