Response of Winter Wheat Growth and Yield to Planting Date and Nitrogen Application Rate
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Article Type:
Research/Original Article (دارای رتبه معتبر)
Abstract:

The aim of this study was to investigate the interaction between planting date and the nitrogen application rate on the growth and yield of winter wheat in Torbat-e-Jam, Khorasan Razavi province. The field experiment was conducted in a randomized block design with split plot arrangements and three replications in Torbat-e-Jam, in the 2019-2020. Experimental treatments included three planting dates: 1 October, 17 October and 2 November as the main plot, and nitrogen fertilizer at levels 0 (as a control), 100, 125, 150, 175 and 200 kg nitrogen ha-1 as a subplot. Pishtaz cultivar was planted in experimental plots which included 7 planting lines with a row spacing of 15 cm and a length of 8 m. The results of the analysis of variance showed that planting date and nitrogen fertilizer application and their interaction had a significant effect on all measured traits. The results showed that the yield and yield components were the highest on 1 October, and the values of most of these traits showed a significant decrease in planting on 12 November compared to 10 October. The highest grain yield was obtained from a nitrogen application rate of 200 kg ha-1 on 1 October and 16 October, while the maximum yield was obtained with an application rate of 175 kg ha-1 on 2 November. The growth and yield response of wheat to the rate of nitrogen application decreased with a delay in planting date, and the option of planting date must be considered in order to recommend efficient fertilizer usage.

Language:
Persian
Published:
Journal of Crop Improvment, Volume:25 Issue: 2, 2023
Pages:
405 to 418
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