Effects of Seasonal Changes (The Spring and The Autumn) on Microbial Population of the Surface Soils Planted the Various Tree Species | Author : Hasan Hüseyin Koç, Hatice Nur Yişil, Ayten Öztürk | Abstract | Full Text | Abstract : Microbial population of soil and its structure is affected with chemical and biological changes such as plant-root secretions. Upper layer of the soil is exposed to mixture of stems, fruiting bodies and leaves of trees. Seven trees growing at same area were chosen. Their upper layers of the soil were collected from depth 5-10 cm as samples in spring and autumn. Their microbial populations were investigated in order to determine in terms of climate changes. In order to determine the number of the total microorganisms, gram-negative bacteria and spore-forming bacteria (cfu/g) were used by the serial dilution techniques. As a result, the highest numbers of microorganisms from the soil of the apple tree were determined as the total microbial count in the autumn, although the lowest number of microorganisms was obtained from the soil of the pine tree. However, the number of the gram-negative bacteria was the highest in the soil of linden tree, although the number of gram negative bacteria was the lowest in the soil of apricot, mulberry and apple trees. For spore - forming bacterium, the highest number from the mulberry soil and the lowest number from the linden tree have been obtained. In the spring, the highest numbers of microorganisms from the soil of the apple tree were obtained as the total microbial count, although the lowest number of microorganisms was obtained from the soil of the apricot tree. For the number of the gram-negative bacteria was the highest in the soil of walnut tree, although the number of gram negative bacteria was the lowest in the soil of apricot trees. However spore - forming bacterium, the highest number from the soil of the poplar tree and the lowest number from the mulberry tree have been obtained. In general, the rich diversity of the microbial population was shown morphologically in autumn. |
| Impacts of the Climate Change on Agricultural Food Security, Traditional Knowledge and Agroecology | Author : Murat Türkeş | Abstract | Full Text | Abstract : This paper focuses mainly on both impacts of the climate change on agriculture and food security, and multidisciplinary scientific assessment and recommendations for sustainable agro ecological solutions including traditional knowledge responding to these impacts. The climate change will very likely affect four key dimensions of the food security including availability, accessibility, utilization and sustainability of the food, due to close linkage between food and water security and climate change. In one of the most comprehensive model studies simulating impacts of global climate change on agriculture to date, it was estimated that by 2080, in a business-as-usual scenario, climate change will reduce the potential output of global agriculture by more than 3.2 per cent. Furthermore, developing countries will suffer the most with a potential 9.1 per cent decline in agricultural output, for example with a considerable decrease of 16.6 per cent in Africa. Some comprehensive studies pointed out also that all regions may experience significant decreases in crop yields as well as significant increases, depending on emission scenarios and the assumptions on effectiveness of carbon dioxide (CO2) fertilization. One of the tools that would ensure the food security by making use of local sources and traditional knowledge is agroecology. Agroecology would contribute to mitigation of the anthropogenic climate change and cooling down the Earth’s increasing surface and lower atmospheric air temperatures, because it is mainly labour-intensive and requires little uses of fossil fuels, energy and artificial fertilisers. It is also necessary to understand the ecological mechanisms underlying sustainability of traditional farming systems, and to translate them into ecological principles that make locally available and appropriate approaches and techniques applicable to a large number of farmers. |
| Soil Formation and Taxonomy in Yeşilırmak River Terraces | Author : Alper Durak, Mehmet Erdem Aydın | Abstract | Full Text | Abstract :In this study, the soils of which parent material is alluvial and formed Yeşilırmak river terraces were investigated. For this purposes four different profiles were excavated in the study area. Then twenty-seven soil samples were taken from horizons of four profiles and their physical and chemical analyses were done for soil taxonomy research. Profile of Kumocagi and Cakil were classified in subgroup as Typic Ustipsamments, Havaalanı and Mera profiles were classified Typic Haplustolls and Typic Argiustolls subgroups respectively. The pH values of soils varied between 7.38-8.41. These soils can be classified as low and highly basic. Most of the soil series had an irregular pH distribution in the profile. The range of carbonate content of the soils was 0.8-25.4%. Although carbonate content of soils showed a very wide range, majority of them can be classified as highly calcareous. In most of soils carbonate content was distributed irregulary in the profile. Organic matter content were between 0.14-6.11% in the soils. Although organic matter contents of the soils changed in a wide range most of them had low organic matter content. Organic matter content was over 4% in the surface horizon of only two profiles. Research result showed that, alluvial parent material, particle size, topograpy and time have different effect on investigation soils. |
| New Alternative Protein Sources Used in Poultry Nutrition | Author : Mehmet Akif Özcan | Abstract | Full Text | Abstract :Nowadays, the assessment of oilseed plants, biofuels and human food which is indispensable in the future is used widely in poultry feed, soybean inevitable negative effect on the use of mixed feeds. Therefore, as an alternative to soybean sources to reveal a new requirement arises. In recent years, alternative protein sources to leaves, stems, marine algae, bacteria and insects as well as proteins from sources and for use in animal feeding studies are conducted and their performance in poultry studied. In this review, alternative protein sources and their effects on the health status of poultry in different yield and literature will be presented. |
| Current Situation, Problems and Solutions of Bean in TR71 Region | Author : Sevgi Çalışkan | Abstract | Full Text | Abstract : The common bean (Phaseolus vulgaris L.) is the most widely grown edible legume species in the world. Its acreage is 28.8 million hectares and production is 23.1 million tons. It ranks third among legume crops after chickpea and lentil with acreage of 93.174 hectare and production of 200.000 tons in Turkey. TR71 Region covers the provinces of Kırıkkale, Aksaray, Niğde, Nevşehir and Kırşehir. In this study, current situation of common bean agriculture is discussed. TR71 Region which has 12.6% of cultivation area and 13.8% of production of common bean in Turkey and seed yield is 234 kg da-1 in TR71 region. Niğde which had the first rank in terms of cultivation area and as well as production amount in the common bean, constituted 38.16% of cultivation area and 45.90% production amount. Becoming widespread of common bean cultivation in fallow fields will make great profits to as well as farmers in the region and as well as country's economy in TR71 Region of Turkey which is about 30% of arable land. |
| Determination of Some Quality Criteria of the Kefir Produced with Molasses and Plum | Author : Tuğba Kök Taş, Erkut İlay, Ayla Öker | Abstract | Full Text | Abstract :The aim of this study is to determine the quality characteristics of kefir by developing different flavours in order to increase its consumption. Plum (10%) and molasses (7.5%) which are rich in phenolic contents are used to produce kefir in different flavours. Chemical analysis (pH, titratable acidity, dry matter and colour), microbial analysis (total microorganism, Lactobacillus spp, Lactococcus spp. and yeast counts), total antioxidant activity (by ORAC method), total amount of phenolic contents and sensorial properties of all kefir samples were carried out at the 1st, 7th and 14th days of storage. Consequently, the results of pH, titratable acidity and dry matter in the kefir samples were determined to change between the values 4.11-4.39; 0.22-0.30 and 11.9-17.02% respectively, during the storage. In the colour analysis, the redness colour parameter of the kefir sample produced using molasses was determined to be higher compared to the other kefir samples. At the first day of storage, the total antioxidant contents of the control group kefir, plum- added kefir and molasses-added kefir samples were determined as 13.30; 16.80 and 17.35 µmol ml-1; and the total phenolic contents as 945.70; 2535.8 and 2357.6 mg ml-1, respectively. Content of total microorganism in kefir samples varied between 8.91-9.80 log kob ml-1during the storage period. Lactobacillus spp. and Lactococcus spp. contents of kefir produced using molasses were determined to have the highest values with 9.11 and 9.91 log kob ml-1, respectively, at the first day. Yeast content of the plum kefir and the molasses kefir samples including sugar was detected to be higher than that of the controlled kefir sample. According to the results of the sensory analysis, the kefir produced with plum was approved the most by the panelists. As a result of this study, two alternative products with quite high total phenolic content and antioxidant activity were developed for consumers. |
| The Analysis of the Factors Affecting Fruit Mineral Water Preferences By Logit Model: The Case of Beypazarı | Author : Rüveyda Kızıloğlu, Halil Kızılaslan, Nuray Kızılaslan | Abstract | Full Text | Abstract : This study aimed to determine the factors affecting the consumption of fruit mineral water by households living in the urban areas in Beypazari. The main material of the study consisted of data collected through a questionnaire from 240 households. The study also aimed to reveal the features of the households and the preferences, tastes and thoughts of the households affecting the consumption. Binary Logit Regression method was employed to determine the factors affecting the fruit mineral water consumption. Seven variables affecting the likelihood of fruit mineral water consumption were identified based on the regression analysis employed. The companies in food industry are expected to increase the number of their consumers while they are determining their strategies to raise income rates or while they are increasing the current potential through studies aiming women and young people. |
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