بررسی عناصر روی و منیزیم بر خصوصیات زراعی و جوانه‌زنی بذر گندم نان (Triticum aestivum L. cv. Sivand)

In order to study the effect of zinc and magnesium on agronomic and seed germination traits of wheat (Sivand cultivar), the current study was carried out at Mahidasht Agricultural Research Station in Kermanshah over the years 2012 and 2013. The experiment was conducted as factorial based on completely randomized block design with three replications. The treatments consisted of four levels of zinc sulfate (zero, 20, 40 and 60 kg per hectare) and four levels of magnesium (zero, 70, 140 and 210 kg per hectare in the form of magnesium sulfate). The measured parameters included thousand seed weight, hectoliter weight, protein, zinc and magnesium seeds, germination test, growth rate, seed vigor, plant characteristics and grain yield. The results showed the effects of zinc and magnesium factors were significant for most traits at 1 and 5%. The effect of zinc sulfate showed that 60 kg zinc sulfate had the best effect on the traits under investigation. The effect of this treatment on two important traits (i.e., yield and grain protein percent) with 7.10 tons per hectare and 12.05% was higher (about 115 and 103%, respectively), as compared with the control treatment. Effect of magnesium sulfate levels on the traits showed that the treatment of 210 kg per hectare of magnesium sulfate was the superior treatment. The effects of the above-mentioned treatment on yield (7.84 tons per hectare) and grain protein (11.89 percent) were higher than the control treatment, which was 124 and 101.5%, respectively. Given the number of field nutrients and the wheat needs for these elements, the treatments of 20 kg per ha of zinc sulfate and 140 kg per ha of magnesium sulfate were better than other treatments and economically speaking, are very cost-effective and are thus recommended.