Abstract
Abstract: In a study conducted in the Crop Physiology Laboratory, Department of Crop Science, College of Agriculture, University of Tripoli (October - 2021). Plants were grown in pots, two-litre pots were filled with soil from the field, and three seeds of wheat were planted in each pot, then thinned to one plant per pot after germination. The aim of this study is to investigate the effect of several species of microorganisms, such as fungi (Mycorrhiza sp.), and bacteria (Bacillus sp.), as a biofertilizer, on the growth of the wheat crop. There were four treatments in this study; (Control: without-bio fertilizers, whit Mycorrhizal Fungi as a biofertilizer, Bacillus bacteria as a biofertilizer, a mix of Mycorrhizal Fungi * Bacillus bacteria, as a mixture of bio fertilizers), each treatment combination was replicated in three blocks. Plants' responsiveness to bio fertilizers (Bacillus bacteria & Mycorrhizal Fungi) was different for each biofertilizer. Where some of these micro-organisms form a symbiotic relationship with plants, such as fungi (Mycorrhiza sp.) and bacteria (Bacillus sp.) which are free-living or non-symbiotic. For these reasons, the results showed strong significant differences in most of the traits tested in this study. This effect was significantly stronger when fungi and bacteria were used together. Compared to adding bio-fertilizers separately, for the majority of the parameters which studied. Keyword: Mycorrhizal Fungi, Bacillus bacteria, bio fertilizers.