Person: TURHAN, AHMET
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TURHAN
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AHMET
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Publication Response of red pepper (Capsicum annuum L.) to foliar applications of zinc(Taylor, 2021-02-21) Turhan, Ahmet; Kuşçu, Hayrettin; Özmen, Neşe; TURHAN, AHMET; KUŞÇU, HAYRETTİN; ÖZMEN, NEŞE; Bursa Uludağ Üniversitesi/Mustafakemalpaşa Meslek Yüksekokulu/Bitkisel ve Hayvansal Üretim Bölümü; Bursa Uludağ Üniversitesi/Ziraat Fakültesi/Biyosistem Mühendisliği Bölümü; Bursa Uludağ Üniversitesi/Mustafakemalpaşa Meslek Yüksekokulu/Gıda İşleme Bölümü; 0000-0002-1976-8082; 0000-0001-9600-7685; AAH-4682-2021; AAG-5889-2021; AAG-5956-2021An open-field study considering the responses of red pepper plants to foliar applications of zinc (Zn) was conducted with the aim to understand its effect on fresh fruit yield (FFY) and paste yield (PY), and some physical and quality properties of the fruits. Four different doses of Zn (control 0.0%, 0.05%, 0.10% and 0.20%) were applied from the plant leaves as zinc sulfate (ZnSO4.7H(2)O). The effect of Zn applications on plant height (PH) and crop canopy percentage (CCP) was in a positive direction. The longest plants were obtained from 0.10% Zn application. Treatments of 0.10% and 0.20% Zn positively affected the weight (FW), diameter (FD) and height (FH) of pepper fruits, significantly increased compared to control. The highest FFYs were obtained from 0.10% and 0.20% Zn applied plants. PY increased 33% in response to 0.10% Zn treatment when compared with control. The highest fruit dry matter (DM) was obtained from both applications (0.10% and 0.20% Zn), while the highest soluble solids content (SSC) was determined at 0.20% Zn application. These results indicate that foliar application of Zn could be considered for red pepper cultivation to improve plant development, yields and some quality properties, particularly in regions where Zn insufficiently is high.Publication The effect of saline water application on tomato fruit yield and some quality parameters(Parlar Scientific Publications (P S P), 2020-01-01) Turhan, Ahmet; TURHAN, AHMET; Bursa Uludağ Üniversitesi/Mustafakemalpaşa/Meslek Yüksekokulu, /Bitkisel ve Hayvansal Üretim Bölümü; 0000-0002-1976-8082; AAG-5889-2021This study was carried out to determine the effect of different salt concentrations on the yield and fruit quality of industrial tomato (Lycopersicon esculentum L.). The study was conducted using the randomized parcel design under greenhouse conditions with 4 replicates, 3 pots per replicate. The results of this study showed that salinity levels above 2.6 dS m(-1) significantly reduced marketable yield and paste yield. In the tomato fruits, the soluble solids content and total sugar content significantly increased at 6.6 dS m(-1), the water content and lycopene content significantly increased at 4.6 dS m(-1), and these values all decreased significantly when the salinity exceeded the a aforementioned levels. There was a positive relationship between the total acid contents of the fruit and the salinity, and the total acid values of the fruit increased as the salt concentrations increased. This study revealed that industrial tomatoes could be grown in salinity up to 2.6 dS m(-1) without any decrease in yield. However, the results also showed that some desirable fruit quality properties of the industrial tomatoes (soluble solids content, total sugars and acids, and lycopene) could be improved by increasing soil salinity by a fair amount (6.6 dS m(-1)).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.Publication The influence of irrigation strategies on tomato fruit yield and leaf nutrient contents(Springer, 2022-05-17) Turhan, Ahmet; Kuşcu, Hayrettin; Aşık, Bülent Barış; TURHAN, AHMET; KUŞÇU, HAYRETTİN; AŞIK, BARIŞ BÜLENT; Bursa Uludağ Üniversitesi/Mustafakemalpasa Meslek Yüksekokulu/Bitkisel ve Hayvansal Üretim Bölümü.; Bursa Uludağ Üniversitesi/Ziraat Fakültesi/Biyosistem Mühendisliği Bölümü.; Bursa Uludağ Üniversitesi/Ziraat Fakültesi/Toprak Bilimi ve Bitki Besleme Bölümü.; 0000-0002-1976-8082; 0000-0001-9600-7685; AAH-4682-2021; AAG-5889-2021; CEI-5442-2022In order to assess the effect of deficit irrigation (DI) on fruit yield and leaf nutrient contents of tomatoes in the Mediterranean climate, an open-field experiment was carried out in Bursa, Western Turkey. Experiments were conducted in randomized complete block design with three replications. Five irrigation treatments (IT) were studied: 100% (IT1, control), 75% (IT2) or 50% (IT3) evapotranspiration throughout the entire irrigation season; 100% of IT1 during the first half of the irrigation season (during 45 days from plantation) and 75% (IT3) or 50% (IT4) of IT1 during the second half of the irrigation season (about 45 days). The greatest fruit yield was obtained from IT1 treatment and significant decreases were observed in fruit yields with increasing water deficits. As compared to the control, IT4 treatment offered about 15% saving in irrigation water and a low level of reduction in yield (2.11%). Relatively high irrigation water productivity and water productivity values were obtained from IT2 and IT4 treatments. Effects of DI on water potential are also reflected in leaf nutrients. Reductions in water uptake resulted in reduced nutrient uptakes. The greatest leaf nutrient contents were observed in the IT4 treatment. Except for Mn and Cu, significant decreases in leaf nutrients with increasing water deficits were observed.Publication Improvement of root yield and ion content of carrot with exogenous application calcium under salinity(Springer, 2022-12-13) Turhan, Ahmet; Kuşcu, Hayrettin; TURHAN, AHMET; KUŞÇU, HAYRETTİN; Uludağ Üniversitesi/Mustafakemalpasa Meslek Yüksekokulu/Bitkisel ve Hayvansal Üretim Bölümü; Uludağ Üniversitesi/Ziraat Fakültesi/Biyosistem Mühendisliği Bölümü; 0000-0002-1976-8082; 0000-0001-9600-7685; AAH-4682-2021; AAG-5889-2021Effects of saline irrigation waters on carrot root yield and leaf nutrient accumulations and the potential role of supplementary calcium treatments in alleviating the harmful effects of saline irrigation waters were investigated. Experiments were conducted in a fully randomized-factorial experimental design with four replications. Carrot plants were subjected to 5 different NaCl (control, 20, 40, 60 and 80 mM) concentrations and 3 different supplementary Ca (0, 4 and 8 mM) treatments. Carrot root yields significantly decreased with increasing irrigation water salinity levels. Increasing irrigation water salinity levels reduced leaf macro and micronutrients and increased leaf Na and Cl contents. Supplementary Ca treatments increased root yields and leaf K, Ca, and P contents. Positive effects of supplementary Ca treatments were generally observed at low and moderate (& LE; 60 mM) salinity levels. Supplementary Ca treatments did not positively affect leaf Cl, Mg, Fe, Mn, Cu, and B contents. Reduced leaf Na content with supplementary Ca treatments is a remarkable outcome for the salt tolerance of the plants. Present findings revealed that supplementary Ca treatments could be used to improve crop performance in the case of low and moderate salinity levels in irrigation waters.