Evaluation of super AB A200 hydrogelapplication and irrigation interval on available water and some rooting indices in Juniperus exelsa

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Research Paper 01/09/2014
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Evaluation of super AB A200 hydrogelapplication and irrigation interval on available water and some rooting indices in Juniperus exelsa

Kamran Parvanak, Hadi Chamheidar
J. Bio. Env. Sci.5( 3), 210-219, September 2014.
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Abstract

Super absorption polymers could be considered as an approach to increase water availability in rainfed and irrigated farming.This study aimed to evaluate the impact of four Super AB A 200 hydrogel rates (zero, 0.15, 0.3 and 0.6%w/w) and four irrigation intervals (1, 2, 3 and 4days) on the amount of available water and some rooting indices of Juniperus exelsa. The experimental layout consisted of factorial arranged in a complete block randomized design with three replicates. The results of variance analysis showed that various hydrogels rates, irrigation interval and their interactions had significant effects on the amount of available water and rooting indices (rooting percentage, fresh and dry weight, length, diameter and number of root) (pr ≤ 0.01). Based on the mean comparison, the applying hydrogels independently as much as 0.3% increased rooting indices of cuttings significantly, while the irrigation interval had negative effect on the rooting indices of the plant. Interaction of irrigation interval and the use of hydrogels showed the highest rooting percentage (83.3%), root fresh and dryweight (5.3 and 3.9 g respectively), root elongation and diameter (7.5 and 3 cm respectively) in treatment 0.3%hydrogel and 2days irrigation intervalsthat had significant difference relative to control and other treatments (pr ≤ 0.01). According to these results, applying of 0.3% hydrogel with 2days irrigation intervals also produced cuttings with good rooting and saving 50% irrigation water resources costs as compared to the daily irrigation.

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