The study was conducted in the nursery of Hort. Dept., College of Agriculture and Forestry,
Mosul University, Iraq, during 2018 season to study the response of budded "Zaghinia" apricot on seedlings
rootstock to bio, organic and chemical fertilizers, and their effects on seedling growth. The studied factors were
as follows: Bio fertilizer Fulzyme (0,1and 2 g. seedling-1
), organic fertilizer (Rice residue) (0, 1 and 2 kg.
seedling-1
) and DAP fertilizers (0, 5 and 10 g. seedling-1
). The study was performed by using split-split plots
within factorial experiment in randomized complete block design (RCBD), with 3 factors and 3 replicates, by
using 6 seedlings for each treatment. Treatment means were compared by using Duncan multiple levels at 5% p.
the most important results obtained were as follows: 1 and 2 gm.seedling-1 of bio fertilizer (Fulzyme) and
Chemical fertilizer (DAP) at the levels 5 and 10 g. seedling-1 affected significantly resulted in a significant
increase in soil available nitrogen, while the addition of organic fertilizer (rice residues) and for both levels 1
and 2 kg. Seedling-1 gave a significant increase in nitrogen, phosphorus, ready-made potassium and pH of the
seedling soil, and the bilateral interaction had a significant role in the growth of seedlings, especially the
treatment of the interaction between the fertilizer (Fulzym) and organic fertilizer (Rice residues), which have a
significant effect in giving the best results in available nitrogen, phosphorus and potassium in the soil, and the
triple interference also gave a significant increase in all studied traits.