Utilization of Power Analysis in Horticulture

The aim of this study was to determine associations and the values of power analysis as their reliability degrees between Year or Cultivars and traits such as fruit weight (FW), total acid (TA) and, the soluble substance that can be dissolved in water (SSDW) from various ten raspberry cultivars in an adaptation study regarding horticulture field by using Chi-Square and Likelihood Ratio Chi-Square statistics after FW, TA and SSDW were categorized as binary (low and high). Association between FW and CULTIVAR, association between SSDW and YEAR, association between SSDW and CULTIVAR, association between TA and CULTIVAR were much more significant (P<0.001). Besides, corresponding power values for Chi-Square and Likelihood Ratio Chi-Square statistics were very close on each other and had a reliability of approximately 100% and enough sample size. Contrary to these four contingency tables, associations between both FW-YEAR and TA-YEAR were non-significant and non-reliable because corresponding power values for Chi-Square and Likelihood Ratio Chi-Square statistic were 50-51% (a power of moderate-level) and 22-23% (power of low level), respectively and sufficient sample sizes for both FW-YEAR and TA-YEAR should be 240 and 560, respectively in order to provide a power of 80%. As a result, in order to be obtained reliable results and determined enough sample size in Chi-Square and Likelihood Ratio Chi-Square Statistics, power analysis should be performed

Examination of Transformationist Leadership in Turkish Army

The aim of this study is to examine “Transformational leadership” conception with respect to qualifications and opinions of military officers and military administrators working at military base and organization by means of Factor Analysis. The study contained the military officers working at military base and organization in cities of Van, Hakkari, Bitlis, Siirt, Ağrı, and Muşin East Anatolian. The sampling regarding study material was comprised of 70 military officers (5 femaleand 65 male) and administratorswere at random selected. Data were collected from those people by Questionnaire as to Scale of Podsakoff’s Transformational Leadership containing 37 items. For Transformationist Leadership, Statisticalanalysis for data was performed by Factor Analysis after designing 6 artificial variables from 37 items: i-Providing vision and inspiration, ii-Forming conduct models, iii-Commitment to group goals, iv-Providing individual support, v- Intellectual stimulation, vi-Intellectual stimulation. Artificial 6 variables were separated into Factor 1 and Factor 2. While Factor 1 consists of Providing vision and inspiration; Formingconduct models; Commitment to group goals and Intellectual stimulation, Factor 2 consists of Providing individual support; Intellectual stimulation. A variance (eigenvalue) of 2.523 for the first factor which explains %42.1 of total variation, while second factor’s eigenvalue,1.697. The second factor explains %28.2 of the total variation. These two factors together explain %70.3 of the total variation. Besides, RMSR value calculated for this study is small enough (0.094), it is possible to conclude that sufficient factor analyses have been made. As a result, it can be suggest that transformational leadership based on educatio

Using of Logistic Regression in Animal Science

This study was carried out to examine the effects of environmental factors on different growth with Chi-square, G-test and logistic regression analysis after body weights of these growth periods were categorized as binary. Besides, logistic regression was also based on concordant statistics except Chi-square and G-tests as model fit criteria. With respect to three fit criteria, the relationships among categorized birth weight with categorized body weights in 45th, 60th and 75th days were significant (p<0.01). Moreover, the relationship between periods of the lambs born in early March of 2001 year by using logistic regression. The relationships between categorized body weights and categorized birth weight and/or environmental factors were analyzed sex and only categorized body weight in 75th day was significant (p<0.05). It could be said that birth weight, one of environmental factors, improved model fit more than the other factors when considered all model fit criteria in logistic regression.As a result, it can be suggested that in addition to Chi-square and G-tests used for providing relationship between two traits, logistic regression in terms of obtaining from different information will be an alternative analysis in place of variance analysis

Effect of Mepiquat Chloride a Growth Retardant on Seed Yield Components in Common Vetch Vicia sativa

The common vetch (Vicia sativa L.) produces weak stems and shoots which make them susceptible to lodging when grown for seed production. Excessive vegetative growth and lodging of common vetch grown for seed interferes high seed production and easy harvest. The closed canopy reduces sunlight penetration, increases relative humidity, and the results can reduce the efficiency of photosynthesis. Plantgrowth retardants have been used successfully to reduce lodging and increase seed yield of many crops. They when are applied at proper rates, seed yield and yield components can increase, otherwise the benefits of the growth regulators cannot occur (Virgona 1997, Young et a!. 1999, Biles and Cothren 200 1). Since infonnation is not available on effect of growth retardants on seed yield of common vetch, this experiment was conducted to evaluate effects of mepiquat chloride as a plant growth retardant on seed yield and yield components of common vetch

Slope and phosphogypsum's effects on seal and crust formation and infiltration rate

In this study, slope and phosphogypsum's (PG) effects on seal and crust formation and infiltration rate (IR) have been investigated. Clayey soil of Samsun (Typic Udorhent) and silty loam soil of Ankara (Typic Calciorthid) were used. Using a rainfall simulator, control and PG (at a rate of 5 and 10 t.ha-1) applied soils samples that have six different slopes angles (0, 2, 6, 15, 24 and 30 %) were subjected to two simulated rainfalls with an intensity of 45 mm for 60 minutes leaving seven days dry interval between two treatments. As a result of this study, it was found that in the PG-treated soils samples seal and crust formation were thinner and later than the control samples, and the increases of the infiltration rate were significant as statistically at level P?0.01

Atatürk Tarım İşletmesi (Yalova) arazileri erozyon etüdü

Atatürk Tarım İşletmesi (Yalova) topraklarının çeşitli özelliklerinden yararlanılarak, her bir toprak serisinin erozyon duyarlılığı faktörleri bulunmuş, mevcut erozyon tipi ve yayılımı belirlenmiş, işletme arazisinin eğim haritası çıkarılmış ve kesme dayanıklılığı testleri ile eğimli arazilerdeki kayma riski belirlenmiştir. Bu verilerden yararlanılarak arazideki erozyon yerlerini, tipini ve erozyon ile ilgili diğer görünümleri gösteren erozyon haritası hazırlanmıştır. İşletme arazilerindeki mevcut 6 toprak serisine ait yüzey toprak örnekleri üzerinde yapılan fiziksel analizler sonucunda yüzey toprak tekstürü; killi, killi tınlı, tınlı olarak belirlenmiştir. Yüzey toprakları, organik madde yönünden orta zengin ve hidrolik geçirgenlikleriorta yavaş ile orta hızlı arasında, agregat stabilitesi olarak hem zayıf hem de dirençli toprakları içermektedir. İnfiltrasyon kapasitesi yönünden orta yavaş ve orta infiltrasyon değerlerine sahip işletme arazilerinin, kayma riski bulunan ve fazla eğime sahip toprak serilerinde yapılan kesme dayanıklılığı ölçümlerine göre bu topraklarda kayma riskinin yüksek olduğu tespit edilmiştir

Üniversal toprak kayıpları eşitliğinin (USLE) Atatürk Tarım İşletmeleri eğimli arazilerinde uygulanması

Atatürk Tarım İşletme Müdürlüğü (Yalova) için hazırlanmış eğim haritasından yararlanılarak, eğimi %2’den fazla olan 13 adet parsel belirlenmiştir. Bu parseller için Üniversal Toprak Kayıpları Tahmini Denklemi (USLE) çözümü yapılarak tahmini toprak kayıplarını hesaplamak için önce R, K, LS değerleri bulunmuştur. Arazide; hiç bir bitki örtüsü olmadığı durumda, bitki örtüsünün olduğu fakat koruma önlemlerinin olmadığı durumda, hem bitki örtüsünün hem de koruma önlemlerinin olduğu durumda tahmini toprak kayıpları hesaplanmıştır. Sonuçlar, toprak kaybı tolerans değerleri ile karşılaştırılmış ve tahmini toprak kayıpları fazla olan parsellere ait toprak kaybı değerlerini tolerans değerleri seviyesine düşürmek için; şeritvari ekim, teraslama, münavebe ve yüzey örtüsünün kuvvetlendirilmesi gibi koruma önlemleri önerilmiştir