h.matinkhah

Since the amount of water in the arid and desert regions is limited, the existing water resources utilization methods as well as irrigation methods in these areas are different from other areas. For this purpose, an experiment was conducted as split plot in a completely randomized design with three replications in the Isfahan University of Technology. In this experiment, the amount of irrigation (5 and 10 liters) as the main factor, irrigation method (surface and subsurface irrigation) as the sub-factor, soil amendment (fertilizer 75% and 15% (control) and zeolite 25% and 15%) as the sub-sub factors, and plant height, basal area, relative chlorophyll index and stomata conductance of Melia azedarach as dependent variables were considered. The results showed that the highest height was obtained in 5 liters of subsurface irrigation with 25% zeolite, which was significantly different from the other treatment compounds (P<0.05). A 5-liter surface irrigation treatment with 25% zeolite could be recommended to achieve the maximum stomatal conductance (P<0.05). The 5-liter subsurface irrigation treatments with 15% zeolite and 15% fertilizer had the highest relative chlorophyll content, respectively. Therefore, it could be inferred that using zeolite provided the sufficient and continuous moisture for the plant, resulting in improved plant growth traits.

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.