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Articles 1 - 30 of 49
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Genetic Transformation Of Citrus Paradisi With Antisense And Untranslatable Rna-Dependent Rna Polymerase Genes Of Citrus Tristeza Closterovirus, Bayram Çevi̇k, Richard F. Lee, Charles L. Niblett
Genetic Transformation Of Citrus Paradisi With Antisense And Untranslatable Rna-Dependent Rna Polymerase Genes Of Citrus Tristeza Closterovirus, Bayram Çevi̇k, Richard F. Lee, Charles L. Niblett
Turkish Journal of Agriculture and Forestry
Protein and RNA-mediated forms of pathogen-derived resistance (PDR) have been developed against many viruses in different plants. However, no resistance has been reported against Citrus tristeza virus (CTV), a closterovirus, in Citrus species transformed with coat protein genes or other sequences of CTV. The successful use of replication-associated genes in RNA-mediated resistance in other crops prompted the use of the RNA-dependent RNA polymerase (RdRp) gene of CTV for the development of RNA-mediated PDR in Citrus. The RdRP gene was amplified from CTV isolate DPI3800 from Florida and used to generate antisense (RdRp-AS) and untranslatable (RdRp-UT) constructs with point mutation consecutive …
Impact Of Impregnation With Imersol-Aqua On The Yellow Color Tone Of Some Woods And Varnishes, Mustafa Hi̇lmi̇ Çolakoğlu
Impact Of Impregnation With Imersol-Aqua On The Yellow Color Tone Of Some Woods And Varnishes, Mustafa Hi̇lmi̇ Çolakoğlu
Turkish Journal of Agriculture and Forestry
This study was performed to determine the effects of impregnation on the yellow color tone (YCT) of some woods and varnishes. For this purpose, the test specimens prepared from Oriental beech (Fagus orientalis Lipsky) and oak (Quercus petrea Liebl.) according to ASTM D 358 were impregnated with Imersol-Aqua according to ASTM D 1413-99 and the manufacturer's instructions by short-term, medium-term, and long-term dipping, and were then coated with synthetic, acrylic, waterborne, and polyurethane varnishes according to ASTM D 3023. The YCT of test specimens after the varnishing process was determined according to ASTM D 2244-02. As a result, the highest …
Determination Of The Apomictic Fruit Set Ratio In Some Turkish Walnut (Juglans Regia L.) Genotypes, Beki̇r Şan, Hati̇ce Dumanoğlu
Determination Of The Apomictic Fruit Set Ratio In Some Turkish Walnut (Juglans Regia L.) Genotypes, Beki̇r Şan, Hati̇ce Dumanoğlu
Turkish Journal of Agriculture and Forestry
This study was carried out to determine the amount of apomictic fruit set in 10 Turkish walnut (Juglans regia L.) genotypes in 2001, 2002 and 2003. Yalova-1, Şebin, Bilecik, KR-1, KR-2, Şen-2, 07-KOR-l, Tokat-1, Kaman-1 and Kaman-5 cultivars and selections were used in the experiment. Female flowers were bagged and/or pollinated with pollen of the apple cv. 'Golden Delicious' (Malus x domestica Borkh.), and the apomictic fruit set was determined 8 weeks after anthesis. The percentage of apomictic fruit set without pollination ranged from 0.5% to 1.6% in 5 walnut genotypes, namely Yalova-1, Bilecik, 07-KOR-l, Tokat-1 and Kaman-1, in the …
Deficit Irrigation Analysis Of Red Pepper (Capsicum Annum L.) Using The Mathematical Optimisation Method, Cafer Gençoğlan, Serpi̇l Gençoğlan, Cuma Akbay, İsmet Boz
Deficit Irrigation Analysis Of Red Pepper (Capsicum Annum L.) Using The Mathematical Optimisation Method, Cafer Gençoğlan, Serpi̇l Gençoğlan, Cuma Akbay, İsmet Boz
Turkish Journal of Agriculture and Forestry
The objectives of this study were to analyse deficit irrigation with the mathematical optimisation method using the water-yield relationship and cost functions of red pepper, and to determine alternative deficit irrigation water levels. For this purpose, the effect of 5 different irrigation levels (I_1, I_2, I_3, I_4, and I_5) on dry yield (DY) was determined using a line source sprinkler irrigation system in Kahramanmaraş, Turkey in 1999 and 2000. The average water amounts applied with I_1 (non-water stress treatment) and I_5 (water stress treatment) for the 2 years were 913 and 296 mm, and I_2, I_3, and I_4 varied between …
Effects Of Different Nitrogen Doses And Row Spacing Applications On Yield And Quality Of Oenothera Biennis L. Grown In Irrigated Lowland And Unirrigated Dryland Conditions, Nazim Şekeroğlu, Menşure Özgüven
Effects Of Different Nitrogen Doses And Row Spacing Applications On Yield And Quality Of Oenothera Biennis L. Grown In Irrigated Lowland And Unirrigated Dryland Conditions, Nazim Şekeroğlu, Menşure Özgüven
Turkish Journal of Agriculture and Forestry
Common evening primrose (Oenothera biennis L., Onagraceae) is a biennial herbaceous forb. It is commercially cultivated in over 15 countries for its seed oil, which contains the essential fatty acids, linoleic and gamma-linolenic acid. The present study was carried out to determine the effects of different nitrogen doses (0, 60, 120 and 180 kg ha^{-1}) and row spacing applications (20, 40 and 60 cm) on yield and quality of Oenothera biennis L. grown in irrigated lowland and unirrigated dryland in the Gukurova conditions region in 2000 and 2001. The field trials were arranged in split-split-plot design with 3 replicates. Some …
Saturated Hydraulic Conductivity Variation In Cultivated And Virgin Soils, Teki̇n Özteki̇n, Sabi̇t Erşahi̇n
Saturated Hydraulic Conductivity Variation In Cultivated And Virgin Soils, Teki̇n Özteki̇n, Sabi̇t Erşahi̇n
Turkish Journal of Agriculture and Forestry
Variation of saturated hydraulic conductivity (K_s) values of soils under diverse management practices may be needed to determine the required sample number, sample size, and chose suitable sample scheme for characterize the K_s values used in water flow and solute transport modelling studies. The purpose of this study was to examine the variability in K_s and try to understand some part of the determinism of this variability in virgin and adjacent cultivated field using 36 undisturbed soil samples from each location with 0.5-m grid space. K_s was measured with 100 cm^3 undisturbed soil cores in laboratory using falling or constant …
Genotypic Variation In Tolerance To Boron Toxicity In 70 Durum Wheat Genotypes, Ayfer A. Torun, Ati̇lla Yazici, Hali̇l Erdem, İsmai̇l Çakmak
Genotypic Variation In Tolerance To Boron Toxicity In 70 Durum Wheat Genotypes, Ayfer A. Torun, Ati̇lla Yazici, Hali̇l Erdem, İsmai̇l Çakmak
Turkish Journal of Agriculture and Forestry
By using 70 durum wheat (Triticum durum) genotypes, a greenhouse experiment has been carried out to study genotypic variation in tolerance to boron (B) toxicity in soil. Plants were grown in a soil containing 12 mg extractable B kg^{-1} soil and treated additionally with (+B: 25 mg kg^{-1} soil) and without B (-B: 0 mg B kg^{-1} soil). Following 30 days of growth, only shoots have been harvested and analyzed for dry matter production and shoot concentrations of B. There was a large genotypic variation in tolerance to B toxicity based on the severity of leaf symptoms and decreases in …
Developing Alternative Wood Harvesting Strategies With Linear Programming In Preparing Forest Management Plans, Emi̇n Zeki̇ Başkent, Sedat Keleş
Developing Alternative Wood Harvesting Strategies With Linear Programming In Preparing Forest Management Plans, Emi̇n Zeki̇ Başkent, Sedat Keleş
Turkish Journal of Agriculture and Forestry
In this paper, the process of developing alternative wood harvesting strategies in forest management planning is presented. Alternative wood harvesting strategies based on linear programming (LP) include a planning horizon of 100 years, an objective of the maximization of net present value (NPV) and various constraints such as classical volume control (even flow) and wood assortments. Model outputs are presented and discussed along with NPVs and amounts of wood assortments by alternative wood harvesting strategies consisting of various discount rates and wood assortments.
Effect Of Sowing Date And Limited Irrigation On The Seed Yield And Quality Of Dill (Anethum Graveolens L.), Saeid Zehtab-Salmasi, Kazem Ghassemi-Golez, Sajad Moghbeli
Effect Of Sowing Date And Limited Irrigation On The Seed Yield And Quality Of Dill (Anethum Graveolens L.), Saeid Zehtab-Salmasi, Kazem Ghassemi-Golez, Sajad Moghbeli
Turkish Journal of Agriculture and Forestry
Field and laboratory experiments were carried out in order to investigate the influence of 3 sowing dates and 4 irrigation disruption treatments at different growth stages on the seed yield and quality of dill (Anethum graveolens L.). The results showed that for successful seed production dill must be sown in early spring (3 to 18 April), since there was no significant difference in seed yield between the sowing dates of 3 April (S_1) and 18 April (S_2). Seeds from S_1 sowing had a higher percentage of germination after accelerated ageing (AA), a faster germination rate and a heavier seedling dry …
Use Of A Crop Water Stress Index For Scheduling The Irrigation Of Sunflower (Helianthus Annuus L.), Tolga Erdem, Yeşi̇m Erdem, A. Hali̇m Orta, Hakan Okursoy
Use Of A Crop Water Stress Index For Scheduling The Irrigation Of Sunflower (Helianthus Annuus L.), Tolga Erdem, Yeşi̇m Erdem, A. Hali̇m Orta, Hakan Okursoy
Turkish Journal of Agriculture and Forestry
This study was designed to evaluate different threshold crop water stress index (CWSI) values to schedule irrigation for sunflower (Helianthus annuus L.) grown under furrow irrigation. Irrigations were started when CWSI values reached 0.2, 0.4, 0.6, 0.8 and 1.0 (non-irrigation). The CWSI values were computed from measurements of canopy temperature, air temperature and atmospheric vapor pressure deficit. Total irrigation water amounts of 679, 584, 470 and 227 mm were applied to the T_{0.2}, T_{0.4}, T_{0.6} and T_{0.8} treatments, respectively. The maximum seasonal evapotranspiration (ET), 809 mm was measured from the T_{0.2} treatment. Irrigation levels significantly affected seed yield. Although the …
Effects Of Nacl On The Germination, Seedling Growth And Water Uptake Of Triticale, Mehmet Atak, Mehmet Demi̇r Kaya, Gamze Kaya, Yakup Çikili, Cemaletti̇n Yaşar Çi̇ftçi̇
Effects Of Nacl On The Germination, Seedling Growth And Water Uptake Of Triticale, Mehmet Atak, Mehmet Demi̇r Kaya, Gamze Kaya, Yakup Çikili, Cemaletti̇n Yaşar Çi̇ftçi̇
Turkish Journal of Agriculture and Forestry
The lack of information about the effects of salinity on vegetative growth of triticale prompted us to study the salt tolerance levels of 3 newly registered cultivars, Karma-2000, Presto, and Tatlıcak-97. Moreover, the relative importance of the osmotic or toxic effects of NaCl on seed germination are not clear in triticale. In this study, germination percentage, seedling fresh and dry weight and water uptake of the seeds of 3 triticale cultivars were determined under various salt (NaCl) stresses with electrical conductivities of 2.4, 4.2, 5.9, 7.7, 10.6 and 13.2 dS m^{-1}. Roots and shoots were analyzed for uptake of Na^+ …
Study On Vertical And Lateral Leaching Of Nitrate From A Wheat Field In China, Md. Toufiq Iqbal
Study On Vertical And Lateral Leaching Of Nitrate From A Wheat Field In China, Md. Toufiq Iqbal
Turkish Journal of Agriculture and Forestry
Vertical and lateral leaching of nitrate from a wheat field was studied through one season in a field in China by applying increasing amount of N fertilizers (e.g. 90, 180, 270 and 360 kg ha^{-1}). Results showed that nitrate leaching was the dominating way of nitrate loss from wheat land during the first two month after sowing seeds. After irrigation, the nitrate concentration in the leachate of 30 cm soil layer was higher than that of 60 cm, while the concentration of nitrate leaching at the five N treatments through the two depth soil layer came into the same level …
The Effect Of Tying And Wrapping Materials And Their Color On Budding Success In Kiwifruit, Hamdi̇ Zengi̇nbal, Hüseyi̇n Çeli̇k, Muharrem Özcan
The Effect Of Tying And Wrapping Materials And Their Color On Budding Success In Kiwifruit, Hamdi̇ Zengi̇nbal, Hüseyi̇n Çeli̇k, Muharrem Özcan
Turkish Journal of Agriculture and Forestry
We studied the effect of tying and wrapping materials and their color on budding success in kiwifruit. The work was done in the open field during 2002-2003. Three-year-old, gallon container grown Hayward seedlings were chip-budded with Hayward chip-bud sticks in the first quarter of May. Raffia (black), cannabis fiber, leathery polyethylene band (white), soft rubbery polyethylene tape (white), paper tape, cotton yarn and plastic string (white) were used as tying and wrapping material in the first experiment. Green, red, black and white raffia was used as wrapping material in the second experiment. In the first trial, the soft rubbery plastic …
The Replication Of The Purple-Flowered Rhododendron (Rhododendron Ponticum L.) By Seed And Chances Of Survival In Replanting In Different Media, Mustafa Var, Deryanur Di̇nçer
The Replication Of The Purple-Flowered Rhododendron (Rhododendron Ponticum L.) By Seed And Chances Of Survival In Replanting In Different Media, Mustafa Var, Deryanur Di̇nçer
Turkish Journal of Agriculture and Forestry
This study investigates the germination, replanting and survival of Rhododendron ponticum, a species native to Turkey, in different media. The conditions of the germination medium were first investigated and the seedlings obtained were applied as a first replicate in a peat medium, and at the end of 4 months a second replicate in 7 different media was used to examine their development and survival in these media. The data obtained were then compared to the data obtained from soil analysis and their relations were outlined along with statistical considerations. According to the findings, an efficient germination was observed when the …
Potassium Exchange Isotherms As A Plant Availability Index In Selected Calcareous Soils Of Western Azarbaijan Province, Iran, Abbas Samadi
Potassium Exchange Isotherms As A Plant Availability Index In Selected Calcareous Soils Of Western Azarbaijan Province, Iran, Abbas Samadi
Turkish Journal of Agriculture and Forestry
Potassium (K) exchange isotherms (quantity-intensity technique, Q/I) and K values derived from the Q-I relationship provide information about soil K availability. This investigation was conducted to study the relationships among K Q/I parameters, available K extracted by 1 N NH_4AOc (exchangeable K plus solution K), potassium saturation percentage (K-index, %), and the properties of 6 different calcareous agricultural soils. In addition, the relationship of tomato plant yield response to the K requirement test based on K exchange isotherms was investigated. The Q/I parameters included readily exchangeable K (\DeltaK^0), specific K sites (K_X), linear potential buffering capacity (PBC^K), and energy of …
Determination Of Crop Water Stress Index For Irrigation Scheduling Of Bean (Phaseolus Vulgaris L.), Yeşi̇m Erdem, Sezen Şehi̇rali̇, Tolga Erdem, Di̇nçer Kenar
Determination Of Crop Water Stress Index For Irrigation Scheduling Of Bean (Phaseolus Vulgaris L.), Yeşi̇m Erdem, Sezen Şehi̇rali̇, Tolga Erdem, Di̇nçer Kenar
Turkish Journal of Agriculture and Forestry
This study was conducted to determine the relationship between the canopy-air temperature differential and the vapor pressure deficit (VPD), which can be used to quantify the crop water stress index (CWSI) under fully irrigated (100%) and maximum water stress (0%) conditions of trickle irrigated bean. The effects of 5 irrigation levels (100%, 75%, 50%, 25%, and 0% replenishment of soil water depleted when 50% of available soil moisture was consumed in the 0.60 m soil profile depth of fully irrigated treatment) on seed yields and resulting CWSIs calculated using the empirical approach were also investigated. The highest yield and water …
Changes In Some Quality Parameters Of The Perfect Delight Nectarine Cultivar During Cold Storage And Shelf Life, Murat Çeli̇k, Ahmet Erhan Özdemi̇r, Eli̇f Ertürk
Changes In Some Quality Parameters Of The Perfect Delight Nectarine Cultivar During Cold Storage And Shelf Life, Murat Çeli̇k, Ahmet Erhan Özdemi̇r, Eli̇f Ertürk
Turkish Journal of Agriculture and Forestry
The objective of this study was to determine storage and shelf life periods of Perfect Delight nectarines grown in Mersin (Yenice, Tarsus). The fruit was kept at 0 °C and 85%-90% relative humidity for 8 weeks. After removal from cold storage at weekly intervals, the fruit was kept at 20 °C and 65%-70% relative humidity for 2, 4 or 6 days to determine shelf life in 3 replicates. Changes in weight loss (%), fruit skin color and flesh color (L*, a*, b*), fruit flesh firmness (N), total soluble solids (%), titratable acidity (g malic acid / 100 ml fruit juice), …
Agronomic Potential And Industrial Value Of Madder (Rubia Tinctorum L.) As A Dye Crop, Hasan Baydar, Tahsi̇n Karadoğan
Agronomic Potential And Industrial Value Of Madder (Rubia Tinctorum L.) As A Dye Crop, Hasan Baydar, Tahsi̇n Karadoğan
Turkish Journal of Agriculture and Forestry
Madder (Rubia tinctorum L.) is a valuable dye crop due to its roots, which are rich in anthraquinone pigments, one of them being alizarin. This study aimed to evaluate the agronomic potential and industrial value of madder plants under rainfed conditions in Southwest Anatolia, Turkey. Three different propagation materials (seeds, seedlings and root cuttings), and 5 different propagation methods (autumn root transplanting, spring root transplanting, autumn seed sowing, spring seed sowing, and spring seedling transplanting) were used in the study. At the end of the 3-year growing period, fresh root yield varied from 1640.1 kg ha^{-1} (in the spring root …
Gge-Biplot Analysis Of Multi-Environment Yield Trials In Bread Wheat, Yüksel Kaya, Mevlüt Akçura, Seyfi̇ Taner
Gge-Biplot Analysis Of Multi-Environment Yield Trials In Bread Wheat, Yüksel Kaya, Mevlüt Akçura, Seyfi̇ Taner
Turkish Journal of Agriculture and Forestry
Yield data of 25 bread wheat genotypes tested across 9 rain-fed environments during the 2002-2003 growing season were analyzed using the GGE (i.e. G, genotype + GEI, genotype-by-environment interaction) biplot method. E (environment) explained 81% of the total (G + E + GE) variation, whereas G and GEI captured 7.3% and 11.7%, respectively. The first 2 principal components (PC1 and PC2) were used to create a 2-dimensional GGE-biplot and explained 46.2% and 15.8% of GGE sum of squares (SS), respectively. Genotypic PC1 scores >0 detected the adaptable and/or higher-yielding genotypes, while PC1 scores
Inheritance Of Grain Yield Per Plant, Flag Leaf Width, And Length In An 8 X 8 Diallel Cross Population Of Bread Wheat (T. Aestivum L.), Şahi̇n Dere, Meti̇n Bi̇rkan Yildirim
Inheritance Of Grain Yield Per Plant, Flag Leaf Width, And Length In An 8 X 8 Diallel Cross Population Of Bread Wheat (T. Aestivum L.), Şahi̇n Dere, Meti̇n Bi̇rkan Yildirim
Turkish Journal of Agriculture and Forestry
The inheritance of grain yield per plant, flag leaf width, and flag leaf length was studied applying Jinks-Hayman diallel analysis in an 8 x 8 wheat cross population involving the bread wheat (T. aestivum L.) genotypes Cumhuriyet, Kaşifbey, Ziyabey, Marmara, Basribey, Malabadi, Yüreğir, and Seri-82. The crosses were made by hand, without reciprocals, in field conditions from March to May 2001, and the field experiment was conducted during the October 2002 to June 2003 growing season. The analysis of data showed that the additive variance component (D) was significant for flag leaf width (P < 0.01). The dominance variance component (H_1) was significant for flag leaf width and grain yield per plant. The dominance level variance component (h^2) and corrected dominance variance component (H_2) were significant for all 3 traits studied (P < 0.01). The Wr/Vr graphs indicated overdominance for grain yield per plant and flag leaf width, while partial dominance was inferred for flag leaf length. Flag leaf length was significantly and positively correlated with flag leaf width (r = 0.803). Yüreğir x Malabadi crosses should be considered for maximizing photosynthetic area of the leaf.
Clonal Selection Of A Winter-Type European Pear Cultivar 'Ankara' (Pyrus Communis L.), Hati̇ce Dumanoğlu, Nurdan Tuna Güneş, Veli̇ Erdoğan, Ahmet Aygün, Beki̇r Şan
Clonal Selection Of A Winter-Type European Pear Cultivar 'Ankara' (Pyrus Communis L.), Hati̇ce Dumanoğlu, Nurdan Tuna Güneş, Veli̇ Erdoğan, Ahmet Aygün, Beki̇r Şan
Turkish Journal of Agriculture and Forestry
Clones of the 'Ankara' pear (Pyrus communis L.) cultivar, which is a winter-type of European pear, were investigated in terms of morphological and chemical characteristics, and sensory analyses, in the Ankara (Turkey) region in 2001, 2002, and 2003. Fruit weight, length, and diameter; core diameter; skin and flesh color; flesh firmness; soluble solids content; titrable acidity; pH; grittiness; melting degree in the mouth (buttery flesh); flavor; texture; and appearance were determined in 40, 17, and 26 clones in 2001, 2002, and 2003, respectively. Two clones #5 and #6, were selected as superior clones of 'Ankara' pear in 16 clones, which …
A Comparison Of The Development Times Of Trissolcus Rufiventris (Mayr) And Trissolcus Simoni Mayr (Hym.: Scelionidae) At Three Constant Temperatures, Müjgan Kivan, Ni̇hal Kiliç
A Comparison Of The Development Times Of Trissolcus Rufiventris (Mayr) And Trissolcus Simoni Mayr (Hym.: Scelionidae) At Three Constant Temperatures, Müjgan Kivan, Ni̇hal Kiliç
Turkish Journal of Agriculture and Forestry
The effects of temperature on the development of the egg parasitoids Trissolcus rufiventris (Mayr) and Trissolcus simoni Mayr (Hym.: Scelionidae) were determined at 3 constant temperatures. Female development ranged from 6.9 days at 32 °C to 22.5 days at 20 °C for T. rufiventris, and from 9.2 days at 32 °C to 24.7 days at 20 °C for T. simoni. The average development time of males was shorter than that of females for each parasitoid species. The development of female T. rufiventris required 125.0 degree-days above the theoretical threshold of 15.5 °C and that of males required 111.1 degree-days above …
Agro-Morphological Characterization Of Some Wild Wheat (Aegilops L. And Triticum L.) Species, Alpteki̇n Karagöz, Necmi̇ Pi̇lanali, Turgay Polat
Agro-Morphological Characterization Of Some Wild Wheat (Aegilops L. And Triticum L.) Species, Alpteki̇n Karagöz, Necmi̇ Pi̇lanali, Turgay Polat
Turkish Journal of Agriculture and Forestry
Wild wheat (Aegilops L. and Triticum L.) populations were collected from different regions of Turkey and characterized for 5 basic traits, in order to study their agro-morphological characteristics and variation among populations. Material of the study consisted of 112 populations of wild wheat and 12 populations of cultivated wheat. Cultivated einkorn (T. monococcum L. subsp. monococcum) and cultivated emmer (T. turgidum L. subsp. dicoccon (Shrank) Thell.) were used as checks for Triticum species. Among the Aegilops material studied, Ae. tauschii Coss. var. meyeri (Griseb. ex Ledeb.) has not been defined in the flora of Turkey before and is characterized agromorphologically …
Inheritance Of Cold Tolerance In Common Wheat (Triticum Aestivum L.), Omid Sofalian, Seyyed Abolghasem Mohammadi, Saeid Aharizad, Mohammad Moghaddam, Mohammad Reza Shakiba
Inheritance Of Cold Tolerance In Common Wheat (Triticum Aestivum L.), Omid Sofalian, Seyyed Abolghasem Mohammadi, Saeid Aharizad, Mohammad Moghaddam, Mohammad Reza Shakiba
Turkish Journal of Agriculture and Forestry
Low temperature is one of the most severe abiotic stresses limiting wheat growth, productivity, and distribution. Understanding the genetic nature of cold and frost tolerance is regarded as the primary step in wheat breeding programs. This study used a winter wheat cultivar, Norstar, which has a high level of cold tolerance (LT_{50} = -22.3 ºC), and a highly cold-susceptible Iranian spring wheat variety, Zagros (LT_{50} = -3.5 °C), as parental lines to develop different generations. Seven generations, P_1, P_2, F_1, F_2, F_{2:3}, BC_1, and BC_2, were used for generation mean and generation variance analysis for estimating genetic effects and variances, …
Use Of Remote Sensing And Geographic Information System Technologies For Developing Greenhouse Databases, Namik Kemal Sönmez, Mustafa Sari
Use Of Remote Sensing And Geographic Information System Technologies For Developing Greenhouse Databases, Namik Kemal Sönmez, Mustafa Sari
Turkish Journal of Agriculture and Forestry
This model study was conducted in Antalya region greenhouses for the determination and registration of agricultural resources as a part of adjustment efforts for the European Union (EU) Common Agricultural Policy (CAP). The aim was to create new database systems based on remote sensing (RS) and geographic information systems (GIS), rather than conventional land measurement techniques. For this purpose, glass and plastic greenhouses were determined by visual data analysis of satellite image, and databases were created for each greenhouse by GIS. These databases included area, coordinates and other characteristics of each greenhouse. These databases were prepared in a format that …
Integrated Weed Control In Sugar Beet Through Combinations Of Tractor Hoeing And Reduced Dosages Of A Herbicide Mixture, Riza Kaya, Şevki̇ Buzluk
Integrated Weed Control In Sugar Beet Through Combinations Of Tractor Hoeing And Reduced Dosages Of A Herbicide Mixture, Riza Kaya, Şevki̇ Buzluk
Turkish Journal of Agriculture and Forestry
Weed control is performed by hand in 83% of the sugar beet growing area in Turkey. Due to the movement of the labour force to industry recently, the lack of labour has led to a huge problem. Therefore, the completely mechanised alternative methods must be introduced into the weed control of sugar beet. In this study, the effects of alternative control methods, based on the use of a tractor hoe combined with post-emergence reduced herbicide dosages, on weeds and on the yield and quality of sugar beet were investigated. Our data indicated that tractor hoeing twice + thinning (96.2%) resulted …
Detection Of Four Apple Viruses By Elisa And Rt-Pcr Assays In Turkey, Kadri̇ye Çağlayan, Çi̇ğdem Ulubaş Serçe, Mona Gazel, Wilhelm Jelkmann
Detection Of Four Apple Viruses By Elisa And Rt-Pcr Assays In Turkey, Kadri̇ye Çağlayan, Çi̇ğdem Ulubaş Serçe, Mona Gazel, Wilhelm Jelkmann
Turkish Journal of Agriculture and Forestry
Plant samples were collected from the main apple growing provinces of Turkey in order to evaluate the incidence of 4 important apple virus diseases during spring 2004. Collected leaves and shoots were tested using enzyme linked immunosorbent assay (ELISA) and reverse transcription polymerase chain reaction (RT-PCR) for Apple mosaic virus (ApMV), Apple stem grooving virus (ASGV) and Apple chlorotic leaf spot virus (ACLSV). Since no commercial antiserum is available, Apple stem pitting virus (ASPV) was tested only using RT-PCR and the results were compared. A total of 174 apple samples were collected from varietal collections belonging to governmental and university …
Comparing The Performances Of Real-Time Kinematic Gps And A Handheld Gps Receiver Under Forest Cover, Hayati̇ Zengi̇n, Ahmet Yeşi̇l
Comparing The Performances Of Real-Time Kinematic Gps And A Handheld Gps Receiver Under Forest Cover, Hayati̇ Zengi̇n, Ahmet Yeşi̇l
Turkish Journal of Agriculture and Forestry
In forestry, to facilitate re-finding, especially permanent sample plots or some sample points in forest inventory for control, precise position information is needed. Various techniques are used to increase the performance of basic GPS (Global Positioning System) measurements and to achieve more accurate positioning. These techniques are based on the principles of relative positioning, for which 2 or more receivers are used generally. For a forest inventory, the corrected coordinates should be provided in the field and at the moment of measurement. Therefore, real-time measurements are required. The cost of GPS receivers used for sensitive measurements through relative positioning techniques …
Multiple Criteria Activity Selection For Ecotourism Planning In Igneada, Kenan Ok
Multiple Criteria Activity Selection For Ecotourism Planning In Igneada, Kenan Ok
Turkish Journal of Agriculture and Forestry
Forests have many ecotourism attractions. Ecotourism can be defined as an opportunity to promote the values in the protected areas and to finance for related stakeholders. However, ecotourism can be classified as a possible threat to ecosystems because of ecotourism's attractions are based on fragile ecological relations. Activity selection regarding ecological, social and economic dimensions is important in forest and tourism management. Ecotourism activities were selected using a multi-criteria decision model based on an ELECTRE method. The model that was applied with a participatory approach consists of 19 alternates and 28 criteria. While horse-riding was determined to be the best …
Genetic Variability, Correlation And Path Analysis Of Yield, And Yield Components In Chickpea (Cicer Arietinum L.), Derya Özveren Yücel, Adem Emi̇n Anlarsal, Celal Yücel
Genetic Variability, Correlation And Path Analysis Of Yield, And Yield Components In Chickpea (Cicer Arietinum L.), Derya Özveren Yücel, Adem Emi̇n Anlarsal, Celal Yücel
Turkish Journal of Agriculture and Forestry
This study was conducted to determine variability, heritability, and correlations between yield and yield components in 15 kabuli chickpea (Cicer arietinum L.) genotypes for 2 years. Direct and indirect effects of yield components on seed yield per plant were investigated. Genotypic variance was the highest for 1000 seed weight, followed by seed number per plant. Broad-sense heritabilities ranged from 5.47% (days to flowering) to 51.66% (seed number per plant). Heritabilities for seed number, 1000 seed weight, and number of full pods were greater than those for the other traits. Positive and significant (P < 0.05) relationships were determined between seed yield per plant and plant height, first pod height, secondary branch, total pod, and number of full pods and seeds per plant. The path coefficient analysis based on seed yield per plant, as a dependent variable, revealed that all of the other traits, except days to flowering, first pod height, and total pod number, exhibited high positive direct effects. Number of seeds and full pods showed the highest direct influence with 47.49% and 44.73%, respectively. Therefore, this research suggests that seed and full pod numbers can be good selection criteria for improving seed yield per plant in kabuli winter chickpea.