Study the response of bread wheat (Triticum eastivum L.) cultivars to seeding rate and different amounts of nitrogen

Subject Areas : agronomy

masoumah shabouti ¹ (ِDep. of Agronomy, Khouzestan Science and Research Branch, Islamic Azad University, Ahvaz, Iran)
Abdolkarim Banisaidi ² (Department of Agronomy and Plant Breeding, Faculty of Agriculture, Islamic Azad University, Shoushtar Branch, Shoushtar, Iran)
Adel Modhej ³ (گروه زراعت و اصلاح نباتات، دانشکده کشاورزی، دانشگاه آزاد اسلامی واحد شوشتر، شوشتر، ایران)

Received: 2022-10-23 Accepted : 2022-12-06 Published : 2023-01-21

Keywords: Grain yield, nitrogen, Wheat, Variety, Seed density,

Abstract :

Study the response of bread wheat (Triticum eastivum L.) cultivars to seeding rate and different amounts of nitrogen, this research was carried out in the research farm of the Shushtar Faculty of Agriculture in the form of a factorial split plot in the form of a block design. Complete random run. Three nitrogen fertilizer levels of 90, 140, 190 kg of pure nitrogen per hectare were considered as the main plot. Four densities of 400, 500, 600, 700 seeds per square meter were placed as the first factor and two varieties of Kavir and Chamran as the second factor were placed in sub-plots. The results showed that nitrogen fertilizer had a significant effect on all studied traits except the harvest index. Increasing seed density increased plant height, number of seeds per square meter, number of spikes per square meter, number of seeds per spike, seed yield, biological yield and harvest index, but the number of fertile tillers and 1000 seed weight decreased with increasing seed density. The interaction effect of nitrogen, plant density and variety on all studied traits except the number of seeds per spike was significant. In general, the results showed that the Chamran variety had the highest seed yield at a density of 500 seeds per square meter and 190 kilograms of nitrogen per hectare with the production of 656 grams of seeds per hectare.