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Kiraz ve Kayısı Ağacı Reçinelerinden Elde Edilen Yenilebilir Filmlerin Çilek (Fragaria ananassa) ve Yenidünya (Eriobotrya japonica) Meyvelerinin Kaplanmasında Kullanımları Texto completo
2018
Sema Özmert Ergin | Hilmi Yaman | Meltem Dilek
Bu çalışmada kiraz ve kayısı ağaçlarından sızan reçineler yenilebilir kaplama materyali olarak kullanıldı. Reçinelerin yenilebilir kaplama olarak uygun olup olmadıkları bazı kimyasal özellikleriyle incelendi. Karbon, hidrojen, azot ve kükürt yüzdeleri elementel analiz ile belirlendi. Yapılan analizler sonucunda her iki reçinenin de fenolik madde bakımından zengin olduğu bulundu ve antioksidan kapasitelerinin yüksek olduğu tespit edildi. Termal analizlerle reçinelerden elde edilen filmlerin ısıya karşı davranışları ve ağırlık kayıpları belirlendi. Bu analizlere göre, filmlerin 400°C’ye kadar ısıya dayanıklı oldukları bulundu. Filmlerin SEM ile elde edilen yüzey görüntülerinin homojen ve düzgün bir yapıda oldukları görüldü. Daha sonra, reçinelerden elde edilen film çözeltileriyle çilek ve yenidünya meyveleri kaplandı. 4±1°C’de buzdolabında muhafaza edilen kaplamalı/kaplamasız meyveler; raf ömrü, organoleptik ve mikrobiyolojik özellikler bakımından karşılaştırıldı. Filmlerin kaplanmış meyvelerin raf ömrünü uzattığı görüldü. Depolama sonunda kaplamasız örneklerin toplam bakteri, maya-küf ve koliform bakteri düzeyleri en yüksek seviyedeydi. Ayrıca, kaplamalar meyvelerin organoleptik özelliklerini olumlu etkiledi. Duyusal analiz testine göre kaplamalı meyveler, kaplamasız meyvelerden daha yüksek puanlara sahip oldular. Kiraz ve kayısı ağacı reçineleri yenilebilir kaplama olarak kullanıma uygun materyallerdir.
Mostrar más [+] Menos [-]Analysis of Consumer’s WTP for Cowpea Varieties in Osun State, Nigeria: the Hedonic Pricing Approach Texto completo
2018
Rabirou Kassali | Abayomi Yusuf Oyewale | Olufemi Adedotun Yesufu
Analysis of Consumer’s WTP for Cowpea Varieties in Osun State, Nigeria: the Hedonic Pricing Approach Texto completo
2018
Rabirou Kassali | Abayomi Yusuf Oyewale | Olufemi Adedotun Yesufu
Analysis of consumer preferences for cowpea varieties in Osun State was carried out with a view to identifying attributes that determine price variation among cowpea varieties and the effect on consumer’s willingness to pay for those varieties. A multistage sampling technique was used to randomly select 240 respondents for the study, comprising 180 cowpea consumers and 60 retailers. Primary data were collected on cowpea varieties, their attributes and the consumer’s willingness to pay for cowpea varieties using well structured questionnaire. Data collected were analysed using both descriptive and inferential statistics. The results showed that out of thirteen varieties found in the area, only nine varieties of cowpea were common in the market. The quality of each variety differs which explained variation in their price. In terms of preference the Oloyin variety is preferred most by 78% of consumers. Weevil resistance had the highest rank among the cowpea attributes. Oloyin had the highest WTP followed by Milk and Drum with ₦303, ₦237 and ₦213 per kg, respectively. Hedonic pricing methods provide a statistical estimate of premiums and discounts for cowpea attributes. Results indicated that weevil resistance was the most important attribute to consumer. Cowpeas with weevil damage tolerance, brown colour, large grain size and short cooking time commanded price premium for almost all the varieties. The consumer discounted prices for insect damage, small size, white colour, smooth skin and grain colour mixed together. The study concludes on the need for breeders and research institutes to incorporate these cowpea attributes that attracted price premium into their cowpea breeding programmes.
Mostrar más [+] Menos [-]Un método para evaluar la aptitud de las tierras con fines de riego y drenaje Texto completo
1990
Arevalo V., Gloria | Botero, Pedro J.
A land capability classification method for irrigated and drained lands was outlined in order to build up management alternatives. This methodology suggests the grouping of soils in Land Management Units (LMU) as cartographical and ecological units similar in its management needs. These units are those evaluated with respect to Irrigation Management Types (ITM) taking account of land qualities which relate to soil physical and chemical characteristics and the irrigation management requirements. The enclosure of land conditions and its irrigation management requirement defines the land capability class. Lands with the best land capability for irrigation are afterwards reevaluated from the crop production stand point, leading to a new group named Land Use Type. This methodology allows to choose several alternatives for the proper land use under irrigation practices without damaging soil and water resources. | Se planteó una metodología para clasificar la aptitud de las tierras para uso bajo riego y drenaje como base para crear alternativas de manejo. La metodología propone agrupar los suelos en Unidades de Manejo de tierras(UMAT) como unidades cartográficas y ecológicas similares en cuanto a necesidad de manejo. Son éstas las que se evalúan con respecto a unos Tipos de Manejo bajo Riego (TMR) a través de cualidades de la tierra. Cada cualidad incluye características del suelo y requerimiento de manejo de riego. El acercamiento entre las condiciones de la tierra y los requerimientos de manejo del riego definen la clase de aptitud. Sobre las tierras con mejor aptitud para determinado método de riego se reevalúa en cuanto a su aptitud para la producción de cultivos denominado Tipo de Uso de la Tierra (TUT). Se pueden establecer alternativas de manejo y mejoramiento para encontrar la aptitud potencial.
Mostrar más [+] Menos [-]Low Cost Provides of the Energy Needs of Plateau Houses by Using Photovoltaic Systems Texto completo
2018
Hilmi Zenk
Renewable energy interest is increasing day by day due to the progressive decline of fossil fuels and negative effects on the environment. As is known, generating energy using solar energy is the most popular of renewable energy source applications. One of the reasons for this is that the sun, which is the source of all the energy in the world, will give energy for a very long time. Another important reason is the rapid developments in semiconductor electronics technology. Direct solar water heating with solar collector, power generation without photovoltaic panels, and even power generation with concentrated parabolic systems. In this research, electricity is generated by solar panels used in a traditional plateau house, photovoltaic solar batteries from solar energy and electricity stored in battery benches and electricity stored in the battery is converted to mains electricity through an inverter if necessary. Saving electric elements at home are selected, and the minimum power required for basic needs is provided. In addition, the economics of the designed system was investigated and efficiency analysis was carried out considering the energy efficiency at the optimum level.
Mostrar más [+] Menos [-]Farklı Enerji Kaynaklarında Geliştirilen Bazı Bacillus Suşları Tarafından Üretilen Sekonder Metabolitlerin Antimikrobiyal Etkisi Texto completo
2018
Ferit Can Yazdıç | Altuğ Karaman | Fadime Yazdıç
Bu çalışmada, Kahramanmaraş’taki tarım arazilerinde bulunan Bacillus sp. izolatlarının antimikrobiyal aktivite özelliklerinin belirlenmesi amaçlanmıştır. Toplanan tarım arazisi toprak örneklerinden Bacillus izolasyonu yapılmıştır. Bu izolatlar morfolojik ve biyokimyasal olarak tanımlanmıştır. Farklı karbon kaynaklarındaki (glukoz, fruktoz ve sakkaroz) Bacillus izolatlarının ve referans Bacillus türlerinin bazı bakterilere ve patojenik mayaya (Candida albicans) karşı antimikrobiyal aktiviteleri disk difüzyon yöntemine göre araştırılmıştır. Araştırma sonucunda, çalışmada kullanılan Bacillus izolatlarının sekonder metabolitleri test edilen mikroorganizmaların gelişmelerini değişik oranlarda engellemiştir (1-25,2 mm inhibisyon zonu). Üç izolat (Bacillus sp. B6, B13 ve B43) yüksek antibakteriyel aktivite göstermiştir. Bacillus sp. B6, Bacillus sp. B13 ve Bacillus sp. B43’ün, kullanılan tüm karbon kaynaklarında Candida albicans’a karşı (Bacillus sp. B6-sakkaroz hariç) antifungal sekonder metabolitleri ürettiği belirlenmiştir. Daha da önemlisi karbon kaynağı olarak fruktoz kullanıldığında Bacillus sp. B13 (1-11,67 mm inhibisyon zonu) ve Bacillus sp. B43’ün (1,4-19 mm inhibisyon zonu) tüm patojen mikroorganizmalara karşı antibakteriyel ve antifungal etkisinin olduğu tespit edilmiştir.
Mostrar más [+] Menos [-]Determination of Listeria monocytogenes and Serotypes in Modified Atmosphere Packed Ground and Cubed Beef Samples Texto completo
2018
Adem Özkiraz | Ali Gücükoğlu
This study was conducted to determine the Listeria monocytogenes’s presence, serotypes and resistance against various antibiotics in modified atmosphere packaged (MAP) ground and cubed beef samples. Five of ground (5/50-10%) and 3 of cubed beef samples (3/50-6%) were identified as L. monocytogenes positive in MAP samples. Eleven L. monocytogenes isolates that obtained from samples being investigated in term of hlyA gene by PCR method have verified that this gene (100%). In serotyping results, 3 of 8 isolate that obtained from MAP ground beef samples were 1/2a, the other 3 isolate was 1/2b and the remaining 2 isolate was 4b. Also, 1 of 3 isolate that obtained from MAP cubed beef samples were 1/2b, the other one isolate was 1/2c and the last one was 4b. One isolate against (9%) ampicillin, 2 isolate against (18.2%) chloramphenicol, 3 isolate against (27.2%) erythromycin, 4 isolate against (36.3%) oxytetracycline and 4 isolate against (36.3%) penicillin G, 6 isolate against (54.5%) tetracycline and 3 isolate against (27.2%) vancomycin was resistant in 11 L. monocytogenes isolates that confirmed by PCR. The L. monocytogenes isolates were found to be resistant to one or more antibiotics in antibiotic-resistance test results. In conclusion, applying of national residue monitoring program by official authority for prevention of intensive antibiotic use in order to prevent the development of resistant strains to antibiotics has great importance.
Mostrar más [+] Menos [-]The Determination of Their Efficiency Against Fusarium Root and Crown Rot Diseases of Some Antagonistic Trichoderma and Endophytic Acremonium Isolates Texto completo
2018
Berna Tunalı | Cansu Tosun | Büşra Müge Maldar | Gonca Meyva | Bayram Kansu
The Determination of Their Efficiency Against Fusarium Root and Crown Rot Diseases of Some Antagonistic Trichoderma and Endophytic Acremonium Isolates Texto completo
2018
Berna Tunalı | Cansu Tosun | Büşra Müge Maldar | Gonca Meyva | Bayram Kansu
The use of antagonist microorganisms against pathogenic organisms in organic agricultural systems was promising for biological control approach. The aim of this study was to determination of the potential biological control of some fungal isolates which characterized as endophytic and antagonistic against soil borne Fusarium culmorum (FC) and F. oxysporum f.sp. radicis lycopersici (FORL) pathogens. For this, seven isolates of endophytic Acremonium spp. that isolated from healthy wheat plants and eight isolates of antagonist Trichoderma spp., isolated from soil of organic vegetable areas, were performed as biological control agents (BCA). The agar media with hypha and mycelia of the BCAs and spore suspensions (106 spores/ml) of FC and FORL were treated for inoculation of wheat seeds and tomato seedlings. The harvested plants were statistically analyzed by some parameters (severity of crown rot disease (%DS and scale), plant lengths (cm) etc.). In conclusion, the Acremonium isolates (47.5%) were lower means of disease severity than Trichoderma isolates (74.6%) for FC and FORL assessments in wheat experiment. In tomato, the averages of disease severity between Acremonium and Trichoderma were similar while their means were lower than positive control (The Scale of DS=0.67
Mostrar más [+] Menos [-]Performance of bean (Phaseolus vulgaris L.) genotypes in the second-season under high and low technology management in Parana, Brazil | Desempenho de genótipos de feijão (Phaseolus vulgaris L.) na safrinha em alto e baixo manejo tecnológico Texto completo
2017
Brusamarello, Antonio Pedro | Oliveira, Paulo Henrique | Sebim, Danilo Eduardo | Baretta, Douglas Rodrigo
In the face of bean (Phaseolus vulgaris L.) crops with low grain yield in Brazil, specifically in the state of Parana-Brazil, this research aimed to evaluate the agronomical performance of different genotypes grown in the second-season under high and low technology management. The experimental design was a randomized block design with three replications in a 3x13x2 triple factorial arrangement, where Factor A was composed of three years of cultivation (second-season 12/13, 13/14 and 14/15), Factor B consisted of 13 bean cultivars (BRS Campeiro; BRS Esplendor; IPR Gralha; IPR Tuiuiú; IPR Uirapuru; BRS Ametista; BRS Estilo; BRS Notável; BRS Pérola; IPR 81; IPR Campos Gerais; IPR Curió and IPR Tangará) and Factor C consisted of 2 levels of technological management (high and low technology). The use of high-technology management resulted in higher grain yield, statistically different from the low-technology management in the second-season 12/13, 13/14 and 14/15 and from the overall mean of the three years of cultivation. Thus, greater investment in technology increases the probability of increasing in economic profitability of the producer due to the growth in bean crop productivity. The cultivar BRS Pérola exhibited grain yield values statistically higher than cultivars IPR Tuiuiú, IPR Gralha, IPR Campos Gerais, IPR Tangará, IPR Uirapuru, IPR 81 and IPR Curió, proving to be a good choice to achieve high productivity. | Diante das baixas produtividades de grãos da cultura do feijão no Brasil e no estado do Paraná, objetivou-se neste trabalho avaliar o desempenho agronômico de diferentes genótipos de feijão cultivados na safrinha em alto e baixo manejo tecnológico. O delineamento experimental foi em blocos ao acaso com três repetições em esquema fatorial triplo do tipo 3x13x2, em que o Fator A foi constituído por 3 anos de cultivo (safrinha 12/13; 13/14 e 14/15), o Fator B composto por 13 cultivares de feijão (BRS Campeiro; BRS Esplendor; IPR Gralha; IPR Tuiuiú; IPR Uirapuru; BRS Ametista; BRS Estilo; BRS Notável; BRS Pérola; IPR 81; IPR Campos Gerais; IPR Curió e IPR Tangará) e o Fator C constituído por 2 níveis de manejo tecnológico (alta e baixa tecnologia). O manejo de alta tecnologia resultou em produtividade de grãos superior e estatisticamente diferente do manejo de baixa tecnologia na safrinha 12/13, 13/14 e 14/15 e na média geral dos três anos de cultivo. A produtividade de grãos na safrinha 14/15 foi superior e estatisticamente diferente da safrinha 12/13 e 13/14 em ambos os manejos e na média de cada ano. A cultivar BRS Pérola apresentou produtividade de grãos superior estatisticamente das cultivares IPR Tuiuiú, IPR Gralha, IPR Campos Gerais, IPR Tangará, IPR Uirapuru, IPR 81 e IPR Curió. Entre as cultivares avaliadas a IPR Curió apresentou a menor produtividade de grãos.
Mostrar más [+] Menos [-]Use of Non-Parametric Approaches on Normality of Hydrologic Variables Texto completo
2018
Kadri Yürekli | Müberra Erdoğan | Mehmet Murat Cömert
Parametric approaches in statistical analysis assume that any given data are normally distributed. Therefore, the test of whether this conventional assumption is valid should be made in this context of the available data’s normality before being passed to the application of statistical tests. The paper is focused on the normality methodologies commonly used in literature, named Kolmogorov-Smirnov, Jarque-Bera, D’agostino, Anderson Darling, Shapiro-Wilk and Ryan Joiner. In the study, the seasonal maximum data from eight streamflow gauging stations in Yesilirmak Basin was used as material. The normality in the 59% of the whole data sets were obtained as the highest result by the Kolmogorov –Smirnov approach, when compared to the other normality tests considered in the study.
Mostrar más [+] Menos [-]Ayçiçeği Bitki Artıklarının Organik Tarım Amaçlı Değerlendirilmesi Texto completo
2018
Volkan Gül | Erdoğan Öztürk | Murat Sezek
İnsan beslenmesinde önemli bir yere sahip olan tarımsal ürünlerin yetiştiriciliğinde kullanılan hormon, ilaç, gübre gibi kimyasal girdiler sağlığı olumsuz yönde etkilemektedir. Bu nedenle günümüzde, toprağa ve bitkiye zarar veren kimyasal maddeler yerine bitkilerin ihtiyacı olan ve insan sağlığını olumsuz yönde etkilemeyen organik gübre ve doğal ilaçlama yöntemleri geliştirilmeye çalışılmaktadır. Organik tarım, insanların sağlıklı beslenmesinin yanı sıra toprak verimliliğini artıracak her türlü organik artıkların değerlendirilmesi ve tarımda devamlılığın sağlanması açısından büyük önem arz etmektedir. Özellikle ayçiçeği bitkisinin tüm kısımlarında %63,9 potasyum (K2O), %21,7 azot (N) ve %14,4 fosfor (P2O5) besin elementleri bulunduğundan, ayçiçeği yetiştiriciliği yapılan yerlerde hasat sonrası arazide kalan belirli miktarda sap ve köklerin toprağa karıştırılarak yeşil gübre olarak kullanılması pratikte uygulanabilecek en önemli yöntemlerden biridir. Ayrıca hasat sonrası geriye kalan sap, tabla gibi kısımlar, yakacak olarak değerlendirilirken, yanma sonucu elde edilen ve yüksek oranda potasyum bulunan külleri tarlaya serpilerek organik gübre olarak da değerlendirilebilmektedir. Bu derlemede; özellikle ülkemizde organik madde yönünden fakir olan araziler için bir kenara atılarak heba edilen ve çevre kirliliğine neden olan ayçiçeği hasat artıklarının organik hammadde olarak kullanılması, organik ürün elde edilmesi yönünde çiftçilerin bilinçlendirilmesi ve bu şekilde ülke ekonomisine sağlayabileceği konular ele alınmıştır.
Mostrar más [+] Menos [-]Organic Milk Versus Conventional Milk As Functional Milk Texto completo
2018
Zehra Selcuk | Habip Muruz
Chronic diseases progress slowly and generally cause symptoms in middle age onward. It is widely known that there is a close link between diets and chronic diseases in human. Foods which have specific target functions and preventive impacts on human health as well as their basic nutritional effects are defined as functional foods. These foods may decrease risk for chronic diseases due to having health preventive impacts on human health. Milk is an useful baverage for during childhood and adolescence because of its macro and micro nutrients. Milk composition is affected by mainly genetic, nutrition, season, lactation stage etc. Therefore, there are some differences in milk components between organic and conventional milk because of especially heredities of herds and nutrition. Seasonal variations in pasture, amount of grains and forages (fresh or conserved) cause changes in milk fatty acid composition of organic and conventional milk. Furthermore, organic production regulations limit the use of starch-based concentrates and supplements; therefore, some nutrients’ concentrations (protein, thiamine, vitamin B1 and B2, I etc) in organic milk may be expected to be lower than those of conventional milk. In this paper, organic and conventional milk components have been reviewed in term of functional milk.
Mostrar más [+] Menos [-]The Socio-Economic Structure of Farmers Related to Organic Olive Cultivation and The Knowledge Level and Approaches Towards Organic Agriculture Texto completo
2018
Damla Özsayın | Sibel Tan | Bengü Everest
In this study, it was aimed to examine of socio-economic structure of farmers related to organic olive cultivation activity in Gökçeada district of Çanakkale province in Turkey and to determine the knowledge level and approaches towards their organic agriculture. The data of the present study were obtained by survey from 121 farms related to organic olive cultivation determined by using the whole counting method. Data cover the production period in 2016-2017. Descriptive statistics and 5-point Likert-type scale was used to analyse the data. According to the results of study, it was found that the average age of farmers was 53.6 years, the average year of schooling of farmers was 7.5, the average household size was 3.7 persons, the average experience of farmers in organic olive cultivation was also 8.3 years and 10.7% of the farmers had the highest income (50.001₺-60.000₺). Furthermore, the most consciousness level about organic agriculture was determined as ''not use hazardous chemicals for nature and health in organic agriculture'' concept for farmers that make organic olive cultivation. As a result, this study is expected to contribute the development of district's economy and to rural development.
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