Paper Details

The effect of Polyacryl amide A 200 polymer on optimization of moisture and rooting indices of Rosa sp.

Kamran Parvanak,  Hadi Chamheidar

DOI: https://dx.doi.org/10.12692/ijb/5.6.119-127

Int. J. Biosci. 5(6), 119-127. September, 2014. (PDF)

Abstract:

This study aimed to evaluate the impact of four Polyacryl amide A 200 polymer rates (zero, 0.15, 0.3 and 0.6% w/w) and four irrigation intervals (1, 2, 3 and 4 days) on the amount of available water and some rooting indices of Rosa Sp. The experimental layout consisted of factorial arranged in a complete block randomized design with three replicates. The results of variance analysis showed that various polymers 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 polymers 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 polymers showed the highest rooting percentage (83.3%), root fresh and dry weight (4.1 and 3.2 g respectively), root elongation and diameter (5.7 and 2.1 cm respectively) in treatment 0.3% polymer and 2 days irrigation interval that had significant difference relative to control and other treatments (pr ≤ 0.01). Application of polymers in 0.3 and 0.6%, increased the amount of available water 2 to 2.75 times respectively. According to these results, applying of 0.3% polymer with 2 days irrigation intervals also produced cuttings with good rooting and saving 50% irrigation water resources costs as compared to the daily irrigation