Evaluation Seed Yield, Its Components and Protein Concentration of Wheat in Response to Different level of Nitrogen and Vermicompost

BACKGROUND: Management of nutrients, especially nitrogen, in order to have economic production, maintain sustainable agriculture and provide food security, is considered to have an important priority. OBJECTIVES: Current study was conducted to evaluate effect of different level of nitrogen fertilizer and vermicompost on quantitative and qualitative traits of wheat. METHODS: This research was carried out via factorial experiment based on randomized complete blocks design with three replications along 2013-2014 agronomic years. The Main plot included nitrogen fertilizer at four levels (nonuse of fertilizer or control, 50, 100 and 150 kg.ha-1) and vermicompost at four level (nonuse of vermicompost or control, 2.5, 5 and 10 t.ha-1) belonged to sub plot. RESULT: According result of analysis of variance effect of different level of nitrogen, vermicompost and interaction effect of treatments on all measured traits was significant. Assessment result of mean comparison of different level of nitrogen revealed maximum amount of seed yield (5800 kg.ha-1), biologic yield (17210 kg.ha-1), harvest index (35.8%), straw yield (11410 kg.ha-1), number of spike per m2 (534), number of seed per spike (31), 1000-seed weight (36 gr), number of seed per m2 (15900), number of seed per spikelet (2.4), spike length (17 cm), plant height (91.5 cm), protein (18.4%) was obtained for 150 kg.ha-1 nitrogen and minimum amount of mentioned traits were for control treatment. Also mean comparison result of different level of vermicompost indicated the maximum amounts of all measured traits were noted for 10 kg.ha-1 and minimum of those belonged to control treatment. Assessment mean comparison result of interaction effect of treatments indicated the maximum amount of all measured traits belonged to 150 kg.ha-1 nitrogen and 10 t.ha-1 vermicompost and the lowest amounts were for control treatment. CONCLUSION: According result of current research consume 150 kg.ha-1 nitrogen fertilizer and 10 t.ha-1 vermicompost led to achieve highest amount of seed yield, its components, plant height, spike length and protein concentration and it can be advised to farmers in studied region.