Browsing by Author "Bilgili, Uǧur"
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Item Control of a new turf pest, Dorcadion pseudopreissi (Coleoptera: Cerambycidae), with the entomopathogenic nematode Heterorhabditis bacteriophora(Springer Heidelberg, 2011-09) Susurluk, İsmail Alper; Kumral, Nabi Alper; Bilgili, Uǧur; Açıkgöz, Esvet; Uludağ Üniversitesi/Ziraat Fakültesi/Bitki Koruma Bölümü.; Uludağ Üniversitesi/Ziraat Fakültesi/Tarla Bitkileri Bölümü.; 0000-0001-9442-483X; A-1388-2019; AAH-1539-2021; AAG-7131-2021; 11439641200; 15846048400; 6506803244; 6602817346The use of biological control in turf has increased to avoid possible negative effects on humans. Entomopathogenic nematodes (EPNs) belonging to the families Steinernematidae and Heterorhabditidae have control potential against many economically important insect pests. In the present study, the efficacy of Heterorhabditis bacteriophora against a new pest on turf, Dorcadion pseudopreissi, was examined in the field. Cages (1 x 1 x 1 m) with female and male D. pseudopreissi were placed on two kinds of turf: Lolium perenne and Festuca arundinacea. After beetles had deposited eggs into the moist soil surface, the cages were removed and H. bacteriophora was applied at 0.5 million infective juveniles/m(2) to half the plots. Application of H. bacteriophora caused a statistically significant reduction in numbers of beetle larvae in L. perenne plots and a non-significant reduction in F. arundinacea plots. The area damaged by D. pseudopreissi was significantly reduced by nematode application in both turf species. The number of nematodes declined after application, but small numbers could still be detected after 6 months.Item Effects of slow-release fertilizers on turf quality in a turf mixture(Ege Üniversitesi Ziraat Fakültesi, 2011) Bilgili, Uǧur; Açıkgöz, Esvet; Uludağ Üniversitesi/Ziraat Fakültesi/Tarla Bitkileri Bölümü.; AAH-1539-2021; 6506803244; 6602817346A 2-year field study was conducted to determine the influence of the timing of application and different slow release nitrogen (N) sources with different nitrogen rates on the growth and quality of a turfgrass mixture. Three different timings were used for nitrogen application: annually, once every 3 months, and once every 6 months. Three nitrogen sources (ammonium nitrate and two slow-release fertilizers, Entec and Osmocote) were used in the trial. Annually applications were carried out at rates of 0 (control) g m(-2), 30 g m(-2), 60 g m(-2), 90 g m(-2). Results of this study showed that both slow-release fertilizers had significantly higher ratings of color and quality and significantly higher clipping yields compared with the control (ammonium nitrate) during the fall and winter seasons. During the other seasons, the slow-release fertilizers produced equal, slightly higher or slightly lower color and quality ratings and clipping yields, compared with the control. It should be noted that an acceptable color rating and turf quality were obtained in the fall and winter seasons with 60 and 90 g N m(-2) yr(-1) of slow release fertilizers.Item Effects of wastewater sludge on growth of perennial ryegrass (Lolium perenne L.)(Ege Üniversitesi Ziraat Fakültesi, 2011) Uzun, Pervin; Bilgili, Uǧur; Uludağ Üniversitesi/Ziraat Fakültesi/Tarla Bitkileri Bölümü.; 0000-0003-3781-1838; AAH-1539-2021; 50263251200; 6506803244The objectives of this study were to evaluate the effects of sun dried wastewater sludge (SDS) and peat amendments on perennial ryegrass (Lolium perenne L.) growth, as well as to identify the optimum rates of amendments and impact of irrigation frequencies for turfgrass production. The experiments were conducted over a 40-day period under greenhouse conditions in Bursa, Turkey in 2008 and 2009. The experimental design was a randomized split-split plot design with three replications. Irrigation frequencies served as main plots, amendments were subplots, and cover mixture rates were sub-subplots. Wastewater sludge samples were obtained from the Food Company, where the domestic and industrial wastewater was treated together. Results showed that the content of plant nutrient matter of SDS was high and its heavy metal contents were found below the critical levels according to the soil pollution control instructions. Based on these observations, we recommend amending soils with 50-75% SDS for optimum Lolium perenne L. growth. SDS amendment at these levels can greatly improve the soil nutrient supply without significantly affecting its heavy metal and soluble salt contents.Item Effects of wastewater sludge topdressing on color, quality, and clipping yield of a turfgrass mixture(Amer Soc Horticultural Science, 2011-09) Bilgili, Uǧur; Şağban, Fatma Olcay Topaç; Sürer, İrfan; Çalışkan, Necla; Uzun, Pervin; Açıkgöz, Esvet; Uludağ Üniversitesi/Ziraat Fakültesi/Tarla Bitkileri Bölümü.; Uludağ Üniversitesi/Mühendislik Fakültesi/Çevre Mühendisliği Bölümü.; 0000-0002-6364-4087; AAH-1853-2021; AAH-1539-2021; 6506803244; 52464208200; 52464590800; 57213336818; 50263251200; 6602817346The objectives of the present study were to determine the effects of the rate and timing of the application of sun-dried wastewater sludge from a food processing company's wastewater system on turfgrass growth and quality. The results were compared with those obtained with ammonium nitrate, and changes in the concentration of heavy metals and the presence of fecal coliform in turf soils after sun-dried wastewater sludge application were determined. The rate and the timing of sun-dried wastewater sludge and ammonium nitrate applications affected the turf color, quality, and clipping yield. Monthly fertilization resulted in a more uniform color and turf quality than infrequent spring and fall fertilization. Compared with the background values of base soils, heavy metals did not accumulate in sun-dried wastewater sludge-amended soils over the test period. Fecal coliform was not detected in sludge-amended soil samples, indicating that bacteria regrowth did not occur during the study period.Item Growth and quality responses of tall fescue (Festuca arundinacea Schreb.) to different irrigation levels and nitrogen rates(Soc Field Crop Sci, 2014) Candoǧan, Burak Nazmi; Bilgili, Uǧur; Yazgan, Senih; Açıkgöz, Esvet; Uludağ Üniversitesi/Ziraat Fakültesi/Biyosistem Mühendisliği Bölümü.; Uludağ Üniversitesi/Ziraat Fakültesi/Tarla Bitkileri Bölümü.; AAH-1539-2021; AAH-3102-2021; 14021271200; 6506803244; 14022195900; 6602817346A 2-year experiment was conducted to investigate the effects of different irrigation levels and nitrogen rates on visual turfgrass colour and quality and clipping yield of tall fescue (Festuca arundinacea Schreb.) under subhumid climatic conditions. The treatments consisted of five levels of irrigation, 25% (I-1), 50% (I-2), 75% (I-3), 100% (I-4) and 125% (I-5), of the evaporation measured from a Class A pan and two rates of nitrogen, 25 kg N ha(-1) (N-1) and 50 kg N ha(-1)(N-2). The N rates were applied as a monthly rate during growing seasons (May-September). The experimental area was irrigated by a pop-up sprinkler irrigation system. The irrigation was applied at 3-day intervals during May-September for both years. The seasonal crop evapotranspiration (ETc) under the treatments ranged from 315 to 1154 mm in 2007 and from 363 to 1100 mm in 2008. The ETc increased with increasing the both N rate and irrigation level, and the best seasonal turf quality of tall fescue was obtained for the I-4 and I-5 treatments under N-2 rate. This study demonstrated that, when the level of irrigation and nitrogen rate were evaluated together, the N2I4 treatment ensured sufficiently dark turf colour and quality. Based on the results of this study, it is concluded that an acceptable turf quality can be sustained under the N1I1 treatment in May, N1I2 treatment in June, July and August and N1I4 treatment in September (or N2I2 treatment in September) according to water conservation. When rainfall amountis high (132.2 mm) in September, the N1I1 treatment may sustain acceptable turf quality for this month.Item The influence of row spacing and seeding rate on seed yield and yield components of forage turnip (Brassica rapa L.)(Wiley, 2003-08) Bilgili, Uǧur; Sincik, Mehmet; Uzun, Ayşen; Açıkgöz, Esvet; Uludağ Üniversitesi/Ziraat Fakültesi/Tarla Bitkileri Bölümü.; AAH-1539-2021; AAH-1811-2021; AAG-7431-2021; 6506803244; 23989507900; 13004441000; 6602817346The effects of four row spacings (17.5, 35.0, 52.5 and 70.0 cm) and five seeding rates (50, 100, 200, 400 and 800 viable seeds m-2) on seed yield and some yield components of forage turnip (Brassica rapa L.) were evaluated under rainfed conditions in Bursa, Turkey in the 1998-1999 and 1999-2000 growing seasons. Plant height, stem diameter, pods/terminal raceme, total pods/plant, seeds/pod and primary branches/plant were measured individually. The number of plants per unit area was counted and the lodging rate of the plots was scored. The seed yield and 1000-seed weight were also determined. Row spacing and seeding rate significantly affected most yield components measured. The number of plants per unit area increased with increasing seeding rate and decreasing row spacing. Plant height was not greatly influenced by row spacing and seeding rate, but higher seeding rates reduced the number of primary branches and the stem diameter. The number of pods/main stem was affected by row spacing and but not by the seeding rate. Also, the number of seeds per pod was not affected by either the row spacing or the seeding rate. In contrast, the number of pods per plant clearly increased with increasing row spacing, but decreased with increasing seeding rate. The plots seeded at narrow row spacings and at high seeding rates were more sensitive to lodging. Seeding rate had no significant effect on seed yield in both years. Seed yield was similar at all seeding rates, averaging 1151 kg ha-1. However, row spacing was associated with seed yield. The highest seed yield (1409 kg ha-1) was obtained for the 35.0-cm row spacing and 200 seeds m-2 seeding rate combination without serious lodging problems.Item Response of a cool-season turf mixture to composted chicken manure in a mediterranean environment(Taylor and Francis, 2013-08-24) Bilgili, Uǧur; Sürer, İrfan; Uzun, Pervin; Çalışkan, Necla; Açıkgöz, Esvet; Uludağ Üniversitesi/Ziraat Fakültesi/Tarla Bitkileri Bölümü.; AAH-1539-2021; 6506803244; 52464590800; 50263251200; 57213336818; 6602817346The current study addresses the effects of topdressing composted chicken manure on established turf and comparing the composted chicken manure to a chemical nitrogen (N) fertilizer. Turf color, quality and clipping yields were correlated with N sources and application timing. Monthly fertilization resulted in a more uniform color and turf quality and less clipping yields than did comparable amounts of all N sources applied each as a single application in spring and spring and fall (S + F). The monthly and/or S + F topdressing of chicken manure composts increased the color and quality ratings of the turf mixture during the growing season but did not greatly affect the clipping production.Item Root and shoot response of common vetch (Vicia sativa L.), forage pea (Pisum sativum L.) and canola (Brassica napus L.) to salt stress during early seedling growth stages(Ege Üniversitesi Ziraat Fakültesi, 2011) Bilgili, Uǧur; Budaklı, Emine Çarpıcı; Aşık, Barış Bülent; Çelik, Necmettin; Uludağ Üniversitesi/Ziraat Fakültesi/Tarla Bitkileri Bölümü.; Uludağ Üniversitesi/Ziraat Fakültesi/Toprak Bilimi ve Bitki Besleme Bölümü.; AAH-1513-2021; AAH-1539-2021; 6506803244; 42560925400; 35217629600; 15025896900The objective of the present study was to identify the most salt-tolerant species among common vetch (Vicia saliva cv. Uludag), forage pea (Pisum sativum cv. Kirazli) and canola (Brassica napus cv. Bristol). To this end, the effects of salinity on the seedlings were determined, and four salt concentrations (0, 50, 100 and 150 mM NaCl) were evaluated. Seedlings were exposed to salinity stress for 45 days, and the seedling height, root length, shoot and root dry weight, leaf number per seedling, leaf area per seedling and Na, K and Ca content of the shoots and roots were determined. In addition, the K/Na and Ca/Na ratios were calculated. For all of the species, salt treatments significantly altered several characteristics of the shoots and roots. For instance, the Na content of the roots and shoots increased with an increase in the salt concentration, and the K and Ca content of the roots and shoots decreased. Furthermore, the results indicated that Pisum sativum cv. Kirazli was more resistant to salt stress than the other cultivars and can be cultivated on salty soils containing less than 100 mM NaCl.