Gümüşhane ÜniversitesiGümüşhane ÜniversitesiAçık Erişim Arşivi · RDL Open

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  • MakaleYalnız künye2020
    Plasticity in behavior of Turkish malting barley cultivars under semi-arid and continental climatic conditions

    Sirat, Abdulveli; Bahar, Bilge

    This study aimed to select stable cultivars in terms of desired agronomic or quality criteria from among 15 two rowed barley cultivars that may remain stable in varying year conditions during 2014-2015 and 2015-2016. Furthermore, relationships among these traits were investigated. Some agronomical and quality traits of barley were affected by years and cultivars. Yield, yield components and some quality parameters were affected by the cultivars. Also, days to ripening was affected by years, cultivars, and year x cultivar interaction. Crude protein content (CPC) was significantly positive correlated with ASH during both seasons. Starch ratio (SR) showed significantly negative correlations with ASH and CPC during both seasons. ADF and NDF had significant positive strong correlation with one another and ASH during both years while they showed significant negative correlations with SR. The results show that technological properties are not affected by the interaction of cultivar x year; therefore, these stable cultivars can be readily used in malt or feed technology if their technological features are considered. For example, cv. Unver contained low ratios of ash, CPC, oil, soluble fiber and high SR in the malt industry; cv. Hasat which includes the opposite technological properties of cv. Unver, was found be suitable for use in feed technology.

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  • MakaleYalnız künye2020
    Characterization and selection of alfalfa cultivars based on agronomic and quality characteristics information from continental climatic conditions of turkey

    Karakoy, Tolga; Nadeem, Muhammad Azhar; Ton, Aybegun; Celisiz, Yeter; Anlarsal, Adem Emin; Hatipoglu, Rustu

    Alfalfa is one of the most important crops mainly grown for forage and hay production in the world. Present study was aimed to investigate the green herbage and hay yield as well as some quality parameters such as acid detergent fiber (ADF), neutral detergent fiber (NDF), digestible dry matter (DDM), crude protein, dry matter contents, organic matter, crude oil and raw fiber of 9 different alfalfa cultivars. This study was conducted during two consecutive years (2015 and 2016) at two locations in Turkey (Sivas -Center and Sivas-Altinoluk). The mean values of ADF, NDF, DDM, crude protein (CP), green forage yield and dry forage yield were 43.73%, 52.69%, 50.70%,19.71%, 59163 kg ha- 1 and 13866 kg ha- 1 respectively. Dry forage yield reflected a positive and highly significant correlation with plant height, number of tillers and fresh forage yield. The varieties called Delta and Azzura performed very well for both locations during the whole period of study and also expressed a great level of winter resistance. Kayseri is a local cultivar in Turkey and it is revealed to be poor in terms of all the studied traits. According to the results of the study, it was concluded that the cultivars, Delta and Azzura, could be successfully grown in the continental climate regions of Turkey, and they could be also used in the breeding program of alfalfa to develop alfalfa varieties with high winter resistance and high yield and quality of forage.

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  • MakaleYalnız künye2020
    Effect of concentration and drying processes on physical and chemical properties of strawberry {arbutus unedo l.) leather (pestil)

    Kerse, Sevgi; Okcu, Zuhal

    In this study, producting with different concentration of starch (%5 ve %8) and different dried methods (in drying oven 60 °C, 80 °C, microwave oven and conventional drying methods arbutus leather is analysed in terms of physical, chemical and sensory parameters. Fruit is more ascorbic acid, total phenolic, antioxidant activity than other leathers. Fruit leathers which contain %8 starch, values are high than leather produced in different concentratioas exclusive HMF value. Fruit leather which dried conventional methods has high value of total dry matter, water soluble dry matter, total sugar, invert sugar,sucrose, ascorbic acid and ABTS values. Fruit leather which dried in micro waveoven has highvalue of ash, total phenolic, DPPH and HMF value. Leathers, which is most appreciated in sensory evaluation, is pestil dried at 60 °C.The least appreciated was the microwave-dried leather.

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  • MakaleYalnız künye2019
    Mapping Istanbul quarry mining region using Landsat 8 OLI&TIRS data

    Balcik, Filiz Bektas; Topaloglu, Raziye Hale; Goksel, Cigdem

    Open mining operations have brought number of environmental challenges, which may result in soil erosion, dust, noise, water pollution, and severe impacts on biodiversity. Determination of the mining activities and its surrounding environment is a major issue in sustainable resource management. Many remote sensing indices have been developed and widely applied as an effective tool to determine different land surface types. The main objective of this study was to determine quarry mines and its surroundings land use and land cover (LULC) categories in the selected study area of Istanbul using different remote sensing indices including Tasseled Cap Transformation (Brightness, Greenness and Wetness) and Normalized Difference Bareness Index (NDBals). In this study, an open mining area in the northern Black Sea coastal part of Istanbul was selected as study area. Freely available Landsat 8 OLI & TIRs image was used to determine quarries and land cover/ land use categories in the concerned area. By using original bands of Landsat 8 OLI, TCT components and NDBal, three different data sets were created. Each image was then separately subjected to support vector machine classification and processed to identify and quantify LULC categories. The accuracy of classification results were evaluated in a comparitive manner using error matrix. Data set C had the highest overall accuracy and Kappa statistics that were calculated as 83.00 and 0.80, respectively.

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  • MakaleYalnız künye2019
    Object based classification of unmanned aerial vehicle (UAV) imagery for forest fires monitoring

    Baha Bilgilioglu, B.; Ozturk, Ozan; Sariturk, Batuhan; Seker, Dursun Zafer

    In case of fire, determination of burned trees and fire direction is very important. Until now, satellite images and aerial photographs have been widely used in forest fire studies. However, these data can be ineffective in terms of temporal and spatial resolution. In recent years, due to high resolution of provided images, use of Unmanned Aerial Vehicle (UAV) rapidly increased in forest related monitoring studies. Images obtained soon after the forest fires by means of UAVbecome the most important data to evaluate the damage level in the forestry area using different classification techniques. Conventional image classification methods are inefficient for evaluation of high resolution images. However, object-based classification is more accurate than conventional methods. Because, this method uses spectral, neighborhood, texture, hierarchy and size based relationships. In this study, forest fires occurred in Camburnu Natural Park in Surmene District of Trabzon Province located in the Black Sea Region of Turkey was selected as the study area. To determine the destroyed area, high resolution UAV images of the study area were obtained and image pre-processing steps were employed. Object-based classification and pixel-based classification have applied to these images. The boundaries of destroyed forest have been extracted by means of two classification methods. Additionally, combining of these two classification results was investigated to improve the results of the burned area.

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  • MakaleYalnız künye2018
    In vitro antioxidant and antimicrobial activities of the five different solvent extracts of Centaurea pulcherrima var. Freynii from Turkey

    Ozcan, Kadriye; Acet, Tuba

    Various extracts of Centaurea pulcherrima var. freynii were investigated for total phenolic, flavonoid, antioxidant and antimicrobial activities. The antioxidant properties of plant extracts were evaluated by free radical scavenging assays (DPPH and ABTS). Antimicrobial activities were examined using disc diffusion methods. According to the results of antioxidant capacity assays, the plant showed moderately antioxidant activity in test methods. It was found that ethyl acetate extract showed the most effective activity including total phenolic, flavonoid, antioxidant and antimicrobial activities.

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  • MakaleYalnız künye2015
    The effects of land use type on soil erodibilty indices in Galyan-Atasu Dam Watershed, Trabzon, N.E. Turkey

    Yilmaz, Murat; Usta, Ayhan; Çakir, Günay; Kahveci, Seda Nur Ince

    Erodibility indices together with other soil properties of Atasu Dam watershed in Trabzon, Turkey, were analyzed according to land use regimes (grassland, cultivated land, coniferous forest land and broadleaf forest land) and the granite parent material from which the soil develops. The findings could be applied to future management plans with the aim of enhancing the ability of Atasu Dam to supply water for drinking, domestic use and irrigation to the region. Forty sample plots having the same northern aspect were selected from bordering lands. Cross-section soil samples from depth levels of 0-10 cm and 10-30 cm were gathered from the selected sites. Particle size distribution, soil organic matter (SOM), dispersion ratio (DR), erosion ratio (ER), colloid-moisture equivalent ratio (C-MER), structural stability index (SSI), water dispersible clay (WDC), clay dispersion ratio (CDR), clay flocculation index (CFI), exchangeable cations, exchangeable sodium ratio (ESR), sodium adsorption ratio (SAR) and soil reaction (pH) analyses were performed. A variance analysis was carried out in order to determine if the obtained results varied according to land use type. Soil samples from a variety of sites in areas with granite as parent material were applied to erodibility indices and the sites were found to be susceptible to erosion. Some other characteristics were also found to be effective on the erodibility indices, including the relationship of soil organics, which was also considered to be to a factor of interest in this study. Soils that were developed from granite parent material in areas covered by forest were observed to be more susceptible to erosion. These results were fairly significant in the context of the study area of the Galyan-Atasu Dam watershed. This study suggests that incorporating these findings in planning and management-related activities can potentially lead to improvement of the basin and contribute to the economic life of the dam.

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