The present study was conducted on mango transplants during 2016 & 2017 seasons to investigate the influence of some bio substances as addition nutritive fertilizers i.e. VAM, EM, Blue green algae and Diatom algae extracts. The influence was evaluated through the response of some vegetative growth of "mango transplants. The specific effect of mango cultivars on some vegetative growth, data revealed that, Kent mango cultivar was better than the other investigated cultivar (Keitt) in this respect. Also, fertilizer with soil application of VAM fungi at 4 cm3/ transplant + control or soil application of blue green algea extract at 1g/ transplant + control was superior in this respect where it was able to increase significantly vegetative growth as compared with the other different investigated fertilization especially NPK only (control) during both seasons of study. Concerning the interaction effect of the two investigated factors i.e., mango cultivars and different fertilization on some vegetative growth measurements of mango transplants, data show the highest vegetative growth were obtained with the combination between Kent mango cultivar and fertilized with soil application of VAM fungi at 4 cm3/ transplant + control or soil application of blue green algea extract at 1g/ transplant + control.