Browsing by Author "Gulser, Fusun"

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An Assessment of Pasture Soils Quality Based on Multi-Indicator Weighting Approaches in Semi-Arid Ecosystem
(Elsevier, 2021) Karaca, Siyami; Dengiz, Orhan; Turan, Inci Demirag; Ozkan, Baris; Dedeoglu, Mert; Gulser, Fusun; Ay, Abdurahman
The development of soil quality index in the vicinity of the Van Lake pasture lands located in the Northern East Part of Turkey under semi-arid terrestrial ecosystem is very important since there are certain degradation signs indicating how their sustainability is being threatened. A total of 150 soils in the pastures throughout the region were sampled and several soil physical, chemical and biological indicators were quantified. A minimum data set of the most sensitive indicators was chosen using principal component analyses. Linear scoring functions for these indicators were used to develop soil quality index integrated with remote sensing (RS) and geographical information system (GIS). In this current study, classes between SQIs calculated using the minimum data set (MDS) and total data set (TDS) approaches showed a parallel trend in each other and match analysis for agreement showed also a significant statistically relationship between TDSSQI/MDSSQI and REOSAVI in May and June months for pasture area. Furthermore, this study also showed that advance techniques (PCA, geostatistic, AHP-Fuzzy) and the technologies of RS and GIS, which are essential to the analysis and processing of original and generated information were used effectively by integrating each other for SQI in large area.
Determining Heavy Metal Contents of Hollyhock (Alcea Rosea L.) in Roadside Soils of a Turkish Lake Basin
(Hard, 2018) Kaya, Ilhan; Gulser, Fusun
This study was carried out to determine the heavy metal contents of hollyhock (Alcea rosea L.) in roadside soils of Van Lake Basin. The leaf samples of the hollyhock were taken from the roadside areas affected by heavy metal pollution due to intensive motorized traffic and from areas 30 m from the roadside by taking into account prevailing wind direction in 10 different locations. There were only significant differences for Mn, Cu, and Zn contents of leaves according to the sampling locations. The mean Fe (383.3 mg kg(-1)), Mn (50.2 mg kg(-1)), Cu (19.2 mg kg(-1)), Zn (23.9 mg kg(-1)), Cd (17.9 mg kg(-1)), Cr (5.1 mg kg(-1)), Ni (3.2 mg kg(-1)), and Pb (3.2 mg kg(-1)) contents of leaves sampled from roadside areas were significantly higher than mean heavy metal contents of leaves sampled from the areas 30 m from the roadside. The increasing ratios in mean heavy metal contents of leaves were ordered as Cd (309.3%) > Cr (248.9%) > Ni (130.6%) > Fe (75.9%) > Pb (64.3%) > Mn (40.6%) > Cu (26.1%) > Zn (22.7%). High heavy metal uptake by the plants grown near the roadside occurred due to pollution by intensive motorized traffic.
Effects of Calcium Nitrate and Humic Acid on Pepper Seedling Growth Under Saline Condition
(Triveni Enterprises, 2010) Gulser, Fusun; Sonmez, Ferit; Boysan, Sibel
This study was carried out in order to determine effects of calcium nitrate and humic acid applications on pepper seedling growth under saline condition. A mixture of soil:sand (1:1) was used as a plant growing media including 90 mg kg(-1) P2O5, 180 mg kg(-1) K2O and 250 mg kg(-1) N. Four different doses of humic acid (0, 1000, 2000 and 4000 mg kg(-1)) and calcium nitrate (0, 50, 100 and 150 mg kg(-1)) were applied into the growing media. Before sowing Demre variety pepper seeds, 60 m mol NaCl was added into 300 cm(3) soil:sand mixture in each pot. Applications of humic acid and calcium nitrate significantly affected pepper seedling growth. 1000 and 2000 mg kg(-1) humic acid and 50 mg kg(-1) calcium nitrate applications increased fresh and dry leaf weight, fresh and dry root weight, stem diameter, root length and shoot length. The highest rates of humic acid (4000 mg kg(-1)) and calcium nitrate (100 and 150 mg kg(-1)) decreased these criteria of pepper seedling under the saline soil condition.
The Effects of Gytita on Plant Growth of Lettuce (Lactuca Sativa) in Nickel Contaminated Soils
(Parlar Scientific Publications (p S P), 2017) Gulser, Fusun; Sonmez, Ferit; Karaca, Siyami; Gokkaya, T. Hasibe
In this study, the effects of Gytjja on some yield criteria of lettuce (Lactuca sativa) grown in Ni contaminated two different soils (Inceptisol and Entisol) were investigated. This study was conducted with the application of three levels of gytjja (0, 5 and 10%) in two different soils (Inceptisol and Entisol) contaminated with three levels of Ni (0, 40 and 80 mg kg(-1)) in a factorial experimental design with three replications. As a basic fertilization, 300 mg kg(-1) N and 90 mg kg(-1) P2O5 were applied into each pot. At the end of the study, the highest value for plant length (20.50 cm), leaf number (16.3) and plant fresh weight (10.67 g) were obtained in the 10% gytjja without Ni application in Inceptisol soil. The plant growth parameters were higher in the Inceptisol soil than in the Entisol soil. According to the results, gytjja doses had the positive effects on plant growth criteria of lettuce in Ni contaminated soils. Ni applications decreased the mean values of plant growth criteria.
Effects of Humic Acid and Ca(No3)2 on Nutrient Contents in Pepper (Capsicum Annuum) Seedling Under Salt Stress
(Taylor & Francis As, 2016) Sonmez, Ferit; Gulser, Fusun
This study was carried out in order to determine the effects of calcium nitrate (Ca(NO3)(2)) and humic acid (HA) applications on nutrient uptake of pepper seedling under salt stress in a plant growth room. Before sowing Demre variety of pepper seeds, 60 mM NaCl was added to each 300 cm(3) pot. The experiment was ended at eighth week after the sowing. Applications of HA significantly affected K, Ca, Fe, Mn, Zn (p < .01) and P (p < .05) contents. Also, Ca(NO3)(2) applications did not show a significant effect on Fe and Cu contents of pepper seedling. However, Ca(NO3)(2) applications significantly affected N and P contents (p < .05) and K, Ca, Mn, and Zn contents (p < .01) of pepper seedling under salt stress.
The Effects of Sewage Sludge Application on Grain Yield and Nutrient Status of Grain in Triticale Under Rainfed Conditions
(Parlar Scientific Publications (p S P), 2016) Arpali, Digdem; Gulser, Fusun; Yagmur, Mehmet
Eight treatments were used to evaluate the effects of sewage sludge and mineral fertilizer on grain yield and some grain yield componnets, plant nutrient contents and heavy metal concentrations in triticale grain (cv Mikham 2001). The study was conducted using a completely randomized design with 3 replicates in dry conditions in Van, in the East Anatolia region of Turkey in winter cereal cropping season of 2009-2010. Sewage sludge was added to the soil 6 different rates of 5, 10, 15, 20, 25, 30 T ha(-1) and a single dose of nitrogen and phosphorus fertilizers like as standard dose (80 kg N ha(-1)+69 kg P ha(-1)). Moreover, control plot was not added any mineral fertilizer or sewage sludge. According to study results, the highest sewage sludge rate resulted in 99 % higher grain yield compared to control. Moreover the highest sewage sludge rate were obtained 20 % more grain yield than mineral fertilizer. The obtained results show that the grain triticale took distinctly more macroelements under the influence of sewage sludge in comparison with the control. Additionally grain mineral concentrations such as N, P, Mg, Zn, Fe were significantly affected with increasing of sewage sludge rates. In contrast, other nutrients (K, Mn, Al, Ni, Cu, Cd, Pb, Cr) was not affected significantly the increasing of sewage sludge rates. It is concluded that, 30 T ha(-1) sewage sludge rate could be substitute for commercial fertilizer for having optimum plant growth of triticale in marginal lands.
Effects of Zinc and Urea as Foliar Application on Nutritional Properties and Grain Yield in Barley (Hordeum Vulgare L-Cony Under Semi Arid Condition
(Parlar Scientific Publications (p S P), 2017) Yagmur, Mehmet; Arpali, Digdem; Gulser, Fusun
This current study was conducted to evaluate the effects of different rates of urea and zinc on grain yield and some important grain mineral contents in barley (Hordeum vulgare L. cony. Distichon cv. Tokak 157/37). The experimental design was a randomized complete block (RCB), arranged as split-plot with two doses of urea (0, 20 kg ha(-1)) (main plots) and five zinc doses (0, 0.5, 1.0, 2.0 and 4.0 kg ha(-1)) (subplots) with 3 replicates. The recorded agronomic parameters were grain yield (kg ha(-1)), plant height (cm), spike length (cm), seeds spikes(-1), 1000 kernel weight (g), seeds weight spike(-1) and grain mineral contents (N, P, Zn and Fe). When used solely, either urea or zinc significantly increased grain yield and all measured parameters. Besides, the use of the combined higher zinc doses with the urea (20 kg urea ha(-1)+4 kg Zn ha(-1), 20 kg urea ha(-1)+2 kg Zn ha(-1)) increased grain yield (3.49 t ha(-1) and 3.64 t ha-(1)). These yields were not statistically different between each other, suggesting that 20 kg urea ha(-1) + 2 kg Zn ha(-1) application dose would be sufficient for higher grain yield. Moreover, the foliar application of urea and zinc affected the protein content and grain mineral contents (N, Zn and Fe) when sprayed at boot stage of barley. To conclude, zinc & urea treatment via foliar will maintain better quality and higher quantity barley grains under under semi arid conditions.
Industry Caused Heavy Metal Pollution in the Soils of North-Iraq
(Parlar Scientific Publications (p S P), 2019) Ahmed, Aram Najat; Gulser, Fusun
In this study, the heavy metal pollution in soils of Northern Iraq caused by industry was determined. A total numbers of 48 surface soil samples of near (0.2 km) and far away (2 and 10 km) from the pollution sources were taken from Dhok, Erbil, Koyia, and Sulemania cities and the concentrations of Fe, Ni, Zn, Cd, Cu, Co, Pb, As, Mo, Cr, Se, Sb, and Hg were determined. When comparing the 0.2 km soil sampling position, all of heavy metal contents generally decreased at 2 and 10 km sampling positions with increasing distance from the pollutant sources. The mean values of Ni, Cd, Hg were found in high level compared to limit values. The maximum values of Fe and Zn contents were also found higher than the limit values. The decreases in Cd, Mo and Cu contents due to increasing distance from the pollutant sources were found significant (P<0.05) statistically. The highest heavy metal content was obtained for Ni in the soil samples taken from Dhouk, Koyia, Erbil and for Zn in the soil sample of Sulemania. The soil samples of Dhok and Sulemania had higher Ni, Cr, Zn and Cu contents than the samples of Erbil and Koyia.
The Responses of Nutrient Uptakes in Different Organs of Narcissus Tazetta (L.) Grown Under Saline Conditions To Mycorrhizal Inoculation
(Hard, 2024) Cig, Arzu; Gulser, Fusun; Gulser, Efdal
In this study, the effect of mycorrhiza (Glomus intraradices N.C. Schenck & G.S. Sm.) inoculation on the micronutrient and macroelement uptakes in different organs of daffodil (Narcissus tazetta L.) grown under saline conditions is examined. For this purpose, Narcissus tazetta plant grown in the climate chamber was treated with sodium chloride (NaCl) at three different concentrations such as salt -free (S0), 34 mmol (S1) and 68 mmol (S2) in mediums with mycorrhiza (M+) and without mycorrhiza (M-). At the end of the experiment, the uptakes of sodium (Na), iron (Fe), manganese (Mn), zinc (Zn) and copper (Cu) uptakes in the bulb, root and leaves of the plant were analyzed. The effects of salt and mycorrhiza interactions on the N uptakes were statistically significant at the 5% level in bulbs. The effects of salt applications were found significant at 1% level for all nutrients uptakes of roots except Cu uptake (5%). The effects of interactions among salt and mycorrhiza were found significant at 5% level for P, Ca and Mn uptakes and at 1% level for Mg, Fe and Cu uptakes of leaves statistically. Increasing doses of sodium chloride had statistically negative effects on nutrient uptakes of different organs except Na and K uptakes of bulbs. Mycorrhiza applications generally increased nutrient uptakes of daffodil's roots and leaves under salinity conditions. The interactions between salt and mycorrhiza were significant for N in bulbs, for N, P and Fe in roots and for P, Ca, Mg, Fe, Mn and Cu in leaves. The decreases in these nutrients uptakes by 68 mmol NaCl applications were lower in mycorrhiza applications than those in non mycorrhiza applications.