Effect of nitroxin, nitrogen and manure application on yield, nitrogen use efficiency and Some crop characteristics in sweet corn

In order to effect nitroxin levels of nitrogen and manure application on nitrogen use efficiency and some quantitative traits in sweet corn varieties as Chase factorial experimental design based on randomized complete block with three replications in agricultural research farm in 2010، Islamic Azad University Arak was performed. Factors studied include two levels nitroxin inoculated and non inoculated with the seed، pure nitrogen at three levels 0، 50 and 100 kg ha-1 and manure at three levels 10، 20 and 30 tons ha-1 were. The results showed nitroxin on the characteristics of grain per ear، ear away from the field level، cob weight، grain yield and nitrogen use efficiency had the effect، so that the increase of grain per ear، cob weight، grain yield per hectare and nitrogen use efficiency was. Animal manure also on the characteristics of grain per ear، ear away from the field level، ear leaf area، grain hectolitre weight، grain yield per hectare and nitrogen use efficiency had the effect، so that reduces the nitrogen use efficiency and grain per ear was. Nitrogen effects on grain protein، cob weight، ear leaf area، grain yield and nitrogen use efficiency was significantly increased grain protein and grain yield per hectare was. Excess nitrogen and manure significantly reduced nitrogen use efficiency was also inoculated seed nitroxin positive effect on nitrogen use efficiency found.