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Use of Monoterpenes in the Control of Bark Beetles (Coleoptera: Curculionidae, Scolytinae) in Forest Areas
2020
Gülsevim Tiring | Serdar Satar | Okan Özkaya
Bark beetles (Coleoptera: Curculionidae) are among the important pests of forest in the world and in Turkey. Pine-feeding bark beetles interact chemically with their host tree via the behavioral, physiological, and biochemical effects of one class of monoterpenes. The half of oleoresin producing by trees such as pines, spruces, firs in the forests is the monoterpene. The monoterpenes occur in the oleoresin and function as behaviorally active kairomones for pine bark beetles and their predators, presenting a classic example of tritrophic chemical communication. The monoterpenes are aggregation pheromones for pine bark beetle. In the control of bark beetles, monoterpenes are used in traps. For example, the monoterpenes are an attractant for bark beetles. Also, Myrcene is used for a synergistic effect in the trap. Monoterpenes can toxic to insects. Limonene is among the most toxic monoterpenes to bark beetles. Also, the interaction is found between monoterpenes and prey of bark beetle. Monoterpenes are enhanced to respond of predatory to the pheromone of bark beetle.
Show more [+] Less [-]Survival of Foodborne Pathogens in Homemade Fig and Mulberry Vinegars
2020
İlkin Şengün | Gülden Kılıç
This work reports the survival status of Listeria monocytogenes, Escherichia coli O157:H7, Staphylococcus aureus and Salmonella Typhimurium in homemade fig and mulberry vinegar. Each pathogen was separately inoculated in vinegar samples at approximately 7 log CFU/mL. The survival status of pathogens was examined at 20°C for 0, 15, 30 and 60 min, and 4, 8 and 24 h. The residual populations after 24 h were below detection limit for all species assayed. S. Typhimurium was much more sensitive to mulberry vinegar ( 6 log reduction in 30 min) than it is to fig vinegar ( 6 log reduction in 24 h). L. monocytogenes had an overall quite different behaviour, being the most sensitive species to fig vinegar ( 6 log reduction in 4 h) while being the most resistant one to mulberry vinegar ( 6 log reduction in 24 h). The total phenolic content of fig vinegar (767 mg GAE/L) was higher than mulberry vinegar (557.5 mg GAE/L). The results exhibited that antimicrobial activity of vinegar is mainly related to the contact time, test pathogen and physicochemical properties of vinegar.
Show more [+] Less [-]Oxidative stability of soybean oil enriched with ethyl acetate extract of olive by-products
2020
Semra Turan | Deniz Günal Köroğlu
In this study, oxidative stability of soybean oil (SBO) enriched with ethyl ecetate extracts of olive by-products was investigated. Total phenolic contents, phenolic profiles and antioxidant activities of olive wastewater (OMWW) and olive pomace (OP) extracts were also determined. Total phenolic contents of extracts obtained from OMWW and OP were 134.45 and 281.43 mg gallic acid equivalent (GAE)/g extract, respectively. While antioxidant activities of OMWW extracts in the linoleic acid emulsion were in the range of 85.79 % and 88.54 %, OP extracts had 83.30 % and 90.09 % at different concentrations (0.5, 1, 2 ve 3 mg/mL) after incubation at 37 °C. β-carotene bleaching activities of the extracts at 50 °C were found as 26.80-66.63% in OMWW extracts and 18.76-53.32% in OP extracts, respectively. 2,2′-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activities of OP extracts were higher than those of OMWW extracts and ranged from 30.6% to 87.7% in OP extracts and 16.6% to 54.1% in OMWW extracts at these concentrations. Both the antioxidant and antiradical activities of extracts significantly increased with increased concentration (p
Show more [+] Less [-]A Research on Farmer Behaviours and Change of Information Resources in a Last 30 Year Period
2020
Özdal Köksal
In this study, the change of farmer behaviour, which is thought to change slowly, over a 30 period, was evaluated in terms of information sources. In the study, the change in farmer attitudes with a longitudinal approach was designed in a process, and the data obtained from the same farmers and the same questionnaire forms were changed over time. A survey conducted in 1989 was repeated in the same region, in the same survey forms and in the same sample group (66 farmers) in 2019. In the analysis phase of the data obtained from the surveys, Multiple Compliance Analysis Technique was used. In the Polatlı District of Ankara Province, the long-term approach of 66 farmers, especially the changes in information sources and the non-logging habits of their businesses, has been determined with a longitudinal approach. The research results revealed that urban people have become close to rural areas and agriculture, and that their farmers have become close to district and provincial centres. As in all economic activities, research results support that the same jobs in agriculture for the long time do not have the opportunity to do the same and to be content with the knowledge left from the ancestor. This result is the most concrete indication that knowledge-based agriculture has become inevitable in every respect.
Show more [+] Less [-]The Importance of Organic Agriculture and Şanlıurfa Farmers’ Perspectives on Organic Products
2020
Ayşe Çalık
Sustainable agriculture can be defined as the creation of an agricultural structure using agricultural technologies that do not harm the environment in addition to the protection of Natural Resources in the long term. In Turkey, as in the developed countries of the world, intensive (traditional or intensive) agricultural production is used without considering the negative consequences of processing techniques and technologies while using synthetic production inputs without supervision. Today, these applications have started to attract as much attention as waste industry or urban pollution with their effects on the determination of natural balance and the ability to create life hazard that can reach all living beings as well as human beings through the food chain. Therefore, organic farming techniques that meet quality, health and environmental standards play a key role by avoiding the use of unnatural inputs such as pharmaceuticals, synthetic fertilizers. Organic agriculture, which is important for the reflection of sustainable agriculture in practice, has started to be seen as a necessity, especially with the development of environmental awareness in recent years. In this study, it is aimed to explain the basic principles of organic agriculture, which we believe are necessary for sustainable agriculture in the 8 villages, namely Umut, Günbalı, Yenisu, Mehmetçik, Güçlü, Akpınar, Güzel, Anaz and 3 towns (Kısas, Konuklu and Çamlıdere) in Şanlıurfa. According to the results of the survey, almost 30% of farmers were found to grow organic products. At the time of purchase, they answered the question of which products do you pay attention to organic, and more than half (54.8%) of the surveyed farmers responded that they pay attention to food. 45.18% of the surveyed farmers stated that they did not pay attention to anything in shopping.
Show more [+] Less [-]Determination of Operating Characteristics of 540 and 540E PTO Applications in Disc Type Silage Machines
2020
Osman Özbek | Mustafa Ahmed Jalal Al-Sammarraie
In this study, performance characteristics such as power take off (PTO) power consumption, fuel consumption, fuel consumption for the unit field-unit product were determined at different working speeds with two different PTO applications (540 and 540E) in a single row disc type silage machine. In particular, the 540E PTO application greatly reduces fuel consumption for unit work. The best results in terms of hourly fuel consumption were achieved in 540E PTO application and V1 working speed. When the field - product fuel consumption is evaluated, the best results were obtained with the 540E PTO application at the V3 working speed. When an evaluation is made considering all the parameters, it is concluded that the 540E PTO application will provide certain advantages in terms of fuel consumption compared to the 540 PTO application for the silage machine operating by taking the motion from PTO. 540E PTO application can be used as an important alternative to 540 PTO application for machines of similar capacity and features.
Show more [+] Less [-]Using of Essential Oil Mixture in Quail Breeders (Coturnix Coturnix Japonica) for Improving Cecal Short-Chain Fatty Acid Concentrations
2020
Özlem Durna Aydın | Gültekin Yıldız
The aim of this study is to investigate the effect of added to mixture essential oil consist of mint oil, juniper oil, rosemary oil and oregano vulgare oil added in drinking water at on intestinal health in quail breeders. A total of 160 Japanese quail breeders (control group each subgroup 6 females 6 males, experimental groups each subgroup 5 females 5 males) 17 weeks of age were randomly divided into 3 treatment groups and each group was divided into 5 replicates. The experimental period lasted 56 days. Maize and soybean meal-based diets were offered ad libitium to the birds from during the experimental period. Treatments were as follows: C, (Control; without supplementation to the drinking water); E1 (0,1ml/L essential oil mixture supplementation to the drinking water) and E2 (0,3ml/L essential oil mixture supplementation to the drinking water. Acetic acid, butyric acid, isocaproic acid and SCFA values were linearly affected by the increasing level of essential oil mixture (mint oil, juniper oil, rosemary oil and oregano vulgare oil). There were no significant differences in propionic acid, isobutyric acid, valeric acid, isovaleric acid, caproic acid and BCFA concentrations. In conclusion, essential oil mixture consists of mint oil, juniper oil, rosemary oil and oregano vulgare oil can be used to improve intestinal health in quail breeders drinking water.
Show more [+] Less [-]Determination of Relationship between Cage Position and Laying Time by Correspondence Analysis
2020
Samet Hasan Abacı | Lütfi Bayyurt | Yalçın Tahtalı | Ahmet Şekeroğlu | Mustafa Duman
The research was carried out in a 3-floor cage system in the research farm of Tokat Gaziosmanpasa University. 6 chickens were placed in each cage compartment and 5 repetitions were created on each floor. Existing eggs were collected at 9:00 - 13:00 and 16:00 from a total of 90 Atak-S chickens between 24-42 weeks. A total of 1442 eggs were obtained from 90 chickens. To determine the relationship between cage position and laying time, correspondence analysis was applied. SPSS package program was used to analyze the data. According to the results, it was found statistically significant that chickens on different floors lay eggs at different times. According to the results of the correspondence analysis, the first dimension explanation power was 99.7% and the explanation power in the second dimension was 0.3%. When the inertia in terms of lattice layers in the first dimension was examined, it was determined that the explanation power of the first floor was 65.4%, and in the second dimension, the explanation power of the second (56.9%) and third floor (41.8%) was higher. When the variability in terms of egg collection hours in the first dimension was examined, it was determined that the explanatory power for egg collection at 13:00 was 52.8%, and in the second dimension, it was 79.6% for the egg collection at 16:00. As a result, it was determined that the chickens on the first floor lay eggs between 9:00 am and the chickens on the 2nd and 3rd floor between 13:00 and 16:00. Although the eggs vary depending on the ambient temperature, it is known that they are usually collected in the morning hours by the producers. Therefore, it is important to rearrange the frequency of egg collection both economically and in terms of consumer health.
Show more [+] Less [-]Effect of Different Rates of Rice Husk Biochar on the Initial Growth of Moringa oleifera under Greenhouse Conditions in the Savannah Ecological Zone of Ghana
2020
Ammal Abukari | Nasare Iddrisu Nasare
This investigation was conducted to evaluate the outcome of rice husk biochar on growth performance of moringa. The study was carried-out in a greenhouse for 52 days. Different rates of rice husk biochar (150 to 350 g) was mixed with 500 g of soil. A Randomized Complete Block Design (RCBD) with 3 treatments (each of which was replicated 3 times) was used, giving a total of 12 experimental units. Plant height, stem diameter and number of leaves were assessed for each treatment. Results indicate that rice husk biochar (150 g, 250 g and 350 g) significantly increased the stem diameter of moringa as compared to that of the control 52 days after in the greenhouse. An increase in the number of leaves were observed at 150 g rice husk biochar after 40 days compared to the control. There were significant differences between treatments effects on all the parameters. Different rates of biochar certainly could constitute vital use of fertilizer to improve growth moringa in the nursery.
Show more [+] Less [-]Determinant of Sesame Export Performance in Ethiopia: A Panel Gravity Model Application
2020
Murad Mohammed Baker | Beyan Ahmed Yuya
Ethiopia’s sesame export earn percentage share in the total export had been rapid declining over the last decades while it was the second commodity in currency grossing of the country. The objective of this study was to examine the determinant factors of Ethiopia’s sesame exports performance, in the aspect of export trade, by the use of a more realistic model approach, a panel gravity model. It used short panel data that cover 11 countries of consistent Ethiopia’s sesame importers for the period of 13 years from 2002 to 2014. The panel unit root test of Levin-Lin-Chu was used for each variable and applied the first difference transformation for the variables that had a unit root. The random effect model results suggested that real gross domestic product of importing countries; Ethiopian real gross domestic product, real exchange rate and weighted distance were found to be the determinant factors of Ethiopia’s sesame exports performance. The estimated results revealed that as real gross domestic product of importing countries increase by 1%, the flows of Ethiopia’s sesame exports performance increase by 1.63%. Based on the finding results, the researcher recommends that the policy maker must adopt the policies that reduce the cost of shipping through improving the infrastructure for shipments sector and contract a free trade agreement with distant countries. The government should encourage the private sector to diversify their products and improving the quality of its products to increase the competitiveness the Ethiopian products in foreign markets.
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