تاثیر نحوه مصرف سولفات روی بر خصوصیات رشدی گیاهچه‌های گندم نان و دوروم در خاک آهکی

Zinc is one of the essential micronutrients whose deficiency appears in early stages of plant growth. Zn deficiency is a worldwide nutritional constraint in crop production particularly in cereals growing on calcareous soils. In order to study the effects of different methods of application zinc sulfate (ZnSO4) on seedlings growth characteristics of wheat in a calcareous soil in pot experiment during 2013-2014 to factorial randomized complete block design with four replications in Faculty of Agriculture, Maragheh University, Maragheh, Iran. The first factor included three levels of applied Zinc intake control (non Zn application), soil application (5 mg Zn kg-1 soil) and spray seed (30% 1 Lit (water) for 10 kg seed) and the second factor included five wheat cultivars with two bread wheat (Triticum aestivum, cv. Gascogen and Azar-2) and three durum wheat (Triticum durum, cv. Zardak, Kunduru-1149 and Viya-2005). ANOVA results indicated that soil Zn application significantly increased seedling dry weight as well as seedling length. Dry matter production and seedling length was enhanced by Zn application about 8.7% and 12% in calcareous soil, respectively. Interact effect of cultivar × Zn application was significant (P<0.01) on seedling length. Results showed that dry matter production and seedling length was significant difference among cultivars. The results from experiment showed that durum wheat were more susceptible to Zn deficiency than the bread wheat. So, better in the early stages of seedling development, Zinc sulfate was used a soil until more efficiently than spraying seed.