Browsing by Author "Celebi, Rafet"

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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.
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.
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.