Person: KUŞÇU, HAYRETTİN
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KUŞÇU
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HAYRETTİN
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Publication Mathematical modelling of crop water productivity for processing tomato(Galenos Yayıncılık, 2019-01-01) Kuşcu, Hayrettin; KUŞÇU, HAYRETTİN; Ziraat Fakültesi; Biyosistem Mühendisliği Bölümü; 0000-0001-9600-7685; AAH-4682-2021Crop water productivity models (CWPMs) are of great importance in evaluating different irrigation programs. The mean goal of the study was to evaluate the performance of the Jensen, Minhas, Blank, Stewart and Rao CWPMs in predicting fruit yield of processing tomato. Field experiments were conducted for two consecutive growing seasons. The soil water stress sensitivity indices of the CWPMs were determined using experimental data from the second crop growing season. Yields simulated by the CWPMs were compared with the experimental data for the first season. The sensitivity indices for the crop growth stages were taken into account as appropriate weights of the soil water sensitivity of the vegetative, flowering, yield formation and ripening stages of the processing tomato crop. The results give evidence that processing tomato is much more sensitive to soil water stress during flowering and yield formation stages whereas the adverse impact of water stress on yield is very limited at vegetative stage. The highest modelling efficiency (0.96) between field-measured and simulated yield by the model, the lowest arithmetic mean of errors (0.04), mean absolute deviation (0.07), mean square error (0.02), absolute percentage error (12.76), root mean square error (0.15) and coefficient of residual mass (0.05) were achieved by Minhas model and followed by Rao model based on same parameters of statistical analyses. Both the Minhas and the Rao models with their soil water stress sensitivity indices generated for the different growth stages obtained in this study are recommended for the processing tomato in the sub-humid environments.Publication Adoption factors of irrigation systems whose projects are synchronized with land consolidation(Academic Publication Council, 2008-12-01) Yaslıoğlu, Erkan; Arıcı, İsmet; Kuşcu, Hayrettin; Gündoğdu, Kemal Sulhi; Aslan, S. Tülin Akkaya; Kirmikil, Müge; YASLIOĞLU, ERKAN; Arıcı, İsmet; KUŞÇU, HAYRETTİN; GÜNDOĞDU, KEMAL SULHİ; Aslan, S. Tülin Akkaya; KİRMİKİL, MÜGE; Ziraat Fakültesi; Biyosistem Mühendisliği Bölümü; 0000-0002-3865-7863; 0000-0001-9600-7685; 0000-0002-5591-4788; 0000-0001-5129-8642; AAH-4682-2021; N-9721-2013; ABW-2318-2022; ABE-6643-2020; AAH-2955-2021; ABI-4047-2020Agricultural land is fragmented in Turkey and in other Central European countries. Fragmented land prevents irrigation system efficiency to reach the desired level. In arid and semi-arid zones land consolidation offers opportunities for increased irrigation system efficiency.The objective of our study was to determine factors for adoption of irrigation system as related to land consolidation. The Logit regression model was used to analyse survey data. Villages on the Bursa-Karacabey Plain of Turkey, where land consolidation and irrigation system were planned, were used as study sites. Results show that supplying sufficient water in canals, ease of irrigation planning, reducing in water losses, ease of maintaining the irrigation and drainage system, and labour requirement significantly affected the adoption of irrigation systems.Publication The effect of different irrigation water amounts and nutrient solution applications on the yield, some yield components and water use efficiency of quinoa (chenopodium quinoa willd.)(Kahramanmaras Sutcu Imam Univ Rektorlugu, 2019-01-01) Çaygaracı, Aylin; Kuşcu, Hayrettin; KUŞÇU, HAYRETTİN; Fen Bilimleri Enstitüsü; Biyosistem Mühendisliği Bölümü; 0000-0001-9600-7685; AAH-4682-2021Water and plant nutrients are indispensable factors of agricultural production. In this study, the effects of different irrigation water levels and concentrations of Hoagland nutrient solution applied to quinoa plant on the vegetative growth, yield and some yield components of the plant were investigated. The study was conducted at the Research and Application Greenhouses of Agricultural Faculty, Bursa Uludag University. The experiment was arranged as a randomized split-plot design with 5 irrigation water levels (50, 75, 100, 125 and 150%) of the crop evapotranspiration (ETc) as the main plot factors and the concentrations of the standard Hoagland (H) nutrient solution (0.50H, 1.00H and 2.00H) as the subplot factor with four replications. Irrigation water was applied 306 mm with 919 mm to the experimental pots during the growing season. Seasonal ET values ranged from 306 mm to 741 mm. As the irrigation water level increased, the grain yield increased and the highest grain yield (334 kg da(-1)) was obtained from 150% ETc irrigation level and 2.00H nutrient solution concentration. Biomass yield and other yield components were significantly affected by varying levels of irrigation levels and / or nutrient solution concentrations.Publication Water-yield relationships of green pepper (Capsicum annuum) cultivated at different ırrigation levels(Bursa Uludağ Üniversitesi, 2024-05-08) KUŞÇU, HAYRETTİN; Yılmaz, Sinem; Ziraat Fakültesi; Biyosistem Mühendisliği Bölümü; 0000-0003-0150-7834; 0000-0001-9600-7685A field experiment was carried out in Bursa ecological conditions to determine the effects of different irrigation strategies on water-yield relationships of green pepper cultivation. In the study, where the amount of water evaporated from the class A pan (E) was taken as reference, different pan-crop coefficients (kpc: 0.25, 0.50, 0.75, and 1.00) were used for four irrigation treatments (S25: E×0.25, S50: E×0.50, S75: E×0.75, and S100: E×1.00) was created. While statistically significant (p<0.05) higher yields were obtained from S100 and S75 treatments, the yield decreased significantly from S50 and S25 treatments. The decrease in irrigation levels also caused a decrease in the size and diameter of the fruit. The highest water productivity was achieved from the S75 irrigation treatment. According to the results obtained, S75 irrigation treatment can be recommended in Bursa ecological conditions to obtain higher fruit yield both per unit area and per unit volume of water. Regarding S75, seasonally applied irrigation water was found to be 368.4 mm, evapotranspiration was 516.6 mm, fruit yield was 3629 kg da-1 and water productivity was 7.02 kg m-3Publication 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; Mustafakemalpasa Meslek Yüksekokulu; 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.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; 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 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; Mustafakemalpasa Meslek Yüksekokulu; Bitkisel ve Hayvansal Üretim 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 Effects of full and deficit irrigation on the growth and quality of cool-season turfgrasses under subsurface drip irrigation(Elsevier, 2023-11-22) BİLGİLİ, UĞUR; ARSLAN, BİLGE; CANDOĞAN, BURAK NAZMİ; Arslan, Bilge; Büyükcangaz, Hakan; BÜYÜKCANGAZ, HAKAN; Kumraltekin, Emir Doğan; KUŞÇU, HAYRETTİN; Kuşçu, Hayrettin; Yönter, Fikret; YÖNTER, FİKRET; Ziraat Fakültesi; Biyosistem Mühendisliği; AGD-4084-2022Irrigation is necessary in terms of achieving high-quality turfgrass. However, it is evident that more efficient and cost effective irrigation methods should be adapted for the sake of water conservation strategies since water consumption is high during turf irrigation. The objective of this study is to determine the effects of full and deficit irrigation with subsurface drip irrigation on growth and quality of perennial ryegrass (Lolium perenne L.) and tall fescue (Festuca arundinaceae Schreb) in a sub-humid climate of Turkey. Three irrigation treatments [I1 (full irrigation), I2 (mild water deficit, 75%), and I3 (moderate water deficit, 50%) were applied to the plants. Turf color and quality of each plot were rated visually, and clipping yields were collected. The amount of irrigation applied varied between 457.3 - 833.9 mm and 356.7 - 710.1 mm and seasonal crop evapotranspiration (ETa) values ranged from 578.4 to 1053.0 mm for tall fescue and 551.2 to 1044.0 mm for perennial ryegrass in 2018 and 2019, respectively. Among the species, tall fescue showed higher visual color, quality ratings and clipping yields. In cases where it does not matter for one or two weeks to be below the acceptable quality (<6) minimum annual irrigation amounts required to maintain quality was 689.1 mm for perennial ryegrass and 578.4 for tall fescue. The results have suggested that acceptable visual color and quality are sustainable in the tall fescue with mild water deficit application in regions where irrigation water is limited in sub-humid climates. Studies on water-saving strategies to turfgrass in regions where the climates varies from year to year are lacking in literature.Publication Determination of pipe diameters for pressurized irrigation systems using linear programming and artificial neural networks(Ankara Üniversitesi, 2023-01-01) Kurtulmuş, Ezgi; Kurtulmuş, Ferhat; Kuşcu, Hayrettin; Arslan, Bilge; Demir, Ali Osman; KURTULMUŞ, EZGİ; KURTULMUŞ, FERHAT; KUŞÇU, HAYRETTİN; ARSLAN, BİLGE; DEMİR, ALİ OSMAN; Ziraat Fakültesi; Biyosistem Mühendisliği Bölümü; 0000-0001-9600-7685; AAH-4682-2021; AAH-2936-2021; R-8053-2016; JOP-8553-2023; JLX-2232-2023Pressurized irrigation systems are widespread among other alternatives in Mediterranean countries. Since the initial investment costs of pressurized irrigation systems are quite high, it is crucial to determine design parameters such as pipe diameter. Most of the current optimization techniques for pipe diameter selection are based on linear, non-linear, and dynamic programming models. The ultimate aim of these techniques is to produce solutions to problems with less cost and computation time. In this study, a novel approach for determining pipe diameter was proposed using Artificial Neural Networks (ANN) as an alternative to existing models. For this purpose, three pressurized irrigation systems were investigated. Different ANN architectures were created and tested using hydrant level parameters of the irrigation systems, such as irrigated area per hydrant, hydrant discharge, pipe length, and hydrant elevation. Different training algorithms, transfer functions, and hidden neuron numbers were tried to determine the best ANN model for each irrigation system. Using multilayer feed-forward ANN architecture, the highest coefficients of determination were found to be 0.97, 0.93, and 0.83 for irrigation systems investigated. It was concluded that pipe diameters could be determined by using artificial neural networks in the planning of pressurized irrigation systems.Publication The effects of plastic mulched drip irrigation on yield, fruit quality and water productivity of table tomatoes(Springer, 2023-03-03) Karaer, Murat; Gültaş, Hüseyin Tevfik; Kuşçu, Hayrettin; KUŞÇU, HAYRETTİN; Ziraat Fakültesi; Biyosistem Mühendisliği Bölümü; 0000-0001-9600-7685; AAH-4682-2021This study examined the effects of different irrigation levels and plastic mulching on table tomatoes (Lycopersicon esculentum Mill., cv. Zahide) yield, fruit quality, and water productivity. A field experiment was conducted in western Turkey during the summer seasons of 2017 and 2018 at the Application and Research Station, University of Bilecik Seyh Edebali. The research was designed as a split-plot design with three replications. The main plots consisted of two mulch applications (mulch (M) and no mulch (NM)), and sub-plots were consisting of four drip irrigation levels (100% (IL100), 75% (IL75), 50% (IL50), and 25% (IL25) of the evaporation measured in the Class A Pan). IL100 treatment with mulch application obtained the highest marketable yields as 72.56 t ha(-1) in 2017 and 75.50 ha(-1) in 2018. Increasing irrigation water amounts decreased total soluble solids (TSS), total sugar, titratable acidity, and lycopene values. Fruit yield and fruit weight values were increased with increasing irrigation water amounts. The highest water productivity values were obtained from interaction IL25 x M in both years. Mulching increased water productivity, especially with an effect on plant water consumption. Therefore, for drip irrigation under plastic mulch, the IL100 irrigation level can be recommended under conditions where water resources are sufficient, and IL75 is recommended when insufficient.