A survey of some fungal diseases on date palm trees recorded the highest disease incidence (DI %) at Giza, New Valley, Aswan, El Beheira and El Sharkia governorates. Alternaria alternata recorded the most frequency (67.38%) followed by Nigrospora oryzae (9.93%), Lasiodiplodia theobromae (9.22%) and Fusarium solani (7.80%) respectively; meanwhile, the lowest percentage of frequency was recorded for Fusarium oxysporum (5.67%). L. theobromae was the main pathogenic fungus (100%) colonizing the treated detached leaves. Trichoderma harzianum I1 and I2 effectively inhibited the hyphal growth of the aforementioned tested fungi. The highest percentage (76.85%) of inhibition zone was recorded for T. harzianum I1 on F. oxysporum followed by T. harzianum I2 (70.56 %) on A. alternata. On the other hand, Bacillus spp. showed an inhibitory effect on all tested fungi. The highest inhibition of Bacillus spp. (42.2%) was recorded on A. alternata while the lowest inhibition (16.7%) was recorded on F. solani. For electrolyzed water tests, acidic EW gave the highest effect on all tested fungi compared with alkaline EW and NaCl without EW, which showed the highest effect on A. alternata with (12.67mm) followed by F. oxysporum, F. solani and N. oryzae with (14.67, 25.33, and 26 mm) respectively. Chemical control Tebuzyn 25% EW, Sevron 50% WDG and Sim-mildew 72% WP reduced the growth of the tested fungi. The findings contribute to a better understanding of effective control measures for some date palm diseases.