Browsing by Author "Celebi, Seyda Zorer"

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Accumulation and Tolerance of Pb in Some Bioenergy Crops
(Hard, 2018) Celebi, Seyda Zorer; Ekin, Zehra; Zorer, Ozlem Selcuk
Contamination of agricultural soil is a worldwide problem, with heavy metals being a major part of the concern. Bioenergy crop production is also a profitable phytoremediation strategy using biofuel crops for both utilization and remediation of contaminated soil. To investigate lead (Pb) accumulation and tolerance of three different energy crop cultivars, three-week-old healthy seedlings were grown in Hoagland solution supplemented with five different concentrations of Pb 0, 25, 50, 100, and 150 mg/kg. At the end of 30 days, Pb content and translocation, tolerance index, bioconcentration factor, and growth parameters of the plants were evaluated in the study. Results showed that increasing Pb concentrations did not affected the growth and development of Sunburst (Panicum virgatum L.) and Dincer (Carthamus tinctorius L.) cultivars. The highest Pb contents were also found in roots and shoots of Sunburst and Tarsan-1018 (Helianthus annuus L.) cultivars. Dincer cultivar has a high ability to transfer Pb from root to shoot when compared to others. These results suggest that these cultivars may be good candidates for remediation of Pb-contaminated areas for use in biofuel production.
The Applications of Arbuscular Mycorrhizal Fungus (Amf) and Atrazine on Silage Maize (Zea Mays L.) at Different Irrigation Regimes
(Wfl Publ, 2011) Demir, Semra; Celebi, Seyda Zorer; Kaya, Ilhan; Sahar, A. Korhan
In this study we tried to determine the effects of applications of arbuscular mycorrhizal fungus (AMF) and atrazine against weed and irrigation problems in silage maize cultivated at different irrigation regimes. It is already established that the application of AMF with atrazine influences some yield parameters (plant height, green herbage and thy matter yields, leaf, stem and ear percentages) in silage maize at all irrigation regimes positively. In the study it was quite striking that AM F-atrazine was much more effective compared with other levels of irrigation regimes and that there was reduction in weed density in these plots at irrigation regimes where water was not a limited factor. Besides, the effect of atrazine on AMF was analysed and it was established that AM F colonisation in atrazine applied plots decreased compared with non-applied ones.
Assessment as Establishing Fertilizer of Biosolid in a Sod Establishment With Creeping Red Fescue (Festuca Rubra Var. Rubra)
(Foundation Environmental Protection & Research-fepr, 2011) Celebi, Seyda Zorer; Arvas, Osmetullah; Celebi, Rafet; Yilmaz, Ibrahim Hakki
This study was carried out to determine the assessment as establishing fertilizer of biosolid in a sod establishment with creeping red fescue (Festuca rubra var. rubra) in Van in 2007-2008 years. In this study carried out using randomized complete-block design with three replications, it was evaluated the doses of 3, 6, 9 and 12 t/da biosolid (sewage sludge) and application as establishing fertilizer of farmyard manure that was used as a control. In the study, criteria such as plant height, green grass yield, plant covered area, weed rate, color and turfgrass quality of creeping red fescue were evaluated. In the result of study, in observations at the first period of primary year, plant height, green grass yield and plant-covered area values were found to be a low in applications where high doses of biosolid were used and at the further periods, these values were found to be a high. Color and turfgrass quality criteria in fields used as establishing fertilizer of biosolid give generally the best results according to fields used the farmyard manure in each observation period. In the result of this study, it has been considered that biosolid was increased the turfgrass performance of creeping red fescue and was an important alternative to a farmyard manure in establishing stage.
Collection, Conservation and Evaluation for Forage Yield of Alfalfa Landraces Grown in East Anatolia
(Soc Field Crop Sci, 2013) Sabanci, Cafer Olcayto; Ertus, M. Macit; Celebi, Seyda Zorer
This study was conducted to collect, evaluate and conserve alfalfa landraces grown in Van province, East Anatolia in 2009-2011. Ten counties were visited and 66 alfalfa landraces were collected. The seed samples were sent to Aegean Agricultural Research Institute for long term conservation. With other 4 populations collected from university campus, a total of 70 alfalfa accessions with seven standards (controls) were grown in an augmented trial design with 5 replicates. Cultivar Elci had the highest green and dry matter yields. There was a great variability between landraces in terms of the characters recorded. Green, dry matter and crude protein yields of land races were in the range of 24.67-103.21 t ha(-1), 6.04-24.26 t ha(-1), and 1.07-4.96 t ha(-1), respectively. Landraces collected from Ercis and Gevas appeared to have high green and dry matter yields.
Combined Applications and Multi-Faceted Evaluations of Humic Acid, Seaweed, and Vermicompost With Chemical and Organo-Mineral Fertilizers on Corn, Part I: Chlorophyll Concentration
(Taylor & Francis inc, 2025) Agiragac, Zubeyir; Celebi, Seyda Zorer
This study investigated the effects of various fertilizers on the leaf chlorophyll content of the Simpatico (FAO300) silage corn variety under field conditions. Different application combinations were tested, including treatments with and without foliar fertilizers. The foliar fertilizers used were seaweed (SW), humic acid (HA), and vermicompost (VC), combined with granular fertilizers DAP, UREA, OMB, and OMT. Granular fertilizers were applied to the soil, while foliar fertilizers were applied at four different stages: the 4-6 leaf period, 11-13 leaf period, 14-16 leaf period, and at corn tassel. Chlorophyll content in plant leaves was measured using a SPAD-502 device during these periods. The highest SPAD chlorophyll ratios were recorded with OMB-OMT (42.583) and DAP-OMT (42.150) treatments, which did not include foliar fertilizers. Conversely, the lowest SPAD chlorophyll ratio, 28.983, was observed in the DAP-UREA treatment. Treatments with foliar fertilizers resulted in an increase in SPAD chlorophyll by 11.3% to 15.7%, with the greatest improvements observed with vermicompost and humic acid, compared to treatments without foliar fertilizers. Additionally, analysis of periodic effects showed that the highest SPAD chlorophyll ratios were found during the third and second measurement periods, while the lowest ratios were observed in the first measurement period. The use of organo-mineral fertilizers and foliar applications of vermicompost and humic acid were found to enhance the leaf chlorophyll content of corn.
Control of Smoothseed Alfalfa Dodder (Cuscuta Approximata) in Alfalfa (Medicago Sativa)
(Friends Science Publ, 2017) Tepe, Isik; Celebi, Seyda Zorer; Kaya, Ilhan; Ozkan, Reyyan Yergin
This study aimed to determine the most appropriate control methods for smoothseed alfalfa dodder (Cuscuta approximata Bab.), infesting alfalfa (Medicago sativa L.) in Van, Turkey. The effects of imazethaphyr and imazamox herbicides and their application times, including three cutting heights of alfalfa, on controlling dodder were investigated. The study had a split-plot design with four replications, and the trial was conducted under field conditions from 2010 to 2013. The results indicated that pre-emergence applications of imazethaphyr, pre- and post-emergence applications of imazamox, suppressed dodder during the first year after application; however, the effect decreased in the following years. In 2013, a substantial decrease in the hay yield and raw protein ratio of alfalfa was found. In addition, the control of dodder was not significantly affected by different cutting heights. (C) 2017 Friends Science Publishers
The Effect of Arbuscular Mycorrhizal Fungi (Amf) Applications on the Silage Maize (Zea Mays L.) Yield in Different Irrigation Regimes
(Elsevier France-editions Scientifiques Medicales Elsevier, 2010) Celebi, Seyda Zorer; Demir, Semra; Celebi, Rafet; Durak, Emre Demirer; Yilmaz, Ibrahim Hakki
In this study the effect of AMF (Arbuscular Mycorrhizal Fungi) Glomus intraradices on the silage yield of maize (Zea mays L) under five different irrigation regimes was studied. Plant height, green herbage yield, dry matter yield, leaf, stem and ear ratios were evaluated as yield criteria in the study. It was found that AMF inoculation increased the silage yield in the whole irrigation when compared to those which were not applied with AMF. In addition, it was particularly established that AMF application brought about significant increase even in restricted irrigation conditions in green and dry matter yield. It was also realised that, with AMF application, there was an increase in leaf and stem ratios but a decrease in ear ratios. (C) 2010 Elsevier Masson SAS. All rights reserved.
Effect of Atrazine Applications on Weed Growth and Yield at Different Irrigation Levels in Corn (Zea Mays L.) Growth
(Academic Journals, 2010) Kaya, Ilhan; Celebi, Seyda Zorer; Yergin, Reyyan; Yilmaz, Ibrahim Hakki
Corn (Zea mays L.), for silage, is very important in animal feeding because winter seasonal conditions last longer in Eastern Turkey. Corn yield components were investigated in plots, in which herbicide had been applied and also not applied at different irrigation levels in this study. The study lasted for two years and soil-water content was kept at five different levels [96% (I-1), 63% (I-2), 32% (I-3), 15% (I-4) and 4% (I-5)]. The species and intensities of the weeds at the irrigation levels were determined in the study. Plant length, green and dry herbage yields, leaf, stem and ear ratios were studied as criteria for corn yield. At the same irrigation levels, higher efficiency values were determined according to non applied plots in the atrazine applied plots. In both years, the lowest green herbage and dry herbage yields were determined at I-4 and I-5 irrigation levels. The weeds that are mostly seen on the plots, in which atrazine had not been applied are Alopecurus myosuroides Huds. and Sinapis arvensis L, respectively. Similarly, for both years, high densities of weeds were observed in the highly moisturized lands. The atrazine activities increased at the I-1 and I-2 irrigation levels in which water content of the soil is high.
The Effect of Sewage Sludge and Chemical Fertilizer on Natural Pasture's Yield and Botanical Composition
(Wfl Publ, 2011) Arvas, Osmetullah; Celebi, Seyda Zorer; Yilmaz, Ibrahim Hakki
Meadows converted into poor quality pastureland, as a result of early and over grazing, must regained their productive capacity. Since sewage biosolid (sewage sludge) contains high ratio of organic matter and nutrients, its use as fertilizer has become widespread. The aim of this research is to investigate the usability of waste of sewage biosolid (SB) as fertilizer as an alternative to chemical fertilizers in amending the poor quality pastureland. In this study, in the first experiment 25, 50, 75 and 100 ton ha(-1) year closes of sewage biosolid (SB) and in the other one 50(N-1) +25(P-1), 100(N-2) +50(P-2), 150(N-3) +75(P-3), 200(N-4) +100(P-4) kg ha(-1) year doses of chemical fertilizers (CF) were applied to investigate their effects on yield and botanical composition. The experiment was conducted in complete block design with three replications in the same plots during two years. While the rate of contribution of grasses to the hay was increasing, rate of legumes was decreased by biosolid applications. In terms of biological diversity, the most stable botanical composition was reached by application of 25 ton ha(-1) year doses of biosolid and 50 kg N ha(-1)+25 kg P2O5 ha(-1) doses of chemical fertilizer. Green herbage, hay and crude protein yield and crude protein ratio were more increased by biosolid application. The highest yield was obtained from 75 ton ha(-1) year doses of biosolid and 150 kg N ha(-1) +75 kg P2O5 ha(-1) doses of chemical fertilizer. It was concluded that in similar ecological conditions, lowest doses of sewage sludge provided herbage with equal yield and high quality as the highest doses of chemical fertilizers.
Effect of Sewage Sludge and Synthetic Fertilizer on Ph, Available N and P in Pasture Soils in Semi-Arid Area, Turkey
(Academic Journals, 2011) Arvas, Osmetullah; Celebi, Seyda Zorer; Yilmaz, Ibrahim Hakki
Activated sewage sludge from the aerobically-digested treatment and synthetic fertilizer were used to determine total N, available P and pH in different soil depth of pasture in semi arid ecological condition, in Van, Turkey. The study was carried out in a completely randomized block. Four treatment of sewage sludge, one treatment of synthetic fertilizer and no treatment as a control were used in two consecutive years. Soil samples were collected from surface soil (0 to 20 cm) and subsoil (20 to 40 cm) 11 months after SS (sewage sludge) and TSP (triple super phosphate) application and 7 months after AN application for both years. By using sewage sludge and synthetic fertilizers treatments, surface and subsoil pH decreased. The decreases of pH in SF and control plots in both soil depths in 2008 were attributed to root biomass. Although, sewage sludge contains less amount of nitrogen than synthetic fertilizer does, it enabled nitrogen detection in both soil depths for a longer time and in a higher amount. While an increase in the amount of nitrogen in surface soil and subsoil was determined in 2007, a decrease in these was determined in 2008 in both depths. Amount of subsoil available phosphorus increased more by sewage sludge applications. However, amount of surface soil available phosphorus increased more by sewage sludge applications in 2007, while it increased more by synthetic fertilizer application in 2008. The lowest pH value, highest amounts of total N and available P was obtained by higher doses of sewage sludge. However, when long time applications and mineralization process were considered, sewage sludge's dose of 2.5 ton/ha(-1) ya(-1) can be said to provide more beneficial results than the synthetic fertilization's highest dose which is suggested for pastures and meadows.
The Effects of Azote and Phosphor Fertilizer Applications in Natural Meadows on Botanic Composition and Quality
(Medwell online, 2009) Terzioglu, Omer; Arvasseyda, Osmetullah; Celebi, Seyda Zorer
This study was carried out between 2004-2005 in a natural meadow at Arusu village within the boundaries of Van province to investigate the effects of different doses of azote and phosphate on botanic quality of the meadow and quality of the grass. In this study, which was conducted as three repeating according to factorial trial design in random blocks, azote is applied in 0, 4, 8 and 16 kg day(-1) doses while, phosphor is in 0, 6 and 12 kg day(-1) doses. In the 1st year of trial, the effects of azote fertilizer on legume plants are found insignificant while, it was found to be significant on other criterions. In the 2nd year, its effect on all criterions studied was found to be significant. In the 1st year, the highest grain amount was found 4 kg day(-1) (88.3%); plant amounts belong to other families to be 16 kg day(-1) (17.3%) and raw protein amount to be 16 kg day(-1) (11.7%), which was obtained by azote applications. In the 2nd year, the highest legume amount was found to be 27.6%, plant amounts belong to other families to be 16.5% and raw protein amount to be 12.0% in parcels without azote application and in the places with azote application, grain amounts are determined from 16 kg day(-1) azote application (88.6%). In the 1st year of phosphor fertilizer trial, significant effects are found on plants belong to other families and insignificant effect found on other criterions studied. In the 2nd year of trial, insignificant effects are found on plants belong to other families and significant effects found on other criterions studied. In the year 2004, the highest plant ratio (15.9%) belongs to other families was obtained from parcels without phosphor application. In the 2nd year, the highest legume ratio (24.3%) was get from parcels with 6 kg day(-1) phosphor application, grain ratio (84.3%) in parcels without phosphor application and raw protein ratio (12.1%) was obtained from parcels with 12 kg day(-1) phosphor application.
Effects of the Weed Density on Grass Yield of Alfalfa (Medicago Sativa L.) in Different Row Spacing Applications
(Academic Journals, 2010) Celebi, Seyda Zorer; Kaya, Llhan; Sahar, A. Korhan; Yergin, Reyyan
This study, in which the effects of different row spacing applications on weed density and on grass yield of Medicago sativa L. were investigated, was carried out in Van-Turkey from 2006 - 2008. Randomized blocks design was adopted with three replications. Row spacing applications of 20, 30, 40, 50, 60 and 70 cm were tested. The alfalfa plant height, yield of green herbage yield, dry matter yield, crude protein rate and crude protein yield were investigated. In addition, the weed densities at different row spacing distances were determined. The highest plant heights were obtained in 40 cm row spacing application in the first year and in 20 cm row spacing application in the second year. The highest dry matter and crude protein yields were obtained in 20, 30 and 40 cm row spacings in the first year and in 20 cm row spacing applications in the second year. The most intense weed was Alopecurus myosuroides Huds in 2007 and Amaranthus retroflexus L. in 2008. The least weed density was found in 20 cm row spacing during all three before cutting periods in the first year of study and this was found in 30 cm row spacing application in first before cutting period and in 20 cm row spacing application in the second and third before cutting periods in the second year.
Evaluation of Plant Metal Content and Biomass Yield for the Phytoextraction of Pb and Cd by Hydroponically Cultivated Crop
(Parlar Scientific Publications (p S P), 2017) Celebi, Seyda Zorer; Ekin, Zehra
The aim of this study is to determine the hyperaccumulation and phytoextraction capacities of TR3080 (sunflower), Blackwell (swtichgrass) and Linas (safflower) varieties toward lead and cadmium heavy metals. Plants are grown in 5 Pb (0, 25, 50, 100, 150 mg kg(-1)) and 5 Cd (0, 1, 5, 10, 20 mg kg(-1)) concentrations of Hoagland solution. In Pb concentrations of TR3080, root and shoot growth did not decrease. Blackwell was the variety that could absorb the highest amount of Pb in its root and shoot. Both of the variety continued their growth under Pb and showed property of accumulating high amounts of Pb; these facts indicate that they have hyperaccumulation capacity. High BCF and TF values in Pb concentrations of TR3080, Blackwell, and Linas yielded that these varieties could be used for phytoextraction in Pb contaminated soils. In all varieties, although a decrease in growth as a result of high Cd concentrations was observed, they could store high amounts of Cd and high BCF values were recorded. Nevertheless, TF values of all varieties were low. Therefore, usability of TR3080, Blackwell, and Linas varieties for remediation of Cd contaminated areas by phytostabilization should be considered.
Lead Phytoremediation Potential of Hydroponically Cultivated Crop Plants
(Friends Science Publ, 2017) Celebi, Seyda Zorer; Ekin, Zehra; Eryigit, Tamer
Some plants can be used for phytoextraction in order to remediate lead (Pb) heavy metal-contaminated soils. This study was conducted to investigate the Pb phytoextraction and biomass production potentials of Meric (sunflower), Trailblazer (switchgrass) and Remzibey-05 (safflower) varieties in hydroponic cultures. Three different plant varieties were tested in Hoagland solution supplemented by 0, 25, 50, 100, 150 mg/kg Pb concentrations. The obtained results showed that these plants could phytoextract Pb heavy metal, the ability of accumulation differed with varieties and concentrations of heavy metal. Meric's and Remzibey-05's root and shoot biomass were less affected from increasing Pb concentrations than those of Trailblazer's were. When compared to other varieties however, Trailblazer absorbed Pb through its roots more effectively. BCF (bioconcentration factor) and TF (translocation factor) values that were important in accumulation and translocation of heavy metals showed differences among varieties. While high BCF values were recorded for Trailblazer, higher TF values were recorded for Meric and Remzibey-05 than they were for Trailblazer. These results led that Meric and Remzibey-05 varieties are good candidates for phytoextraction, because of their high biomass and TF values. Trailblazer might be also utilized for the purpose of phytostabilization because it has both high root Pb content and low TF value. (C) 2017 Friends Science Publishers
Possibilities of Reducing the Use of Chemical Nitrogen in Vetch Plus Corn Production System
(Medwell online, 2009) Celebi, Seyda Zorer; Sahar, Korhan; Celebi, Rafet; Terzioglu, Omer
The study is carried out in Otluca Village bounding to city of Van in 2004-2005 years. In this study, it is aimed at investigating the possibilities of reducing amount of chemical nitrogen used in corn production which is planted before the vetch plant. In the 1st year of trial, in some part of the field, vetch is planted and its green herbage yield rates are determined. In the 2nd year of trial, planting activity is carried out in 2 trials as planting vetch both to the place it was previously planted and to where, it was not planted. In the trial, corn is applied chemical nitrogen in 5 different doses (0, 5, 10, 15 and 20 kg days(-1)). According to the results of the investigation, it is assigned that the corn, which is planted on the vetch, can be cultivated by using fertilizers with lower nitrogen. By the reduction in the amount of chemical nitrogen used, both the expenses will get lower and environmental pollution based on washing of fertiliser will be prevented. While, no difference is found on the corn planted after vetch that is applied 15 and 20 kg day(-1) nitrogen doses, in the corn, which is planted on the previously empty area, considerable difference is found between the doses. No considerable difference is found between 2 applications in terms of leaf, stem and ear ratios. The green and dry herbage yields at the corn, planted after vetch, vary between 5068.1 and 3033.3 and 1057.0 and 783.2 kg days(-1) respectively. However, these values at the corn, planted at the empty area in the preceding year, vary between 5134.4 and 2600.0 kg day(-1) and 1003.6 and 481.5 kg day(-1), respectively.