The possibility of reducing the addition of chemical fertilization to pomello, grapefruit seedlings by adding biological and organic fertilization.

The study was carried out with the aim of improving a number of vegetative and root growth characteristics of grafted pomello and grapefruit seedlings through the addition of biological fertilizer (Gorabac G), liquid organic fertilizer (Compo), and chemical (urea). The results of the study were summarized as follows: 1- The type of grafts (pomello and grapefruit) did not have any significant effect on the studied traits, as there were no significant differences between the two types. 2- Adding the fertilizer combination to both biological and liquid organic fertilizer caused a significant increase in the studied traits, especially in the treatment (20 g of seedlings -1 of bio-fertilizer + 10 ml L-1 of liquid organic fertilizer). In light of the results obtained, the study recommends using this fertilizer treatment to increase the growth of the grafts and obtain strong grafted seedlings for the purpose of planting them in the permanent place