تأثير إضافة حامض الهيوميك Acid Humic و اليوريا في بعض صفات النمو لشتلات التين .Ficus carica L صنف White Adriatic.

Abstract EN

This study was conducted in the nursery of Horticulture and Landscape Design Department - College of Agriculture - University of Kirkuk - Iraq during the period from 1- 4-2016 to 1-10-2016, to study the effect of organic fertilizing by Humic acid with three levels (0, 25 and 50)ml.L-1 and urea with three levels (0 , 1000 and 2000)mg.L-1 on some growth characteristics of fig saplings.

a factorial experiment with three replications was carried out using a Randomized Complete Block Design (RCBD) with three replications and four saplings for each experimental unit.

The data were statistically analyzed by using (SAS V.

9.0) system , and Duncan’s Multiple Range Test at P < 0.05 was used to compare the means of the treatments.

The results obtained in this experiment could be summarized as follows: fertilizing with Humic acid and urea caused a significant increased in growth characteristics.

The level of 50ml.L-1 of Humic acid caused a significant increased on (stem diameter, leaves number, leaf area, dry weight of vegetative growth and roots length) compared with control treatment, while the 25ml.L-1 of Humic acid caused significant increased on (stem length, fresh weight of vegetative growth , root diameter, fresh and dry weight of roots).

Fertilizing with 2000mg.L-1 of urea showed significant increased in all vegetative growth characteristics and roots diameter.

While 1000mg.L-1 of urea showed significant increased (root length and fresh and dry weights of roots) compared with other treatments.

The interaction between treatments showed significant increase on study characteristics.