Effect of different amount of mineral nitrogen and biological fertilizer on yield and yield components of corn

摘要

To evaluate the effects of different amount of mineral nitrogen and biosuper fertilizer on yield and yield components of corn, a research was conducted in Tabriz Islamic Azad university research field in 2011 based on factorial experiment in completely randomized block design in three replications. Mineral nitrogen fertilizer (N) levels (0, 60, 120, 180 and 240 kg/ha) and two levels of Biosuper fertilizer (B) application (control and biosuper) and collective application was considered as (NB). The results showed that using mineral nitrogen fertilizer had positive effect on 100 Kernel weight, Row in ear, Number of leaves, Ear weight, Leaf area index and Grain yield. Also, using Biosuper fertilizer (once application treatment) led to increase Grain yield. Most of the grain yield obtained from application of Biosuper fertilizer equal to 295.051gr/m² and application of 180 kg/ha of mineral nitrogen equal to 445.547 gr/m². Application of Biosuper fertilizer led to increase of Grain yield by 16% and application of Nitrogen fertilizer led to increase of Grain yield by 61% CV. 504 of corn.