Farhad Fakhri; Mohammad jafari; Mohammadhosein Mahdian; Hosein Azarnivand
Volume 12, Issue 3 , August 2019, , Pages 235-248
Farhad Fakhri; Seyed Hassan Kaboli; Ali AShraf Jafari; Parviz Bayat
Volume 26, Issue 2 , July 2019, , Pages 388-399
Abstract
Capparis spinosa plays an important role in the ecosystem dynamics of arid and semi-arid regions. The development of cultivation of this plant requires optimal conditions to produce seedlings in simple, practical and inexpensive ways. Low germination percentage is one of the most important ...
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Capparis spinosa plays an important role in the ecosystem dynamics of arid and semi-arid regions. The development of cultivation of this plant requires optimal conditions to produce seedlings in simple, practical and inexpensive ways. Low germination percentage is one of the most important barriers to the mass production of Capparis spinosa. In this study, the best strategies for increasing seed germination were investigated using inexpensive and simple scientific methods. For this purpose, after seed collection from local accessions of different areas in Bushehr province, seed preparation treatments were applied for germination. The treatments included scarification with sandpaper, potassium nitrate, hot water, and concentrated sulfuric acid, compared to the control. Seed germination was done by Petri dish in incubator and culture tray in greenhouse. The results showed that potassium nitrate treatment caused the highest germination percentage in Talheh local accession (86.7%) by culture tray method, which showed more than 41% increase compared to control. The highest germination was obtained to be 68.3% in the scarification with sandpaper in the Konari local accession. The germination rate in potassium nitrate treatment in both tray and Petri dish treatments increased significantly compared to other methods. In addition, application of concentrated sulfuric acid and hot water decreased germination percentage and rate compared to the control. Therefore, potassium nitrate solution was the best treatment for increasing the seed germination of the study species.
Arsalan Kamali; Amirdavod Forouzandeh; Seyed Noraddin Tabatabaie; Ahmadreza Ranjbari; Farhad Fakhri
Volume 21, Issue 4 , March 2015, , Pages 708-717
Abstract
This research was aimed to determine the nutritive value of Cenchrus ciliaris, as one of the dominant range species of Bushehr province, as well as studying the changes during the growth stages. The study was conducted in three rangelands (Gomaroon, Kaki and Bashi) during December 2009 to May 2010. Sampling ...
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This research was aimed to determine the nutritive value of Cenchrus ciliaris, as one of the dominant range species of Bushehr province, as well as studying the changes during the growth stages. The study was conducted in three rangelands (Gomaroon, Kaki and Bashi) during December 2009 to May 2010. Sampling was performed randomly at vegetative, flowering and seeding stages and 10 samples were collected from each area. Then, samples were dried and ground to measure DM, CP, Ash, EE, NDF, ADF, ADL, GE, Ca, P, K, Mg, Na, Fe, Mn, Zn, Cu, DMD, OMD and DOMD in the laboratory. A completely randomized design with three treatments (stages) and three replications (areas) was used for statistical analysis. Results showed that NDF and ADF increased with the growth progress but CP, P, K, DMD, OMD and DOMD decreased significantly (P<0.05). The CP content of C. ciliaris, measured at vegetative and flowering stages, can supply the maintenance requirement for a 50-kg mature sheep, a 50-kg mature ewe in the first 15 weeks of pregnancy, and a 40-kg goat. The content ofCa, K, Mg, Na, Fe and Mn, measured for C. ciliaris at different growth stages, were more than critical level for sheep and goats; however, the content of P and Zn at three stages, and the content of Cu (except vegetative stage) were less than critical level. Totally, C. ciliaris is suitable for grazing livestock, especially at vegetative and flowering stages, and if possible, it should be proliferated in similar rangelands.
Akbar Ghasemi; Heshmat Hydari; Farhad Fakhri; Davud Azadfar; Musa Sadeghi
Volume 16, Issue 3 , December 2009, , Pages 362-374
Abstract
Plant cover is one of the best index for recognizing and describing the environmental changes in the forest. This paper attempts to determine the effects of different desert soil classes on some distinctive plant vegetative characteristics. For the purpose of sustainable management, application of floodwater ...
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Plant cover is one of the best index for recognizing and describing the environmental changes in the forest. This paper attempts to determine the effects of different desert soil classes on some distinctive plant vegetative characteristics. For the purpose of sustainable management, application of floodwater spreading for irrigation of desert plants will meet increase the essential water supplies for desert plants, which in turn create the optimum conditions for desert plant growth. In order to examine the effects of flood water distribution on physico-chemical properties of soil and finally on vegetative characteristics of desert plants an area of approximately 300 hectares located at Tangestan flood water experimental station, in Bushehr, has been divided into three sections of each 100 hectares. Each section received different amount of flood water as entry (treatments).The process of irrigation have been conducted since 1997(11 years). Each section has been divided into two subdivision of upland and down-land subdivisions. Each subdivision has been divided into three secondary subdivisions (18 secondary subdivisions).In each secondary subdivisions soil samples were collected to study the physico-chemical properties of the soil, meanwhile in each secondary sub sample a Cluster sample of 4 plots were studied for the proposed vegetative characteristic of deserts plants: Prosopis juliflora, Ziziphus spina-christi and Acacia nilotica. The experiment has been conducted in the form of split plot design. The results indicate that the mean stem diameter, height and crown diameter differ significantly in sections; section number one has the best growth conditions. Comparison of subsections indicate that the upland and down-land mean stem diameter and crown diameter differs significantly in that the down-land has a better condition of growth. The comparison of soil physico-chemical properties indicate that there is a significant differences between sections and section one is dominated over the others.
Farhad Fakhri; Seyid Moh... Jafari; Mohammad Khosroshahi
Volume 14, Issue 3 , January 2007, , Pages 391-402
Abstract
Since geological formation is very important in the process of desert and desertification, in this article lithology, stratigraphy of the Boushehr province was studied with the help of 1:100000, 1:250000 scale maps of G.S.I and N.I.O.C using GIS methodology. Quaternary formations and most ...
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Since geological formation is very important in the process of desert and desertification, in this article lithology, stratigraphy of the Boushehr province was studied with the help of 1:100000, 1:250000 scale maps of G.S.I and N.I.O.C using GIS methodology. Quaternary formations and most of the evaporatic formations in the province were recognized. Saline and evaporatic formations were introduce as “Primary deserts”. Then with the help through overlaying the drainage network on the basic map of Quaternary formations, the secondary deserts was then recognized this kind of desert possess the evaporative material such as gypsum and salt. Both of these processes (The primary and secondary deserts) have formed Boushehr province deserts. final Results showed that 47% of Boushehr province area is classified as desert including 592041 ha “Primary deserts” and 574579 ha as ‘secondary deserts”. It was concluded that most important geological formation effective in deserts formation in Boushehr province comes from Hormoz series, Gachsaran, Mishan and Aghajari formations.