خيارات البحث
النتائج 261 - 270 من 450
An Investigation on Determination of Seed Characteristics of Some Gluten-Free Crops (Amarantus mantegazzianus, Chenopodium quinoa Willd., Eragrostis tef [Zucc] Trotter, Salvia hispanica L.)
2020
Zeynep Dumanoğlu | Hakan Geren
To meet the nutritional requirements required for human and animal nutrition due to climatic changes, research on determination of rich in nutrients and quality, products with high resistance to adverse environmental conditions and their possibilities for growing and reproduction are carried out. This research was carried out between 2018-2019. As a material, seeds belonging to the amaranth (Amarantus mantegazzianus), chia (Salvia hispanica L.), quinoa (Chenopodium quinoa) and teff (Eragrostis tef [Zucc] Trotter) plants were studied. Some characteristics of these seeds were determined such as shape, size, mean arithmetic and geometric diameter, sphericity and thousand grain weight. According to the data obtained; the highest average length (1.140 mm), width (1.080 mm) and surface area (0.930 mm2) of the seeds of the quinoa seeds compared to other seeds; the tambourine seeds had the lowest average length (0.540 mm), width (0.300 mm) and surface area (0.130 mm2) values. In terms of thousand grain weights, the seeds of the quinoa plant are the heaviest seeds with 3.3600 g; the lightest seeds were determined to belong to the tambourine seeds with 0.0028 g.
اظهر المزيد [+] اقل [-]Evaluation of the Effect of Dissolved Metals Detected in Değirmendere Dam (Amasya, Turkey) on Drinking and Irrigation Water Quality
2020
Fikret Ustaoğlu
Dams are important sources particularly for energy production as well as drinking and irrigation water. In this study, dissolved metal concentrations in Değirmendere Dam water in Amasya province were determined by ICP-MS and the data were evaluated in terms of drinking/irrigation water. Mean value of each metal in samples collected from 5 different points of the reservoir is presented in µg L as follows; Ca (50943)> Mg (42212)> Na (31637)> K (3725)> Al (63.68)> Fe (43.30)> Zn (30.78)> Cu (5.79)> Mn (4.59)> Ni (2.97)> Cr (1.18)> Pb (1.14)> As (1.04)> Cd (0.69). These results did not exceed the drinking water limit values recommended by the World Health Organization (WHO) and Turkish Standards (TS 266). Water quality index (WQI), heavy metal pollution index (HPI) and heavy metal evaluation index (HEI) values were calculated as 16.63-17.54-1.00, respectively. In terms of hazard quotient (HQ), hazard index (HI) and cancer risk (CR), the water quality of the reservoir is not potentially dangerous for adults/children. Dam water is convenient for irrigation based on sodium absorption rate (SAR = 0.78) and sodium percentage (Na = 19.56%). However, magnesium hazard (MH = 57.70) value is above the limit value of 50 with reference to irrigation water.
اظهر المزيد [+] اقل [-]The Effect of Oestrus Synchronization on Reproductive Performance and Birth Weight in Hair Goats during The Breeding Season
2020
Ebru Şirin | Emre Şirin | Serdar Genç
In this study, it was aimed to determine the effect of oestru synchronization on the fertility of hair goats during the breeding season. Animal material of this experiment consisted of 200 heads of hair goats between 3 and 5 years of age. The animals were divided into two groups, (Control group, KG, n = 100; Oestrus synchronization group, KS, n = 100). The animals in the KS group received intravaginal sponges containing 30 mg flugestone acetate which removed after 12 days and 500 IU of PMSG/per animal administered IM. The animals in both groups were mated using bucks for 4 days. The single birth rate was 72% in the KG and 35% in the KS group. Fecundity and litter size were 1.20 and 1.59 in the control group and 1.25 and 1.64 in the KS group, respectively. As a result, the application of oestrus synchronization in hair goats during the breeding season improved the fertility.
اظهر المزيد [+] اقل [-]Mathematical Modelling of the Volumetric Efficiency for Fluted Rolls Metering Different Crop Seeds
2020
Muhammed Hakan Özdemir | Adnan Değirmencioğlu
The objective of this study was to develop a mathematical model for predicting the volumetric efficiency for fluted rolls metering different crop seeds. A special test stand was designed and manufactured in order to conduct experiments in order to find out the volumetric efficiency of the fluted rolls. In order to meet the above objective, alfalfa, barley, coriander, flax, oat, rye, safflower, sesame and wheat seeds were used. Experiments were conducted at different roll revolutions and roll lengths by considering the seed rate for each crop and the rolls were driven by a step motor as controlled by a software installed on a laptop computer. Five replications were achieved for each experiment and a total of 1660 flow rate data was obtained. Five different models for volumetric efficiency were developed. Analysis based on different goodness of fit criteria were achieved to compare models in to order to select the appropriate one. The study conducted not only resulted in developing volumetric efficiency models but also revealed an important finding based on low flow evenness (low CV, %) values obtained as compared to other studies in the literature.
اظهر المزيد [+] اقل [-]Determination of Plant Protection Problems on Wheat Production in Sivas Province
2020
Mustafa Belen | Dürdane Yanar | Gülistan Erdal
Objective of this study is to determine plant protection problems which wheat growers encountered and their knowledge on plant protection in Sivas province. This study is carried out in the Central, Hafik, Ulas and Yıldızeli districts of Sivas province with 220 farmers. The problems which related to plant diseases, pests and weeds in wheat growers faced were also determined. Almost all farmers (99.09%) apply chemical control. Farmers decides the pesticide applications in their wheat growing areas according to own experience (84.09%), manufacturers recommendations (24.09%), the advice of agricultural experts (17.27%) and the advice of neighbours and friends (9.55%). Farmers mostly have been applying pesticides based on their own experiences. In recent years, pesticides are being used widely against diseases, pests and weeds. Some times over dose application of pesticides by farmers in judiciously resulted in environmental pollution, health problems. Also the natural enemies will be affected. Furthermore, in weed control farmers use herbicides against broad leaved weeds. It was determined that the farmers do not have knowledge about narrow leaved weeds and herbicides use against these weed species is limited. According to the results of this survey, it will be beneficial to provide training on plant protection to wheat producers in the region.
اظهر المزيد [+] اقل [-]Genetic diversity analysis with the development of new SSR markers in Cucurbita pepo L. population
2020
Şerife Eylül Duman | Ali Tevfik Uncu | Ahmet Kayraldız
Cucurbitaceae family, contain lots of important species in terms of worldwide nutritional and economical value. Despite the molecular genetic researches conducted in recent years, genome data is quite limited for C. pepo which is agriculturally important. The main motivation of this work is to develop new and numerous SSR markers (Simple Sequence Repetitions) that is unique to Cucurbita genome which has extremely small number of genome-specific markers. The reference genome was scanned with bioinformatic tools in terms of repetitive motifs and 76744 genome-specific SSR loci were found. In this scope, 52303 SSR markers were developed for the first time by containing 20 chromosomes in C. pepo L. genotype and the data that belongs to the developed markers is saved in a database. The majority of the most common SSR motifs were detected as di-nucleotide repeats which was rich in terms of AT/AT. To evaluate the amplification efficiency and polymorphic band producing capability of newly developed SSR markers, a collection which contains 39 Cucurbita pepo L. genotypes is characterized and the SSR alleles are scored as 0/1, so that the data file was subjected to the analysis of genetic diversity in DARwin6 software program. The results of this study were evaluated as obtaining important molecular genetic markers of the pumpkin and using them in the future studies of molecular breeding and mapping to obtain important information.
اظهر المزيد [+] اقل [-]Assessment of Metal Levels in Biotic and Abiotic Materials from Giresun Forests
2020
Mustafa Türkmen | Aysun Türkmen | Ayhan Kara
The study investigated the metal levels in biotic and abiotic materials from Giresun forests. While soil and water samples were selected as abiotic materials, leaves and moss were selected as biotic materials in forest. These selected materials were sampled from six stations. All samples were analyzed three times for arsenic, iron, chromium, copper, manganese, nickel, lead and zinc by ICP-OES. A logarithmic transformation was done on the data to improve normality. One way ANOVA and Duncan’s multiple range tests were performed to test the differences among metal levels of stations. The differences among metal levels in stations were statistically significant (p
اظهر المزيد [+] اقل [-]The Effects of Zeolite Application on Nitrate Quantity in Soil and The Growth of Maize Plant (Zea Mays L.)
2020
Sezer Şahin | Gamze Uçar Tutar | Naif Geboloğlu
Nitrogen losses in agricultural areas cause environmental pollution. At the same time, it reduces the yield in crop production. The aim of this study is to investigate the effects of zeolite and nitrogen applications on the development of maize plant. Another aim is to reveal nitrate changes in soil. Everest maize variety was used in the study. Zeolite doses of 0, 125, 250 and 500 kg/da were applied to the soil. Nitrogen doses were applied to the soil at 5, 10, 15 and 20 kg/da. In this study, zeolite and nitrogen applications increased the plant height, cob weight and green forage yield of maize plant statistically. The highest green weed yield was 6563 kg/da in Z3N3 application and the lowest green forage yield was 4021 kg/da in Z0N0 application. Increased nitrogen doses increased the amount of nitrate in soil by significantly 1% and zeolite applications increased by significantly 5%. The results of this study would be beneficial in the application of zeolite to the soil in order to reduce nitrogen losses and to make the plant benefit more from nitrogen.
اظهر المزيد [+] اقل [-]Surface Coating Applications on Active Parts of Tillage Machines
2020
Yaşar Serhat Saygılı | Bülent Çakmak
Tillage machines such as plow, cultivator, rotavator, and rototiller are widely used for this purpose. However, one of the major problems in working with tillage machines is the wear of active parts over time. Abrasion occurs differently in active parts of tillage machines and can cause the machines used to lose the functionality expected of them. It is preferred to cover the active parts with wear-resistant coating materials to reduce the level of wear to meet both agro technical demands and high tillage efficiency. The way of wear the active parts of the machines; it is abrasive wear caused by friction against solid materials in the soil (clods, stones, harder materials, etc.) and/or adhesive wear caused by soil moisture. Reducing the wear on the active parts with the coating process to be made will both prevent material loss caused by abrasion in the active part and increase the efficiency/effectiveness of the machine. Because of the limited number of studies on this subject in the agricultural sector shows that the subject is open to improvement. In this study, the use of new coating methods used in other production sectors (especially in mold manufacturing) for the last decade in coating the active parts of soil tillage machines and their effects on product performance and life by increasing wear resistance are compiled. Coating methods that can be adapted to the agricultural sector can be listed as; Gas Phase, Liquid Phase and Melted/Semi-Melted Phase. Among these, studies on Plasma Thermal Spraying (Molten / Semi-Molten Phase Coating Methods) and thin film coating (Vapor Phase Coating Methods) are prominent. On the other hand, it is predicted that the desired wear resistance can be further improved by applying different coating methods and combinations.
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