Browsing by Author "Turhan, Ahmet"
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Item Alleviation of deleterious effects of salt stress by applications of supplementary potassium-calcium on spinach(Taylor & Francis, 2013-03-01) Turhan, Ahmet; Kuşçu, Hayrettin; Özmen, Neşe; Aşık, Barış Bülent; Şerbeci, Mehmet Sıtkı; Şeniz, Vedat; Uludağ Üniversitesi/Mustafakemalpaşa Meslek Yüksekokulu/Bitkisel Üretim Bölümü.; Uludağ Üniversitesi/Mustafakemalpaşa Meslek Yüksek Okulu/Gıda Bilimi ve Teknolojisi Bölümü.; Uludağ Üniversitesi/Ziraat Fakültesi/Toprak Bilimi ve Bitki Besleme Bölümü.; Uludağ Üniversitesi/Ziraat Fakültesi/Bahçe Bitkileri Bölümü.; 0000-0002-1976-8082; AAG-5956-2021; AAH-4682-2021; AAG-5835-2021; AAG-5889-2021; 57196504252; 23667971600; 25623754300; 35217629600; 54788302500; 13604787100The aim of the present study is to investigate the effects of salinity and the influence of supplemental K+ and Ca2+ on the alleviation of the deleterious effects of salinity stress in spinach plants. Spinach cultivars used were Green Gold, Larissa, Mikado, Ohio and Matador. In addition to four NaCl levels of 50, 100, 150 and 200 mM, the treatments were repeated with 10 mM K and 10 mM Ca at each NaCl level. The results revealed that Na+ and Cl concentrations were significantly increased and the K+, Ca2+ and NO3 concentrations were decreased with increasing NaCl concentrations in the growth medium. Being very important to the physiology and biochemistry of plants decreases in K+, Ca2+ and NO3 reduced both growth and the yield. The additions of K+ and Ca2+ reduced the Na+ and Cl concentrations in the plant tissues, increased the K+, Ca2+ and NO3 concentrations, resulting in an improvement in the marketable yield of the spinach plants. Even though the effects of supplemental K+ and Ca2+ were similar in some plants at different salt concentrations, the effect of additional Ca2+ alone was higher overall. Thus, the results of this study confirmed the principal effects of K+ and Ca2+ supplies in reducing the detrimental effects of salinity.Item Azot ve potasyumlu gübrelemenin şeker pancarının verim ve bazı kalite özellikleri üzerine etkileri(Uludağ Üniversitesi, 1992) Turhan, Ahmet; Özgümüş, Ahmet; Uludağ Üniversitesi/Fen Bilimleri Enstitüsü.; Uludağ Üniversitesi/Ziraat Fakültesi/Toprak Bölümü.Bu araştırma azot ve potasyumlu gübrelemenin şeker pancarında verim ve kalite üzerine etkilerini araştırmak amacıyla yürütülmüştür. U.Ü. Ziraat Fakültesi'nin Görükle'deki Uygulama ve Araştırma Çiftliği'nde yürütülen tarla denemesinde parsellere azot 0, 100, 150 ve 200 kg N/ha düzeylerinde süre halinde); potasyum ise 0, 100, 150 ve 200 kg K 0/ha düzeylerinde (potasyum sülfat halinde) uygulanmıştır. Değişik azot ve potasyum düzeylerinin şeker pancarında kök verimi, şeker verimi, yüzde kuru madde ve zararlı azot miktarı üzerine etkileri araştırılmıştır. Azotlu gübrelemenin şeker pancarının kök ve şeker verimi üzerine etkileri istatistiksel olarak % 1 düzeyinde önemli bulunmuştur. Azot miktarı arttıkça şeker varlığı azalmış ancak kök verimindeki arışa bağı olarak toplam şeker veriminde de artış görülmüştür. En yüksek şeker verimi (ortalama 7.79 ton/ha), hektara 200 kg N ve 150 kg K20 verilen parsellerde elde edilmiştir. Artan azot miktarları ile ilişkili olarak şeker pancarındaki zararlı azot miktarı da önemli düzeyde artmıştır. Potasyumlu gübrelemenin ise, şeker pancarında kök ve şeker verimi ile zararlı azot miktarı üzerine istatistiksel olarak önemli düzeyde herhangi bir etkisi saptanmamıştır.Item Azot ve potasyumlu gübrelemenin şeker pancarının verim ve bazı kalite özellikleri üzerine etkileri(Uludağ Üniversitesi, 1992) Turhan, Ahmet; Özgümüş, Ahmet; Uludağ Üniversitesi/Fen Bilimleri Enstitüsü/Toprak Anabilim Dalı.Azot ve Potasyumlu Gübrelemenin Şeker Pancarının Verim ve Bazı Kalite özellikleri üzerine Etkileri Bu araştırma azot ve potasyumlu gübrelemenin şeker pancarında verim ve kalite üzerine etkilerini araştırmak amacıyla yürütülmüştür. U.ü. Ziraat Faküİtesi 1nin Görükle'deki Uygulama ve Araştırma Çiftlitti'nde 1991 yılında bir tarla denemesi kurulmuştur. Parsellere azot 0, 100, 150 ve 200 kg N/ha düzeylerinde (üre halinde); potasyum ise 0, 100, 150 ve 200 kg KaO/ha düzeylerinde (potasyum sülfat halinde) uygulanmıştır. Değişik azot ve potasyum düzeylerinin şeker pancarında kök verimi, şeker verimi, yüzde kuru madde ve zararlı azot (amino-N) miktara üzerine etkileri araştırılmıştır. Azotlu gübrelemenin şeker pancarının kök ve şeker verimi üzerine etkileri istatistiksel olarak % 1 düzeyinde önemli bulunmuştur. Azot miktarı arttıkça şeker varlığı asalmış, ancak kok verimindeki artışa bağlı olarak toplam şeker veriminde de artış görülmüştür. En yüksek şeker verimi (ortalama 7.79 ton/ha) hektara 200 kg N ve 150 kg Ka0 verilen parsellerde elde edilmiştir. Artan azot miktarları ile ilişkili olarak şeker pancarındaki zararlı azot miktarı da önemli düzeyde artmıştır. Potasyumlu gübrelemenin ise, şeker pancarında kök ve şeker verimi ile azot, miktarı üzerine istatistiksel olarak önemli düzeyde herhangi bir etkisi saptanamamıştırItem Deficit irrigation effects on watermelon (citrullus vulgaris) in a sub humid environment(Pakistan Agricultural Scientists, 2015-12) Kuşçu, Hayrettin; Turhan, Ahmet; Ozmen, Neşe; Aydınol, Pınar; Büyükcangaz, Hakan; Demir, Ali Osman; Uludağ Üniversitesi/Ziraat Fakültesi/Biyosistem Mühendisliği Bölümü.; 0000-0002-1976-8082; 0000-0001-9600-7685; AAG-5889-2021; AAG-5956-2021; AAH-2934-2021; AAH-4682-2021In sub-humid environments where summer drought is intense, the efficient use of water is important for sustainable crop production. Watermelon has high water requirements. The application of deficit irrigation (DI) strategies to this crop may greatly contribute to save irrigation water. A two-year study was conducted with the aim to evaluate the effects of DI on water productivity, yield and some quality properties of watermelon in a sub-humid environment in western Turkey. Five irrigation treatments [FI-Full, DI1-deficit=100% and 50% crop evapotranspiration (ETc) restoration during whole growing season, respectively; DI2=100% ETc up to flowering, then 50% ETc restoration; DI3=100% ETc up to yield formation, then 50% ETc restoration; DI4=100% ETc up to ripening stage, then 50% ETc restoration] were arranged in randomized complete block design with 3 replications in both experimental years. The maximum marketable fruit yield was determined from full irrigation level. Results showed that marketable yield significantly decreased by reduction in irrigation. In spite of the yield loses up to averagely 31% under DI1 conditions, saved 50% of water as compared to treatment of full irrigation. The highest values of total soluble solids and total sugar were found in treatments of DI1 and DI2. Higher values of vitamin C and lycopene were observed in DI3 treatment. Water productivity was positively affected by reduction in irrigation. Yield response factor (ky), which indicates the level of tolerance of a crop to water stress, was 1.01 for marketable yield, indicating that the reduction in crop productivity is proportionally equal to the relative ET deficit. The study revealed that the best compromise among water productivity, quantity and quality for watermelon was achieved with DI4 that 100% ETc up to ripening, then 50% ETc restoration.Item Effect of different concentrations of diluted seawater on yield and quality of lettuce(Inst Investigaciones Agropecuarias, 2014) Turhan, Ahmet; Kuşçu, Hayrettin; Özmen, Neşe; Serbeci, Mehmet Sıtkı; Demir, Ali Osman; Uludağ Üniversitesi/Mustafakemalpaşa Meslek Yüksekokulu/Bitkisel ve Hayvansal Üretim Bölümü.; Uludağ Üniversitesi/Ziraat Fakültesi/Biyosistem Mühendisliği Bölümü.; 0000-0002-1976-8082; AAG-5889-2021; AAH-4682-2021; AAG-5956-2021; AAG-5835-2021; 57196504252; 23667971600; 25623754300; 54788302500; 7102184446This study was carried out to investigate the effects of irrigating lettuce (Lactuca sativa L. cv. Fun ly) with different concentrations of diluted seawater (0%, 2.5%, 5%, 10%, 15%, 20%) on the fresh yield, marketable yield and quality (DM, total soluble solids, titratable acidity, total sugar, vitamin C, NO3-N, protein, and total oxalate content). The experiments were conducted in a greenhouse in the autumn of 2012. The fresh yield, marketable yield, and DM of lettuce irrigated with 2.5% and 5% seawater were similar to those of control, but these parameters decreased in response to 10% seawater, and the lowest values were obtained in response to 20% seawater. The 2.5% seawater treatment had no effect on the vitamin C and NO3-N content, but both significantly decreased when lettuce was irrigated with seawater concentrations higher than 2.5%. Total soluble solids, total sugar, and protein content significantly increased in response to low salinity (2.5% and 5%) but decreased in response to increasing seawater stress. The titratable acidity values remained unchanged under the various saline conditions. Irrigation with diluted seawater did not affect the total oxalate content up to a concentration of 5%, but increasing the concentration of seawater above 5% increased oxalate content. The results of this study demonstrated that low concentrations of seawater are suitable for lettuce production and lettuce can be grown successfully using diluted seawater at concentrations of 2.5% and 5%.Item Effect of humic acid on onion (Allium cepa L.) under saline condition(Parlar Scientific Puplications, 2018) Turhan, Ahmet; Özmen, Neşe; Kuşçu, Hayrettin; Uludağ Üniversitesi/Mustafakemalpasa Meslek Yüksekokulu/Bitkisel ve Hayvansal Üretim Bölümü.; Uludağ Üniversitesi/Ziraat Fakültesi/Biyosistem Mühendisliği Bölümü.; 0000-0002-1976-8082; AAG-5956-2021; AAG-5889-2021; AAH-4682-2021Salt stress inhibits plant growth, its yield and quality. This study was carried out to study the effect of humic acid (HA) as a plant growth stimulant in alleviating salt stress in onion bulbs. The onion plants were grown to maturity in metallic containers filled with soil in greenhouse conditions, then subjected to five salinity levels [0.3 (control), 2.0, 4.0, 6.0 and 8 dS/m] using NaCl combined with or without the soil application of 1.0 g/kg HA. Increasing salt concentration reduced the yield and quality of the onion bulbs. HA application resulted in higher yield than non-HA for all salt levels tested. It also resulted in higher dry matter yield of the onion bulbs, as well as total sugar, vitamin C and protein contents under different salinity levels as compared to the control but the soluble solids content remained unchanged in response to the HA application. These results suggest that soil application of HA has potential in improving onion yield and quality under salt stress.Item The effects of different doses of salt in the initial development periods of some sunflower genotypes(Scientific Issues Natl Centre Agrarian Sciences, 2011-08) Öz, Mehmet; Karasu, Abdullah; Turhan, Ahmet; Çelik, Hakan; Göksoy, Abdurrahim Tanju; Turan, Zeki Metin; Uludağ Üniversitesi/Ziraat Fakültesi/Toprak Bilimi Bölümü.; Uludağ Üniversitesi/Ziraat Fakültesi/Tarla Bitkileri Bölümü.; Uludağ Üniversitesi/Mustafa Kemal Paşa Meslek Yüksekokulu/Bitkisel ve Hayvansal Üretim Bölümü.; 0000-0003-4673-3843; 0000-0002-1976-8082; AAH-1754-2021; Y-5968-2018; AAG-5889-2021; AAG-9296-2021; AAE-5333-2021; 56865560200; 24174652100; 57196504252; 14624924600; 6603101276; 6505789772In this research carried out in the greenhouse of Uludag University, Mustafakemalpap Vocational School, the initial development of 11 lines (CMS01, CMS10, CMS23, RHA03, RHA10, CMS01 x RHA03. CMS01 x RHA10, CMS10 x RHA03, CMS10 x RHA10, CMS23 x RHA03 and CMS23 x RHA10) and two varieties (MAY AGRO and SANAY) of sunflower, with four different doses of salt (0, 4, 8 and 12 dSm(-1)) was examined. Ion analysis was done at the Faculty of Agriculture, Department of Soil Laboratory. The roots and leaves of the plants were analyzed for variation with respect to salt dosage in terms of the concentrations of Ca, Na and K and the ratios of Ca/Na and K/Na. According to our research results, Ca, K, Ca/Na and K/Na ratios as opposed to the increase of salt dose reduced, but Na ratios increased. Ca and K in the leaves and Na accumulated in the roots. The minimum and maximum average values of Ca in roots (2.02-3.46%) and leaves (1.87-3.41%); of K in roots (1.91-3.33%) and leaves (3.34-3.97%); values of Na in roots (2.48-5.67%) and leaves (1.63-3.09%) all changed. The CMS01 line had the highest concentrations of Ca and K, while the CMS23 line had the highest tissue concentration of Na.Item Effects of different salt concentrations (NaCl) on germination of some spinach cultivars(Uludağ Üniversitesi, 2010-07-21) Turhan, Ahmet; Kuşçu, Hayrettin; Şeniz, Vedat; Uludağ Üniversitesi/Mustafakemalpaşa Meslek Yüksekokulu.; Uludağ Üniversitesi/Ziraat Fakültesi/Bahçe Bitkileri Bölümü.Seeds of four spinach cultivars including Green Gold, Larisa, Mikado and Ohio were used to investigate the effects of different NaCl concentrations (0, 50, 100, 150 and 200 mM) on their germination percentage, germination energy, germination index, relative germination rate and germination time. The results showed that different treatments of salinity had statistically considerable effects on the germination percentage, germination energy, germination index, relative germination rate and germination time. Germination percentage and relative germination rate features of spinach cultivars were not influenced by 0–50 mM NaCl concentration, but germination energy values showed small decreases. In those features important decreases occurred by 100 mM concentration and the lowest values obtained at 200 mM. Despite the increase in germination time, germination index considerably decreased in accordance with the increasing salt concentrations. However, Green Gold cultivar demonstrated better performance than the other cultivars for most of measured parameters under different salinity levels.Item Effects of grafting on different rootstocks on tomato fruit yield and quality(Czech Academy Agricultural Sciences, 2011) Turhan, Ahmet; Özmen, Neşe; Şerbeci, Mehmet S.; Şeniz, Vedat; Uludağ Üniversitesi/Sağlık Hizmetleri Mesleki Yüksek Okulu.; Uludağ Üniversitesi/Ziraat Fakültesi/Bahçe Bitkileri Bölümü.; 0000-0002-1976-8082; AAG-5889-2021; AAG-5956-2021; AAG-5835-2021; 57196504252; 25623754300; 54788302500; 13604787100The aim of the study was to find effects of tomato grafting on another cultivar. The tomato cultivars used as scions were Yeni Talya, Swanson and Beril. Cultivars used as rootstocks were Beaufort and Arnold. Cleft grafting methods were applied. The following characteristics of grafted and nongrafted plants were recorded: fruit index, number of fruits/truss, fruit weight, fruit yield, dry matter, pH, concentration of soluble solids, titratable acidity, total sugar and lycopene and vitamin C. The results showed that fruit yield and fruit index, number of fruits/truss and fruit weights were improved by grafting. Fruit quality, measured in terms of dry matter, concentration of soluble solids, total sugar, and vitamin C content, was lower in the fruits of grafted plants than in nongrafted ones. No significant difference in lycopene and pH content was found. Titratable acid content was improved by grafting. A positive effect of grafting was recorded when Beaufort was used as rootstock. These results showed that grafting could be an advantageous alternative in tomato production.Item Effects of soil water deficit at different growth stages on yield and quality of processing tomato(International Society for Horticultural Science, 2016-11-08) Onus, A. N.; Turhan, Ahmet; Kuşcu, Hayrettin; Özmen, Neşe; Aydınol, Pınar; Seniz, Vedat; Demir, Ali Osman; Uludağ Üniversitesi/Mustafakemalpaşa Meslek Yüksekokulu/Bitkisel Üretim Bölümü.; Uludağ Üniversitesi/Mustafakemalpaşa Meslek Yüksekokulu/Gıda Teknolojisi Bölümü.; Uludağ Üniversitesi/Ziraat Fakültesi/Bahçe Bitkileri Bölümü.; Uludağ Üniversitesi/Ziraat Fakültesi/Biyosistem Mühendisliği Bölümü.; 0000-0002-1976-8082; 0000-0001-9600-7685; AAH-4682-2021; AAG-5889-2021; AAG-5956-2021; 57196504252; 23667971600; 25623754300; 48361146600; 13604787100; 7102184446In order to assess the effect of soil water deficit (SWD) at different growth stages, on yield and quality of processing tomato under deficit irrigation in the sub humid climate, an open-field experiment was carried out in 2010 and 2011 in the experimental site of the Mustafakemalpasa Vocational School, Uludag University, Turkey. A randomized complete block design with three replications was used. Four known growth stages the plant (V: vegetative, F: flowering, Y: yield formation and R: ripening) were considered and a total 15 irrigation treatments were applied (VFYR, FYR, VFY, VFR, VYR, VF, VY, VR, FY, FR, YR, V, F, Y and R). The effect of SWD at any stage of growth on fruit yield suitable for processing, soluble solid content, dry matter content, pH, total sugar, total acidity, lycopene, carotene and vitamin C, were evaluated. The results revealed that fruit yield and all quality parameters considered in this study were significantly affected by SWD due to omitted irrigation during the sensitive flowering and yield formation. Water deficits occurring during ripening stage increased values of soluble solid content, dry matter content, total sugar, total acidity, lycopene and total carotene. Highest yields were observed in the fully irrigated control (VFYR) and the treatment which allowed SWD during the vegetative stage (FYR). Even irrigations omission during one of the sensitive growth stages, caused up to a 10% loss of fruit yield. Much greater losses of 52-64% could be expected as a result of prolonged SWD during flowering and yield formation stages. In particular, relatively to the sub-humid areas of tomato cultivation, the best compromise between quality and quantity of the processing tomato fruit was achieved with omitted irrigations during only ripening stage (VFY treatment) although yield loss was about 5%.Item Estimation of certain chemical constituents of fruits of selected tomato genotypes grown in Turkey(Academic Journals, 2009-10) Turhan, Ahmet; Şeniz, Vedat; Uludağ Üniversitesi/Mustafakemalpaşa Meslek Yüksekokulu/Endüstri Tesisleri Yetiştirme ve Değerlendirme Bölümü.; Uludağ Üniversitesi/Ziraat Fakültesi/Bahçe Bitkileri Bölümü.; 0000-0002-1976-8082; AAG-5889-2021; 57196504252; 13604787100This research was carried out in years 2005 and 2006 in order to compare quality characteristics of some tomato genotypes grown in Turkey. In the study, 33 tomato (Lycopersicon esculentum Mill.) genotypes were used as plant material. Research was laid out in randomized block design with 3 replications, 10 plants in each replication. The fruit was analyzed for dry matter weight, sugar content, soluble solid content, titratable acids and pH contents. According to the results, 40443 and 62573 genotypes with their high values of dry matter content, sugar, soluble solid content and appropriate levels of titratable acids and pH contents should be considered potential candidates in future breeding, fresh and processing tomato programs.Item Farklı tuz konsantrasyonlarının Türkiye’de yetiştirilen bazı domates genotiplerinin çimlenmesi üzerine etkileri(Uludağ Üniversitesi, 2010) Turhan, Ahmet; Şeniz, Vedat; Uludağ Üniversitesi/Mustafa Kemal Paşa Meslek Yüksek Okulu.; Uludağ Üniversitesi/Ziraat Fakültesi/Bahçe Bitkileri Bölümü.Bu araştırma, farklı tuz konsantrasyonlarının (Kontrol, 8 ve 12dS/m) bazı domates genotiplerinin çimlenmesi üzerine olan etkilerini araştırmak amacı ile yapılmıştır. Çimlendirme testleri, tesadüf parselleri deneme desenine uygun olarak 6 tekerrürlü ve her tekerrürde 100 adet tohum olacak şekilde yürütülmüştür. Çimlendirme sabit sıcaklık ve nem koşulları altında yapılmıştır. Denemede tohumların çimlenme yüzdeleri (%) incelenmiştir. Araştırma sonuçlarına göre, farklı tuz konsantrasyonlarının çimlenme yüzdesi üzerine önemli etkisinin olduğu belirlenmiştir. Tüm genotiplerde çimlenme, tuz dozlarındaki artış ile birlikte önemli miktarda azalmıştır. Bu azalmalar tuz dozlarına ve genotiplere göre değişim göstermiştir. En yüksek çimlenme kontrol uygulamasından elde edilmiş ve tuz dozlarının artması ile azalmıştır. Diğer genotipler ile karşılaştırıldığında artan tuz konsantrasyonunun 40395, 47865, 40443, 47839 genotiplerinin çimlenme yüzdesini daha az düşürdüğü görülmüştür. Diğer deyişle, 40395, 47865, 40443, 47839 genotipleri çimlenme aşamasında artan tuz konsantrasyonlarından daha az etkilenmiştir.Item Farklı tuzluluk düzeylerinin sarımsakta (Allium sativum L.) verim ve bazı kalite özelliklerine etkisi(Galenos Publ House, 2014-02-19) Turhan, Ahmet; Kuşçu, Hayrettin; Özmen, Neşe; Demir, Ali Osman; Uludağ Üniversitesi/Mustafakemalpaşa Meslek Yüksekokulu/Bitkisel ve Hayvansal Üretim Bölümü.; Uludağ Üniversitesi/ Mustafakemalpaşa Meslek Yüksekokulu/Gıda İşleme Bölümü.; Uludağ Üniversitesi/Ziraat Fakültesi/Biyosistem Mühendisliǧi Anabilim Dalı.; 0000-0002-1976-8082; 0000-0001-9600-7685; AAH-4682-2021; AAG-5956-2021; AAG-5889-2021; 57196504252; 23667971600; 25623754300; 7102184446Bu çalışmada, Balıkesir sarımsağı üzerine farklı tuz dozlarının (1.60, 2.87, 4.14, 5.41, 6.68 ve 7.95 dS m-1) etkisi, verim ile toplam kuru madde, suda çözünür kuru madde, toplam şeker, toplam asit, vitamin C ve protein gibi bazı kalite özellikleri belirlenerek değerlendirilmiştir. Deneme tesadüf parselleri deneme desenine göre 6 yinelemeli olarak sera koşullarında yürütülmüştür. Sonuçlar, farklı tuz uygulamalarının baş verimi ve kalitesi üzerine istatistikî olarak önemli etkisi olduğunu göstermiştir. Baş verimi, toplam şeker ve asit içerikleri 2.87 dS m-1’ye kadar artış gösterirken, en yüksek suda çözünür kuru madde ve protein içeriği 4.14 dS m-1’de elde edilmiş, söz konusu düzeylerin üzerindeki tuzluluk seviyelerinde değerler azalmıştır. Benzer biçimde, toplam kuru madde miktarı 4.14 dS m-1’ye kadar toprak tuzluluğundan etkilenmemiş ancak bu düzeyden sonra önemli ölçüde azalmıştır. Ayrıca, tuzluluktaki artışla Vitamin C içeriği azalmıştır. Çalışma sonuçlarına göre, 4.14 dS m-1’ye kadar toprak tuzluluğunda yeterli düzeyde kaliteli ve verimli sarımsak yetiştirilebileceği belirlenmiştirItem Genotypic variation in the response of tomato to salinity(Academic Journals, 2009-03-20) Turhan, Ahmet; Eniz, Vedat; Kuşçu, Hayrettin; Uludağ Üniversitesi/Mustafakemalpaşa Meslek Yüksekokulu/Endüstri Tesisleri Yetiştirme ve Değerlendirme Bölümü.; Uludağ Üniversitesi/Ziraat Fakültesi/Bahçe Bitkileri Bölümü.; 0000-0002-1976-8082; AAH-4682-2021; AAG-5889-2021; 57196504252; 26644707500; 23667971600In order to determine the predictive screening parameters that can be applied at early development stages of tomato plants, 18 tomato cultivars were grown in nutrient solution with 12 dS m(-1) NaCl. The research was conducted in a completely randomized design with tree replications. The relationships among the salinity and root, stem, leaf accumulation, K+/Na+ and Ca2+/Na+ ratios and root-stem-leaf dry weights were investigated. At the end of treatment, regarding studied parameters morphologic and physiologic changes were determined depending on increasing NaCl concentrations. With increasing concentrations, it was determined that all growth parameters were decreased. However, this decrease in salt tolerant cultivars was restricted as compared to salt sensitive cultivars. It was also determined that by increasing NaCl applications, the amount of Na+ was increased and, the amount of Ca2+ and K+ ions were decreased in salt tolerant cultivars same with growth parameters. Thus, it was concluded that, more K+ or Ca2+ absorbing plant with high K+/Na+ and Ca2+/Na+ rations were more salt tolerant. At end of the study, it was determined that dry weights and K/Na+-Ca2+/Na+ ratios were very effective on the salt tolerance. Considering the cultivars, H-2710 was characterized as more salt tolerant under saline conditions.Publication Influence of chloride on growth, fruit yield and quality parameters of processing pepper(Kahramanmaras Sutcu Imam Univ Rektorlugu, 2021-01-01) Turhan, Ahmet; Özmen, Neşe; TURHAN, AHMET; ÖZMEN, NEŞE; Bursa Uludağ Üniversitesi/Mustafakemalpaşa Meslek Yüksek Okulu.; 0000-0002-1976-8082This study was carried out to investigate the effects of irrigation water containing different Cl- on plant growth parameters, fruit yield and quality characteristics of pepper (C. annuum L. cv. Postal Capija). Nutrient solutions containing Cl- concentrations were applied to processing pepper plants and effects of Cl- on growth parameters, fruit yield and quality traits, leaf water potential and chloride contents were determined. Greenhouse experiments were conducted with the Cl- concentrations [control (0.27), 1.5, 3.0, 4.5, 6.0, 7.5 and 15.0 mM] were applied to pepper plants. Plant height, fresh and dry weight, fruit yield and fruit weight, length and diameter were not affected by increasing Cl- concentrations up to 3.0 mM, but further increases in Cl- concentration negatively influenced this results. The greatest dry matter and soluble solids content were obtained from 3.0 and 4.5 mM Cl- treatments. Increasing Cl- concentration increased fruit acid content; the greatest acid content was from the greatest Cl- concentration. Increasing growing media Cl- concentration increased leaf Cl- accumulation and Cl- concentration >3.0 mM reduced leaf water potential. Research results showed that Cl- concentrations in irrigation water are important for efficient and economical pepper cultivation, and using water containing more than 3.0 mM chlorine will jeopardize yield and quality.Item The influence of irrigation water salinity and humic acid on nutrient contents of onion (Allium cepa L.)(Ankara Üniversitesi, 2019-02-17) Turhan, Ahmet; Aşık, Bülent Barış; Kuşçu, Hayrettin; Bursa Uludağ Üniversitesi/Mustafakemalpaşa Meslek Yüksekokulu/Bitkisel ve Hayvansal Üretim Bölümü.; Bursa/Uludağ Üniversitesi/Ziraat Fakültesi/Biyosistem Mühendisliği Bölümü.; 0000-0002-1976-8082; AAH-4682-2021; AAG-5889-2021; 57196504252; 35217629600; 23667971600Humic acid (HA) efficiently enhances the uptake of nutrients of plants, especially on saline soil. In this study, some nutrient contents of onion in response to salinity and HA application were investigated, and effects of HA application on salinity resistance was evaluated. Research plots were established as a randomized factorial design with four replications on a lysimeter and each replication included 10 plants. Plants in the lysimeters were irrigated with tap water (control, EC: 0.3 dS m(-1)) and four different doses of salinized water (EC: 2.0, 4.0, 6.0 and 8.0 dS m(-1)). The HA (0 and 1.0 g kg(-1)) was applied to the soil and mixed with the soil before planting. Increasing the levels of irrigation salinity decreased contents of K, Ca, N, P, Mg, Fe, Zn, Cu and B in onion bulbs; increased contents of Na, Cl and Mn. However, the highest content of K, Ca, and N in the bulbs were obtained by HA application under different salinity levels. Similarly, the soil application of HA positively was affected the P, Mg, Fe, Zn, B contents of the bulbs. While contents of Na, Mn, and Cu were not affected by soil application, Cl was decreased. The results showed that application of HA could partially reduce the harmful effects of salt, so HA can be used as an alternative method to improve product performance in saline conditions.Item Influence of rootstocks on yield and fruit characteristics and quality of watermelon(Korean Soc Horticultural Science, 2012-08) Turhan, Ahmet; Özmen, Neşe; Kuşçu, Hayrettin; Serbeci, Mehmet Sıtkı; Şeniz, Vedat; Uludağ Üniversitesi/Mustafakemalpaşa Meslek Yüksekokulu/Bitkisel ve Hayvansal Üretim Bölümü.; Uludağ Üniversitesi/Mustafakemalpaşa Meslek Yüksekokulu/Gıda Teknolojisi Bölümü.; Uludağ Üniversitesi/Ziraat Fakültesi/Bahçe Bitkileri Bölümü.; 0000-0002-1976-8082; AAG-5889-2021; AAG-5835-2021; AAH-4682-2021; AAG-5956-2021; 57196504252; 25623754300; 23667971600; 54788302500; 13604787100The objective of this study was to examine the effects of grafting and kinds of rootstocks on yield that are economically feasible for the watermelon producer. Fruit characteristics and quality attributes of grafted plants in open field conditions were also analyzed. The tongue approach grafting method was adopted. Three Watermelon cultivars of 'Crimson Tide', 'Dumara', and 'Farao' were used as the scion. Three hybrid squashes of 'Dynamo', 'RS-841', and 'Shintosa' were used as rootstocks. Results showed that some fruit quality indicators such as dry matter, total soluble solids, total sugar and titratable acid contents were lower in grafted plants while lycopene contents remained unchanged. The pH was slightly altered by grafting. Use of rootstock did not show advantages at comparable fruit quality indicators. Results also showed that fruit shape index, rind thickness, fruit weight, total yield and marketable yield were significantly influenced by grafting. Use of rootstocks significantly increased previously mentioned values which is related with yield, as compared to the non-grafted plant. Analyses proved the use of rootstocks as economically feasible and an advantageous alternative in watermelon production.Item Optimizing levels of water and nitrogen applied through drip irrigation for yield, quality, and water productivity of processing tomato (Lycopersicon esculentum Mill.)(Korean Soc Horticultural Science, 2014-04) Kuşçu, Hayrettin; Turhan, Ahmet; Özmen, Neşe; Aydınol, Pınar; Demir, Ali Osman; Uludağ Üniversitesi/Mustafakemalpaşa Meslek Yüksekokulu/Bitkisel ve Hayvansal Üretim Bölümü.; Uludağ Üniversitesi/Ziraat Fakültesi/Biyosistem Mühendisliği Bölümü.; 0000-0002-1976-8082; AAG-5889-2021; AAH-4682-2021; AAG-5956-2021; 23667971600; 57196504252; 25623754300; 48361146600; 7102184446The main goal of this study was to evaluate the effects of different levels of irrigation water and nitrogen on yield, quality, and water productivity of processing tomato grown in clay-loam soil. Three water levels of pan evaporation (E-pan) replenishment applied via drip irrigation (1.00 x E-pan, 0.75 x E-pan, and 0.50 x E-pan) and four N application rates with fertigation (0, 60, 120, and 180 kg N.ha(-1)) were tested in the sub-humid climate conditions of Turkey during the 2010 and 2011 growing seasons. The highest marketable yields were observed with full irrigation (1.00 x E-pan) for each season. Decreasing irrigation rate generally improved dry matter, total soluble solids, total sugars, titratable acidity, lycopene and total carotene, and decreased fruit NO3-N content and fruit total protein content slightly. The highest water productivity was obtained with a moderate soil water deficit (0.75 x E-pan). The 180 kg N.ha(-1) fertilization rate produced the highest values for marketable yield, fruit size, total soluble solids yield, NO3-N, and total protein content. Increasing N rate also increased the values of fruit total sugars and titratable acidity. Increasing both irrigation and N levels increased the NO3-N and protein contents. The higher lycopene and total carotene values were obtained in the treatments of 60 and 120 kg N.ha(-1). Increasing N supply improved the water productivity with the 3 irrigation application ratios. Considering the quantity and quality for the processing and water productivity, the 0.75 x E-pan irrigation regime and a 120 or 180 kg.ha(-1) nitrogen supply can considered optimal.Item Poliklorlu bifenillerin (PCB'ler) atmosferik konsantrasyonları ve toplam çökelme seviyeleri(Uludağ Üniversitesi, 2010-08-16) Turhan, Ahmet; Solmaz, Seval K. Akal; Uludağ Üniversitesi/Fen Bilimleri Enstitüsü/Çevre Mühendisliği Anabilim Dalı.Bu çalışmada, atmosferik çokklorlu bifenillerin (PCB) Bursa atmosferindeki konsantrasyonları, gaz/partikül dağılımları ve toplam çökelme akıları belirlenmiştir. Konsantrasyon örnekleri Haziran-2008 ile Haziran-2009 tarihleri arasında Uludağ Üniversitesi Kampüsü (UÜK), Tübitak Butal (TB), Mudanya (M) ve Yavuz Selim (YS) bölgelerinden toplanmış iken akı örnekleri ise aynı dönemde sadece YS'den alınmıştır. Gaz ve partikül faz hava örnekleri yüksek hacimli hava örnekleyicisi (YHHÖ) ile toplanmıştır. Toplam (gaz+partikül) ortalama atmosferik PCB konsantrasyonları UÜK, TB, YS ve Mudanya bölgeleri için sırasıyla 412 pg/m3, 394 pg/m3, 316 pg/m3 ve 570 pg/m3 olarak belirlenmiştir. PCB'lerin gaz-partikül faz yüzdeleri Mudanya, TB, UÜK ve YS bölgeleri için sırasıyla %85-%15, %95-%5, %84-%16 ve %91-%9 olarak tespit edilmiştir. Örneklerde 83 PCB türü araştırılmış ancak tüm türlere rastlanmamıştır. Örneklerde 3-klorobifeniller (CB'ler) baskın homolog grup olarak bulunmuştur. Atmosferik konsantrasyon sonuçları literatürdeki değerlerle benzerlik göstermiştir. Toplanan hava örnekleri uluslararası düzeyde kabul görmüş yöntemlerle analiz edilmiş olup GC-µECD ile ölçülmüştür.Bu çalışma kapsamında toplam çökelme örnekleyicisi (TÇÖ) ile PCB'lerin toplam çökelme akıları belirlenmeye çalışılmıştır. PCB'lerin ortalama toplam çökelme akı değerinin 6020±4350 pg/m2-gün olup 1340 ile 20360 pg/m2-gün arasında değiştiği belirlenmiştir. PCB'lerin toplam çökelme akılarının mevsimsel değişimi irdelendiğinde mevsimler arasında istatistiksel olarak bir farkın olmadığı ancak yaz ve kış periyodunda nispeten daha yüksek çökelme akılarının elde edildiği görülmektedir. Çökelme hızları (Vd), PCB'lerin çökelme akıları ve konsantrasyonlar kullanılarak hesaplanmıştır. Bu çalışmada kuru çökelme ve toplam çökelme hız değerleri sırasıyla 0,23 cm/s ve 0,13 cm/s olarak bulunmuştur.Item The response of processing tomato to deficit irrigation at various phenological stages in a sub-humid environment(Elsevier, 2014-02) Kuşçu, Hayrettin; Turhan, Ahmet; Demir, Ali Osman; Uludağ Üniversitesi/Mustafakemalpaşa Meslek Yüksekokulu/Bitkisel ve Hayvansal Üretim Bölümü.; Uludağ Üniversitesi/Ziraat Fakültesi/Biyosistem Mühendisliği Bölümü.; 0000-0002-1976-8082; AAG-5889-2021; AAH-4682-2021; 23667971600; 57196504252; 7102184446Field studies were conducted to determine the response of processing tomato (Lycopersicon esculentum Mill.) to deficit irrigation (DI) to guide programs for the development of improved irrigation management practices for sub-humid zones. Field experiments were conducted in Bursa province, Turkey. Industrial tomato plants (cv. Shasta) were subjected to different levels of irrigation using a drip system in the field on a clay-loam Entisol soil for 2 years. Well-watered plants were irrigated at100% crop evapotranspiration (ETc) with 3-day intervals. In other treatments, irrigation was not applied during the vegetative, flowering, yield formation or ripening stages or during combinations of these stages. Fruit weight, marketable yield (MY) and net income decreased with decreases in the amount of irrigation depending on the irrigation timing, but the effect of soil water deficit on the shape index was minor. The highest MY and fruit weight were obtained with the full irrigation (100% ETC) treatment. Water deficit by non-irrigation during the flowering and/or yield formation stages substantially reduced MY values in both years. The results showed that full irrigation during the whole growing season is preferable for higher yield and net income. However, in regions of water scarcity, irrigation managers should adopt the DI approach to achieve economically sustainable crop production. As an alternative to full irrigation during the entire growing season, the application of full irrigation until the beginning of the fruit ripening stage and the cessation of full irrigation after that time can be recommended as optimal because it achieved irrigation water savings of 33%, an increase of 42% in irrigation water use efficiency (IWUE), a satisfactory fruit soluble solids content (SSC) and an acceptable net income with a yield loss of only approximately 5% compared with full irrigation.