Investigation of effect irrigation period and N-Fertilizer on yield of rapeseed (Brassica napus L. )

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Dashdi M.; Godarzi S.; ABDULAHI A.

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Journal: Environmental Stresses in Crop Sciences Year:2020 | Volume:13 | Issue:3 Page(s): 793-803

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Title

Investigation of effect irrigation period and N-Fertilizer on yield of rapeseed (Brassica napus L. )

Author(s)

Dashdi M. | Godarzi S. | ABDULAHI A. | Issue Writer Certificate

Keywords

CanolaQ2

Grain yieldQ2

NitrogenQ2

Oil seedQ2

Water stressQ2

Abstract

Regarding to importance of rapeseed for vegetable oil production, investigation of different production factors is nesesary. So this experiment conducted as split plot based on randomised complete block design with three replications durin two cropping seasons (2003 and 2004) in Broujerd Agricultural Research Station. Irrigation period was main plots with three levels: I1=50mm, I2=75mm and I3=100mm collective evaporation from pan A and urea rate with three levels: N1=112 kg. ha-1, N2=160 kg. ha-1 and N3=208 kg. ha-1 was subplot. Regent × Cobra cultivar of rapeseed was used. Results indicated that among irrigation treatments, the hieghst seed yield was related to I1 and I2 treatments with 3146 and 3164 kg. ha-1 respectively which was significantly different to I3 with 2684 kg. ha-1. The maximum number of seeds per pod and pod per plant were obtained by I1 treatment. The highest water use efficiency was obtained by I3 treatment with 0. 394 kg. m-3 which different was significant at probable level of 1%. Effect of Nitrogen on water use efficiency, seed yield, number of seed per pod, number of pod per plant, plant height and 1000 seed weight was significant. Among treatments of irrigation and N-fertilizer rates interaction, the most and lowest seed yield was obtained by I2N1 and I3N1 treatments with 3498 kg. ha-1 and 2401 kg. ha-1 respectively. Therefore, in order to increase the seed yield of rapeseed under Borujerd weather conditions, the recommended rate of Nitrogen is 0. 7 times of recommended rate by the Institute for Soil and water research and irrigation and irrigation intervals based on 75 mm cumulative is recommended.

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APA: Copy

Dashdi, M., Godarzi, S., & ABDULAHI, A.. (2020). Investigation of effect irrigation period and N-Fertilizer on yield of rapeseed (Brassica napus L. ). ENVIRONMENTAL STRESSES IN CROP SCIENCES, 13(3 ), 793-803. SID. https://sid.ir/paper/399456/en

Vancouver: Copy

Dashdi M., Godarzi S., ABDULAHI A.. Investigation of effect irrigation period and N-Fertilizer on yield of rapeseed (Brassica napus L. ). ENVIRONMENTAL STRESSES IN CROP SCIENCES[Internet]. 2020;13(3 ):793-803. Available from: https://sid.ir/paper/399456/en

IEEE: Copy

M. Dashdi, S. Godarzi, and A. ABDULAHI, “Investigation of effect irrigation period and N-Fertilizer on yield of rapeseed (Brassica napus L. ),” ENVIRONMENTAL STRESSES IN CROP SCIENCES, vol. 13, no. 3 , pp. 793–803, 2020, [Online]. Available: https://sid.ir/paper/399456/en

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