Response of Barhy date palm growth and fruiting to use organic and bio-fertilizers

The beneficial effects of organic manure or combined with some bio-fertilizers on growth, nutritional status, yield and fruit quality of Barhy date palm grown in Research farm of Agricultural research station at Mataana, Luxor Governorate, Egypt, were studied during the three successive seasons 2021, 2022 and 2023. The experimental palms were arranged in complete randomized design with five treatments and three replications one palm per each.It is evident from the obtained results that applying organic-N either combined with mineral-N (double form), as well as mineral-N and bio-fertilization (triple form) was very effective in improving growth and nutritional status as well as yield and dates quality compared to fertilization with mineral nitrogen only. Fertilizing with triple form (min., organic and bio.) gave the highest values of the studied traits compared to other fertilization treatments.So, the study suggested that using triple form 50% mineral-N, 25% organic and 25% bio-fertilization (EM, netrobin or yeast) improved the vegetative growth, yield and dates quality. In addition, it reduced environmental pollution problems.