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M. Rezashateri, S. J. Khajeddin, S. H. Matinkhah, M. M. Majidi,
Volume 21, Issue 2 (8-2017)
Abstract

This research investigated the effects of super absorbentpolymers on root characteristics of Avena fatua under two soil textures and three irrigation regimes. The study was arranged according to a factorial experiment based on a completely randomized design with three replications. Hydrogel compositions included three types of super absorbents (Aquasorb, Boloorab A and Stockosorb) with two levels of 5 and 10 g/kg of soil, plus a control level. The studied traits were shoot height, shoot dry weight, root dry weight, ratio of root/shoot, root length, root perimeter and root volume of Avena fatua. ANOVA showed that the effect of soil texture was significant (p<0.01) for all studied traits. Mean comparison stated that 10g/kg of Aquasorb with 100% irrigation in sandy loam texture and 5g/kg of Stockosorb with 100% irrigation in loamy texture had the most significant and best results, compared with the control treatments. The results revealed that production of dense root network and root aggregation stimulated by super absorbent polymers, increased root contacts with moisture and led to significant increment in root traits like length, perimeter and volume by preparing water. In addition, selecting the type and concentration of super absorbent polymers depends on soil texture, considering the difference between the best results in two soil textures.
 



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