Browsing by Author "Cimrin, K. Mesut"

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Effect of Elemental Sulphur on Heavy Metals Solubility and Remediation by Plants in Calcareous Soils
(Parlar Scientific Publications (p S P), 2007) Cimrin, K. Mesut; Turan, Metin; Kapur, Burcak
Sewage sludge application may lead to the accumulation of a number of potentially harmful components, such as heavy metals, in the applied sludge possibly resulting in phytotoxic effects, soil and water contamination, and accumulation of heavy metal in food supplies. A pot experiment was conducted to compare the relative efficiency of elemental sulphur application in enhancing Ph and Cd phyto-extraction, and to increase Ph and Cd desorption from heavy metal-contaminated soil. Two rates of elemental sulphur (S) applied at 0 (SO) and 300 (S300) mmol kg(-1) soil with three rates of each metal at 0, 200, and 400 mg kg(-1) Pb(NO3)(2) and 0, 50 and 100 mg kg(-1) Cd (CdCl2). Six corn plants were grown for 42 days in pots of contaminated calcareous soil. Results indicated that with S application at 300,mmol S kg(-1) soil pH decreased by 0.5 unit, and solubility of both Ph and Cd was significantly increased. The concentration of Fe, Mn, Zn, Cu, Ph and Cd in maize shoots and roots were increased with increasing rates of heavy metals. However, the concentrations of Pb and Cd in shoots and roots were higher with application of S than without S. Root Fe, Mn and Zn uptake rates were higher than those of shoot, whereas Pb and Cd uptake of shoot was greater than that of roots in corn plants. Plant yield was also significantly affected by application of S and heavy metals. With heavy metal addition, the shoot and root biomasses were decreased with rates of heavy metal increase, either with or without application of S. The removal of Pb and Cd by maize uptaken from the soil increased by application of S within a growth period of only 42 days. As a conclusion, it can be said that sulphur application facilitated Fe, Mn, Zn,Cu, Pb and Cd phyto-extraction, and this may provide an effective soil decontamination strategy in calcareous soils.
Phosphorus and Humic Acid Application Alleviate Salinity Stress of Pepper Seedling
(Academic Journals, 2010) Cimrin, K. Mesut; Turkmen, Onder; Turan, Metin; Tuncer, Burcu
Humic acid is a commercial product that contains many elements which improve the soil fertility and increase the availability of nutrient elements. It consequently affects plant growth and yield and ameliorates the deleterious effects of salt stress. The objective of the study was to determine the effect of humic acids and phosphorus on growth and nutrient content of pepper seedlings (cv. Demre) grown under moderate salt stress in growth chamber conditions. Applications of different levels of phosphorus [0 (P(0)), 50 (P(1)), 100 (P(2)) and 150 (P(3)) mg kg(-1)] and humic acid [0 (HA(0)), 750 (HA(1)) and 1500 (HA(2)) mg kg(-1)] to growing media containing moderate salt dose (8 mM NaCl treatment) were studied. The study was replicated four times with 20 plants in each replicate. Humic acid (HA) and phosphorus applications increased the growth and growth parameter of plants. In company, effects of HA and P application was more effective on growth and growth parameter than each separate effect. The optimum total yield was obtained from 69 mg kg(-1) P application with HA2 doses according to regression analysis. Humic acid application significantly increased N, P, K, Ca, Mg, S, Mn and Cu contents of shoot of pepper seedling. Also, N, P, K, Ca, S, Fe, Mn, Zn and Cu contents of root were increased with humic acid application. Na contents of both shoot and root of pepper decreased with increased humic acid doses. It can be concluded that high humic acid doses has positive effects on salt tolerance based on the plant growth parameters and nutrient contents. The present study suggests that HA treatments can ameliorate the deleterious effects of salt stress on pepper plants and HA could offer an economical and simple application to reduce problems of pepper production in moderately saline soil.