THE ROLE OF BIO, ORGANIC AND CHEMICAL FERTILIZERS IN THE GROWTH OF BUDDED APRICOT SEEDLINGS CV. "ZAGHINIA

Rezumat

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, 1 and 2 g.seedling-1
), Organic fertilizer (rice residue) (0, 1 and 2
kg.seedling-1
) and DAP fertilizers (0, 5 and 10 gm.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 g.seedling-1 of bio fertilizer (Fulzyme) resulted in
a significant increase in most of traits, especially leaves content of P and Zn, while the addition of organic
fertilizer (rice residue) at 1 and 2 kg.seedling-1 gave a significant increase in most of studied traits (leaves N, P,
K and Zn, Chemical fertilizer (DAP) at the levels 5 and 10 g.seedling-1 affected significantly most of the studied
traits, especially leaves K and Zn. The double interaction has a high role in seedlings growth, especially the
interaction between bio fertilizer (Fulzyme) and organic fertilizer (rice residue), which affected highly in leaves
N, P & Zn and the triple interference also gave a significant increase in all studied traits.