Browsing by Author "Tufenkci, Sefik"

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Development of Organic Phosphorus Vermicompost From Raw Phosphate Rock Using Microorganisms and Enzymes and Its Effect on Tomato Yield
(Elsevier, 2023) Turan, Metin; Kocaman, Ayhan; Tufenkci, Sefik; Katircioglu, Hikmet; Gunes, Adem; Kitir, Nurgul; Yildirim, Ertan
Chemical phosphorus and other chemical fertilizers undergo certain changes in the soil. These changes cause crop yield loss because of changes in soil pH and EC. In addition, other toxic compounds accumulate. They also lead to serious soil contamination and threaten the environment. In this study, vermicompost was developed from raw phosphate rock by using microorganisms and phosphorus solubilizing enzymes (protease, lipase, dehydroge & PRIME;nase, hydrolase, urea, nitrogenesis, cellulose) to eliminate phosphorus deficiency in soil. Two-year greenhouse trials were conducted to determine the effectiveness of the organic phosphorus humus produced after six months of mineralization, and tomato plants were grown. As a result of these experiments, the effects on yield and physicochemical properties of the tomato plant were studied. Earthworm fertilizer at a rate of 4500 kg ha-1 increased the tomato yield of 22.12% compared to the control application, in the two-years means. In addition, the effect on nutrient content of tomato plants resulted in statistically significant increases (p < 0.05). When the macronutrient concentrations in the leaves of the plant were examined, they were considered to have reached the level of sufficiency. It was also found that the content of amino acids, chlorophyll and antioxidants in the tomato plant reached the highest levels compared to the control application. Based on our results, it was concluded that this organic fertilizer will contribute to higher crop yields in plants of cultural and commercial importance and to other plant growth parameters.
Development of Plant-Friendly Vermicompost Using Novel Biotechnological Methods
(Springer, 2023) Kocaman, Ayhan; Turan, Metin; Tufenkci, Sefik; Katircioglu, Hikmet; Gunes, Adem; Kitir, Nurgul; Yildirim, Ertan
For the first time in the world, raw tea waste from tea plants was mineralized by rapid biotechnological methods using beneficial worms, enzymes (protease, lipase, dehydrogenase, hydrolase, urease, nitrogenase, cellulase) and microorganisms (Aspergillus flavus, Bifidobacterium spp. Bacillus subtilis, Rhodotorula spp., Lactobacillus, Rhodopseudomas spp.). Thus, biocompost technology was developed to create an exclusive organic tea fertilizer. The biocompost product was developed in a plant-friendly format for sustainable use of local resources. It was rich in organic material and free from diseases and pathogens, according to organic farming methods. It was also reliable in terms of heavy metal content. In the biocompost study, the application of five different compost mixtures and three different application methods were investigated. Worm + Plant Growth-Promoting Rhizobacteria + enzymes accelerated the mineralization of the compost among the studies, and the lowest C/N and OM % ratio was obtained. The other physical and chemical parameters were also in accordance with the ideal values determined in the literature. Also, the increase of nitrogen without nitrogen loss during the composting process shows that mineralization was successfully completed. In concluded, it can be suggested that the developed organic worm compost fertilizer can be used on agricultural land and in regenerative agriculture.
The Effects of Arbuscular Mycorrhizal Fungi on the Seedling Growth of Four Hybrid Cucumber (Cucumis Sativus L.) Cultivars
(Tubitak Scientific & Technological Research Council Turkey, 2012) Tufenkci, Sefik; Demir, Semra; Sensoy, Suat; Unsal, Husameddin; Demirer, Emre; Erdinc, Ceknas; Ekincialp, Aytekin
The effectiveness of different arbuscular mycorrhizal fungi (AMF) on different hybrid cucumber cultivars has not been well documented, even under normal seedling conditions. The present study therefore aimed to evaluate colonization, nutrient uptake, dependency, and other seedling traits of 4 cucumber hybrids (Ceren F-1, Beta F-1, Silyon F-1, and Maraton F-1) inoculated by 3 different AMF [Glomus intraradices (Gi), Glomus etunicatum (Ge) and Gigaspora margarita (Gm)]. Traits were evaluated in a growth chamber experiment consisting of a 4 x 4 factorial design (4 cucumber hybrids, 3 AMF plus 1 control) with 3 random replications. AMF-inoculated cucumber seedlings had shorter hypocotyledons and wider and longer cotyledons than non-inoculated seedlings. Gm-inoculated seedlings had the narrowest stem diameter and lowest leaf number. AMF-inoculated seedlings had shorter shoots and longer roots than noninoculated ones. There was significant mycorrhizal effect on the iron (Fe) content of shoots and the mycorrhizal colonization rate in roots. Relative mycorrhizal dependency (RMD) varied widely among the hybrid cucumber cultivars tested. It is thought that the determination of high-RMD cultivars could lead to improvements in cucumber seedling production in the future.
Effects of Arbuscular Mycorrhizal Fungus, Humic Acid, and Whey on Wilt Disease Caused by Verticillium Dahliae Kleb. in Three Solanaceous Crops
(Tubitak Scientific & Technological Research Council Turkey, 2015) Demir, Semra; Sensoy, Suat; Ocak, Elvan; Tufenkci, Sefik; Durak, Emre Demirer; Erdinc, Ceknas; Unsal, Husamettin
This study examined the effects of arbuscular mycorrhizal fungi (AMF), humic acid (HA), and whey (W) application on wilt disease caused by Verticillium dahliae Kleb. in tomato, pepper, and eggplant. Single, dual, and triple applications of AMF (2.5 g inocula of either Glomus mosseae or G. intraradices), HA (500 ppm), and W (50 mL kg(-1)) were found to improve the morphological growth and nutritional status of all three host species. Moreover, dual and triple applications reduced the severity of wilt disease caused by V. dahliae by between 40% and 70.5%. Triple application of AMF, HA, and W decreased the number of V. dahliae microsclerotia by 50%. Furthermore, W and HA application promoted AMF growth, with HA application resulting in significantly higher levels of AMF colonization and spore density when compared to untreated controls.
Effects of Rhizobium, Arbuscular Mycorrhiza and Whey Applications on Some Properties in Chickpea (Cicer Arietinum L.) Under Irrigated and Rainfed Conditions 1-Yield, Yield Components, Nodulation and Amf Colonization
(Elsevier Science Bv, 2011) Erman, Murat; Demir, Semra; Ocak, Elvan; Tufenkci, Sefik; Oguz, Faruk; Akkopru, Ahmet
The study aimed to determine the effect of whey application, the inoculation of Glomus intraradices Shench&Shimith and Mesorhizobium ciceri on root colonization, nodulation, yield and the components of yield in chickpea (Cicer arietinum L cv. Aziziye-94) under rain-fed and irrigation management. Experiments were carried out in a split plot design with four replications in 2003 and 2004. The above-mentioned factors were all applied to plants in single, double and triple combinations. The effect of irrigation was significant, with the heaviest yields being obtained under this treatment. Arbuscular mycorrhizal fungus (AMF) inoculation, alone or in combination with other treatments, was very effective under rain-fed conditions, resulting in large increases in yield, root colonization and phosphorus content of the seed and shoot. On the other hand, rhizobial inoculation increased significantly all traits examined, particularly root nodulation and the nitrogen content of seeds and shoots under irrigated conditions. Whey combined with AMF significantly increased root colonization while its combination with Rhizobium increased the number of nodules. Combinations of two or three treatments were more effective than individual applications. The greatest yield, root colonization and nodulation were obtained from the combination of all three treatments under irrigation. (C) 2011 Elsevier B.V. All rights reserved.