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Showing 3 results for Matinkhah
Phenological Study of Thirty Five Tree and Shrub Species in Esfahan City
H. Matinkhah,
Volume 10, Issue 4 (winter 2007)
Abstract
Phenology is the study of time and sequence of recurring stages in the life history of an organism. The occurrence fashions of the phenophases form different phenological behavior patterns. Despite the importance of phenology and wide applications of knowing phenophases, few studies have been done on the wooden species in Iran. The goals of this study are identification and designation of the phenophases occuring time and their successions, phenological behavior patterns and finally phenological patterns assay of 35 fruitful and fruitless woody species in the northeast of Esfahan during 2003-2005. Leaves, flowers, fruits, buds, bark and color changes were observed weekly or every other week. Analysis of the obtained charts and tables shows that with respect to the environmental and climatic condition of the area, observed phenological behavior patterns are two- leaf, two-flower and two-fruit emergent patterns two-flower peak patterns three-fruit perpetuity patterns and three leaf shed patterns. Finally, there are three comparative successions, six-flower and three-leaf phenological patterns. Based on the findings, blooming and leaf shed calendars were also achieved.
The Effects of Soil Ameliorating Hydrogels on Root System Characteristics of Avena fatua in Two Different Soil Textures
M. Rezashateri, S. J. Khajeddin, S. H. Matinkhah, M. M. Majidi,
Volume 21, Issue 2 (Summer 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.
 


Evaluation of Different Irrigation Methods of Hedysarum criniferum Boiss. under Field Conditions
O. Asadi Asadabad, S. H. Matinkhah, Z. Jafari, H. Karim Mojeni,
Volume 25, Issue 1 (Spring 2021)
Abstract
In order to investigate the effect of the type drip of irrigation methods, subsurface irrigation and furrow irrigation on the domestication of Hedysarum criniferum Boiss., an experiment with a  randomized complete block design with three replications was implemented  at Isfahan University of Technology for two years (2016 to 2018) . For this purpose, clay pipes were made and the plant was cultivated on the sides of clay pipes and types. Also, furrow irrigation treatment was applied as the control. During the experiment, all treatments received the same water and finally, some growth parameters were measured. The results of the study showed improvement in height (0.43 and 0.34), canopy cover (0.66 and 0.52), stem number (0.44 and 0.85), chlorophyll index (0.45 and 0.45), seed emergence (0.75 and 0.30), plant survival (0.78 and 0.55), yield (0.23 and 0.35), and water use efficiency (0.25 and 0.25) under type drip irrigation treatment, as compared to subsurface and furrow irrigation, respectively (P<0.05). In general, the type drip treatment is recommended in the early years of planting; however, since the maximum production potential of this plant is in the third year onwards, it is necessary to examine the results in the following years to recommend the proper irrigation method, especially the use of subsurface irrigation. 

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