Majid Dashti; Hamed Zarif Ketabi; Asghar Paryab; Hosein Tavakoli
Volume 12, Issue 2 , September 2019, , Pages 153-166
majid dashti; Ali ashraf Jafari; hamed zarif ketabi; farideh saghafi khadem
Volume 22, Issue 4 , March 2015, , Pages 683-694
Abstract
In order to determine the effects of phenological stages and the best harvesting time for yield and quality traits in Elymus hispidus (var. hispidus var. podperae var.villosus), an experiment was conducted in Cisab Research Station, Northern Khorasan, Iran during 2005-2006. The seeds of varieties were ...
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In order to determine the effects of phenological stages and the best harvesting time for yield and quality traits in Elymus hispidus (var. hispidus var. podperae var.villosus), an experiment was conducted in Cisab Research Station, Northern Khorasan, Iran during 2005-2006. The seeds of varieties were sown in a randomized completely block design (RCBD) with three replications under dryland farming system. Forage yield was cut at six phenological stages including vegetative, stemmy, ear emergence, milky, soft dough seeds and maturity. Dry matter (DM) yield and five quality traits including Dry Matter Digestibility (DMD), Water Soluble Carbohydrates (WSC), Crude Protein (CP), Acid Detergent Fiber (ADF) and total Ash were estimated using Near Infra-Red spectroscopy (NIRS). Data were analyzed using a split-plot in time design. Results showed significant differences for all traits among the phenological stages. DMD, CP, and ash were highest when the plants were immature and tend to drop sharply as the plants go to soft dough stage. In contrast, the average values of ADF and DM yield increased from vegetative to soft dough stage. WSC values were inconsistent over different phenological stages. Var. villosus with average values of 50.3, 16.3, and 10.1 percent for DMD, CP, and WSC, respectively had higher quality as compared with other two varieties. Var. hispidus with average values of 1433 Kg/ha DM yield had higher production as compared with two other varieties. However, its quality was low. The results showed that the highest digestible yield and protein yield were obtained in ear emergence stage for varieties. The results of correlation analysis showed positive and significant relationship between DMD and both CP and ASH. Whereas, ADF and same traits was negatively correlated. The correlation between DM yield and WSC with both DMD and CF was low and inconsistent over six phenological stages.
Majid Dashti; Amrali Shahmoradi; Hamed Zarif ketabi; Asghar Paryab; GHolamreza Hosseini-Bamrood; Sadegheh Zarekia
Volume 16, Issue 3 , December 2009, , Pages 401-408
Abstract
Salsola orientalis S .G.Gmelin is a perennial plant species of chenopodiaceae family. Because of its palatability, as a range plant, and recent drought it has been overgrazed in a way that it was eliminated in some areas, or only the individual plants of this species could be found. This research was ...
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Salsola orientalis S .G.Gmelin is a perennial plant species of chenopodiaceae family. Because of its palatability, as a range plant, and recent drought it has been overgrazed in a way that it was eliminated in some areas, or only the individual plants of this species could be found. This research was conducted to map the habitats of the plant in Khorasan region and investigate on its habitat characteristics (topographic, climatic, edaphic), phenology, regeneration, root system, density, and canopy cover. Results showed that elevation range for the habitats of this plant is 500-1500 meters above sea level. It could be found on different aspects and slopes of 5-40 percent. Annual precipitation and temperature are 150-400 mm and 10-17.5 degree centigrade, respectively. In most of its habitats, in Khorasan region, this plant is accompanied with dominant species of Artemisia diffusa, Artemisia sieberi, Poa bulbosa and some other species of genus Salsola. This range plant grows on moderately deep to deep soils with sandy loam to silty loam texture, acidities of about 7.4-7.8, and EC of 0.8-7.2 ds/m. It has a tap root system. So many small branch roots are connected to the main root. The root system can infiltrate into the soil to a depth of 1.5 meters. Phenology stages for Salsola orientalis showed that vegetative growth is from early March until early June. Flowering starts in late May. Seed ripening is in late October until mid November. Seed dissemination happens in late November until early December. Plant regeneration is via seeds. At phenological stage of seed formation, chemical analysis of forge portion resulted in 13.4% protein, 18.28% ashes, 2.62% calcium, and 26.19% fiber.