Effect of Some Beneficial Microorganisms on Yield and Yield Components of Wheat Plant

With the aim of investigating the effect of some beneficial microorganisms on the yield and its components of the wheat plant Ibaa 99 variety. This experiment was conducted at the College of Agricultural Engineering Sciences of Baghdad University during the winter of 2019-2020, following RCBD with three replications and 8 treatments per replicate: Pseudomonas fluorescens (Ps.), Glomus spp. (Gl.), Mycorrhizae, and Saccharomyces cerevisiae (Sa.) baking yeast, as well as the treatments resulting from their combinations, Ps + Gl, Gl + Sa, Ps + Sa, and Ps + Sa + Gl, in addition to the control treatment. The results showed that all treatments were significantly superior to the control treatment in the number of spikelets spike, spike length, and number of grains spike. The triple treatment Ps+Sa+Gl was significantly superior to all treatments (88.07 grains spike), and this treatment was significantly superior to the treatment Ps+Sa and the single treatment Sa to the other treatments in the number of spikelets m and in the grain yield (3962 kg ha). Then Sa (3473.39 kg ha) was significantly superior to all other treatments, and finally Ps+Gl, Gl+Sa, and Ps+Sa (3010.95, 3079.15, and 3196.82 kg ha, respectively) were significantly superior to Ps, Gl, and control. This shows the importance of combining biofertilizers in plant nutrition and in providing 50% of the fertilizer recommendation, with the consequent reduction of pollution and lower production costs.