Evaluation of plant density and nitrogen fertilizer effects on yield, components, and seed protein percentage of durum wheat var. Aria

Subject Areas : crop production

مجتبي احمدی همزیان ¹ (دانشگاه آزاد اسلامی، واحد خوی، دانش آموخته کارشناسی ارشد زراعت، خوی، ایران)

Received: 2009-12-22 Accepted : 2011-10-30 Published : 2010-10-09

Keywords: Density - Durum wheat - Nitrogen - Protein percentage- Yield,

Abstract :

To evaluate the plant density and nitrogen fertilizer effects on yield, components, and percentage protein of Durum wheat var. Aria an experiment was carried out in south west of Khoy during 2007. Plant density in three levels (300, 400, 500 grain in m2) as the first factor and nitrogen fertilizer in five levels (0, 50, 100, 150, 200 kg per hectare) as the second factor. Result of variation analysis showed that except of leaf number and harvest index, plant density had meaningful effect on other traits. Comparison of the means showed that most grain yields by 659.2 grm-2 obtained in 500 plants per m2. The various levels of nitrogen fertilizer except of leaf number and harvest index had meaningful effect on other traits. The highest grain yield by 711.8 kgm-2 was obtained in 200 kg nitrogen fertilizer per hectare. The opposite effect of nitrogen density only had meaningful effect on protein percentage trait. The highest nitrogen percent (15/36) was obtained in 200 kg nitrogen per hectare by 300 plants per square meter density. There was a strongly correlation between grain yield by biological yield R2≤ 0.947 and between yield component. The rachis numbers by R2≤ 0.947 had most positive correlation by grain yield. By noticing results of this experiment, it is recognized that durum wheat var. Aria by 500 grain per m2 density and 200 kg nitrogen per hectare is recommendable for planting in the zone.

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