Hadi Pirasteh-Anosheh; Mehdi Shiran Tafti; Farhad Dehghani; Gholamhasan Ranjbar
Volume 28, Issue 3 , October 2021, , Pages 507-519
Abstract
In current research, some soil properties and growth of camelthorn (Alhagi maurorum Medik.) were monitored in saline lands in Yazd Province during 2019-2020 and accordingly, the ability of this species was determined for growing in the saline lands. For this purpose, seven rangelands in Yazd consisted ...
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In current research, some soil properties and growth of camelthorn (Alhagi maurorum Medik.) were monitored in saline lands in Yazd Province during 2019-2020 and accordingly, the ability of this species was determined for growing in the saline lands. For this purpose, seven rangelands in Yazd consisted of Bafgh, Javadieh, Bahabad, Jolgeh, Ardakan, Aghda and Abarkooh were selected, in which Alhagi was dominant vegetation. Salinity of saturated extract (ECe) and pH of soil, salinity and pH of water, fresh and dry weight were measured by sampling and apparent soil salinity (ECa) was assessed by electromagnetic induction device (EM38). The results showed that regression coefficients (R2) of estimating soil salinity using EM38 device in different regions were accepted and varied between 0.52-0.86. Soil salinity levels varied over the surveyed lands from 2.17 g salt/kg soil in Aghda to 226.5 g salt/kg soil in Ardakan for 0-30 cm soil depth and from 0.4 g salt/kg soil in Bafgh to 118.3 g salt/kg soil in Ardakan for 30-60 cm soil depth. The maximum production of ryegrass, equal to 25 tons ha-1 of fresh weight and 7 tons ha-1 of dry weight, was observed in Bafgh with water salinity of 12 dS m-1 and soil salinity of 11 g kg-1. On average, the highest production was observed in Bafgh, Bahabad, Abarkooh, Aqda and Ardakan, respectively, which was almost consistent with changes in soil salinity and acidity. It seems that Alhagi has high tolerance to water and soil salinity, however, is sensitive to soil pH. The use of EM38 device to evaluate soil salinity in lands with camelthorn cover of Yazd province was reasonably accurate, and is recommended for monitoring soil salinity of other rangelands, but calibration in each area and for each soil depth separately is necessary.
Mohammad Abolghasemiy; Sedigheh Zarekia; seyyed Mojtaba Safavi
Volume 27, Issue 3 , October 2020, , Pages 495-503
Abstract
A significant area of the country's rangelands has been destroyed by various factors such as uncontrolled exploitation, climate change, and other factors. An important part of the rangeland plants has been endangered, and the abundance of some important plant species has been ...
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A significant area of the country's rangelands has been destroyed by various factors such as uncontrolled exploitation, climate change, and other factors. An important part of the rangeland plants has been endangered, and the abundance of some important plant species has been severely reduced. To create stability in such rangelands, their improvement and rehabilitation by selecting suitable species and finding the best cultivation and establishment methods have a special priority. For this purpose, the seeds of the most important populations of perennial plants and forages, along with their existing populations, were collected from the rangelands of different regions of Yazd and South Khorasan provinces on appropriate dates. The study was conductedin the form of a randomized complete block design with three replications in the field conditions, and the characteristics of forage production yield, canopy cover percentage, height, and seed yield were recorded. Data were analyzed using SAS software, and the means were compared with the Duncan test. The results showed that the populations of Kharanagh, (production 1094 g per plant and canopy cover 10548 cm2) Tabas (production 1734 g per plant and canopy cover 17221 cm2) Halothamnus subaphyllus and Tabas population of Salsola imbricata (production 2278 g per plant and canopy cover 22221 cm2) and Bahabad population of Salsola yazdiana (production 530 g per plant and canopy cover 4646 cm2) were superior in terms of the evaluated traits compared to other populations that could be taken into account for the improvement of saline rangelands.
Seyed Mahdi Adnani; Mohammad Reza Tatian; Ehsan Zandi Esfahan; Reza Tamartash; Hosein Bagheri
Volume 27, Issue 2 , June 2020, , Pages 215-223
Abstract
Important and influential factors on livestock production in arid areas are limited water resources, increasing salinity and lack of food. Halophytes are especially important in saline habitats as alternative forage sources. Forage quality is one of the main factors determining the nutritional requirements ...
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Important and influential factors on livestock production in arid areas are limited water resources, increasing salinity and lack of food. Halophytes are especially important in saline habitats as alternative forage sources. Forage quality is one of the main factors determining the nutritional requirements of livestock and subsequently the grazing capacity of rangelands. Determination of forage quality of rangeland species is one of the fundamental factors for proper rangeland management. The quality of forage varies in different places and times and different factors affect it. Awareness of forage quality of halophytes at each phenological stage, not only helps beneficiaries in arid and desert areas to select suitable plant species for planting in haloculture programs, but also sets the appropriate time for grazing to achieve greater livestock performance in saline lands. In the present study, the effects of phenological stages on eight forage quality traits were investigated for three halophytes ie., Halocnemum strobilaceum, Nitraria schoberi and Suaeda aegyptiaca. Plant samples were collected in vegetative, flowering, and seeding stages from saline lands in the margin of Houze Sultan, Qom province. Data were analyzed by a factorial experiment in a completely randomized design. Duncan mean comparison test was performed. The results showed that the effects of species and phenological stages on forage quality were significant (p < /em><0.01). In general, the results of this study indicated the superiority of Ha. strobilaceum in terms of nutritional value compared to Ni. schoberi and Su. aegyptiaca, so that it can be considered as a new source of forage in the lands affected by salinity.
Ehsan Zandi; Ali Ashraf Jafari; rasoul mirakhorli
Volume 24, Issue 2 , July 2017, , Pages 464-473
Abstract
Due to the adaptability to arid and desert conditions, halophytes could supply a part of livestock forage requirement in early spring, summer, and especially autumn. However, there is little information on the forage quality of these plants. On the other hands, halophytes vary considerably in their nutritive ...
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Due to the adaptability to arid and desert conditions, halophytes could supply a part of livestock forage requirement in early spring, summer, and especially autumn. However, there is little information on the forage quality of these plants. On the other hands, halophytes vary considerably in their nutritive value not only among species but also among phenological stages. Therefore, knowledge on forage quality of halophytes at each phenological stage could help the beneficiaries in arid regions to opt proper species for cultivation in haloculture programs as well as determining the suitable time for livestock grazing. In the present study, the effects of phenological stages on six forage quality traits were investigated for two halophytes ie., Atriplex leucoclada and Suaeda fruticosa. Plant samples were collected from saline lands in Garmsar, Semnan Province. The study was conducted in a completely randomized design with three replications. The results showed that the effects of phenological stages and species on forage quality were significant (P<0.01).The highest forage quality was obtained at vegetative growth stage and then it declined at the seeding stage. Overall, our results clearly indicate the higher forage quality of Suaeda fruticosa as compared with Atriplex leucoclada. Therefore, Suaeda fruticosa could be introduced as a new source of forage in saline lands on which other conventional fodders have no chance to grow and yield.
Arezoo Alizadeh; Javad Moetamedi; Reza Erfanzadeh
Volume 21, Issue 4 , March 2015, , Pages 663-675
Abstract
This research was aimed to investigate the potential of four halophytes from the Urmia Lacke including Salsola dendroides, Salsola nitraria, Salsola iberica and Halocnemum strobilaceum as soli phytodesalination. For this purpose, soil samples were collected from two soil depths of 0-15 and 15-30 cm inside ...
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This research was aimed to investigate the potential of four halophytes from the Urmia Lacke including Salsola dendroides, Salsola nitraria, Salsola iberica and Halocnemum strobilaceum as soli phytodesalination. For this purpose, soil samples were collected from two soil depths of 0-15 and 15-30 cm inside the ecological patches as well as around it. Our results clearly showed that the studied halophytes could reduce the amount of Na+, Ca2+, and Mg2+ significantly in the first soil depth (p<0.01). However, in the second depth, less affected by the root of species, there were no significant differences in the amounts of these cations in the soil of inside and outside the patches. The absorption of Mg2+, Cl-, Ca2+, Na+ and K+ by underground and aboveground biomass was also investigated. The results of mean comparisons showed that Salsola nitraria and Halocnemum strobilaceum accumulated the highest concentration of magnesium and chlorine in each gram of dry weight biomass. Also, the studied species showed no significant difference in SAR. The amount of these elements were compared in the roots of two species having the highest salt accumulation in aboveground biomass, and the species accumulating lower levels of these elements in roots was introduced. Overall, Halocnemum. strobilaceum showed the highest potential in absorbing salt through roots (soli phytodesalination) as compared to the rest of the species and its cultivation could be recommended for soil improvement and forage production in saline lands.