Уточнить поиск
Результаты 21-30 из 676
A Multivariate Probit Analysis of Factors Affecting Risk Management Strategy Choices in Dried Apricot Farming Полный текст
2020
Orhan Gündüz | Ahmet Aslan | Vedat Ceyhan | Zeki Bayramoğlu
Dried apricot farms face many risks and uncertainties in Malatya, which is not only Turkey's but also the largest apricot production region in the world. Despite one of the major factors affecting farm efficiency, it was insufficient study on risk management in Malatya and even Turkey. The main purpose of the study was to measure the risk averse of dried apricot farms and to analyze of the factors affecting risk management strategies use of the dried apricot farms where an extensive production zone in Malatya. In the study, data collected from randomly selected 71 farms using questionnaires were used. The risk averse (attitude) coefficients of farmers were estimated by the “equally likely certainty equivalent” method. The factors affecting the risk management strategies choise were estimated using Multivariate Probit Model.
Показать больше [+] Меньше [-]Management of Erwinia amylovora by Potential Bio-Pesticides in vitro and in vivo Conditions Полный текст
2020
Kubilay Kurtulus Bastas
Erwinia amylovora, the causative agent of fire blight disease, threatens a lot of species of the Rosaceae family. Antibiotics and copper compounds in chemical applications are most frequently are applied, but these can be phytotoxic and cause resistant strains of the pathogen. In our experiments, 20 herbal materials were tested for their antimicrobial effectiveness against the fire blight pathogen in vitro and in planta. The air-dried plants ground into fine powder and extraction was performed at room temperature by maceration with 80% (v/v) methanol/distilled water. The minimum inhibitory concentration values were determined by using disc diffusion method and streptomycin was used as control in all experiments. Antimicrobial activity was evaluated by measuring the inhibition zones in reference to the pathogen. Among the tested plants, Szygium aromaticum, Thymus vulgaris and Rhus cararia showed a good antibacterial activity and they inhibited the growth of E. amylovora with inhibition zone diameter ranging from 21 to 27 mm at 20% (w/v) in absolute methanol compared to streptomycin (31 mm) in vitro conditions. In vivo tests were performed by using highly virulent E. amylovora isolate (Eak24b, 91%) grown on TSA medium and inoculation on young shoots of 3-year-old Gala variety of apple and Santa Maria variety of pear seedlings at 107 CFU ml-1 density of the pathogen. Disease severity (%) was assessed by by proportion of blighted shoot length to the whole shoot length and also efficacy of the extracts was determined by using Abbott formula. The highest efficacy was obtained by S. aromaticum and T. vulgaris extracts of reducing shoot blight of cv. Gala and cv. Santa Maria by 67.81% - 64-12% and 51.50% - 51.04% ratios, respectively. Obtaining results showed that some medicinal and aromatic plant extracts might be used against fire blight disease as potential new generation chemicals on pome fruits within integrated and organic control programs.
Показать больше [+] Меньше [-]Comparison of Genetic Structure Using Molecular Markers in Estivated and Hibernated Native Bombus terrestris (L.) Populations Полный текст
2020
Bahar Argun Karslı | Fehmi Gürel
In this study, we aimed to investigate genetic differences between estivated Phassalis and hibernated Termessos native B. terrestris populations based on 20 microsatellite loci and two mtDNA gene regions (COI and cytb). The mean number of allele per locus, observed heterozigosity and inbreeding coefficients were determined 12.00 and 11.00, 0.68 and 0.65, 0.22 and 0.26 in Termessos and Phassalis populations, respectively. Pairwise FST value was calculated as 0.023 by using 20 microsatellite loci. According to the mtDNA COI gene region, all samples in both two populations were included in a single haplotype (Haplotype B). Four different haplotypes (Haplotypes 1-4) were determined according to the mtDNA cytb gene region. Pairwise FST value was calculated as 0.0013 according to the mtDNA cytb gene region. There were no significant differences between these two natural B. terrestris populations in terms of the 20 microsatellite and two mtDNA loci examined. According to results, life cycle differences of different native B. terrestris population are probably determined by environmental factors (photoperiod, temperature, flora, moisture, altitude etc.) rather than genetic influences.
Показать больше [+] Меньше [-]Examining of Salt Stress Tolerance of Some Local Bread Wheat (Triticum aestivum L.) Genotypes at Early Growth Stage Полный текст
2020
Kübra Özdemir Dirik | İbrahim Saygılı | Mahir Özkurt | Mehmet Ali Sakin
Salinity is one of the most important abiotic stress factors causing serious problems in agricultural areas in the world. In this study aimed to determine the salt stress tolerance of local bread wheat genotypes collected from some provinces of Turkey and provided from seed gene banks in our country in early growth stage. In the research, twenty five local bread wheat genotypes and four registered bread wheat cultivars as standard were used as material. Genotypes were subjected to salt stress germination percentage, radicle length, coleoptile length, shoot length, germination index, root fresh and dry weight, were measured. Germination percentage was decreased significantly by 39.1 % in salt application compared to the control. According to the germination percentages, TR 53869, Kate A1 and Pehlivan genotypes were found to be tolerant to salt stress in early growth stage TGB 000543 and TR 63579 were sensitive. Considering all traits investigated, genotype TR 53869 can be considered as a genotype tolerant to salt stress in early growth stage. It is predicted that this genotype can be used in breeding studies for the areas where salt stress is a problem in wheat.
Показать больше [+] Меньше [-]The Effects of Microwave and Thermosonication Applications on the Quality in The Pasteurization of Orange Juice Полный текст
2020
Hamza Bozkır | Ahsen Rayman Ergün
The aim of the study was pasteurization of orange juces using microwave, thermosonication and traditional methods and comparing the quality properties. In this study thermosonication, microwave (540, 720, 900W), and traditional pasteurization methods were used for pasteurization of orange juice at 85°C. Pectin methlyesterase enzyme inactivation and Vitamin C, colour, total phenolic content, total carotenoid content were measured. It was determined that the processing times of orange juices pasteurized by traditional, thermosonication and microwave were 180, 120, and 60-85 s, respectively. The highest pectin methlyesterase enzyme inactivation (%95.64) was found after the microwave pasteurization at 900 W. The loss was found in the total phenolic content of orange juice was 6.15% by thermosonication process, whereas this loss was 16.11% by traditional method compared to fresh orange juice. The total colour difference was found the lowest in thermosonication application with a value of 7.98, and the highest vitamin C content (52.52 mg/100 mL) was detected in the microwave pasteurization group of 540 W.
Показать больше [+] Меньше [-]The effects of the War on the Syrian Agricultural Food Industry Potential Полный текст
2020
Mustafa Bayram | Yasemin Gök
Syria is a middle-income developing country with an economy that heavily depends on the food and agricultural sectors. However, with the recent Syria crisis/war, which started in March 2011, Syria’s food and agricultural industries have badly been affected. While the most of the processing factories and agricultural facilities such as industrial zones, food plants, greenhouses, irrigation canals and pumps have been damaged in the conflict areas, this resulted in a huge recession in the food and agricultural productivity of Syria. It is estimated that this will impact the country to meet the future food requirements as well. In this study, the agricultural and food potential of Syria was analysed based on agricultural area, available lands, irrigation, food sectors etc. for the future planning food policies.
Показать больше [+] Меньше [-]Determination of the Effect of Some Properties on Egg Yield with Regression Analysis Met-hod Bagging Mars and R Application Полный текст
2020
Demet Canga | Mustafa Boğa
In the study, it has been demonstrated its use for a data set obtained from layer hens in a hybrid approach obtained by combining BAGGING and MARS. In the study, the data of 2018 of the egg production enterprise in a private livestock enterprise in the Çukurova Region of Adana province were used. In the research, a data set obtained from Lohman breed chickens, who are at an average age of 60 weeks, was used. Earth (enhanced adaptive regression through hinges) and caret (classification and regression training), mda (Mixture Discriminant Analysis) packages were used in R STUDIO program to provide a stronger solution of regression problems in the created MARS and Bagging MARS algorithm. The estimation performance of the bagging MARS technique was evaluated with the goodness of fit criteria by taking the B value of the bootstrap sample number 3. In the study, the effect of temperature and humidity on egg yield, broken / cracked eggs, number of dead animals and feed consumption was investigated using MARS and bagging MARS analysis. While the effect of evening temperature(t3) on egg yield was found to be significant, it was not included in the estimation equation since morning (t1) and noon(t2) temperatures did not have a significant effect. Since the number of broken / cracked eggs and dead animals is less than 5 weeks, these variables are not included in the estimation equation in MARS and Bagging MARS models. It has been observed that feed consumption has a positive contribution in both models.
Показать больше [+] Меньше [-]Kaz Yetiştiriciliğinde Her Yönü ile Biyogüvenlik Prosedürleri Полный текст
2020
Mehmet Sarı | Mustafa Saatcı
Kaz yetiştiriciliğinde verimli ve karlı bir üretimin yapılabilmesi ancak sağlıklı sürülerin olması ile mümkündür. Her ne kadar kanatlı hayvanlar içerisinde hastalıklardan en az etkilenen tür kazlar olmasına rağmen, kazlarda ciddi kayıplara neden olan birçok bakteriyel, viral, paraziter ve mantar hastalıkları bulunmaktadır. Diğer kanatlılarda olduğu gibi kaz yetiştiriciliğinde de hastalığın tedavisi, korunmadan daha pahalıdır. Bu nedenle hastalıkların çıkmasını ve yayılmasını en aza indirmek, hastalıkların tedavisinde tasarruf sağlamak, sürü sağlığını iyileştirip-geliştirmek, hayvan ölümlerini en aza indirmek ve işletme karlılığını artırmak için biyogüvenlik prosedürlerinin uygulanması gerekmektedir. Bu biyogüvenlik prosedürleri ise rutin ve yüksek riskli olmak üzere iki şekilde yapılabilir. Rutin biyogüvenlik prosedürleri hastalık etkenlerinin işletmeye girişinin engel olunması, etkili hijyen ve sanitasyon programının uygulanması, yeterli bağışıklığın oluşturulması için etkili aşı programlarının olması, kalifiye personel ile çalışılması, sürü yönetim programının düzgün olması ile denetim ve kontrolün iyi bir şekilde yapılması ile mümkündür. Yüksek riskli biyogüvenlik prosedürleri ise şüpheli ve salgın bir hayvan hastalığı durumunda planlı ve programlı bir şekilde yapılması gereken uygulamalardır. Sonuç olarak kaz yetiştiriciliğinde biyogüvenlik prosedürleri etkili ve disiplinli bir şekilde yerine getirilirse, sağlıklı sürüler ve daha fazla kârlılık elde edileceği unutulmamalıdır.
Показать больше [+] Меньше [-]The Effect of Organic Liquid Fertilizer Given in Different Periods on Grain Yield, Yield Components and Quality in Durum Wheat (Triticum durum L.) Полный текст
2020
Arzu Mutlu | Timuçin Taş | Ali Beyhan Uçak
This study was carried out in order to determine the effect of organic liquid fertilizer applications on grain yield, yield characteristics and some quality trait of wheat in different periods in organic agriculture trial area. The trial was conducted in four replications according to a split-plot design in randomized blocks in trial area of the vocational Akçakale high school during the 2016-2017 and 2017-2018 growing season. Şölen 2002 and Edessa wheat varieties and organic liquid fertilizer and barnyard manure were used as materials in the research. Organic liquid fertilizer was applied in five different periods such as control, tillering, beginning of the bolting, the end of the bolting and the hearing, provided that the dose remained the same. According to the results of the research, the highest values were obtained in the end of the bolting of Şölen-2002 variety in terms of grain yield and yield components (spike length, spikelet number, number of grains per spike, grain weight per spike, plant height, hectoliter weight and thousand kernel weight). According to the results of two years, the highest grain yield (530.43 kg/da-1) was obtained in the end of the bolting application of Şölen-2002 variety. Since the first year of the study was warmer and more drought than the second year, While the yield and yield components decreased, the quality characteristics (protein and dry gluten ratio) increased. Due to the temperatures, Edessa variety had higher protein and dry gluten ratios than Şölen-2002 variety.
Показать больше [+] Меньше [-]Economic Performance of Rainbow Trout Farming in Turkey Полный текст
2020
Mehmet Aydoğan | Osman Uysal | Serhan Candemir | Yunus Emre Terzi | Rahmi Taşçı | Tuba Beşen | Fatma Pınar Öztürk | Meltem Emre | Önder Eralp | Orhan Gündüz | Vedat Ceyhan
The purpose of this research is to measure the economic performance and development of rainbow trout farming in inland waters in Turkey. As a result of the research, it was determined that the farms use an average of 82% of their capacities. There was a negative relationship between the farm-scale and CUR, and as the farm scale grows, the CUR decreases. The average feed conversion rate (FCR) of the enterprises was calculated as 1.12. Fish capital (36.8%) had the largest share in active capital, and equity capital (87.2%) had the largest share in passive capital. Net profits of farms falling to one-tonne production capacity; it was calculated as 2.374 TRY in small-scale farms, 1.322 TRY in medium-scale farms and 1.896 TRY in large-scale farms. The proportional profit of farms was 1.08, 0.99, and 1.17, respectively. The average current ratio value of the examined farms was calculated as 3.67 and liquidity ratios as 3.55. As the farm's scale grows, current ratio values also increase, and large-scale farms had more cash assets than small and medium-scale farms. As a result of the research; It can be said that the trout-breeding farms in Turkey have current assets that can pay their short term debts. The average borrowing rate of farms was 0.16. In other words, 16% of the financial assets of the trout farms in Turkey were met from debts. The turnover rate of the assets of the farms was 0.79 and is below the sector average. The average rate of economic profitability of farms was calculated as 0.13. In other words, the income that farms generate from aquaculture is more than the opportunity cost.
Показать больше [+] Меньше [-]