Subjects -> AGRICULTURE (Total: 981 journals)
    - AGRICULTURAL ECONOMICS (93 journals)
    - AGRICULTURE (680 journals)
    - CROP PRODUCTION AND SOIL (120 journals)
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AGRICULTURE (680 journals)            First | 1 2 3 4     

Showing 601 - 263 of 263 Journals sorted alphabetically
Science and Technology Indonesia     Open Access  
Science as Culture     Hybrid Journal   (Followers: 10)
Science, Technology and Arts Research Journal     Open Access   (Followers: 1)
Scientia Agricola     Open Access  
Scientia Agropecuaria     Open Access  
Seed Science and Technology     Full-text available via subscription  
Seed Science Research     Hybrid Journal  
Selçuk Tarım ve Gıda Bilimleri Dergisi     Open Access  
Semiárida     Open Access  
Siembra     Open Access  
Small Ruminant Research     Hybrid Journal   (Followers: 2)
Smart Agricultural Technology     Open Access  
Social & Cultural Geography     Hybrid Journal   (Followers: 26)
Social and Natural Sciences Journal     Open Access  
South African Journal of Agricultural Extension     Open Access   (Followers: 3)
South African Journal of Economics : SAJE     Hybrid Journal   (Followers: 7)
South African Journal of Plant and Soil     Hybrid Journal   (Followers: 1)
Spatial Economic Analysis     Hybrid Journal   (Followers: 9)
Sri Lanka Journal of Food and Agriculture     Open Access   (Followers: 1)
Stiinta Agricola     Open Access  
Studies in Australian Garden History     Full-text available via subscription   (Followers: 4)
Sugar Tech     Hybrid Journal   (Followers: 1)
Sustainability Agri Food and Environmental Research     Open Access   (Followers: 4)
Sustainability and Climate Change     Full-text available via subscription   (Followers: 18)
Sustainable Agriculture Research     Open Access   (Followers: 3)
Sustainable Environment Agricultural Science (SEAS)     Open Access  
Tanzania Journal of Agricultural Sciences     Open Access   (Followers: 4)
Terra Latinoamericana     Open Access  
The Agriculturists     Open Access  
The Journal of Research, PJTSAU     Open Access   (Followers: 13)
Translational Animal Science     Open Access  
Trends in Agricultural Economics     Open Access   (Followers: 7)
Tropical Agricultural Research     Open Access   (Followers: 2)
Tropical Agricultural Research and Extension     Open Access   (Followers: 2)
Tropical and Subtropical Agroecosystems     Open Access  
Tropical Grasslands - Forrajes Tropicales     Open Access  
Tropical Technology Journal     Open Access  
Tropicultura     Open Access  
Turkish Journal of Agricultural and Natural Science / Türk Tarım ve Doğa Bilimleri Dergisi     Open Access  
Turkish Journal of Agricultural Engineering Research     Open Access  
Ukrainian Journal of Veterinary and Agricultural Sciences     Open Access  
Uluslararası Tarım ve Yaban Hayatı Bilimleri Dergisi / International Journal of Agricultural and Wildlife Sciences     Open Access  
UNICIÊNCIAS     Open Access  
Universal Journal of Agricultural Research     Open Access  
Universidad y Ciencia     Open Access  
Urban Agricultural & Regional Food Systems     Open Access  
Viticulture Data Journal     Open Access  
VITIS : Journal of Grapevine Research     Open Access   (Followers: 1)
Walailak Journal of Science and Technology     Open Access  
Wartazoa. Indonesian Bulletin of Animal and Veterinary Sciences     Open Access  
Weed Biology and Management     Hybrid Journal   (Followers: 4)
Weed Research     Hybrid Journal   (Followers: 5)
West African Journal of Applied Ecology     Open Access  
Wildlife Australia     Full-text available via subscription   (Followers: 1)
Wirtschaftsdienst     Hybrid Journal   (Followers: 5)
World Journal of Agricultural Research     Open Access  
World Mycotoxin Journal     Hybrid Journal   (Followers: 3)
World's Poultry Science Journal     Full-text available via subscription   (Followers: 3)
علوم آب و خاک     Open Access  

  First | 1 2 3 4     

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Turkish Journal of Agricultural and Natural Science / Türk Tarım ve Doğa Bilimleri Dergisi
Number of Followers: 0  

  This is an Open Access Journal Open Access journal
ISSN (Print) 2148-3647
Published by DergiPark Homepage  [187 journals]
  • No title

    • Authors: Rahmi TAŞCI; Sevinç KARABAK, Turgay ŞANAL, Asuman KAPLAN EVLİCE, Goncagül SARI, Serhan CANDEMİR, Belma ÖZERCAN, Merve BOLAT, Selda ARSLAN, Zeki BAYRAMOĞLU
      PubDate: Sat, 23 Jul 2022 00:00:00 +030
       
  • No title

    • Authors: Hasan ÖZCAN; Ali SUNGUR, Timuçin EVEREST, Erdem TEMEL, Mustafa BOZCU, Mustafa SOYLAK
      PubDate: Sat, 23 Jul 2022 00:00:00 +030
       
  • Investigation of Some Drugs and Metals Effects on Aldose Reductase and
           Sorbitol Dehydrogenase Enzymes from Goat (Capra aegagrus hircus) Kidney

    • Authors: Mahinur KIRICI; Şükrü BEYDEMİR
      Abstract: The effects of some antibiotics and metals on goat (Capra aegagrus hircus) kidney aldose reductase (AR) and sorbitol dehydrogenase (SDH) activities were examined. For drugs and metals that exhibit inhibitory effect, Ki constants were calculated and inhibition types were determined by using Lineweaver-Burk curves. In our study, the highest inhibition showed ceftriaxone antibiotic in AR enzyme with an IC50 value of 0.0274 mM. More potent AR inhibitors can be synthesized from the ceftriaxone compound. This compound is followed by amikacin sulfate and ciproflaksasin compounds with IC50 values of 0.061 and 0.25 mM, respectively. The highest inhibition of metals showed Co+2 ion with IC50 value 0.000445 mM. This metal is followed by Fe+2 and Zn+2 with IC50 values of 0.0286 and 0.084 mM, respectively. In SDH enzyme, the highest inhibition showed rifamycin sodium antibiotic with an IC50 value of 0.016 mM. More potent SDH inhibitors can be synthesized from the rifamycin sodium compound. This compound is followed by ceftriaxone and cefuroxime compounds with IC50 values of 0.025 and 0.16 mM, respectively. The highest inhibition of metals showed Co+2 ion with IC50 value 0.00044 mM. This metal is followed by Fe+2 and Zn+2 with IC50 values of 0.009 and 0.16 mM, respectively.
      PubDate: Sat, 23 Jul 2022 00:00:00 +030
       
  • No title

    • Authors: İlyas DELİGÖZ; Miray SOKMEN
      PubDate: Sat, 23 Jul 2022 00:00:00 +030
       
  • No title

    • Authors: Alparslan KOÇAK
      PubDate: Sat, 23 Jul 2022 00:00:00 +030
       
  • No title

    • Authors: Zeynep ÖZ; Hasan DEĞİRMENCİ
      PubDate: Sat, 23 Jul 2022 00:00:00 +030
       
  • Rearing of the Diamondback Moth, Plutella xylostella L.
           (Lepidoptera:Plutellidae) on Different Artificial Diets in the Laboratory
           Conditions

    • Authors: Ceren SARAN; Hanife YANDAYAN GENÇ
      Abstract: The diamondback moth, Plutella xylostella L. (Lepidoptera:Plutellidae), is one of the most serious pests of Brassicaeous plants worldwide. The suitable artificial diet formulations are required for mass rearing of insects under laboratory conditions. The aim of the study is to determine the most suitable formulation and to reveal the age-stage and two-sex life tables by examining the biological properties of diamondback moth on different artificial diets. Two-way hierarchical cluster analysis was established to determine some biological traits using different artificial diets and white cabbage as a positive control. In hierarchical cluster analysis, the results were obtained in CS diet was similar to control for some biological characteristics such as pupal weight, longevity etc. On the artificial diets, the GRR was the highest on the H&H diet as 39.92±7.22 offspring/individual and the lowest on the tested Tuta diet as 18.92±5.21 offspring/individual. λ and r were the highest in A diet as 1.10±1.01 and 0.10±9.20 days, lowest in Plutella and Tuta diet 1.07±1.70 and 0.07±1.52 days, respectively. R0 was the highest on CS diet (12.08±2.64 offspring/individual) and lowest in Tuta diet (4.58±1.44 offspring/individual). The highest daily fecundity (mx) was on the H&H diet as 8.69 eggs and the lowest on the Tuta diet as 3.06 eggs. The results showed that the CS diet developed in this study may be offered as an alternative diet formulation for mass rearing of the diamondback moth under laboratory conditions.
      PubDate: Sat, 23 Jul 2022 00:00:00 +030
       
  • Development of New Apparatus and Method for Generatıon Full-Sib
           Populations and Evaluation Pollen Effect in Maize

    • Authors: Fatih KAHRIMAN
      Abstract: This study was aimed to develop a new pollination method to examine the pollen effect (xenia) in maize. Four different genotypes differing in kernel color and kernel content were used as plant material. The experiment was established in the greenhouse of Çanakkale Onsekiz Mart University, Faculty of Agriculture, Plant Production Application and Research Unit in September 2020, by the randomized block design. Each genotype was planted in 30 pots. When the plants were at the time of flowering, the traditional controlled pollination method (control) and newly developed methods were applied to develop a 4×4 half diallel set (test). Combining ability and pollen effect calculations were made for single seed weight, protein content and oil content to compareof the results obtained from pollination methods. The similarities and differences of the genotype sets were examined based on protein band analysis in the seeds of the generated sets. According to the analysis of variance, it was determined that genotype, pollination and genotype × pollination interaction were important on the change in the investigated traid. According to the combining ability calculations, it was understood that the general combining abilities of the parent genotypes did not show a significant change in different pollination methods, whereas the results based on the specific combining abilities showed significant differences according to pollination method used. Similar results were obtained in the pollen effect calculations. It has been evaluated that specific combining ability and pollen effect calculations for hybrids give more robust results in the newly developed method. In protein band analyzes, changes were observed in the classification of hybrid genotypes based on cluster analysis of samples belonging to different pollination methods, except for the parents. This revealed that the protein bands could vary depending on the pollination method in maize
      PubDate: Sat, 23 Jul 2022 00:00:00 +030
       
  • The Effect of Different Nitrogen Doses on Herbage Yield and Quality of
           Annual Ryegrass (Lolium multiflorum cv. Caramba) in Mardin Conditions

    • Authors: Erdal KARADENİZ; Gülşah BENGİSU
      PubDate: Sat, 23 Jul 2022 00:00:00 +030
       
  • Soil Temperature Prediction with Long Short Term Memory (LSTM)

    • Authors: Orhan İNİK; Özkan İNİK, Taşkın ÖZTAŞ, Alaaddin YUKSEL
      Abstract: Soil temperature not only affects many soil properties, but also has a significant effect on plant development. Knowing and correct estimation of soil temperature is important for both soil management and crop production. The accuracy of temperature forecasts is very important, especially for the countries that stand out with their agriculture-based economies. Therefore, in recent years, different artificial intelligence methods have been used in soil temperature predictions. Deep learning methods lead the way in achieving high prediction accuracy. In this study, a Long Short-Term Memory (LSTM) network, which is a deep learning (DL) sub-architecture, is proposed to create an effective model for soil temperature prediction. The data used in the study are the daily soil temperatures at a depth of 50 cm for the years 2013-2021 of Bingöl province. For the training of the proposed LSTM model, 89% of the data set within the scope of the study was used, and. The remaining 11% was estimated by the model for assessing model success. The RMSE value as a result of the estimation made by the trained LSTM model was obtained as 1,25. The high estimation accuracy of the proposed model showed that this model could be successfully applied in temperature data estimation studies.
      PubDate: Sat, 23 Jul 2022 00:00:00 +030
       
  • Investigation of the Potentials of Oilseed Crops used as a
           First-Generation Feedstocks in the Production of Environmental Friendly
           Fuel Biodiesel in Terms of Sector

    • Authors: Hülya KARABAŞ
      Abstract: Our agricultural system is struggling to respond to increasing demands for food and renewable energy. We need to bring our local biofuel feedstocks production to the fore by using energy diversification, whose raw material is based on agriculture. The total area reserved for oilseed production in Turkey is still deficient, 4% of the entire arable land. First-generation oilseed crops are mainly used in biodiesel production in the world and our country. The number of licensed biodiesel production companies that cannot operate regularly due to lack of raw materials is rapidly decreasing. Potential biodiesel volumes were calculated for sunflower, cottonseed, rapeseed, and safflower, determined as the oilseed crops with the highest share in production in our country. Biodiesel volume was found insufficient for rapeseed and safflower crops. The total potential biodiesel volume of sunflower and cottonseed was calculated as 593 338 554 liters. For the continuity of companies in the biodiesel production sector, cultivation using alternative oil plants is of great importance.
      PubDate: Sat, 23 Jul 2022 00:00:00 +030
       
  • No title

    • Authors: Abdullah SESSİZ; Nurgül ÖNGÖREN
      PubDate: Sat, 23 Jul 2022 00:00:00 +030
       
  • Determination of the process effects on koruk juice quality

    • Authors: Ali GÜLER; Fatma Belgin AŞIKLAR, Kadir Emre ÖZALTIN, Ahmet CANDEMİR
      Abstract: In this study, clarified koruk juice was manufactured by using Sultani Çekirdeksiz and Cabernet Sauvignon koruk grape samples, and the effects of process stages on physicochemical quality of koruk juice were investigated. The processing effects were searched by collecting samples from six different stages during koruk juice processing. In Sultani Çekirdeksiz and Cabernet Sauvignon samples, soluble solid values were 7.47-8.33 and 7.07-7.60 °Brix, pH values 2.67-2.77 and 2.75-2.93, titretable acidity 2.56-2.77 and 2.55-2.79 g 100 mL-1, dry matter 8.03-9.96 % and 8.11-16.38 %, respectively. The koruk juice turbidity decreased by depectinization, clarification and filtration treatments. The turbidity values were 1.33 and 1.51 NTU in Sultani Çekirdeksiz and Cabernet Sauvignon samples, respectively. The color properties improved and yellowness was increased depending on the process. Tartaric acid, malic acid and citric acid contents were 36-49 %, 43-58 % and 6-8 % of the total acidity of koruk juice samples, respectively. Total phenolic contents decreased about 71-88 % and 1-27 % according to koruk samples and the pressing samples while these decrease rate was 97 % and % 33-36 for total flavonoid contents, respectively. In addition, antioxidant capacities decreased by about 72-82 % and 89-93 % for ABTS and DPPH, respectively, in the juice samples according to koruk samples. The decrease of the total phenolic and flavonoid contents and antioxidant capacity was due to both pressing and separation processes of the grape skin and seeds as well as clarification treatments.
      PubDate: Sat, 23 Jul 2022 00:00:00 +030
       
  • No title

    • Authors: Onur HOCAOĞLU; Mevlüt AKÇURA, Sait ÇERİ
      PubDate: Sat, 23 Jul 2022 00:00:00 +030
       
  • No title

    • Authors: Esra BULUNUZ PALAZ; Selay DOĞAN, Gülat ÇAĞLAR
      PubDate: Sat, 23 Jul 2022 00:00:00 +030
       
  • No title

    • Authors: Mikail ÖZCAN; Engin ŞEKER, Ünal İSPİR
      PubDate: Sat, 23 Jul 2022 00:00:00 +030
       
  • No title

    • Authors: Kenan KAYNAŞ; Hatice Nihan ÇİFTCİ
      PubDate: Sat, 23 Jul 2022 00:00:00 +030
       
  • Determination of Seed Yield, Straw Yield and Straw Quality of Some
           Hungarian Vetch (Vicia pannonica Crantz.) Genotypes

    • Authors: Selim ÖZDEMİR; Kağan KÖKTEN
      Abstract: The study was carried out for 3 years in 2014, 2015 and 2016 in order to determine the seed and straw yields and straw quality of some Hungarian vetch genotypes. In the study, 10 Hungarian vetch genotypes were used as plant material. The research was set up in a randomized block design with three replications. In the research; seed yield, straw yield, thousand grain weight, crude ash rate, crude protein rate and yield, acid detergent fiber (ADF), neutral detergent fiber (NDF), digestible dry matter (DDM) and dry matter intake (DMI) ratios, and relative feed value (RFV) of Hungarian vetch genotypes were evaluated. It was determined that the differences between the genotypes in terms of all the characteristics discussed in all three years of the experiment were statistically very significant. According to the result of three years of the experiment; it was determined that the seed yield of Hungarian vetch genotypes varied between 35.4-126.7 kg/da, straw yield between 463.2-1110.0 kg/da, thousand seed weight between 25.32-43.23 g, crude ash rate between 5.30-12.49%, crude protein rate between 7.04-15.01%, crude protein yield between 36.10-154.43 kg/da, ADF rate between 29.28-49.72%, NDF rate between 44.18-63.64%, DDM rate between 50.17-66.09%, DMI rate between 1.88-2.73% and RFV between 73.52-134.64%. According to the results of the research, it is seen that Anadolu Pembesi variety is superior in terms of yield, and Oğuz, Ağrı Population and Hat-5 genotypes in terms of quality compared to other genotypes in Bingöl conditions.
      PubDate: Sat, 23 Jul 2022 00:00:00 +030
       
  • The Effect of Different Levels of Pomegranate Seed Oil Supplementation to
           the Diet on Fattening Performance and Carcass Characteristics of Japanese
           Quails

    • Authors: Mustafa DEVECİ; Turgay ŞENGÜL
      Abstract: This study was carried out to investigate the effects of pomegranate (Thymbra spicata L. var. spicata) seed oil added to the diets of quails fed at different levels (0, 0.5, 1, 1.5 and 2%) on the fattening performance and carcass characteristics of quails. In the study, 135 daily-aged Japanese quail chicks were used and the animals were fed for 42 days. In the study, it was determined that the differences between the averages of live weight, feed consumption, feed conversion ratio, carcass weight and carcass yield in quails belonging to the control and treatment groups were statistically insignificant. Similarly, the differences between breast weight, wing weight, neck weight, liver weight, heart weight and testicular weight were also found to be insignificant in terms of the mean of carcass parts and internal organs. However, the differences between females in terms of thigh weight were significant (P
      PubDate: Sat, 23 Jul 2022 00:00:00 +030
       
  • No title

    • Authors: Burcu ALARSLAN; Emre ALARSLAN, Bünyamin SÖĞÜT
      PubDate: Sat, 23 Jul 2022 00:00:00 +030
       
  • Using ANOVA and ANFİS Approaches in Modelling Agricultural
           Experiments

    • Authors: Zeynep GÖKKUŞ; Sevil ŞENTÜRK, Firat ALATÜRK, Hülya HANOĞLU ORAL, Ahmet GÖKKUŞ
      Abstract: Adaptive Neuro-Fuzzy Inference System (ANFIS) can analyze the factors and factor levels affecting the subject of interest in many branches such as technology, production, health, social and education, depending on the many rules it creates and with a very small experimental error (RMSE). and modelling. It is also applied in the field of agriculture, especially for the solution of problems such as agricultural field selection or technological product development. On the other hand, classical statistical methods are generally used in due diligence studies in a certain time period, such as product cultivation. Experimental design methods or in other words analysis of variance (ANOVA) methods come first among these methods. With the experiments modeled by ANOVA, the factors affecting the subject of interest and the levels of these factors are analyzed according to a single rule of the method used. Since the Root Mean Square Error (RMSE) of the model formed by the multiple rules of ANFIS versus the single rule of ANOVA is much smaller, it gives stronger results. Modeling agricultural products with ANFIS depending on time will support data mining studies in this field. In this study, first both ANOVA and ANFIS methods were briefly explained, and then the data of a due diligence study carried out in agriculture were modeled by both methods and similar findings were obtained. However, mostly the standard deviation (RMSE) values of ANFIS were found to be smaller than ANOVA. In addition, the relationships between ANFIS outputs and real measurements were examined.
      PubDate: Sat, 23 Jul 2022 00:00:00 +030
       
  • No title

    • Authors: Nihal AKCA; Saim Zeki BOSTAN
      PubDate: Sat, 23 Jul 2022 00:00:00 +030
       
  • ANALYSIS OF WALNUT PRODUCING FARMS IN KAHRAMANMARAS PROVINCE

    • Authors: Fatma Zehra AYTEKİN; Semiha ÇETİNKAYA, Cuma AKBAY
      Abstract: The objective of this study is to analyze the structural characteristics, production and marketing structure of walnut producing farms in Kahramanmaras province, Turkey. For this purpose, a face to face survey was conducted with 90 producers producing walnuts in Caglayancerit district of Kahramanmaras province in February 2019. To analyze the obtained data, frequency tables and descriptive statistics were used. As a result of the research, all of the producers stated that walnut production has increased in their region in recent years. Approximately 53.33% of farmers stated that they were a member of a producer organization, 54.44% benefited from agricultural support, 95.56% did not have agricultural insurance, and 88.90% of the producers did not receive any training on walnut cultivation. Almost all of the producers (95.56%) benefited from foreign labor in walnut production and they were satisfied with walnut prices (98.9%). Results also indicated that the most important reason for the producers to produce walnuts is the price and market advantages (77.78%). Moreover, 44.44% of the producers sell their walnuts in the street market, and 35.56% sell through merchants. The results of this study will guide the decision makers in following the appropriate policies in terms of making improvements in walnut production.
      PubDate: Sat, 23 Jul 2022 00:00:00 +030
       
  • No title

    • Authors: Emine İKİKAT TÜMER; Seda GÜRÜN, Mahmut HAYTA
      PubDate: Sat, 23 Jul 2022 00:00:00 +030
       
  • No title

    • Authors: Tuğba BAŞKONUŞ; İlker YÜCE, Tevrican DOKUYUCU, Aydın AKKAYA, Hüseyin GÜNGÖR, Ziya DUMLUPINAR
      PubDate: Sat, 23 Jul 2022 00:00:00 +030
       
  • No title

    • Authors: Selma BOYACI; Mehmet SÜTYEMEZ, Yasin AY
      PubDate: Sat, 23 Jul 2022 00:00:00 +030
       
  • Comparison of Different Laboratory-Scale Ensiling Methods for Evaluating
           the Influence of Silage Additives on Maize Silage

    • Authors: Emrah KAYA
      Abstract: The current study aimed to compare the nutritional, chemical, and fermentative changes of maize silages with some additives prepared in standard glass jars (SGJ) and vacuum-packed model polyethylene bags (VP, Rostock). The treatment groups were control group (no addition), barley group (grinded barley addition 20 and 40 g kg-1), lactic acid bacteria (LAB) group, and LAB+enzyme mixture group. The ensiling method had no effect on the pH of the silage. (P=0.974) but the pH was increased with LAB addition (P=0.030). The dry matter (DM) contents of silages were increased by barley addition (P=0.030). Silages hemicellulose (HEM) content was decreased by ENZ inoculation (P=0.017). Silages total carbohydrates (TC) and metabolizable energy (ME) concentrations were highest in 40 g kg-1 barley group (P0.05). These results showed that vacuum-packed polythene bags do provide practical, flexible, and cost-efficient alternative to fixed-capacity glass containers for laboratory scale silage experiments.
      PubDate: Sat, 23 Jul 2022 00:00:00 +030
       
  • The Role of Short-Term Storage on Physicochemical Quality of Black Garlic
           Bulbs and Peeled Cloves

    • Authors: Selen AKAN
      Abstract: Black garlic is produced by fermentation of raw garlic under controlled conditions with high humidity and temperature. To date, many studies have been carried out on processing technology of black garlic but little is known about the storage conditions, which are the main indicators for affecting food quality of black garlic. Also knowing proper storage conditions of black garlic is essential to meet the requirements of global and domestic markets. Therefore, the research aimed to determine the effects of short-term storage periods (21 days) on the physicochemical quality of bulbs and peeled cloves of black garlic during storage at 4 °C and 55-70% relative humidity in the kraft paper bags. During the storage period, soluble solids content, pH, browning intensity (L*), color (a*, b*), titratable acidity (citric and lactic acid), water activity, antioxidant capacity, and total phenolic content were analyzed. As a result, the storage as black garlic bulbs had a positive effect on pH, color (a*), lactic and citric acid. Moreover, antioxidant capacity and total phenolic content were maintained in stored black garlic bulbs during storage period. Storage as peeled clove was only effective on color b* value. In general, this research demonstrated that short-term storage under conducted conditions did not lead to detrimental changes in physicochemical attributes of black garlic. More studies are needed to explain the effects of different storage conditions on the quality of black garlic.
      PubDate: Sat, 23 Jul 2022 00:00:00 +030
       
  • The Effect of Different Salt Concentrations on Germination and Emergence
           of Some Safflower (Carthamus tinctorius L.) Variety

    • Authors: Mustafa KURTULUŞ; Erkan BOYDAK
      Abstract: This study was carried out to determine the response of some safflower varieties to salt stress during germination and emergence it was conducted in 2018. Asol, Balcı, Dinçer, Linas and Olas varieties were used as material. In the study; 3 different doses of NaCl pure water (control), 100 mM, 200 mM and 300 mM) was applied to safflower seed during germination and emergenge. Germination experiment was carried out in climate cabinet (25 °C) in the petri dishes according to the arrangement of factorial experiments in random plots with 4 replictions. Emergence experiments were carried out in the climate cabinet (25 °C) in the plastic cups field with peat (3/4), pearlite (1/4) mixture.As a result; germination rate of safflower varieties 69-100%, sensitivity index 1.00-1.67, emergence rate 5.00-97.50, seedling lenght 13.4-115.9 mm, fresh seedling weight 0.077-0.476 g fresh root weight 0.110-0.161 g and salt tolerance percentage is determined between 11.4-28.6. Also In the experiment, mean germination time (day), germination index, mean emergence time (day), root length (mm), dry seedling weight (g), dry root weight (g), and emergence index properties examined. Depending on the increase in salt concentrations, germination time, (day) sensitivity index and emergence time (day) values increased significantly. and germination index, emergence rate, seedling length, (mm) root lenght, (mm) fresh seedling weight, (g) fresh root weight, (g) dry seedling weight, (g) dry root weight, (g) salt tolerance percentage (%) and emergence index values decreased significantly.
      PubDate: Sat, 23 Jul 2022 00:00:00 +030
       
  • No title

    • Authors: Yeşim AYTOP; Semiha ÇETİNKAYA, Uğur HANOĞLU
      PubDate: Sat, 23 Jul 2022 00:00:00 +030
       
  • Anatomical and Palynological Characteristics of Endemic Fritillaria
           gencensis Yıld., Kılıç & A.Demirpolat

    • Authors: Azize DEMİRPOLAT
      Abstract: This study was carried out to determine the anatomical and palynological features of Fritillaria gencensis, a new species found in Turkey. Since endemic F. gencensis is a new species, no previous systematic research has been conducted on this species. In this study, the anatomical and palynological features of F. gencensis were evaluated to define the species in more detail. Anatomical examinations were made on the surface section of leaf and stem. In the trunk cross-section, the cortex cells are 3-7 layers. These cells are thin, parenchymal and have little or no intercellular spaces. 1-2 rows of collenchyma cells are seen below the cortex. In the upper and lower superficial sections taken from the leaf, the stomata index was 49.88% in the upper epidermis and 48.66% in the lower epidermis. Stomata are of the anomocytic type because there are no specific types of adjacent cells surrounding the stomata. As a result of palynological studies, the average of the polar axis, which is the long axis of the pollen, was 34.38 m, the equatorial axis was 24.23 m and the average thickness of the exine was 1.25 m. Pollen shape was prolate. Pollen ornamentation was reticulated. In this study, the anatomical and palynological features of the morphologically new F. gencensis species were determined and the differences supported by anatomy and pollen studies.
      PubDate: Sat, 23 Jul 2022 00:00:00 +030
       
  • No title

    • Authors: Hasibe YILDIZ; Selçuk BİNİCİ, Bekir ŞAN, Fatma YILDIRIM, İsa TELCİ
      PubDate: Sat, 23 Jul 2022 00:00:00 +030
       
  • No title

    • Authors: Turgay ŞENGÜL; Şenol ÇELİK, Ömer ŞENGÜL
      PubDate: Sat, 23 Jul 2022 00:00:00 +030
       
  • The Long-Term Volatility Spillovers Between Egg and Feed Wheat Prices
           During the COVID-19 Pandemic in Turkey

    • Authors: Nihat KÜÇÜK; Faruk URAK, Gürkan BOZMA, Abdulbaki BİLGİC
      Abstract: Having spread all over the world and become effective in a very short period, COVID-19 has brought about negative effects on food supply and demand by breaking all supply chains. This study aims to determine the long-term volatility spillovers between egg and feed wheat markets in Turkey by using an exchange rate and COVID-19 as exogenous variables as well as to investigate whether these spillovers are asymmetric. The daily market data between 2010:01 and 2022:03 and the Asymmetric BEKK-GARCH (1, 1) model were used for the study . We determined that the conditional variances of egg and feed wheat return series are positively affected by both their shocks in the short run and their uncertainties in the long run. The conditional variances of egg and feed wheat return series were observed to have been positively affected by the uncertainties arising from the exchange rate in the long run, while they were negatively affected by the volatility caused by COVID-19. The depreciation of the Turkish Lira caused a reciprocating increase in the price levels of imported products, such as oil and derivatives, and of feed products which constitute a very important part of egg production costs. The increase in egg production costs, in return, consistently triggered egg prices upwards (with positive returns), causing an increase in uncertainty in the long run. This research provides a perspective for developing policy recommendations for food security if global food supply chains are broken due to any pandemic or a similar crisis (such as the Russia-Ukraine war).
      PubDate: Sat, 23 Jul 2022 00:00:00 +030
       
 
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