Response of Some Wheat Varieties to Bio and Mineral Nitrogen Fertilizers

In order to study the effect of Microbin inoculation, different rates of nitrogen fertilizer (45, 90, 135 and 180 kg ha-1) and their interaction on yield and yield components and protein percentage of two wheat varieties (Sakha 93 and Gemmeiza 9) during the two successive growing winter seasons 2010/2011 and 2011/2012 seasons. The experimental design was split B split plot design with three replications, Microbin inoculations were located in main plots and four N rates fertilizers were allocated in the sup-plots and two wheat cultivars were allocated in the sub-sub plots. The highest yield was produced due to application of microbin, also the same trend was obtained with N rate of 180 kg ha-1. Gemmeiza 9 recorded the highest yield compared with Sakha 93. The interaction between bio-fertilizer and N rates proved to be significant for all studied traits. The highest grain yield/ha was found with the interaction between MicrobinxGemmeiza 9. Also, the interaction between 180 kg N ha-1xGemmeiza 9 recorded the highest grain yield ha-1. According to these results, rate of 180 kg N ha-1 and application of microbin as bio-fertilizer using variety Gemmeiza 9 could be recommended for favorable wheat production under the local environmental conditions of this study.