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Optimum rate of nitrogen application and seed rate for deteriorated wheat (Triticum aestivum L.)

Mosanaei, Hedieh, AjamNorozi, Hossien, Dadashi, Mohammad Reza, Faraji, Abolfazleh, Pessarakli, Mohammad
Journal of plant nutrition 2019 v.42 no.5 pp. 517-528
Triticum aestivum, accelerated aging, fertilizer rates, harvest index, nitrogen, nitrogen fertilizers, plant height, seed quality, seed yield, seeds, wheat, Iran
In order to study the effect of seed quality (SQ), seed rate (SR), and nitrogen rate (NR) on yield and yield components of wheat, an experiment was conducted as a factorial-split plot based on the randomized complete block design with four replications in Golestan Province, Iran. Treatments included the combination of SR and NR (recommended rate, 15 and 30% higher than the recommended rate) as the main plots, and SQ (control, 15, 30 and 45 h of accelerated aging) as the subplots. The interaction of NR × SR was significant on 1000-seed weight, seed yield, plant height, the number of seeds, biological yield, and harvest index. There was a significant reduction in all traits with an increase in seed aging. Seed yield had a significant and positive correlation with yield components. Using higher density and applying higher nitrogen fertilizer than those of recommended could reduce the negative effects of seed aging in wheat.