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Öğe Determination of Greenhouse Potential in Siirt Province and Districts by Using GIS and Recommendations to Producers(European Journal of Science and Technology, 2019-03-06) SALTUK, BURAKThe main source of income is livestock, and the most cultivated plant is pistachio (Pistacia vera) for agricultural purposes in Siirt and districts. Dry agriculture is practiced due to lackness of water sources and rainfall in the province. This limits the possibilities of generating income. The province is not sufficient in terms of agricultural production and migration from rural to other provinces is seen as a big social problem. In order to prevent this problem, agricultural supports have been increased and projects have been supported by government. However, greenhouse cultivation has not been adopted well enough in the region due to the fact that the climatic conditions are not perfectly suitable and the appropriate locations are not selected in the projects. In this study, appropriate location analyzes for greenhouses (climate and topography) were mapped with the geographical information system. In this way, it is aimed to increase the existing potential of the greenhouses of the province. An analysis was performed on open source QuantumGIS software during the study. The bioclimatic raster data set containing the climate data for the are were obtained from the World climate database. These sets, which contain temperature and precipitation data, are resolution 30 arc-seconds 1 km2. After the formation of raster maps containing temperature and rainfall values for the region, the climatic data are separated into three categories as suitable, partly suitable and unsuitable classes. In order to determine suitable areas, climate and structural features required for the greenhouse were obtained from the literature and the raster analysis was made. According to the results of the study, City center, Kurtalan, and Baykan were considered partially suitable for greenhouse cultivation and other districts were not suitable. However, due to the snow and wind loads that may occur in these districts, It has been found that greenhouses need to be constructed with structurally reinforced profiles and alternative energy sources are necessary for heating greenhouses. With the maps created by QuantumGIS, the areas that are currently being used for greenhouses are overlapping with results. In addition, according to the results of this study, structural and practical recommendations were made for the producers in the region.Öğe ENERGY EFFICIENCY OF GREENHOUSE TOMATO PRODUCTION IN TURKEY: A CASE OF SİİRT PROVINCE(Fresenius Environmental Bulletin, 2019-08-12) SALTUK, BURAKGreenhouse cultivation is one of the most important income generating branches of agricul-ture. The aim of this study is to do an analyze on energy efficiency of greenhouse tomato produc-tion in the season of 2018 in Siirt province and its sub-districts of Turkey. The energy input and output in greenhouse tomato production has been calculated as 104915.10 MJ ha-1 and 128000 MJ ha-1, respectively. Energy inputs consist of 33.39% (35030 MJ ha-1) chemical fertilizer energy, 19.24% (20184.08 MJ ha-1) human labor energy, 12.81% (13440 MJ ha-1) irrigation energy, 10.20% (10698.90 MJ ha-1) diesel fuel energy, 7.63% (80002.80 MJ ha-1) machinery energy, 6.75% (7084 MJ ha-1) chemi-cals energy, 1.41% (1475.20 MJ ha-1) transpor-tation energy and 0.01% (0.10 MJ ha-1) seed energy. Energy efficiency, specific energy, ener-gy productivity and net energy in greenhouse tomato production has been computed as 1.22, 0.66 MJ kg-1, 1.53 kg MJ-1 and 23084.92 MJ ha-1, respectively.Öğe A GEOGRAPHIC INFORMATION SYSTEM (GIS)-BASED MULTI-CRITERIA EVALUATION FOR GREENHOUSE SITE SELECTION: TIGRIS BASIN CASE STUDY(Fresenius Environmental Bulletin, 2018-12-12) SALTUK, BURAK; Artun, OzanGreenhouse agriculture is limited only by the shores of the Mediterranean and Aegean regions in Turkey. Greenhouse agriculture is not pre-ferred by producers in other regions. Especially when the Dicle basin is chosen as an example, it is necessary to heat the greenhouses in order to achieve the optimum conditions in cold seasons. However, heating costs even in temperate re-gions has a major share in the total production expenditure. For this reason, in our country, local heating is only applied to protect the plants from freezing in order to prevent regular heating in the greenhouses. Failure to achieve the re-quired level of climate conditions and the lack of heating brings with it problems such as low yield, limitation of production and the necessity of using the hormone. Greenhouses are climate controlled crop production facilities where in-door conditions can be controlled and kept in accordance with growing conditions. In green-houses if the production is required throughout the year, it is necessary to heat facility in the winter period. In Turkey, although almost all of greenhouse production is done in the Mediterra-nean Region, there are also a fairly limited area of production in Southeastern Anatolia Region. Climate, soil, wind, altitude, slope and aspect data are important in choosing the greenhouse location. In this study, a Geographic Information System (GIS) -based Multi-criteria evaluation for greenhouse site selection were applied in 5 prov-inces (Diyarbakir, Mardin, Siirt, Batman and Sirnak) of the Dicle basin by using these data. The validity of the results has been checked over with the field studies and also compared with the climatic conditions and production capacity of Adana Province, which is the third greenhouse production area in the Mediterranean Region. The suitable, non-suitable or partially suitable areas for greenhouse siting were determined in the basin by using GIS.Öğe MULTI-CRITERIA DECISION SYSTEM FOR GREENHOU-SE SITE SELECTION IN GEDIZ BASIN, TURKEY USING GEOGRAPHIC INFORMATION SYSTEMS (GIS)(Fresenius Environmental Bulletin, 2019-08-12) SALTUK, BURAK; Artun, OzanFast-growing population, climate change and increase in the residential area are causing a decrease in Turkey's agricultural land. This has led people to find different areas of production or to increase the quantity of products taken from the unit area. The way to continue produc-tion for 12 months is to increase greenhouse areas. In recent years, greenhouse production activities in Turkey have become a preferred agricultural sector, due to the government sup-port and the private companies' interest in this subject. The study covers 4 provinces (Izmir, Mani-sa, Usak and Kutahya) of the Gediz basin. In this study, it has been tried to determine suitable places for greenhouse activities in the study area by using Multi criteria Decision Analysis (MCDA) method and GIS. In the selection of greenhouse location; land use, climate, soil, wind, altitude, slope, aspect and the distances to the geothermal sources are important. A Geog-raphic Information System (GIS) -based Multi-criteria evaluation for greenhouse site selection were applied in 4 provinces (Izmir, Manisa, Usak and Kutahya) of the Gediz basin using these data. The suitable, nonsuitable or partially sui-table areas for greenhouse siting in the basin were determined in terms of GIS, for guidance to producers and researchers in the future. In the study, it is foreseen that, if the geothermal water is used in greenhouse heating, the energy costs of greenhouses and the impact of the geothermal waters on the environment will be reduced.Öğe Structural Analysis Example of Steel Construction Greenhouses(European Journal of Science and Technology, 2019-05-01) SALTUK, BURAKThe greenhouse is an agricultural structure which provides the necessary growth factors for plant production and enables the mechanization of the crops. Greenhouse cultivation is one of the most important income generating branches of agriculture. Nowadays, computer software’s are used for anything as it is being used for planning greenhouses, more robust construction and economical results are obtained this way. Business owners, investing their money in greenhouses, are copying the structural features of existing greenhouses with all wrong calculated parameters and errors. Leaving their valuable cash and future of their investment in the hands of an iron-smith. As a result, the greenhouses which are built without static and strength calculations, more materials are used, or insecure constructions are being applied. When an economic loss occurs depending on structural damage, it will unavoidably lead to economic losses for farmers and implicitly for the country. This study, emphasizes the structural Analysis of a one-span glass covered gable-roofed greenhouse, having an area of 720 m2 located in Antalya province. Structural analysis of the greenhouse was made with SAP2000 program. Mechanical properties of steel used in gable roofs, glass covered greenhouse's, theoretical load calculations are made depending on the TS 498 and TS EN 13031-1 Turkish standards. Variable loads on the greenhouse are calculated as distributed loads with classical methods by analyzing the gable-roofed glass-covered greenhouse according to load combinations (wind, plant, fixed) with SAP2000 program. Also, although there is not a big difference in terms of cost, greenhouse security is endangered as the required cross-section element is not used. With an optimized area of 720 m2, the greenhouse saves 2.736 kg of building material. An average of 11.8% of the building materials can be saved in 1 decare area. Considering the same load conditions; the use of SAP2000 analysis reduces the cost, and there is no change in strength.
