Yazar "Surucu, Abdulkadir" seçeneğine göre listele

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    Determination of Appropriate Extraction Methods for Available Iron, Copper, Zinc and Manganese in Acid Soils
    (Galenos Publ House, 2013) Surucu, Abdulkadir; Ozyazici, Mehmet Arif; Ozyazicic, Gulen; Uygur, Veli
    Since the performance of the chemical extraction methods are largely dependent on the soil characteristics many methods have been developped towards determining the availability index of plant nutritions in soils. Thus, this research was conducted to select the most suitable chemical extraction method and/or methods for available Fe, Cu, Zn, and Mn concentrations in acid soils of Rize and Artvin regions. In the research, total of 220 both soil and plant samples were collected by considering the tea production potentials of orchards at second harvesting period. 197 samples for Fe, 207 samples for Cu, 214 samples for Zn, and 196 samples for Mn were used to test methods' efficiency in estimating nutritional status of both soils and plants. Plant available soil Fe, Cu, Zn, and Mn concentrations were determined by using 14 different chemical and 2 biological methods. The linear correlation coefficients between available Fe, Cu, Zn, and Mn concentrations determined through the chemical methods and the biological indexes indicated that the best extraction methods for cationic microelements in acid soils are: 0.05 N HCl + 0.025 N H2SO4 for Fe, 0.005 M DTPA+0.01M CaCl2+0.1 M TEA (pH=7.3) for Cu and Zn, and 0.01 M CaCl2 for Mn.
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    EFFECTS OF GREEN MANURING ON SOIL ENZYME ACTIVITY
    (Parlar Scientific Publications (P S P), 2014) Surucu, Abdulkadir; Ozyazici, Mehmet Arif; Bayrakli, Betul; Kizilkaya, Ridvan
    In this research, the effects of faba bean (Vicia faba L.) used for green manure and forage production as a winter catch crop on some soil biological properties were investigated. The field experiments were conducted in carsamba Plain located in the north region of Turkey. The green manuring-maize-wheat crop rotation with a randomized complete block with four replications was repeated in two separate years. The treatments used to investigate the management effect on soil enzyme activity were: (GM1-GM4) burying the whole above ground faba bean plant as green manure, (GM5-GM8) burying the under ground-stubbles of plants and (C1-C2) control. Different nitrogen doses of 0, 60, 120, 180 kg N ha(-1) for maize, and 0, 50, 100 and 150 kg N ha(-1) for wheat were applied following the green manuring. The results revealed that both types of green manure applications provided an increase in urease and dehydrogenase contents of soils compared to the control. The urease (UA) and dehydrogenase (DH) activities were higher with above ground parts of faba been application when compared to application of the underground stubbles. The activity of the UA and DG were significantly (P<0.05) influenced at the end of the maize harvest in the GM amended soils. At the end of the maize harvest, significantly (P<0.05) highest VA activity (205.1 mu g N l(-1) dry soil) was observed in the GM1 treatment compared to the control soil. While, the lowest UA activity was recorded in the GM5 (178.4 mu g N l(-1) dry soil).
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    Modeling and mapping the spatial variability of soil micronutrients in the Tigris basin
    (Elsevier, 2023) Gokmen, Veysel; Surucu, Abdulkadir; Budak, Mesut; Bilgili, Ali Volkan
    Background: Crop production is negatively impacted by excess and lack of soil micronutrients. Due to anthropogenic and natural factors, soil micronutrients vary greatly in space, necessitating time- and money-consuming large-scale sampling. Therefore, modeling their spatial distributions and forecasting in non-sampled areas are essential for high crop production. Methods: In this study, regional variations in soil micronutrient content of the Upper Tigris Basin were modeled to produce local change maps for the development of site-specific nutrient management systems. The concentrations of extractable zinc (Zn), copper (Cu), manganese (Mn), and iron (Fe) in soil samples taken at 388 different sites between 0 and 20 cm deep were determined. Using variogram and kriging analyses, the spatial distribution of the micro element concentrations was modeled and mapped in a GIS environment. Results: The micronutrients demonstrated significant variability with a high coefficient of variation (CV > 35%). It was found that the spatial dependence of the samples ranged from low for Fe and Cu to high for Zn and Mn. The spatial distribution of soil micronutrients was influenced by soil texture in addition to distance. Overall, the results demonstrated that the management of site-specific micronutrients may be aided by the integration of geostatistics and GIS, which is particularly beneficial in terms of effective management of the lands and the optimal use of inputs. Conclusion: Overall, the findings showed that the integration of geostatistics and GIS may be helpful in the management of site-specific micronutrients, which is especially advantageous in terms of efficient management of the lands and the best use of inputs.(c) 2023 The Author(s). Published by Elsevier B.V. on behalf of King Saud University.
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    SPATIAL VARIABILITY OF SOME SOIL PROPERTIES IN AN AGRICULTURAL FIELD OF HALABJA CITY OF SULAIMANIA GOVERNORATE, IRAQ
    (Parlar Scientific Publications (P S P), 2019) Surucu, Abdulkadir; Ahmed, Tavan K.; Gunal, Elif; Budak, Mesut
    The soils of Sulaimania Governorate have been used to meet food demand of people in northern Iraq. Longstanding wars and strict trade restrictions have caused farmers of the region facing difficulties in sustaining the agricultural production. Although soils have been subjected to agricultural production practices and are susceptible to degradation, reliable information on soils of the region is not available. This study has been carried out to characterize some physical and chemical soil properties and to determine the spatial structure of soil properties in a 100-ha agricultural field of Halabja at Sulaimania governorate, Iraq. The study area was divided into 100 x 100 m grid squares, and 100 soil samples were collected from the corners of each grid representative of the surface (0-20 cm) horizons. In addition, a total of 16 soil samples was taken along four transects with sampling intervals of 5, 10, 40 and 50 m. The measured properties were: clay, sand, silt, calcium carbonate and organic matter contents, exchangeable cations (Na, K, Ca, and Mg), micronutrients (Fe, Zn, Cu and Mn) and plant available phosphorus (P) concentrations, pH and electrical conductivity. The data were analyzed using classic statistics and geostatistics by constructing semivariograms and mapping by ordinary kriging. Semivariograms were calculated for soil characteristics and their spatial distributions were mapped. Soils were poor in available P and Zn contents. Soil organic matter showed significant positive correlations with EC, P concentration, clay content, extractable Ca and Na concentrations whereas the correlation was negative with sand content and Zn concentration. Nugget/sill ratio for modelled variables indicated high and moderate spatial dependences. The range of spatial dependence varied from 102 m (calcium carbonate) to 1248 m (pH). The distribution maps of soil attributes could be utilized as a guide for site-specific crop management in similar soils.
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    Spatial variability of some soil properties in an agricultural field of Halabja city of Sulaimania Governorate, Iraq
    (Parlar Scientific Publications, 2019) Surucu, Abdulkadir; Ahmed, Tavan K.; Gunal, Elif; Budak, Mesut
    The soils of Sulaimania Governorate have been used to meet food demand of people in northern Iraq. Longstanding wars and strict trade restrictions have caused farmers of the region facing difficulties in sustaining the agricultural production. Although soils have been subjected to agricultural production practices and are susceptible to degradation, reliable information on soils of the region is not available. This study has been carried out to characterize some physical and chemical soil properties and to determine the spatial structure of soil properties in a 100-ha agricultural field of Halabja at Sulaimania governorate, Iraq. The study area was divided into 100 x 100 m grid squares, and 100 soil samples were collected from the corners of each grid representative of the surface (0-20 cm) horizons. In addition, a total of 16 soil samples was taken along four transects with sampling intervals of 5, 10, 40 and 50 m. The measured properties were: clay, sand, silt, calcium carbonate and organic matter contents, exchangeable cations (Na, K, Ca, and Mg), micronutrients (Fe, Zn, Cu and Mn) and plant available phosphorus (P) concentrations, pH and electrical conductivity. The data were analyzed using classic statistics and geostatistics by constructing semivariograms and mapping by ordinary kriging. Semivariograms were calculated for soil characteristics and their spatial distributions were mapped. Soils were poor in available P and Zn contents. Soil organic matter showed significant positive correlations with EC, P concentration, clay content, extractable Ca and Na concentrations whereas the correlation was negative with sand content and Zn concentration. Nugget/sill ratio for modelled variables indicated high and moderate spatial dependences. The range of spatial dependence varied from 102 m (calcium carbonate) to 1248 m (pH). The distribution maps of soil attributes could be utilized as a guide for site-specific crop management in similar soils. © 2019 Parlar Scientific Publications. All rights reserved.