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.
Abbas Zarezadeh; Esmaeel Rahbar; Mohammad Abolghasemi
Volume 11, Issue 2 , August 2019, , Pages 179-190
Mohammad Abolghasemiy; Amrali Shahmoradi; Naser Baghestani; Sadegheh Zarekia
Volume 16, Issue 2 , December 2009, , Pages 254-261
Abstract
Recognition of the autecology of plants and understanding their importance in soil protection, as well as forage production for livestock, is a proper strategy for management, conservation, and development of renewable natural resources, specially vegetation. This investigation was carried ...
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Recognition of the autecology of plants and understanding their importance in soil protection, as well as forage production for livestock, is a proper strategy for management, conservation, and development of renewable natural resources, specially vegetation. This investigation was carried out on autecology of Stipagrostis pennata in Yazd province. For this plant, ecological characteristics such as geographic distribution, climatic properties, topography, and soil were studied. Also phenology and root system of the plant were examined. For this purpose , three study sites of Mansoorieh (in Tabas area), Masjed-e-shokr (beside Yazd-Tabas high way), and Bafgh were determined. The results showed that Stipagrostis pennata is a psammophyte plant with standing stems and branches. This plant grows in low-height sand dunes and sandy hills. Elevation range for areas in which this plant grows is 700-1600 meters above sea level. Measure of soil acidity (pH) is 8.25-8.53 and electrical conductivity (EC) is 0.48 to 1.2 ds. This species starts its vegetative growth at the end of February and flowers in early May. Its seeds ripen in mid June. During summer and autumn, the plant is in dormancy stage. Due to high aerial organs, Stipagrostis pennata has a good resistance against sandy storms and winds. So it is highly recommended for mobile sand dune stabilization and control of soil erosion in desert areas. It also produces a fairly good amount of forage for livestock and wildlife.