Interactive effects of irrigation water salinity and urea fertilizer on wheat (Triticum aestivum L. ) yield and yield components

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KARIMI M.

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Journal: Environmental Stresses in Crop Sciences Year:2020 | Volume:13 | Issue:3 Page(s): 937-951

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Title

Interactive effects of irrigation water salinity and urea fertilizer on wheat (Triticum aestivum L. ) yield and yield components

Author(s)

KARIMI M. | Issue Writer Certificate

Keywords

Calcareous soilQ1

Fertilizer requirementQ2

Wheat productionQ1

YazdQ3

Abstract

The present field experiment was aimed to elucidate the response of Bam wheat cultivar (Triticum aestivum L. ) to urea application rates (0, 100, 200, 300 and 400 kg ha-1) at three irrigation water salinity levels (ECiw= 1. 88, 7. 22 and 14. 16 dS. m-1) at Sadooq salinity research station located in Yazd province in central Iran. The treatments arranged in a randomized complete block design in the form of split plot with three repelications. The results showed that urea application is necessary for improving wheat yield at all irrigation water salinity levels. Wheat response to nitrogen fertilizer was similar for all salinity levels and followed second order equation. Indicating the lower efficiency of urea at higher irrigation water salinity levels, with increasing salinity levels the grain yield increase due to urea application occured at a slower rate. In addition, the results showed that while increasing irrigation water salinity level from 1. 88 to 7. 22 dS. m-1 was not affected wheat yield significantly, the nitrogen requirement decreased from 400 to 300 kg ha-1 urea. Moreover, with increasing salinity levels to 16. 14 dS. m-1, wheat grain yiled significantly decreased to 3. 6 t ha-1 and urea requirement decreased to 260 kg ha-1. In conclusion, application of 300 kg ha-1 urea for production of 4. 5 t ha-1 wheat grain yield using irrigatin water with ECiw of 1. 88 to 7. 22 dS. m-1 is needed. However, 260 kg ha-1 urea is enough for production of 3. 6 t ha-1 wheat grain yield using irrigation water salinity of 16. 14 dS. m-1.

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APA: Copy

KARIMI, M.. (2020). Interactive effects of irrigation water salinity and urea fertilizer on wheat (Triticum aestivum L. ) yield and yield components. ENVIRONMENTAL STRESSES IN CROP SCIENCES, 13(3 ), 937-951. SID. https://sid.ir/paper/386346/en

Vancouver: Copy

KARIMI M.. Interactive effects of irrigation water salinity and urea fertilizer on wheat (Triticum aestivum L. ) yield and yield components. ENVIRONMENTAL STRESSES IN CROP SCIENCES[Internet]. 2020;13(3 ):937-951. Available from: https://sid.ir/paper/386346/en

IEEE: Copy

M. KARIMI, “Interactive effects of irrigation water salinity and urea fertilizer on wheat (Triticum aestivum L. ) yield and yield components,” ENVIRONMENTAL STRESSES IN CROP SCIENCES, vol. 13, no. 3 , pp. 937–951, 2020, [Online]. Available: https://sid.ir/paper/386346/en

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