Showing 2 results for V. Mozafari
S. Eskandari , V. Mozafari,
Volume 16, Issue 60 (Summer 2012)
Abstract
A greenhouse experiment was conducted to study the effects of soil copper (Cu) and salinity on growth and chemical composition of two pistachio cultivars. A factorial experiment was carried out as a completely randomized design with three replications. Treatments consisted of four Cu levels (0, 2.5, 5, and 7.5 mg Kg-1soil as CuSO4.2H2O), five salinity levels (0, 800, 1600, 2400, and 3200 mg NaCl Kg-1 soil) and two pistachio cultivars (Badami-e-Zarand and Ghazvini). Results showed that salinity significantly decreased growth parameters. Application of 3200 mg NaCl Kg-1 soil decreased shoot and root dry weights, leaf area and stem height by 67, 72, 45 and 76 % respectively. Application of 7.5 mg Cu Kg-1 soil increased shoot dry weight and leaf area by 24 and 26% respectively. Morever, there was no significant difference between growth parameters of two pistachio cultivars, except for leaf area index. Salinity stress significantly decreased shoot and root P, k and Cu total uptake, and increased that of Na and Cl. Application of 5 mg Cu Kg-1 soil significantly increased shoot Cu uptake. Since total uptake of all elements for Badami cultivar was significantly higher than the Ghazvini, it could be concluded that the latter cultivar is probably more resistant to the saline conditions.
N. Besharat, A. Tajabadi Pour, V. Mozafari,
Volume 18, Issue 67 (Spring 2014)
Abstract
To study the effects of soil phosphorus (P) application on growth and water relations and nutrient concentration of pistachio seedlings (Badami-e-Zarand) under water stress, a greenhouse experiment was conducted. Treatments were arranged in a factorial manner as a completely randomized design with three replications. Treatments consisted of six P levels (0, 30, 60, 90, 120 and 150 mg P Kg-1 soil as H3PO4) and three irrigation intervals (2, 4 and 8 days). Results showed that as water stress increased, growth parameters significantly decreased. As irrigation interval was increased to 8 days, shoot and root dry weights, shoot/root ratio, leaf area and leaf number and stem height decreased. Photosynthesis parameters were significantly decreased by increasing water stress. Also, P and Zn concentrations decreased as irrigation interval increased. Analysis of variance indicated that P application had no significant effect on growth parameters, transpiration rate and photosynthesis. It seems that Olsen extractable P (5.35 mg kg-1 soil) was sufficient for optimum growth of pistachio seedlings and thus, no growth responses were observed from P application in this experiment. Application of phosphorus significantly increased P and decreased Zn concentrations.
