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Open Access Article
1 - First record of Pythium catenulatum and Pythium okanoganense on turfgrasses in Iran
Maryam Khodashenas Roudsary Seyed Mahmoud Okhovat Mansoure Mirabolfathi Mohsen KafiTo study the role of Pythium species as the turf pathogenic agents, during the years 2005 and 2006, diseased samples and soil samples from green spaces and sport fields were collected from different regions of Tehran province. From isolates identified, Pythium catenulat MoreTo study the role of Pythium species as the turf pathogenic agents, during the years 2005 and 2006, diseased samples and soil samples from green spaces and sport fields were collected from different regions of Tehran province. From isolates identified, Pythium catenulatum Matthewshas been reported from turfgrasses in other countries, but our study is the first report of this species in Iran. Pythium okanoganense Lippshas been isolated from soil in Iran but hasn’t been recorded from turfgrasses in Iran and other countries yet. Manuscript profile -
Open Access Article
2 - Allelopathic Effect of Leaf Water Extract of Hoary alyssum (Berteroa incana L.) at Rosette Stage on Seed Germination
H. Madani M.K. Upadhayaya G. StoppsThe allelopathic effects of leaves at rosette stage of the hoary alyssum (Berteroa incana L.) against some associated grasses like, prairie June grass (Koeleria macrantha), Idaho fescue (Festuca idahoensis), blue-bunch wheatgrass (Pseudoroegneria spicata) and cheat gras MoreThe allelopathic effects of leaves at rosette stage of the hoary alyssum (Berteroa incana L.) against some associated grasses like, prairie June grass (Koeleria macrantha), Idaho fescue (Festuca idahoensis), blue-bunch wheatgrass (Pseudoroegneria spicata) and cheat grass (Bromus tectorum) and its own were investigated. The experiment al materials used were the leaf extracts and its allelopathic effects on seed germination and seedling emergence of the abave mentioned grasses in Petri dishes. According to our study, leaves of hoary alyssum rosettes at stage have the potential to reduce germination rate, root and shoot growth of pasture grasses and hoary alyssum itself due to its allelopathic effect. The leaf leachate solution bioassays also showed that the germination of cheat grass was more susceptible to 4% solution of allelopathic extract of leaves. Hoary alyssum leaf extract also exhibited allelopathic self-inhibition, in both seedling root and shoot growth at 2 and 4% concentrations. Self- inhibitory allelopathic effects of hoary alyssum could also be important in preventing seed germination and seedling establishment of neighboring plant. Manuscript profile -
Open Access Article
3 - Evaluation of the effect of day length on morphological and physiological indices of Bermudagrass (Cynodon dactylon [L.] Pers.) and Tall Fescue (Festuca arundinacea Schreb.) Turfgrasses in field conditions
Nader Adamipour Hassan Salehi Morteza Khosh-KhuiIt is estimated that 20 to 25 percent of all turfgrasses are maintained under some shades, whether from building or trees. Shade affects plant growth by influencing light intensity, quality, and duration. Given the importance of turfgrasses in the beauty of the environm MoreIt is estimated that 20 to 25 percent of all turfgrasses are maintained under some shades, whether from building or trees. Shade affects plant growth by influencing light intensity, quality, and duration. Given the importance of turfgrasses in the beauty of the environment surrounding human beings, so far enough research has not been done to understand the morpho-physiological properties of the turfgrasses under different day length conditions. For this purpose, a field experiment was conducted to determine the effect of day length on some morphological and physiological characteristics of two turfgrass genera in a split plot study based on a randomized complete block design with four replications in research farm of the Department of Horticultural Sciences, College of Agriculture, Shiraz University. Day length at three levels including long day length (16 hours), intermediate day length (12 hours), and short day length (8 hours) were considered as the main factor and two turfgrasses genera (Festuca arundinacea Schreb. and Cynodon dactylon [L.] Pers.) were considered as sub plots. The results showed that short day causes decreasing tiller density, fresh and dry weight of shoot, fresh and dry weight of root, and chlorophyll and starch contents and led to increasing leaf area and superoxide dismutase, peroxidase, and ascorbate peroxidase enzymes activities. Also, results showed that long day causes increasing tiller density, fresh and dry weight of shoot, fresh and dry weight of root and chlorophyll and starch contents and led to decreasing leaf area and superoxide dismutase, peroxidase and ascorbate peroxidase enzymes activities. Festuca arundinacea turfgrass compared with Cynodon dactylon turfgrass showed more resistance to decrease in day length. Regarding the possibility of increasing the period of light in parks and stadiums, in cold seasons when turfgrasses turn yellow, increasing photoperiod leads to improvement of the green color and increasing the efficiency of turfgrasses. Manuscript profile -
Open Access Article
4 - Effect of Soil Properties on Above-ground Net Primary Production in Moghan-Sabalan Rangelands, Iran
Samaneh Mohammadi Moghaddam Ardavan Ghorbani Hossein Arzani Javanshir Azizi Mobser Raoof Mostafazadeh -
Open Access Article
5 - A Review on Bush Encroachment Effect on Cattle Rearing in Rangelands
Shimels Ali Getachew Muche -
Open Access Article
6 - Effect of Fire on Composition, Biodiversity, and Functional Groups Changes in Semi-Steppe Rangelands of Southern Zagros
Parviz Gholami Mohammad Reza Mirzaei Ehsan Zandi Esfahan Alireza Eftekhari -
Open Access Article
7 - Changes in Soil Organic Carbon, Nitrogen and Phosphorus in Modified and Native Rangeland Communities (Case study: Sisab Rangelands, Bojnord)
Ali Asghar Naghipour Borj Maryam Haidarian Aghakhani Masoud Nasri Hadi Radnezhad -
Open Access Article
8 - Investigation of the biomass changes of two species Bromus tomentellus and Festuca ovina (Case study: Alamout mountain rangelands-Ghazvin)
S. Rashvand حسن یگانهWithout knowing the characteristics and amount of forage plants in a rangeland during the grazing period, planning and management, and livestock grazing is not possible. So changes the production and consumption of important grasses was measured in the semi-steppe range MoreWithout knowing the characteristics and amount of forage plants in a rangeland during the grazing period, planning and management, and livestock grazing is not possible. So changes the production and consumption of important grasses was measured in the semi-steppe rangelands of Alamout mountain rangelands-Ghazvin. Every year the same number in the enclosure base and base outside the enclosure of the same species Bromus tomentellus Boiss. And Festuca ovina L. was chosen to investigate changes in production and consumption. In each month of the season forage production and consumption, 5 Base of each species harvested and transported to the laboratory separation in separate envelopes after air drying, dry weight difference inside and outside the enclosure, the calculation of forage produced and consumed at the site. Data from 1386 to 1389 (for four years), the combined analysis of variance was used in a completely randomized design. Analysis of variance results showed that the studied species the significant differences between years and months inventory is considered in terms of forage production and consumption of the species there. The consumption compared to the same species and time to peak strain it was also same between the months of operation. Manuscript profile