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    1103 Paulsen anacı üzerine aşılanan bazı sofralık üzüm çeşitlerinin açık köklü fidan randımanlarının belirlenmesi
    (Harran Tarım ve Gıda Bilimleri Dergisi, 2019-09) Uzun, Tuba
    Bu çalışma, Tokat Merkez ilçede bulunan “Kazova Vasfi Diren Tarım İşletmesi”nin bağ fidanı üretim tesisinde yürütülmüştür. Denemede, 1103 Paulsen Amerikan asma anacı üzerine aşılanan sekiz sofralık üzüm çeşidi (Cardinal, Ata Sarısı, Uslu, Trakya İlkeren, Alphonse Lavallèe, Hamburg Misketi, Çavuş, Yalova İncisi)’nin fidan randımanı belirlenmiştir. En yüksek fidan randımanı, Trakya İlkeren çeşidinde (% 98.53) belirlenirken; en düşük fidan randımanı, Hamburg Misketi çeşidinde (% 67.53) tespit edilmiştir.
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    Antepfıstığı (Pistacia vera L.) Bahçelerinde Kök Çürüklüğü ve Solgunluğa Neden Olan Fungal Etmenlerin Araştırılması: Siirt İli Lokasyonu, Türkiye
    (2023) Aydın, Mehmet Hadi; İnal, Behcet; Uzun, Tuba; Aydın, Yusuf; Kayalar, Berrin
    Antepfıstığı (Pistacia vera L.) bahçelerinde son yıllarda kök çürüklüğü ve solgunluk gibi belirtiler gözlemlenmiş ve ağaçlarda kurumalar tespit edilmiştir. Bu çalışmada kurumalara neden olan toprak kökenli fungal patojenler araştırılmıştır. Çalışma; Siirt ili Merkez, Eruh, Şirvan, Kurtalan ilçeleri ve köylerinde 2021-2022 yıllarında güdümlü örnekleme sörvey metoduna göre yürütülmüştür. Elde edilen fungus türleri, renk, gelişim durumları, spor yapıları gibi morfolojik karakterlerine ve ITS (Internal Transcribed Spacer) gen dizilerinin NCBI (The National Center for Biotechnology Information) gen bankasındaki diğer genlerle eşleştirme analizleri ile belirlenmiştir. Patojenisite çalışması, bir yaşındaki Siirt çeşidi üzerinde yapılmış ve patojen izolatlar belirlenmiştir. Çalışma sonucunda ağırlıklı olarak Fusarium türleri (F. solani, F. oxysporum, F. verticillioides, F. equseti, F. acuminatum, F. avenaceaum, F. proliferatum, F. brchygibbosum, Fusarium spp.) ile Diaporthe hongkongensis, Scydalidium sp., Rosellinia sp., Nectria diminuta, Neoscytalidium dimitatum, Rhizoctonia solani, Macrophomina phaseolina, Phoma spp. ve Cylindrocarpon spp., izole edilmiş ve bunların farklı oranlarda patojen oldukları tespit edilmiştir.
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    EFFECTS OF CLUSTER THINNING TREATMENTS ON CHEMICAL COMPOSITION AND PHENOLIC COMPOUNDS OF GRAPE JUICE AND WINES OF NARINCE (VITIS VINIFERA) GRAPE CULTIVAR
    (Parlar Scientific Publications (P S P), 2019) Uzun, Tuba; Cangi, Rustem; Bayram, Mustafa
    The present study was conducted to determine the effects of 4 different cluster thinning treatments (CTT) [control (C), 15% (12000 kg/ha), 30% (9000 kg/ha), 60% (6000 kg/ha)] on grape juice and wine quality of Narince grape cultivar grown in Tokat province (Turkey) in 2014-2015 growing seasons. The grapes harvested at technological maturity stage were processed into wines. The pH, total soluble solid contents, titratable acidity, specific gravity, ethyl alcohol, volatile acid, reducing sugar, total sulphur dioxide, total phenolics, total flavonoids and some phenolic compounds of the grape juice and wines were determined. Sensory evaluations revealed that cluster thinning applications increased wine quality. The greatest sensory evaluation score was obtained from 30% cluster thinning treatment and these wines were classified as excellent quality wines. As a result, according to analyzes performed in grape juice and wines, 30% (9000 kg/ha) cluster thinning treatment was found to be the most suitable thinning practice in Narince.
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    Energy Input-Output Analysis of Grape (Vitis vinifera L.) Production in Turkey A Case Study from Siirt Province
    (Springer, 2022) Uzun, Tuba; Baran, Mehmet Firat
    In this study, in which good agricultural practices were applied, energy-use efficiency in grape production was determined. The study was conducted in the Siirt province of Turkey. Experiments and research data values are based on the 2020 growing season. The main data used in this research, including economic life, labor success, fuel oil consumption, machine weights of the tools and machines used in grape production, and fertilizer and seedling amounts were obtained from existing calculations, other studies, and various sources. Energy use efficiency, energy productivity, specific energy, and net energy in grapes were computed as 10.94, 0.92 kg MJ(-1), 1.08 MJ kg(-1), and 191,597.23 MJ ha(-1), respectively. Fertilizer energy had the highest share among all energy inputs by 49.66%. It was followed by 17.15% for machinery energy, 14.70% for diesel fuel energy, 7.57% for spraying energy, 7.10% for irrigation water energy, and 3.83% for human labor energy.
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    Physicochemical Characteristic of The Organic Raisins Served to Markets in Midyat Town of Mardin Province and Besiri Town of Batman Province in Turkey
    (Springer, 2021) Uzun, Tuba; Hallac, Bulent
    This study was conducted to determine quality criteria of raisins served to taste of consumers in local bazaars and identify their compliance with the standards. Raisin samples randomly taken from local bazaars in Midyat town of Mardin province and Besiri town of Batman province were used as the material of the study. A total of 30 samples (15 from each town) were subjected to physicochemical analyses (100-raisin weight, number of raisins per 100 g, average raisin width, average raisin length, average number of seeds, average seed weight, raisin skin color parameters, chroma and hue angle, pH, TSSC (total soluble solid contents), maturity index, water content, ash content, specific gravity and total acidity). According to size characteristics specified in Turkish Food Codex, in terms of number of raisins per 100 g, all samples, except for M-2 (large), were classified in jumbo (very large) class. In terms of chroma values, M-13 (15.97) and B-3 (6.51) samples had the greatest color saturation and M-11 (3.64) and B-13 (0.22) samples had the opaquest colors. In terms of hue angle values, M-3 (312.59) and B-13 (112.28) samples had the darkest blue color and M-10 (54.09) and B-1 (85.92) samples had the darkest red-purple color. In terms of pH values, M-6 (4.68) samples were classified as moderately acidic foods and all the others were classified as acidic foods. Despite the lack of vertical food codex for raisins in Turkish Food Codex, compliance is required with the horizontal regulation provisions (labeling, contaminants, pesticide, additives, microbiological criteria and etc. applied to all foodstuffs). Present findings revealed that there were no standard productions in raisins sold in public bazaars. Thus, it was concluded that improper storage and marketing conditions could pose serious risks on public health. Therefore, raisin topic should urgently be issues and relevant controls should be made accordingly. A similar study was not conducted in Midyat and Besiri towns of Southeastern Anatolia region. Thus, present findings may guide further researchers.
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    Some soilborne pathogens causing root rot and wilting of pistachio trees in southeastern Turkey
    (Taylor & Francis Inc, 2024) Aydin, Mehmet Hadi; Canpolat, Sirel; Uzun, Tuba
    Soilborne fungal pathogens that cause root rot, wilting and dying are the most important problems in pistachio production. The purpose of this study was to examine, isolate, and diagnose the pathogens from diseased pistachio trees in orchards and nurseries located in southeastern Turkey. Fungi isolated from the pistachio trees were identified by morphology and the sequences of the internal transcribed spacer (ITS) region and translation elongation factor-1 alpha (TEF-1 alpha). Fusarium solani, Fusarium oxysporum, Fusarium brachygibbosum, Fusarium chlamydosporum and Macrophomina phaseolina were the most important fungi causing root rot, wilting and decline of pistachio trees. Pathogenicity studies showed that all of the fungi identified can colonize and damage the vascular tissues of a sapling and cause substantial lesions and vascular discolourations. This study provides the first evidence of wilting due to the root and crown rot in pistachio trees in Siirt province of Turkey caused by some Fusarium species, especially F. solani, F. oxysporum, F. chlamydosporum, F. brachygibbosum and M. phaseolina. Finally, the research enabled the identification of some fungal pathogens that are seriously harming pistachio trees in southeastern Turkey.