Effects of different nitrogen application rates and supplemental irrigation on agronomic characteristics and grain yield of bread wheat (Triticum aestivum L.) cultivars under rainfed conditions

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HOSSEINPOUR T.; RAHMATI M.; AHMADI A.; Doolatshah J.

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Journal: IRANIAN JOURNAL OF DRYLAND AGRICULTURE Year:2018 | Volume:7 | Issue:1 Page(s): 15-31

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Title

Effects of different nitrogen application rates and supplemental irrigation on agronomic characteristics and grain yield of bread wheat (Triticum aestivum L.) cultivars under rainfed conditions

Author(s)

HOSSEINPOUR T. | RAHMATI M. | AHMADI A. | Doolatshah J. | Issue Writer Certificate

Keywords

Supplemental irrigationQ3

rainfed conditionsQ2

optimum nitrogen applicationQ1

Abstract

This study was conducted to investigate the effects of optimum nitrogen application rates and Supplemental irrigation on agronomic characteristics and grain yield of bread wheat cultivars in Koohdash under rainfed conditions. The experiments were carried out split-split-plot in randomized complete block design arrangements from 2013-2015 cropping years. The irrigation treatments (rainfed, irrigation at planting, planting + flowering stages with rates of 50 mm), two cultivars (Karim and Koohdasht) and different nitrogen rates (0, 60 and 120 kg/ha) were arranged in main plots, sub-plots and sub-subplots, respectively. The results showed that grain yield, biological yield and number of spike/m2 were significantly increased, but there was not any significant difference between two levels of nitrogen application. Therefore, the most appropriate management of nitrogen application is 60 kg/ha, considering economic issues. Also, the Supplemental irrigation significantly increased grain yield, however no significant differences observed between irrigation treatments. Considering economic issues, it can be concluded that irrigation at planting was superior in comparison to rainfed and irrigation at planting + flowering stages. Although, the main effect of cultivar was not significant for traits, but Karim cultivar produced the highest grain yield under Supplemental irrigation at planting and nitrogen application of 60 kg/ha. Finally, it can be concluded that wheat grain yield can be improve using Supplemental irrigation management and nitrogen under rainfed conditions.

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APA: Copy

HOSSEINPOUR, T., RAHMATI, M., AHMADI, A., & Doolatshah, J.. (2018). Effects of different nitrogen application rates and supplemental irrigation on agronomic characteristics and grain yield of bread wheat (Triticum aestivum L.) cultivars under rainfed conditions. IRANIAN JOURNAL OF DRYLAND AGRICULTURE, 7(1 ), 15-31. SID. https://sid.ir/paper/407300/en

Vancouver: Copy

HOSSEINPOUR T., RAHMATI M., AHMADI A., Doolatshah J.. Effects of different nitrogen application rates and supplemental irrigation on agronomic characteristics and grain yield of bread wheat (Triticum aestivum L.) cultivars under rainfed conditions. IRANIAN JOURNAL OF DRYLAND AGRICULTURE[Internet]. 2018;7(1 ):15-31. Available from: https://sid.ir/paper/407300/en

IEEE: Copy

T. HOSSEINPOUR, M. RAHMATI, A. AHMADI, and J. Doolatshah, “Effects of different nitrogen application rates and supplemental irrigation on agronomic characteristics and grain yield of bread wheat (Triticum aestivum L.) cultivars under rainfed conditions,” IRANIAN JOURNAL OF DRYLAND AGRICULTURE, vol. 7, no. 1 , pp. 15–31, 2018, [Online]. Available: https://sid.ir/paper/407300/en

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