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Öğe Application of a new mathematical model for estimating maize yield(Selcuk University Research Center of Applied Mathematics, 2005) Karadavut, Ufuk; Genç, Aşır; Palta, Çetin; Aksoyak, ŞerefThis research was carried out International Agricultural Research Institutes experimental areas in Konya province in the Central Anatolian Region of Turkey. In the research, three corn cultivars (P 3394, DK 585 and NS 640) were tested in randomized complete block design with four replications. The interelation between the productivity of Zea mays and the increasing of its generative organs during the phenological phase tasseling-milky ripeness, as far as the dependence of this relation on some factors influencing crop grow, provide a basis for a quantity analysis left to this work. The potantial yield of the used hybrid was the only parametric index from the stock of the growth limiting factors, which take part in the analysis. Environmental factors, especially sum of effective temperatures, precipitation and nitorgen supply, were strongly effected yield formation. The interrelation between these factors gave us a real possibility to determine the function of the growth and yield.Öğe Application of a new mathematical model for estimating maize yield(2005) Karadavut, Ufuk; Genç, Aşır; Palta, Çetin; Aksoyak, ŞerefThis research was carried out International Agricultural Research Institute’s experimental areas in Konya province in the Central Anatolian Region of Turkey. In the research, three corn cultivars (P 3394, DK 585 and NS 640) were tested in randomized complete block design with four replications. The interelation between the productivity of Zea mays and the increasing of it’s generative organs during the phenological phase ‘tasseling-milky ripeness’, as far as the dependence of this relation on some factors influencing crop grow, provide a basis for a quantity analysis left to this work. The potantial yield of the used hybrid was the only parametric index from the stock of the growth limiting factors, which take part in the analysis. Environmental factors, especially sum of effective temperatures, precipitation and nitorgen supply, were strongly effected yield formation. The interrelation between these factors gave us a real possibility to determine the function of the growth and yieldÖğe Bazı bakla (Vicia faba L.) genotiplerinde tane verimi ve verime etki eden özellikler arasındaki iliskilerin belirlenmesi(2011) Karadavut, Ufuk; Kayıs, Seyit Ali; Keskin, İsmailBu çalısma 4 farklı bakla genotipinin (Eresen-87, 69V1, Etae-77 ve Etae-339) verim ve verime etki eden bazı özelliklerin verim ile olan iliskilerinin ve bu karakterlerin verim üzerine doğrudan ve dolaylı etkilerini belirlemek için yapılmıstır. Çalısmada 69V1, Etae-77 ve Etae-339 genotiplerinde incelenen verime etkili karakterler ile verim arasında önemli bir iliskinin olmadığı görülmüstür (P0.05). Eresen 87 genotipinde ise bitki boyu ile verim arasında istatistik olarak önemli bir iliski bulunduğu tespit edilmistir (P0.01). Ayrıca bitki boyu ile baklada tane ağırlığı ve bitkide bakla ağırlığı ile bitkide tane ağırlığı arasında istatistiksel olarak önemli pozitif korelasyonlar tespit edilmistir (P0.01). Bu genotipte bitki boyu ve bitkide bakla ağırlığı arttıkça bakladaki tane ağırlıkları da artıs göstermistir.Öğe Bazı Kışlık Yulaf Genotiplerinde Tane Veriminin Kararlılık Analizi(Selçuk Üniversitesi Fen-Edebiyat Fakültesi, 2005) Karadavut, Ufuk; Akçura, Mevlüt; Genç, AşırBitki ıslahı çalışmalarının temel amacı yüksek ve kaliteli tohum verimi elde etmektir. Bu amaç için, çeşitlerin mutlaka farklı ekolojik bölgelerde yetiştirilmeleri ve bunların nasıl tepkiler vereceklerinin bilinmesi gereklidir. Kararlılık analizi, çevre şartlarının çeşitler üzerine yaptıkları etkilerin tahmin edilmesidir. Bu çalışmada, kararlılık kavramı, çevre indeksleri ve genotipik varyans, ekovalans, değişim katsayısı ve regresyon katsayısı gibi kararlılık parametreleri açıklanmıştır. Ayrıca konunun daha iyi anlaşılması için yulaf bitkisinde (Secale cerale L.) yapılan bir çalışma örnek olarak verilmiştir.Öğe Determination of Outlier in Live-Weight Performance Data of Japanese Quails (Coturnix coturnix japonica) by Dffits And Cook's Distance(Selçuk Üniversitesi, 2015) Inci, Hakan; Bahadir, Burhan; Karadavut, UfukThe data on live weight performance usually show a normal distribution. On the other hand, the majority of the statistical analysis methods have been developed on the basis of the assumption that the data under consideration are normally distributed. From time to time, in the analysis of the obtained numerical values, one or more observation are found to be quite far away from other observations. Such values are named as extreme value, deviated value, and outlier value. This study has been carried out by using Cook's distance and DFFITS criteria, with intent to determine the outliers of the live weight performance data of the japanese quails, which has been classified according to their sex and have grown until the age of 70 days (10 weeks). In conclusion, it can be said that the DFFITS values are higher than COOK’s distance in male, female, and flock total. DFFITS method is a method that finds more outlier values when compared to COOK’s distance method in terms of finding outlier. DFFITS method should be used if precision is wanted to be enhanced, and COOK’s distance method should be preferred in less precision studies.Öğe The Determination of Stability Some Faba Bean Variety and Lines(Selçuk Üniversitesi, 2013) Karadavut, Ufuk; Sozen, OmerIn this study methods of stability such as genotypic variance, stability variance, ekovalance, coefficient of variation, regression coefficient and deviation from regression were explained. This study was carried out with one variety (Eresen-87), four lines (Etae-339, Etae-77, 69V1 and 69V2) and ten different environments (Two years in Antakya, Serinyol, Kırıkhan, Reyhanlı and Kumlu) in Hatay ecological conditions. According to these results of study, 69V1 and Etae-77 faba bean lines were more stability than others. Because, researched stability methods that values of parameters were less than other genotypes.Öğe Effects of Different Nitrogen Doses on Some Chemical Components of Soybean Cultivars(Selçuk Üniversitesi, 2013) Palta, Çetin; Karadavut, Ufuk; Kavurmacı, Zuhal; Aksoyak, ŞerefThis study was conducted at the Experimental Field of the Bahri Dağdaş International Agricultural Research Institute, in Center of Konya, Turkey, between the years 2003-2004 in order to determine the effects of various nitrogen doses on yield and chemical composition of soybean cultivars. Athow and Defiancy cultivars of soybean were used in this study. 0.0, 2.5, 5.0, 7.5 and 10.0 kg/da nitrogen doses were applied while sowing. The results from both years were evaluated together. According to the results of the research; application of various nitrogen doses on two soybean cultivars resulted in significant differences in seed yield and chemical composition. Oil content decreased with added nitrogen fertilizer. The greatest values of seed yield and chemical composition were generally obtained at a dose of 7.5 kg/da nitrogen. Higher nitrogen doses led to lower values of seed yield and chemical composition. Defiancy cultivar had generally higher seed yield values in all traits and lower starch contents than Athow.Öğe Evaluation of irrigation water quality in groundwater well water in Seyfe Lake Basin(Selçuk Üniversitesi, 2014) Kiymaz, Sultan; Karadavut, UfukGroundwater is a significant water resource widely used for drinking, irrigation, and industrial purposes. Therefore, the determination and evaluation of quality parameters are of great importance for the sustainable use of groundwater resources. This study was conducted to evaluate the irrigation water quality of groundwater wells in the Seyfe Lake Basin and to determine the variation in groundwater quality parameters. Water samples were taken from six groundwater wells during pre-irrigation (June) and post-irrigation (September) periods of the years 2008-2009. Some physicochemical parameters were determined, such as: EC, pH, Na+, K+, Ca+2, Mg+2, Cl-, ,, HNO3, NH3, total salt content, and water hardness. The parameters of sodium adsorption ratio, residual sodium carbonate, and sodium percentage were computed to evaluate water quality. For statistical analysis of the data, the repeated measurements method was employed. Water samples were evaluated according to the criteria of the Water Pollution Control Regulation and the researchers determined that based on the electrical conductivity, total amount of salt, percent sodium, sodium, chloride, and nitrate values of the groundwater well, it cannot be used for irrigation water due to higher than the permissible values of the usable water.Öğe Exponential mathematical model of yield response of common vetch to plant population(Selcuk University Research Center of Applied Mathematics, 2011) Karadavut, UfukYield of field crops are influenced by very different factors. Especially, crop species, soil structure, nutrient substance, availability of water and plant population. In this study, we aimed relation of between biomass yield (g plant-1) and plant population (plants m-2). Common vetch plants were used as material. Common vetch plants were grown in Konya ecological conditions. Data were analyzed with exponential mathematical models. It included two parameters. In this study, solar radiation was measured at different positions in the plant canopy. As results, this study showed no definitive peak in yield with plant population, but generally exhibited asymptotic approach to maximum yield with increased plant population.Öğe Nohut (Cicer arietinum L.) bitkisinde verime etki eden bazı karakterlerin alternatif rekgresyon yöntemleriyle karşılaştırılması(2005) Karadavut, Ufuk; Genç, Aşır; Tozluca, Abdurrahman; Kınacı, İsmail; Aksoyak, Şeref; Palta, Çetin; Pekgör, AhmetRegresyon, bağımlı değişkenler ile bağımsız değişkenler arasındaki ilişkinin matematiksel ifadesidir. Bağımlı değişkenler, bağımsız değişkenlere regresyon fonksiyonu denilen bir fonksiyonla bağlantı içindedirler. Basit regresyon olarak tanımlanan regresyonda biri bağımlı diğeri ise bağımsız olmak üzere iki değişken arasındaki ilişkiler incelenmektedir.Çalışmamızda tane ağırlığına etki eden değişkenler ile tane ağırlığı arasındaki doğrusal ilişkiler incelenmiştir. Denemeler, Bahri Dağdaş Uluslararası Tarımsal Araştırma Enstitüsü deneme alanlarında Damla nohut çeşidi kullanılarak yürütülmüştür. Nohut bitkisinde tane ağırlığına etki eden bitki boyu, dal sayısı, ilk bakla yüksekliği, bakla sayısı, tane sayısı, hasat indeksi ve biyolojik verim gibi karakterler ölçülmüştür. Bu ölçümler şeklinde bir çoklu lineer regresyon modeli olarak ele alınmıştır. Bu modelin parametrelerinin tahmin değerleri En Küçük Kareler Yöntemi'nin yanı sıra bu yönteme alternatif olarak Ridge Regresyon ve M-Regresyon yöntemleri ile hesaplanmış ve sonuçlar karşılaştırılarak en uygun model önerilmiştir.Öğe Parçalı regresyon yardımı ile bitki boyu-zaman ilişkisi parametrelerinin tahmini(2004) Karadavut, Ufuk; Genç, Aşır; Tozluca, Abdurrahman; Sinan, Alper; Karakoca, Aydın; Aksoyak, Şeref; Palta, ÇetinBu çalışma Bahri Dağdaş Uluslararası Tarımsal Araştırma Enstitüsü Deneme alanlarında yürütülmüştür. Çalışmada Dağdaş-94 buğday çeşiti kullanılmıştır. Bitkilerde 10'ar gün aralıklarla düzenli olarak 15 kez boy ölçümleri yapılmıştır. Her parselden 5 bitki tesadüfen alınmış ve üç tekrarlamah olarak yapılan ölçümlerde, her ölçüm için toplam 15 bitki kullanılmıştır. Buğday bitkisinin boyunun zamana göre modellenmesi ve model parametrelerinin tahmini uygulama yönünden önem arzetmektedir. Bu amaçla, doğrusal olmayan bir model gösteren bitkinin boy uzunluğu ile zaman ilişkisi, belli noktalarda zıplamalar gösterirken bazı noktalarda kesilmeler gösterebilmektedir. Bu çalışmamızda buğday bitkisinin boy uzunluğu ve zaman ilişkisi açısından parçalı regresyon modelinin parametre tahmini ve zıplama noktalarının tahmin edilmesi ele alınmıştır.Öğe Relationships Between Chemical Composition and Seed Yield of Some Lentil (Lens Culinaris) Cultivars(Friends Science Publ, 2010) Karadavut, Ufuk; Genç, AşırLentil is one of the major legumes crops in all over the world including Turkey. Lentil may be helpful in meeting the protein need of diet. This study was carried out on Kislik kirmizt 51, Yesil pul 11, Yesil pul 21, Firat 89, Emre 20 and Malazgirt 89 lens cultivars were used as material to find relationships of these varieties with their chemical characteristics. Moisture, dry matter content, ash content, nitrogen content, crude protein, water soluble protein, total carbohydrates, crude fiber and crude fat contents were determined. Principle component analysis was applied on chemical components according to cultivars. Seed yield ranged from 167 kg to 180 kg. The highest seed yield was obtained from Yesil Pull 11 cultivar. The factor 1 (dry matter), factor 2 (moisture), factor 3 (crude protein) affected cumulative variance between 82.7 and 90.5% according to cultivars. There were significant relationships between seed yield and dry matter at all cultivars. Dry matter, moisture and crude protein affected seed yield.Öğe Silajlık ve Danelik Mısırlarda Kuru Madde Birikiminin Bazı Matematiksel Büyüme Modelleri ile Analizi(2010) Karadavut, Ufuk; Genç, Aşır; Tozluca, Abdurrahman; Palta, ÇetinBu araştırma Bahri Dağdaş Uluslararası Tarımsal Araştırma Enstitüsü deneme arazilerinde yürütülmüştür. Çalışmada C 955 silajlık ve DK 585 danelik mısır çeşitleri Richards, Gaussian ve Lojistik büyüme modelleri kullanılarak kuru madde birikimleri tanımlanmaya çalışılmıştır. Modeller karşılaştırılırken belirleme katsayısı (R), Hata Kareler Ortalaması (HKO), Model Etkinliği (ME), Ortalama Oransal Hata (OOH), Ortalama Kareler Varyasyonu (OKV) ve Yanlılık (Bias) değerleri dikkate alınmıştır. Sonuç olarak, Richards modelinin hem silajlık hem de danelik mısırın kuru madde birikimini en iyi tanımladığı görülürken, lojistik modelin en az tanımlayan model olduğu görülmüştür.Öğe Silajlık ve Danelik Mısırlarda Kuru Madde Birikiminin Bazı Matematiksel Büyüme Modelleri ile Analizi(Ankara Univ, Fac Agr, 2010) Karadavut, Ufuk; Genç, Aşır; Tozluca, Abdurrahman; Palta, ÇetinThis study was carried out at Bahri Dagdas International Agricultural Research Institute's experimental areas. C 955 and DK 585 were used as material. Richards, Gaussian and Logistic growth models were used for describing plants growth. Coefficient of determination (R-2), mean squared error (MSE), model efficiency (ME), mean rational error (MRE), mean squared variation (MSV) and Bias were used as comparison criteria. As results, Richards model described dry matter accumulation of silage and seeds corns better than Gaussian and Logistic growth models. Logistic growth equation described dry matter accumulation of silage and seeds corns worse than others growth.Öğe Statistical Evaluation of Chemical Components Acording to Some Chickpea (Cicer arietinum L.) Cultivars(Selçuk Üniversitesi, 2012) Karadavut, Ufuk; Genç, AşırThis study was carried out during 2004-2005 growing seasons at Yozgat ecological conditions. Canitez-87, Eser-87, Akçin-91, ILC-482, Damla and Gökçe chickpea cultivars were used as material. The experimental design was a randomized complete block with four replications. Moisture, dry matter content, ash content, nitrogen content, crude protein, water soluble protein, total carbohydrates, crude fibre and crude fat contents were determined. The results were presented standard deviation of four replications. There were significantly relation between seed yield and dry matter at all cultivars, except Damla cultivar. Otherwise, Principle component analysis was applied on chemical components according to cultivars. We seen factor 1 (dry matter), factor 2 (moisture), factor 3 (crude protein) and total nitrogen (f actor 4- only Gökçe cultivar) was explained cumulative variance between 82.7 and 90.5% according to cultivars.
