Browsing by Author "Ayas, Serhat"

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Deficit irrigation effects on broccoli (Brassica oleracea L. var. Monet) yield in unheated greenhouse condition
(Scientific Issues Natl Centre Agrarian Sciences, 2011-08) Orta, Halim; Ayas, Serhat; Yazgan, Senih; Uludağ Üniversitesi/Yenişehir İbrahim Orhan Meslek Yüksekokulu/Bitkisel ve Hayvansal Üretim Bölümü.; Uludağ Üniversitesi/Ziraat Fakültesi/Çiftlik Yapıları ve Sulama Bölümü.; C-4137-2019; 25031127400; 14022195900
The aim of this study was to determine the effect of deficit irrigation on yield for broccoli grown under unheated greenhouse condition. The research was carried out at the Agricultural Research Station of Yenisehir High School of Uludag University in Bursa, Turkey, in 2007. In the study, water was applied to broccoli as 1.00. 0.75, 0.50, 0.25 and 0.00% (as control) of evaporation from a Class A Pan corresponding to 2 day irrigation frequency. Irrigation water applied ranged from 70 to 522 mm, and water consumption ranged from 88 to 542 mm. The effect of irrigation water level on the yield, head height, head diameter, head weight and dry matter were found to be significant. The highest yield was 29.2 t ha(-1) Crop yield response factor (k(y)) was found as 1.04 The highest values for water use efficiency (WUE) and irrigation water use efficiency (IWUE) were found to be 6.71 and 6.50 kg m(-3) for the K2(cp) treatment. Under the conditions that water resources are scarce, it can be recommended that K2(cp) treatment is most suitable as a water application level for broccoli irrigation by drip irrigation under unheated greenhouse condition.
Deficit irrigation effects on cauliflower (Brassica oleracea L. var. Skywalker F1) yield under unheated greenhouse conditions.
(Parlar Scientific Publications (P S P), 2019-01-01) Büyükcangaz, Hakan; Ayas, Serhat; BÜYÜKCANGAZ, HAKAN; AYAS, SERHAT; Bursa Uludağ Üniversitesi/Ziraat Fakültesi/Biyosistem Mühendisliği Bölümü.; Bursa Uludağ Üniversitesi/Yenişehir İbrahim Orhan Meslek Yüksekokulu.; C-4137-2019; AAH-2934-2021
The aim of this study was to determine the effect of deficit irrigation on yield of cauliflower grown under unheated greenhouse conditions. The research was carried out at the Agricultural Research Station of Yenisehir Vocational School of Bursa Uludag University in Bursa, Turkey, in 2008 and 2009. In the study, water was applied to cauliflower as 1.00, 0.75, 0.50, 0.25 and 0.00 % (as control) of evaporation from a Class A Pan corresponding to 2 day irrigation frequency. Irrigation water applied ranged from 70-530 mm to 70-528 mm, and water consumption ranged from 90-548 mm to 90-540 mm. The effect of irrigation water level on the yield, head height, head diameter, head weight and dry matter were found to be significant. The highest yield were 30.4-28.8 t ha(-1). Crop yield response factors for cauliflower (k(y)) were found as 0.90 and 0.93 for both years. The highest values of water use efficiency (WUE) and irrigation water use efficiency (IWUE) for 2008 and 2009 years of K2(cp) treatment were calculated to be 0.069 kg m(-3) - 0.064 kg m(-3) and 0,067 - 0,064 kg m(-3), respectively. K2(cp) application (75%) can be recommended as the most effective irrigation level for the cauliflower to which drip irrigation is applied under scarce and unheated greenhouse conditions.
Deficit irrigation effects on cucumber (Cucumis sativus L. Maraton) yield in unheated greenhouse condition
(Wfl Publication, 2009-07) Ayas, Serhat; Demirtaş, Çiğdem; Uludağ Üniversitesi/Yenişehir İbrahim Orhan Meslek Yüksekokulu/Bitkisel ve Hayvansal Üretim Bölümü.; Uludağ Üniversitesi/Ziraat Fakültesi.; C-4137-2019; 25031127400; 15847626100
The aim of this study was to determine effect of deficit irrigation on yield for cucumber grown under unheated greenhouse condition. The research was carried out at the Agricultural Research Station of Yenisehir High School of Uludag University in Bursa, Turkey, in 2007. In the study, water was applied to cucumber as 100, 75, 50, 25 and 0% (as control) of evaporation from a Class A Pan corresponding to 2-day irrigation frequency. Irrigation water applied to crops ranged from 75 to 420 mm, and water consumption ranged from 84 to 424 mm. The effect of irrigation water level on the yield, fruit length, fruit diameter, fruit weight and dry matter ratio were found to be significant. The highest yields were 148 and 108 t ha(-1) for the K1(cp) and K2(cp) treatments, respectively. Crop yield response factor (k(y)) was 1.213. The highest values for water use efficiency (WUE) and irrigation water use efficiency (IWUE) were found to be 34.91 and 31.90 kg mm(-1) for the K1(cp) treatment. Under the conditions that water resources are scarce, it can be recommended that K1(cp) treatment is most suitable as a water application level for cucumber irrigation by drip irrigation under unheated greenhouse condition.
Deficit irrigation effects on onion (Allium cepa L. E.T. Grano 502) yield in unheated greenhouse condition
(Wfl Publication, 2009) Ayas, Serhat; Demirtaş, Çiğdem; Uludağ Üniversitesi/Yenişehir İbrahim Orhan Meslek Yüksekokulu/Bitkisel ve Hayvansal Üretim Bölümü.; Uludağ Üniversitesi/Ziraat Fakültesi/Biyosistem Mühendisliği Bölümü.; C-4137-2019; 25031127400; 15847626100
The aim of this study was to determine the effect of deficit irrigation on yield of onion grown under unheated greenhouse condition. The research was carried out at the Agricultural Research Station of Yenisehir High School of Uludag University in Bursa, Turkey, in 2007. In the study, water was applied to onion as 100, 75, 50, 25 and 0% (as control) of evaporation from a Class A Pan corresponding to 2-day irrigation frequency. Irrigation water applied to crops ranged from 65 to 362 mm, and water consumption ranged from 95 to 372 mm. The effect of irrigation water level on the yield, bulb heigth, bulb diameter, bulb weight and dry matter ratio were found to be significant. The highest yields were 51 and 39 t ha(-1) for the K1(cp) and K2(cp) treatments, respectively. Crop yield response factor (k(y)) was found as 1.060. The highest values for water use efficiency (WUE) and irrigation water use efficiency (IWUE) were found to be 13.84 and 12.71 kg mm(-1) for the K3(cp) treatment. Under the conditions that water resources are scarce, it can be recommended that K3(cp) treatment is most suitable as a water application level for cucumber irrigation by drip irrigation under unheated greenhouse condition.
Deficit irrigation effects on pepper (Capsicum annuum L. Demre) yield in unheated greenhouse condition
(Wfl Publ, 2009) Demirtaş, Çiğdem; Ayas, Serhat; Uludağ Üniversitesi/Ziraat Fakültesi/Biyosistem Mühendisliği.; Uludağ Üniversitesi/Yenişehir Meslek Yüksekokulu/Bitkisel ve Hayvansal Üretim Bölüm.; C-4137-2019; 15847626100; 25031127400
The aim of this study was to determine the effect of deficit irrigation on yield for pepper grown under unheated greenhouse condition. The research was carried out at the Agricultural Research Station of Yenisehir High School of Uludag University in Bursa, Turkey, in 2007. In the study, water was applied to pepper as 100, 75, 50, 25 and 0% (as control) of evaporation from a Class A pan (K1(cp) 1.00, K2(cp) 0.75, K3(cp) 0.50, K4(cp) 0.25, K5(cp) 0.00-control) corresponding to 2-day irrigation frequency. Irrigation water applied to crops ranged from 65 to 724 mm, and water consumption ranged from 115 to 740 mm. The effect of irrigation water level on the yield, fruit heigth, diameter and weight and dry matter ratio were significant. The highest yields were 24 and 19 t ha(-1) for the K1(cp) and K2(cp) treatments, respectively. Crop yield response factor (k(y)) was 1.07. The highest values for water use efficiency (WUE) and irrigation water use efficiency (IWUE) were 3.13 and 3.39 kg mm(-1) for the K2(cp) treatment. Under the conditions that water resources are scarce, it can be recommended that K2(cp) treatment is most suitable as a water application level for pepper irrigation by drip irrigation under unheated greenhouse condition.
Different irrigation and fertilization levels and mulching materials on the yield and quality of strawberry
(University Federal Lavras - UFLA, 2023) Ayas, Serhat; AYAS, SERHAT; Bursa Uludağ Üniversitesi/Yenişehir İbrahim Orhan Meslek Yüksekokulu; 0000-0002-9630-9699; C-4137-2019
The strawberry (Fragaria spp.), one of the most important berry fruit, is cultivated in many regions of Turkey. Considering its agricultural importance, the objective of this study was to determine the interactions of three important factors affecting the yield of strawberries. Measurements of the physical and quality properties of strawberry were carried out in the laboratories of Bursa Uludag University. In the research, four different irrigation topics, three different fertigation and three different mulching topics (without mulch (M0),with PE black mulch material (M1), with PE transparent mulch matterial (M2) were selected. Drip irrigation method was preferred in order to apply water amounts at different irrigation and fertigation levels. In our study, the highest and lowest irrigation water amounts in both trial years were found to be 380-95 mm and 420-105 mm, respectively, while the highest and lowest actual evapotranspiration values were calculated as 440-220 mm and 465-280 mm, respectively. The maximum and minimum yield values of the study years were calculated as 5.05-18.70 t ha-1 and 1.20-8.7 t ha-1, respectively, from I100F100M1 and I25F50M0 treatments. However, when the reductions in yield and quality losses are evaluated together, despite the reductions in irrigation water and fertigation levels, I75and F75 topics can be recommended. Also, in mulching treatments, black mulch material (M1) should be chosen over clear mulch material (M1) and no mulch (M0).
Different irrigation and fertilization levels on the yield and quality of dent corn
(Univ Federal Lavras-ufla, 2023-01-01) Ayas, Serhat; AYAS, SERHAT; Bursa Uludağ Üniversitesi/Yenişehir İbrahim Orhan Meslek Yüksekokulu; C-4137-2019
Dent Corn (Zea mays indentata indentata), one of the most important plants produced for industrial purposes in many regions of Turkiye. The aim of this study was to determine the interactions of two important factors affecting the yield of dent corn. The study was conducted at the Bursa Uludag University Yenisehir Ibrahim Orhan Vocational School Agricultural Research Field in 2019-2020. The altitude of the study area was 240 m. Measurements of the physical and quality properties of dent corn were carried out in the laboratories of Bursa Uludag University. In the research, four different irrigation topics and three different fertigation topics were selected. Drip irrigation method was preferred in order to apply water amounts at different irrigation and fertigation levels. In our study, the highest and lowest irrigation water amounts in both trial years were found to be 780-195 mm and 800-200 mm, respectively, while the highest and lowest actual evapotranspiration (ETa) values were calculated as 830-290 mm and 855-432 mm, respectively. The maximum and minimum yield values of the study years were calculated as 14.6-15.2 t ha-1 and 4.0-5.1 t ha-1, respectively, from I100F100 and I25F50treatments. However, when the reductions in yield and quality losses are evaluated together, despite the reductions in irrigation water and fertigation levels, I75and F75 treatments can be recommended.
Effects of deficit irrigation on yield and quality of unheated greenhouse grown green bean
(Wfl Publ, 2008-04) Büyükcangaz, Hakan; Yazgan, Senih; Ayas, Serhat; Candoǧan, Burak Nazmi; Ayas, Fusun; Uludağ Üniversitesi/Ziraat Fakültesi/Tarımsal Yapılar ve Sulama Bölümü.; Uludağ Üniversitesi/Ziraat Fakültesi/Bitkisel ve hayvansal Üretim Bölümü.; C-4137-2019; AAH-2934-2021; 6504449925; 14022195900; 25031127400; 14021271200; 25031095700
This study was conducted to determine effect of deficit irrigation on yield for green bean grown under unheated greenhouse condition. The research was carried out at the Agricultural Research Station of Yenisehir High School of Uludag University in Bursa, Turkey, in 2007. In the study, water was applied to green bean as 100, 75, 50, 25 and 0% (as control) of evaporation from a Class A Pan corresponding to 2-day irrigation frequency. Irrigation water applied to crops ranged between 40 and 579 mm, and water consumption ranged between 47 and 582 mm. Irrigation treatments significantly affected fresh bean yield, length and width of green bean, number of seeds per pod, 100 bean weight and dry pod weights percent. The highest yields were 18.88 and 11.64 t ha(-1) for the K1(cp) and K2(cp) treatments, respectively. The lowest yield was found from K1(cp) as 3.26 t ha(-1). Crop yield response factor (k(y)) was 1.066. The highest values for water use efficiency (WUE) and irrigation water use efficiency (IWUE) were 32.44 and 26.98 and 27.74 and 21.29 kg mm(-1) for the K1(cp) and K3(cp) treatments, respectively. Under the conditions that water resources are scarce, it can be recommended that K3(cp) treatment is most suitable as a water application level for green bean irrigation by drip irrigation under unheated greenhouse condition.
Kısıntılı sulanan patatesin su-verim ilişkisi
(Uludağ Üniversitesi, 2007) Ayas, Serhat; Korukçu, Abdurrahim; Uludağ Üniversitesi/Fen Bilimleri Enstitüsü/Tarımsal Yapılar ve Sulama Anabilim Dalı.
Bu çalışmada, patates bitkisinin su-verim iliskilerinin belirlenmesi amacıyla, Bursa ve yöresinde yetiştirilen Hermes patates çeşidinin farklı gelişme dönemlerinde uygulanan su kısıntılarının verim ve kalite parametreleri üzerine olan etkisi araştırılmıştır. Bu amaçla, Bursa ili Yenişehir ilçesinde 2004 ve 2005 yıllarında Hermes patates çeşidine ilişkin tarla denemesi kurulmuş, patates bitkisinin 4 farklı gelişme döneminde (vejetatif gelişme, yumru oluşumu, yumru gelişimi ve olgunlaşma) su kısıntısının olması (toprak nem düzeyinin tarla kapasitesine getirilmesi için gerekli olan suyun % 50'si uygulanmış) ve olmaması (toprak nem düzeyinin tarla kapasitesine getirilmesi için gerekli olan suyun % 100'ü uygulanmış) koşullarında 16 farklı sulama konusu oluşturularak, elde edilen verim ve kalite parametreleri değerlendirilmiştir. Patateste kısıntılı düzeyde uygulanan su miktarının, bitkinin yumru gelişimi ve yumru oluşumu dönemlerinde en yüksek, olgunlaşma döneminde ise en az verim ve kalite kayıplarına yol açtığı sonucuna varılmıştır. Sonuç olarak, araştırmada değerlendirilen; dekara yumru verimi, ortalama yumru çapı, teksel yumru ağırlığı, ortalama yumru boyu, yumru kuru madde oranı, yumru nişasta oranı, bitki basına yumru adedi, bitki basına anasap adedi, pazarlanabilir yumru oranı, bitki çıkış (sürgün) oranı, yumru kabuk oranı, bitkinin dört farklı gelişme dönemi sonunda ölçülen bitki boyları üzerinde kısıntılı sulamanın önemli etkisinin olduğu söylenebilir.
Water-yield relationships in deficit irrigated potato
(Uludağ Üniversitesi, 2010) Ayas, Serhat; Korukçu, Abdurrahim; Uludağ Üniversitesi/Yenişehir İbrahim Orhan Meslek Yüksek Okulu.; Uludağ Üniversitesi/Ziraat Fakültesi/Tarımsal Yapılar ve Sulama Bölümü.
This study was conducted in Yenişehir, Bursa between 2004 and 2005 so as to investigate the effect of water deficiency applied in different growth periods of potato on yield and quality parameters. In this study, ten different irrigation treatments in four different growth periods (vegetative growth, tuber formation, tuber bulking and ripening) of potato plant (Solanum Tuberosum L, Hermes) were formed and the yield and quality parameters obtained from these treatments were evaluated. Depending on the treatments, the amount of irrigation water applied to the plants ranged between 345 and 585 mm in the first year, and between 286 and 485 mm in the second year and plant water consumption varied between 399 and 655 mm in the first year and between 370 and 646 mm in the second year. Yield, average tuber weight, average tuber diameter, average tuber size, tuber dry matter ratio, tuber starch ratio, the number of tubers per plant, the number of main stems per plant, tuber peel ratio, the rate of marketable tuber ratio and plant height values were found statistically significant. In both of the years, the highest levels of yield were obtained as 32.3 t ha-1 and 35.0 t ha-1 in the treatments in which full irrigation was conducted in all growth periods, while the lowest levels of yield were obtained as 12.1 t ha-1 and 10.9 ha-1 in the treatments in which 50% water deficiency was applied in all growth periods respectively. Water- yield relationship factor (ky) was found as 0.909 on average. The highest values of water use efficiency (WUE) and irrigation water use efficiency (IWUE) were obtained as 5.23 and 4.35 respectively only in the treatment in which deficit irrigation was given only in ripening period and full irrigation was applied in the other periods.
Water-yield relationships of deficit irrigated tomato (Lycopersicon lycopersicum L. var. hazar F1)
(Corvinus Univ Budapest, 2019-01-01) Ayas, Serhat; AYAS, SERHAT; Uludağ Üniversitesi/Yenişehir İbrahim Orhan Meslek Yüksekokulu; C-4137-2019
This trial was realized in the greenhouses of Uludag University Yenisehir Vocational School in Bursa province of Turkey between 2009 and 2010 to investigate effects of water deficit on yield and quality parameters of tomato during four crop growth stages. In this trial, fourteen irrigation treatments in four growth periods (vegetative, flowering, yield formation and ripening) of tomato (Lycopersicon lycopersicum L. var. Hazar F1) were constituted and the yield and quality parameters found from these treatments were evaluated. The layout of the experiment was a completely randomized block design with three replications for each of the fourteen irrigation treatments tested. According to the content of the treatments, the irrigation amount water applied to the plants varied between 0 and 554 mm in the first year, and between 0 and 556 mm in the second year. Water consumption of tomato in the first year ranged between 300 and 725 mm and in the second year ranged between 340 and 746 mm. Yield, fruit weight, diameter, height and dry matter ratio were determined statistically significant. In 2009 and 2010 years, the maximum yield were found as 92.2 t ha(-1) and 93.4 t ha(-1) in V100F100Y100R100 treatments, while the minimum yield were found as 2.0 t ha(-1) and 4.0 ha(-1) in the V0F0Y0R0 treatments, respectively. Water- yield relationship factors (k(y)) in 2009 and 2010 years were found as 1.05 and 1.06, respectively. The maximum WUE and IWUE values were obtained from vegetative and ripening periods. Vegetative and ripening periods may be suggested as the maximum efficient irrigation periods for the tomato applied with drip irrigation under unheated greenhouse conditions.