List of Articles festuca

• Open Access Article
  • Abstract Page
  • Full-Text
  
  1 - بررسی خصوصیات بوم‏ شناختی گونه مرتعی Festuca sulcata در مراتع آلپی استان اردبیل
  جابر شریفی*
  Manuscript profile
• Open Access Article
  • Abstract Page
  • Full-Text
  
  2 - Apple orchard weeds management by grasses perennial cover crops
  بتول صمدانی hekmat Esfandiyari
  Planting permanent cover crops is an eco-friendly approach for reducing weed problems without use of chemical. In order to study effect of perennial cover crop, in comparison with annual cover crops, on weed control and weed community structure this research was conduct More

  Planting permanent cover crops is an eco-friendly approach for reducing weed problems without use of chemical. In order to study effect of perennial cover crop, in comparison with annual cover crops, on weed control and weed community structure this research was conducted in an apple orchard interrows for 2 yr in Gazvin province. Treatments were: Festuca ovina, Festuca arundinacea, Lolium perene, Bromus inermis with replant and without replant, Secale cereal and control (without weed control). In the first spring, perennial cover crops and S. cereal reduced weeds dry weight 70 and 100%, respectively, and in the second spring perennial cover crops in average and S. cereal reduced weeds dry weight 58 and 94%, respectively. In the second year Bromus inermis and Festuca ovina reduced weeds dry weight 10 and 30% more than other perennial cover crops. Replant needed for establishment of perennial cover crops. Cover crops treatments had effect on weed community structure, as weed composition in the end of second year in Bromus inermis and Festuca arundinacea was different from control. However, weed composition in Lolium perene and F. ovina was same as control. Perennial cover crops can be an effective weed management in organic orchards. Manuscript profile
• Open Access Article
  • Abstract Page
  • Full-Text
  
  3 - The study of some ecological factors affecting distribution of Festuca ovina in Rangelands, Lorestan Province- County Delfan
  amir mirzaei mossivand Farshad Keivan Behjou Parvin Ramak Ehsan Zandi Esfahan
  The aim of present study was assessing relationship between Festuca ovina dispersion. 5 habitats in County Delfan was chosen. In each habitat, three sites were selected at each site was established three transects the length of 100 meters. Along each transect in 10-squa More

  The aim of present study was assessing relationship between Festuca ovina dispersion. 5 habitats in County Delfan was chosen. In each habitat, three sites were selected at each site was established three transects the length of 100 meters. Along each transect in 10-square-meter plots with a total canopy cover and density of the studied species was determined. Then at initial, mid and end of transects soil samples were extracted in 0-30cm depth (A total of 135 soil samples). Height, slope, aspect and some soil characteristics including texture, electrical conductivity, acidity, organic matter, phosphorus, potassium and nitrate was determined. Cluster analysis to classify the sites sampled, Compare groups resulting from cluster analysis of independent t test and discriminate analysis was used to determine the important parameters. The results of cluster analysis indicated that the sites were separated to two main groups (At 5%). Also the results showed that studied species have the most presence in height of 2641m, slope more than 40 percent, NorthWest and western aspect, temperature more than 10 degree, precipitation 481mm, soils with 1.97 percent organic matter and less clay also more silt. The results of discriminant analysis indicated that at first level height, precipitation, temperature and some soil parameters like sand, silt and organic matter and at second level aspect and other soil characteristics like pH and potassium are effective in the studies species dispersion. According to the results of this study can be recommended as suitable to be used for rangeland restoration Manuscript profile
• Open Access Article
  • Abstract Page
  • Full-Text
  
  4 - Application of spatial statistic in assessing canopy cover variation of rangeland plant species of sheep fescue
  amir hoseim kavian por ardavan ghorbani gholam ali heshmati
  According to the continuous changes in natural ecosystems, particularly rangelands, and variety of affecting factors and the cost of direct measurement, the application of new techniques in different studies is necessary. In this study the capability of spatial statisti More

  According to the continuous changes in natural ecosystems, particularly rangelands, and variety of affecting factors and the cost of direct measurement, the application of new techniques in different studies is necessary. In this study the capability of spatial statistical techniques in the assessment of canopy cover variation of Festuca ovina L. species was investigated. Canopy cover was recorded using plots at 45 sites. Then Inverse Distance Weighted (IDW) and Kriging were used for interpolating and estimating of F. ovina canopy cover using GS+5 and ArcGIS10. Results showed that the best variogram was exponential, and simple and ordinary Kriging were the best interpolation methods in comparison with the other methods according to the results maps accuracy assessments. Effective range of F.ovina canopy cover (48300 meter) is close to some chemical and physical soil properties including, acidity in the second depth (51500m), and organic matter in the second depth (47710m), clay in the first depth and sand in the first and second depths (49400m). Spatial variability of mentioned soil characteristics have affected the percentage of F. ovina canopy cover and at the distance greater than effective range, samples have no spatial dependence. To investigate the relationships between mentioned soil characteristics and canopy cover of F. ovina, and the optimal sampling interval can be considered between 47710 to 49400 meters. Results of this study show that spatial statistic can be used for evaluating canopy cover of rangeland species variability. Manuscript profile
• Open Access Article
  • Abstract Page
  • Full-Text
  
  5 - Evaluation of Profitability of Seed Priming for Improvement Seed Germination Performance of Two Rangeland Plants (Festuca ovina and Bromus tomentellus) under Drought Conditions
  Hamdollah Eskandari Ashraf Alizadeh Amraie
  Manuscript profile
• Open Access Article
  • Abstract Page
  • Full-Text
  
  6 - Determination of Nutritional Value in Three Forage Species in Three Phonological Stages in Sabalan Rangelands, Ardebil, Iran
  Abazar Ghanbari Mahmood Sahraei
  Manuscript profile
• Open Access Article
  • Abstract Page
  • Full-Text
  
  7 - The effect of water salinity on some growth parameters of four grasses in Sistan region
  Ramin Babadaei Samani mahdie salari
  Today, grass is widely used in landscape. So, it is important to understand the various environmental stresses such as salinity. Thus an investigation was performed as factorial based on completely randomized design with three replications. The studied factors included More

  Today, grass is widely used in landscape. So, it is important to understand the various environmental stresses such as salinity. Thus an investigation was performed as factorial based on completely randomized design with three replications. The studied factors included four type of lawn, namely: Poa pratensis, Cynodon dactylon, Lolium perenne and Festuca rubra with different levels of sodium chloride (0, 0.5, 1, 1.5 and 2 percent equal to 0, 6.25, 12.5, 18.75 and 25 dS/m). The results showed that all plant growth indices (shoot fresh and dry weight. stem height, tiller number and root length and weight) were decreased by increasing salt concentration. In this case, plants had the lowest growth at 2% salinity. Salinity had minimal effect up to 0.5 % and in most cases, there was no significant difference compared with the control plants. But from 1% of salinity and above all indices were affected by salinity stress and were significantly decreased compared with 0%. In most cases, Poa and Lolium growth parameters were not significant and almost had the same growth. In all cases Cynodon had the highest growth parameters. In addition, it significantly differed from three other genera. Furthermore, the findings of this study showed that Cynodon had greater growth parameters rate than the other three lawns in all salinity levels. Manuscript profile