EFFECT OF FOLIAR APPLICATION BY HUMIC ACID AND SEAWEED ALGA 300 ON VEGETATIVE GROWTH CHARACTERISTICS OF SOUR ORANGE SEEDLINGS  (Citrus aurantium L.)

	EFFECT OF FOLIAR APPLICATION BY HUMIC ACID AND SEAWEED ALGA 300 ON VEGETATIVE GROWTH CHARACTERISTICS OF SOUR ORANGE SEEDLINGS (Citrus aurantium L.)
journal of kerbala university
Article 1, Volume 13, Issue 4, 2017, Pages 198-203 PDF (0 K)
Abstract
This study was carried out in the nursery of horticulture and landscape design department - College of Agriculture - University of Kirkuk - Iraq during The period from April to October 2016, to study effect of foliar application by Humic acid with two levels (0 and 2) mg.L-1 and seaweed with three levels (0 , 4 and 8)mg.L-1 on vegetative growth characteristics of sour orange seedlings. A factorial experiment with three replications and five seedlings for each unit was carried out using a Randomized Complete Block Design ( R.C.B.D.) and obtained data were statistically analyzed by using (SAS V. 9.0) system , and Duncan’s Multiple Range Test at P> 0.05used to compared the means of treatments.The results in this experiment could be summarized with the 2mg.L-1 of Humic acid and 4mg.L-1 of seaweed which obtained significant increase on all characteristics (stem height and diameter, leaves and shoots number, leaves area, chlorophyll content and nitrogen ratio),which reached (135.00cm , 1.83cm , 108.00leaf.seedling-1 , 19.00branch.seedling-1 , 22.93cm-2 , 138.80CCI and 3.83%) for interaction treatments

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