Abstract
Six Acacia species known for their tolerance to semi-arid conditions were selected to find out the effect of three biofertilizers, viz., Rhizobium, Phosphobacteria and Vesicular-Arbuscular Mycorrhizae (VAM) and one inorganic fertilize (Di-ammonium phosphate) on the germination per cent, speed of germination and vigour index. Among the biofertilizers applied. VAM and Rhizobium were the most influential in increasing the above mentioned parameters in most of the species. In toto, the germination and the vigour of seedlings of Acacia species were positively influenced by the bio-inoculates.
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