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    Effects of Sewage Sludge used as Fertilizer on Heavy Metal Contents of Bird's-Foot Trefoil (Lotus corniculatus L.) and Soil
    (Asian Journal Of Chemistry, 2012) Saruhan, V.; Gul, I.; Kusvuran, A.; Aydin, F.
    This study was carried out to determine the effects of the sludge which was provided from a wastewater refinement facility of Municipality of Diyarbakir on bird's-foot trefoil plant production and its soil properties. For this purpose, the increasing level of sewage sludge has been applied to the soil samples which are taken from the plant rotation field of Dicle University campus area in Turkey and this sludge was left. At the end of study, the chemical properties of the soil have been determined and the results have been compared statistically. In this study three times reiterated randomized blocks design type has been established in the pod to determine the effects of the sludge to the plants and also the mineral content (Hg, Cr, Zn and Ni) of bird's-foot trefoil plant. The sludge that was applied to the soil with increasing amounts, raised the heavy metal content of bird's-foot trefoil plant, but this raising did not line-out for allowable limit.
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    Öğe
    Effects of sewage sludge used as fertilizer on the yield and chemical contents of common vetch (Vicia saliva L.) and soil
    (Agricultural Research Communication Centre, 2015) Saruhan, V.; Kusvuran, A.; Kokten, K.
    This study was conducted to determine the effects of sewage sludge (SS) used as fertilizer at different concentrations [Control, 20 kg ha(-1) nitrogen (N), 30 ton ha(-1) SS (Si), 60 ton ha(-1) SS (S2) and 90 ton ha(-1) SS (S3), 20 kg ha(-1) N + 30 ton ha(1) SS (N+SI), 20 kg ha(-1) N + 60 ton ha(-1) SS (N + S2) and 20 kg ha(-1) N + 90 ton ha(-1) SS (N + S3)] on common vetch yields and chemical features. For this purpose, an increasing level of SS was applied to the soil samples. The residuals of some heavy metal (Hg, Cr, Fe, Ni, Zn, Mn, Cd, Pb, Cu, Co, and Se) and macro element (K, Ca, Na, Mg, C, and S) concentrations were measured in leafs, seeds and soils. According to the results of this study, SS, when applied to soil in increasing amounts, raised the mineral matter contents of the plants, which favorably affected plant growth. Accordingly, it affected the herbage yield, increasing the yield in parallel with the increasing SS concentrations. Applying N with the SS positively influenced the heavy metal contents on leafs and seeds of common vetch and residue in the soil. Besides, the heavy metal contents were found at below critical levels in the soil, leaf and seeds. Therefore, SS application as fertilizer used in appropriate concentrations did not pollute the soil very much, but did lead to an increase in plant products.