fatemeh rahiminezhad; mohammad saghari; moslem rostam pour; hamed foroughi far
Volume 24, Issue 1 , May 2017, , Pages 89-97
Abstract
Perennial shrubs cause to change the soil quality of their habitat through litter fall and root penetration. This research was aimed to investigate the effects of two range species on the soil surface. The study was conducted in a part of steppe rangelands in Tabas County. Soil sampling was performed ...
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Perennial shrubs cause to change the soil quality of their habitat through litter fall and root penetration. This research was aimed to investigate the effects of two range species on the soil surface. The study was conducted in a part of steppe rangelands in Tabas County. Soil sampling was performed completely random at 0-20 cm soil depth with two treatments including beneath the stratum and control group. Soil chemical properties including EC, organic matter and soluble sodium and chlorine were measured. Data analysis showed that the soil chemical properties measured beneath the stratum of both species differed significantly as compared with the control group (P<0.01). The results showed that the increased content of these factors beneath the stratum of the study species was different, so that the content of these factors beneath the stratum of Atriplex lentiformis was manifold more than that of Salsola yazdiana. According to the obtained results, the pure use of Atriplex lentiformis could result in salinization of the soil surface.
Hamid Habibian; Abbasali Sanadgol
Volume 14, Issue 1 , January 2007, , Pages 53-67
Abstract
Nowadays; planting of Atri;lex species are used, in range rehabilitation. Soil erosion control and wildlife programs. Optimum density, and periods of prunning of Atriplex lentiformis on quantity of forage production are important. The Atriplex lentiformis was planted in a split-split plot design with ...
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Nowadays; planting of Atri;lex species are used, in range rehabilitation. Soil erosion control and wildlife programs. Optimum density, and periods of prunning of Atriplex lentiformis on quantity of forage production are important. The Atriplex lentiformis was planted in a split-split plot design with 3 replications and 45 treatments in Dadin of Kazeroon in 1993 and investigated for 10 years. The main treatment was planting distance at levels. Sub-treatment was prunning period and the sub-sub-treatment was cutting height. Canopy coverage diameter, height, forage production, and percentage of survival of the plant were measured in different years throughout of the study. The nutritional value of the forage was measured in the last year. The data were analysized by EXCEL, SPSS, and SAS softwares. The results showed that the highest production attained from treatments of 2*2 m planting space, 40 cm height, and once per year cutting, and the least one, resulted of the treatment of 4*4m planting space, zero cm and once per three years cutting. Control and zero height cuttings showed a significant difference (P<0.05) with the other treatments in forage production. The 20, 40, and 60 cm cutting heights showed no significant difference (P>0.05). Zero and 20 cm cutting height showed a significant differece (P>0.05). Zero and 20 cm cutting height showed a significant difference with other treatments in percentage of survival (P<0.05).