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Articles 1471 - 1500 of 2171
Full-Text Articles in Life Sciences
Determining Combining Ability In Sunflower (Helianthus Annuus L.), Yalçin Kaya
Determining Combining Ability In Sunflower (Helianthus Annuus L.), Yalçin Kaya
Turkish Journal of Agriculture and Forestry
The experiments, involving 25 sunflower hybrids, were conducted in 3 locations in 2000 and 2001. These hybrids were evaluated for 4 important yield components (seed and oil yields, oil content and hull ratio) by combining ability. The experimental design was a randomized complete block design with 3 replications. Based on specific combining ability (SCA) analysis, the hybrid 2453-A x 2644-R was determined as the best hybrid in the experiment. The female lines 2453-A and 0704-A and the male lines R-1001 and 2644-R had higher seed and oil yield performances in this research. However, the 2644-R and 2280-R restorer and HA89-A …
Responses Of Irrigated Durum And Bread Wheat Cultivars To Boron Application In A Low Boron Calcareous Soil, Süleyman Soylu, Bayram Sade, Ali̇ Topal, Necdet Akgün, Sai̇t Gezgi̇n, Erdoğan Eşref Hakki, Mehmet Babaoğlu
Responses Of Irrigated Durum And Bread Wheat Cultivars To Boron Application In A Low Boron Calcareous Soil, Süleyman Soylu, Bayram Sade, Ali̇ Topal, Necdet Akgün, Sai̇t Gezgi̇n, Erdoğan Eşref Hakki, Mehmet Babaoğlu
Turkish Journal of Agriculture and Forestry
Cereals are sensitive to micronutrient problems. Central Anatolian soils show great variation with respect to both deficiency and toxicity of boron (B). Hence, screening of major wheat cultivars grown in the region with respect to their sensitivity to B is of great importance for the area. Six durum (Triticum durum L. cvs. Kızıltan-91, Ç-1252, Selçuklu-97, Kunduru-1149, Yılmaz-98 and Çakmak-79) and 6 bread (Triticum aestivum L. cvs., Gün-91, Kınacı-97, Göksu-99, Türkmen, Bezostaja-1 and Sultan-95) wheat cultivars were studied in field experiments for their responses to B application when grown in soils low in extractable B (0.19 mg B kg^{-1}) during the …
Antioxidant Activity Of Selected Fruits And Vegetables Grown In Turkey, Feryal Karadeni̇z, Hande Selen Burdurlu, Nuray Koca, Yeşi̇m Soyer
Antioxidant Activity Of Selected Fruits And Vegetables Grown In Turkey, Feryal Karadeni̇z, Hande Selen Burdurlu, Nuray Koca, Yeşi̇m Soyer
Turkish Journal of Agriculture and Forestry
Antioxidant activities of different fruits (apple, quince, grape, pear and pomegranate) and vegetables (potato, onion, spring onion, red radish and red cabbage) were determined. In addition, total phenolic and flavonoid contents of those samples were assessed. Among fruits, pomegranate had the highest (62.7%) antioxidant activity, followed by quince (60.4%), grape (26.6%), apple (25.7%) and pear (13.7%). The antioxidant activity of vegetables ranged from 40.8% (red cabbage) to 12.5% (onion). Total phenolic and flavonoid contents in fruits varied from 326 to 4306 mg of catechin kg^{-1} and from 282 to 2115 mg of catechin kg^{-1}, respectively. Those in vegetables ranged between …
The Effect Of The Number Of Blades And The Grain Size Of Abrasives In Planing And Sanding On The Surface Roughness Of European Black Pine And Lombardy Poplar, Erol Burdurlu, İlker Usta, Meli̇ha Ulupinar, Bora Aksu, T. Çağri Erarslan
The Effect Of The Number Of Blades And The Grain Size Of Abrasives In Planing And Sanding On The Surface Roughness Of European Black Pine And Lombardy Poplar, Erol Burdurlu, İlker Usta, Meli̇ha Ulupinar, Bora Aksu, T. Çağri Erarslan
Turkish Journal of Agriculture and Forestry
The effect of the number of blades and the abrasive grain size of sandpaper on the surface roughness in wood materials obtained from Lombardy poplar (Populus nigra L.) and European black pine (Pinus nigra A.) were examined. A total of 220 samples were prepared for this purpose. The samples were subjected to roughness measurements according to TS 6212 EN ISO 4288. The values obtained were statistically analyzed and the results were interpreted. The best results among the sanded surfaces in roughness were obtained with 180-grit sandpaper on tangential cut surfaces for Lombardy poplar and with 220-grit sandpaper on tangential cut …
Influence Of Salinity On Growth And Yield Attributes In Chickpea Cultivars, Ranju Singla, Neera Garg
Influence Of Salinity On Growth And Yield Attributes In Chickpea Cultivars, Ranju Singla, Neera Garg
Turkish Journal of Agriculture and Forestry
Seeds of 4 cultivars of chickpea (2 desi, CSG 8962 and DCP 92-3, and 2 kabuli, CSG 9651 and BG 267) were grown under 0, 4, 6 and 8 dS m^{-1} levels of salinity until maturity. Shoot and root dry weights, root shoot ratio and various yield parameters were evaluated under salinity at 40, 70 and 100 days after sowing. Salinity significantly reduced dry matter accumulation in both roots and shoots in all cultivars, though declension was more pronounced in BG 267 (kabuli) and DCP 92-3 (desi). Root growth was more adversely affected than shoot growth, which also had an …
Effects Of Salt And Drought Stresses On Germination And Seedling Growth Of Pea (Pisum Sativum L.), Gamze Okçu, Mehmet Demi̇r Kaya, Mehmet Atak
Effects Of Salt And Drought Stresses On Germination And Seedling Growth Of Pea (Pisum Sativum L.), Gamze Okçu, Mehmet Demi̇r Kaya, Mehmet Atak
Turkish Journal of Agriculture and Forestry
The effects of salt and drought stresses at the water potentials of -2, -4, -6 and -8 bars induced by NaCl and PEG 6000 (polyethylene glycol 6000) each, on germination and early seedling growth, were investigated for 3 pea cultivars (Bolero, Sprinter and Utrillo). Electrical conductivity (EC) values of the NaCl solutions were 4.5, 8.8, 12.7 and 16.3 dS m^{-1}. Germination percentage, mean germination time, root and shoot length, and seedling fresh and dry weight were measured in the study. The objective was to determine genotypic differences among pea cultivars in terms of salt and drought stress and to determine …
Apple Chlorotic Leaf Spot Virus (Aclsv) Status In Turkey And Sensitive Detection Using Advanced Techniques, Çi̇ğdem Ulubaş Serçe, Fi̇li̇z Ertunç
Apple Chlorotic Leaf Spot Virus (Aclsv) Status In Turkey And Sensitive Detection Using Advanced Techniques, Çi̇ğdem Ulubaş Serçe, Fi̇li̇z Ertunç
Turkish Journal of Agriculture and Forestry
The prevalence of apple chlorotic leaf spot virus (ACLSV) was investigated in all the main stone fruit growing areas of Turkey except for East Anatolia. Three hundred and sixty-nine plant samples showing virus related symptoms were collected from sweet and sour cherry, peach, nectarine, apricot and plum trees. All samples were tested using DAS-ELISA and reverse transcription-polymerase chain reaction (RT-PCR). Thirteen samples were detected as infected with ACLSV using ELISA while RT-PCR revealed 51 positive samples. The highest ACLSV incidence was in Bursa (64%), followed by Yalova (20.51%), Burdur (18.18%), Amasya (13.43%), Afyon (12.07%), Isparta (6.25%), Çanakkale (4.76%) and İzmir …
Control Of The Carmine Spider Mite Tetranychus Cinnabarinus Boisduval By The Predatory Mite Phytoseiulus Persimilis (Athias-Henriot) In Protected Strawberries In Aydın, Turkey, İbrahi̇m Çakmak, Hüseyi̇n Başpinar, Ni̇lgün Madanlar
Control Of The Carmine Spider Mite Tetranychus Cinnabarinus Boisduval By The Predatory Mite Phytoseiulus Persimilis (Athias-Henriot) In Protected Strawberries In Aydın, Turkey, İbrahi̇m Çakmak, Hüseyi̇n Başpinar, Ni̇lgün Madanlar
Turkish Journal of Agriculture and Forestry
The potential of the predatory mite Phytoseiulus persimilis (Acarina: Phytoseiidae) to control the carmine spider mite Tetranychus cinnabarinus (Acarina: Tetranychidae) on strawberries (cv. ´Camarosa`) grown under plastic tunnels was investigated in 2 fields during the 2001 and 2002 growing seasons in Aydın, Turkey. Three study plots, grower's practice, chemical control and biological control, were established. The population of T. cinnabarinus was controlled in the grower's practice plots by using 1 or 2 acaricide applications. However, it was suppressed with only 1 acaricide application in the chemical control plots at a population level below economic threshold levels. When the pest population …
Comparative Response Of Two Olive (Olea Europaea L.) Cultivars To Salinity, Mehmet Ali̇ Demi̇ral
Comparative Response Of Two Olive (Olea Europaea L.) Cultivars To Salinity, Mehmet Ali̇ Demi̇ral
Turkish Journal of Agriculture and Forestry
Two olive (Olea europaea L.) cultivars, Leccino and Barnea, were exposed to increasing concentrations of NaCl (control, 2560, 5120 and 7680 mg l^{-1} of NaCl, which is equal to 4.0 dS m^{-1}, 8.0 dS m^{-1} and 12.0 dS m^{-1} salinity) in a sand culture. Plants were harvested and separated into different organs. Thin root, thick root, shoot and leaves were analysed for Na^+, Cl^-, K^+, Ca^{+2} and Mg^{+2} contents. Dry weights of the plants were determined. Shoot elongation was also measured. Increasing NaCl inhibited growth of the plants. However, this effect was only statistically significant in Barnea. The growth of …
Regional Flood Frequency Analysis Of The Basins Of The East Mediterranean Region, Fati̇h Topaloğlu
Regional Flood Frequency Analysis Of The Basins Of The East Mediterranean Region, Fati̇h Topaloğlu
Turkish Journal of Agriculture and Forestry
Methods known as regional flood frequency analyses have often been used for providing records to be gathered and for determining different quantiles of flood in basins having an adequate runoff gauging station (RS) or no gauge. Regional flood frequency analyses including homogeneity test was applied to annual instantaneous peak flows of 50 RSs in 4 basins of the East Mediterranean region. Only 3 RSs were determined to be inhomogeneous. As a result, regional dimensionless flood frequency curves and variation of mean annual flood with drainage area were obtained. The determination coefficient of the mean annual flood prediction equation of the …
Evaluation Of Thermal Treatability Of Caucasian Fir (Abies Nordmanniana (Link.) Spach.) Treated With Heated Tanalith-C Of Cca Above And Below The Fibre Saturation Point, İlker Usta
Turkish Journal of Agriculture and Forestry
Caucasian fir (Abies nordmanniana (Link.) Spach.) was treated using the full-cell process with heated tanalith-C at elevated temperatures from 5 to 70 ºC above and below the fibre saturation point (FSP: 32.1%) (in 40% and 20% moisture content (MC) levels). Thermal treatability was determined on the basis of preservative uptake (the percentage of void volume filled, VVF%) in transverse flow (a combination of tangential and radial directions) and triplex flow (based on all 3 flow directions). To characterise the treatability, analysis of the coefficient of transverse thermal conductivity was also performed above and below the FSP. Thermal conductivity (Tc) increased …
Effects Of Stratification, Temperature And Storage On Germination In Three Provenances Of Fraxinus Angustifolia Subsp. Oxycarpa Seeds, Fahretti̇n Ti̇lki̇, Emrah Çi̇çek
Effects Of Stratification, Temperature And Storage On Germination In Three Provenances Of Fraxinus Angustifolia Subsp. Oxycarpa Seeds, Fahretti̇n Ti̇lki̇, Emrah Çi̇çek
Turkish Journal of Agriculture and Forestry
The effects of stratification, temperature and storage on seed germination performance were investigated in 3 provenances of Fraxinus angustifolia subsp. oxycarpa seeds. In the first study, seeds were subjected to 9 different periods of cold stratification or warm stratification followed by cold stratification to overcome dormancy. Stratification and provenances affected seed germination percentage (GP) and germination value (GV) when seeds were germinated in darkness at 30/20 ºC. Sixteen weeks' cold stratification (GP = 40.0, GV = 3.8), 4 weeks' warm stratification + 4 weeks' cold stratification (GP = 43.7, GV = 4.2) and 4 weeks' warm stratification + 8 weeks' …
Effects Of Different Water And Nitrogen Levels On The Yield And Periodicity Of Pistachio (Pistacia Vera L.), Mustafa Ünlü, Riza Kanber, Pasquale Steduto, Yusuf Aydin, Kenan Di̇ker
Effects Of Different Water And Nitrogen Levels On The Yield And Periodicity Of Pistachio (Pistacia Vera L.), Mustafa Ünlü, Riza Kanber, Pasquale Steduto, Yusuf Aydin, Kenan Di̇ker
Turkish Journal of Agriculture and Forestry
The effects of 2 irrigation intervals (I_{f1}: 7 days and I_{f2}: 14 days), 4 nitrogen doses (N_g, N_0, N_1, N_2 and N_3) and 2 crop coefficients (K_{pc1}: 0.60 and K_{pc2}: 0.90) on pistachio nut fertigation were studied to establish suitable irrigation and fertigation scheduling. The nitrogen levels were 0, 10, 15 and 20 mg L^{-1}. In the traditional treatment, N_g, each tree received 500/600/400 g of NPK fertilizer at the beginning of February. Other fertilizer doses were applied in the irrigation water through a drip system. Irrigation water amount was calculated based on Class A-Pan evaporation. Wetted percentage in each …
The Impact Of Genomics And Genetics On Wheat Quality Improvement, John Snape, Lesley Fish, David Leader, Robert Bradburne, Adrian Turner
The Impact Of Genomics And Genetics On Wheat Quality Improvement, John Snape, Lesley Fish, David Leader, Robert Bradburne, Adrian Turner
Turkish Journal of Agriculture and Forestry
This paper discusses how genetic and genomic tools may be used to understand the genetical and molecular control of cereal quality and to develop tools for its manipulation by conventional and genetic engineering approaches. Comprehensive genetic maps are a first step in the genetical and molecular analysis of traits and these now allow the dissection of the genetical control of complex traits. As an example, data on the genetical control of grain protein content in UK winter wheats is presented. From a series of field trials, several potentially useful new QTLs were identified on chromosomes 2B, 5D, 6A, 6B, 7A …
Role Of Conventional Plant Breeding And Biotechnology In Future Wheat Production, Sanjaya Rajaram
Role Of Conventional Plant Breeding And Biotechnology In Future Wheat Production, Sanjaya Rajaram
Turkish Journal of Agriculture and Forestry
The global wheat production by year 2020 could be increased by 40% provided there is a good integrated multidisciplinary wheat research program optimally funded by either public or private sectors. More emphasis needs to be placed on: 1) Improving yield potential; 2) Durable disease resistance; 3) Increasing abiotic stress tolerance; 4) Adopting better conservation systems. There are roles for both conventional plant breeding and biotechnology supported by other disciplines to achieve this goal.
Biotechnology Applications For Wheat Improvement At Cimmyt, Harindra Manilal William, Ravi Prakash Singh, Richard Trethowan, Maarten Van Ginkel, Alessandro Pellegrinshi, Julio Huerta-Espino, David Hoisington
Biotechnology Applications For Wheat Improvement At Cimmyt, Harindra Manilal William, Ravi Prakash Singh, Richard Trethowan, Maarten Van Ginkel, Alessandro Pellegrinshi, Julio Huerta-Espino, David Hoisington
Turkish Journal of Agriculture and Forestry
Despite the tremendous advances made by plant breeders in increasing the global food production, there is still a significant need for increased quantity and quality of food items in various regions of the world. Although this can be partially solved by upgrading the storage and distribution networks, crop performance and yield potentials are constantly challenged by various biotic and abiotic stress factors. As additional tools to facilitate the global wheat breeding efforts at CIMMYT, we have used molecular markers for characterizing loci that confer adult plant resistance to leaf rust and yellow (stripe) rust, which are globally important diseases in …
Genetics And Breeding For Durable Resistance To Leaf And Stripe Rusts In Wheat, Ravi Prakash Singh, Julio Huerta-Espino, Harindra Manilal William
Genetics And Breeding For Durable Resistance To Leaf And Stripe Rusts In Wheat, Ravi Prakash Singh, Julio Huerta-Espino, Harindra Manilal William
Turkish Journal of Agriculture and Forestry
Singh, R.P., J. Huerta-Espino and H.M. William. 2004. Genetics and breeding for durable resistance to leaf and stripe rusts in wheat. Turk. J. Agric. For. 28: xxx-xxx. Yellow (or stripe) and leaf (or brown) rusts, caused by Puccinia striiformis and P. triticina, respectively, are important diseases of wheat worldwide. Growing resistant cultivars is the most economical and environmentally safe control measure and has no cost to growers. Wheat (Triticum aestivum) cultivars that have remained resistant for a long time, or in other words carry durable or race-nonspecific resistance, are known to occur. Inheritance of resistance indicates that these cultivars often …
Role Of Wheat In Diversified Cropping Systems In Dryland Agriculture Of Central Asia, Mekhlis Suleimenov, Kanat Akhmetov, Zheksembay Kaskarbayev, Aitkalym Kireyev, Lyudmila Martynova, Rakhim Medeubayev
Role Of Wheat In Diversified Cropping Systems In Dryland Agriculture Of Central Asia, Mekhlis Suleimenov, Kanat Akhmetov, Zheksembay Kaskarbayev, Aitkalym Kireyev, Lyudmila Martynova, Rakhim Medeubayev
Turkish Journal of Agriculture and Forestry
Wheat is major crop in dryland agriculture of Central Asia. In most cases both spring wheat and winter wheat are grown in rotation with summer fallow. Studies were conducted in order to identify alternative crops which possibly could replace part of summer fallow and part of wheat area. Summer fallow was found inefficient practice for soil moisture accumulation in semiarid steppes of northern and southern Kazakhstan as well as in Kyrgyzstan. Many alternative crops were identified in all zones of dryland farming providing better incomes to farmers than wheat. Most important are food legumes as field pea, chickpea, lentil, oilseeds …
Breeding Of Winter Wheat (Triticum Aestivum L.) For Different Adaptation Types In Multifunctional Agricultural Production, Zoltan Bedo, Laszlo Lang, Otto Veisz, Gyula Vida
Breeding Of Winter Wheat (Triticum Aestivum L.) For Different Adaptation Types In Multifunctional Agricultural Production, Zoltan Bedo, Laszlo Lang, Otto Veisz, Gyula Vida
Turkish Journal of Agriculture and Forestry
Germplasm research for sustainable wheat production has undergone a significant development in recent years. Considerable progress has been witnessed in breeding, especially with the selection of winter wheat genotypes with better adaptability to different technological systems in multifunctional agricultural production. The selection of wheat genotypes with abiotic and biotic resistance, stable performance under different fertilizer applications and for various technological systems, will contribute to the development of germplasm with special adaptation type and to that of environment-friendly technologies.
Economic Threshold For Wild Radish (Raphanus Raphanistrum L.) Control In Wheat Fields, Özhan Boz
Economic Threshold For Wild Radish (Raphanus Raphanistrum L.) Control In Wheat Fields, Özhan Boz
Turkish Journal of Agriculture and Forestry
Field experiments were conducted in Aydın province in 1998 and 1999 to determine the economic threshold (ET) using florasulam + flumetsulam, 2,4-D amine, thifensulfuron methyl + tribenuron-methyl, and tribenuron-methyl for wild radish (Raphanus raphanistrum L.) in wheat. The effect of wild radish density (1, 2, 4, 8 and 16 plants m^{-2}) on wheat yield was investigated using an adjacent plot design with 4 fields. For each weed density, yield was compared with that in the adjacent weed-free control plot. The grain yield in wild radish-free wheat was 4079 kg ha^{-1} in 1998, 4369 kg ha^{-1} in 1999 and 4224 kg …
Salinity Response Of Transgenic Potato Genotypes Expressing The Oxalate Oxidase Gene, Hakan Turhan
Salinity Response Of Transgenic Potato Genotypes Expressing The Oxalate Oxidase Gene, Hakan Turhan
Turkish Journal of Agriculture and Forestry
In vitro and in vivo responses of transgenic and non-transgenic potato (Solanum tuberosum L.) genotypes to salinity were investigated. A gene responsible for the production of oxalate oxidase enzyme, whose expression has been associated with plant stress tolerance, was used. Transgenic potato plants expressing the oxalate oxidase enzyme were produced using Agrobacterium-mediated transformation. The transgenic nature of the plants was verified by their antibiotic (kanamycin) resistance and then in vitro enzyme assays. Four independent transgenic genotypes obtained from 2 cultivars, Maris Bard and Desiree, were tested at 5 levels of NaCl (0%, 0.25%, 0.50%, 0.75% and 1.00% w/v) in vitro. …
Effect Of Storage Time On Some Mechanical Properties And Bruise Susceptibility Of Pears And Apples, Yeşi̇m Benal Yurtlu, Doğan Erdoğan
Effect Of Storage Time On Some Mechanical Properties And Bruise Susceptibility Of Pears And Apples, Yeşi̇m Benal Yurtlu, Doğan Erdoğan
Turkish Journal of Agriculture and Forestry
This research was conducted to evaluate the effect of storage time on some mechanical properties and bruise susceptibility of Williams and Ankara varieties of pear and Starkspur Golden Delicious and Starking varieties of apple. The research was performed in 2 stages. Firstly, compression tests were conducted to determine the mechanical properties of fruits. Secondly, an impact test was used to determine the bruise susceptibility of test materials. Impact tests were performed using a pendulum with 50 cm arm length. The tests were carried out at 5 storage times (harvest day, 1^{st}, 2^{nd}, 3^{rd} and 4^{th} month) and 3 drop heights …
Total Protein Content And Sds-Page In Pear Scions Grafted On Quince A And Pear Seedling Rootstocks, Hati̇ce Gülen, Ali̇ Küden, Joseph Postman, Rajeev Arora
Total Protein Content And Sds-Page In Pear Scions Grafted On Quince A And Pear Seedling Rootstocks, Hati̇ce Gülen, Ali̇ Küden, Joseph Postman, Rajeev Arora
Turkish Journal of Agriculture and Forestry
This study was conducted to investigate the effects of various rootstocks on the total soluble protein content of pear scions, and to detect a polypeptide as a marker that would be associated with pear/quince compatibility/incompatibility. Bark samples were collected from 5 year-old pear scions grafted on QA and pear seedling rootstocks (PS). Total soluble protein contents of bark tissues of 4 pear scions, Passa Crassana (PC), Beurre Hardy (BH), Beurre Bosc (BB) and Bartlett (BT), were determined using the Bradford assay. Protein profiles of bark tissues taken from the graft combinations were determined using SDS-PAGE. In general, the scions grafted …
Econometric Modeling Of Turkey's Hazelnut Sector: Implications On Recent Policies*, Fahri̇ Yavuz, Avni̇ Bi̇ri̇nci̇, Kenan Peker, Tecer Atsan
Econometric Modeling Of Turkey's Hazelnut Sector: Implications On Recent Policies*, Fahri̇ Yavuz, Avni̇ Bi̇ri̇nci̇, Kenan Peker, Tecer Atsan
Turkish Journal of Agriculture and Forestry
The hazelnut is an important product in Turkey's economy as it is an important source of income for a large number of family farms and makes up around 75% of world production and 20% of total agricultural exports from Turkey. Hazelnut production has increased in recent years along with high levels of storage and expansion of planted areas from traditional steep lands to flat lands, where alternative cropping is possible. The aim of this study was to determine the major causes of these problems using an econometric model of Turkey's hazelnut sector. Estimation results of the model comply with economic …
Effects Of Minimum And Conventional Tillage Systems On Soil Properties And Yield Of Winter Wheat (Triticum Aestivum L.) In Clay-Loam In The Çanakkale Region, Saki̇ne Özpinar, Anil Çay
Effects Of Minimum And Conventional Tillage Systems On Soil Properties And Yield Of Winter Wheat (Triticum Aestivum L.) In Clay-Loam In The Çanakkale Region, Saki̇ne Özpinar, Anil Çay
Turkish Journal of Agriculture and Forestry
The experiment was conducted during the 2001-2003 cropping period to evaluate the effects of 3 tillage systems, conventional tillage (CT), and minimum tillage with rototiller (MTR) and disc (MTD), on the soil properties and wheat yield (Triticum aestivum L.). Based on 2-year results, soil bulk density at 0-10 cm in the growing period in MTR, CT and MTD was 1.20, 1.34 and 1.24 Mg m^{-3} respectively. Corresponding values at 10-20 and 20-30 cm were 1.26, 1.29 and 1.21 Mg m^{-3} and 1.30, 1.27 and 1.40 Mg m^{-3} respectively. Aggregate size distribution and mean weight diameter throughout the 2 years of …
Using Advanced Spectral Analyses Techniques As Possible Means Of Identifying Clay Minerals, Ünal Altinbaş, Yusuf Kurucu, Mustafa Bolca, A. H. El-Nahry
Using Advanced Spectral Analyses Techniques As Possible Means Of Identifying Clay Minerals, Ünal Altinbaş, Yusuf Kurucu, Mustafa Bolca, A. H. El-Nahry
Turkish Journal of Agriculture and Forestry
Spectral analyses, one of the most advanced remote sensing techniques, were used as a possible means of identifying the mineralogy of the clay fractions that corresponded to the Küçük Menderes Plain, south of İzmir, Turkey. Different spectral processes were used to execute the prospective spectral analyses. The processes include: i. the reflectance calibration of TM images belonging to the studied area, ii. using minimum noise fraction (MNF) transformation and iii. creating the pixel purity index (PPI), which was used to the most "spectrally pure", extreme, pixel in multi-spectral images. Spectral analyses of the clay mineralogy of the studied area were …
Clay Minerals, Ca/Mg Ratio And Fe-Al-Oxides In Relation To Structural Stability, Hydraulic Conductivity And Soil Erosion In Southeastern Turkey, Kadi̇r Yilmaz, İsmai̇l Çeli̇k, Seli̇m Kapur, John Ryan
Clay Minerals, Ca/Mg Ratio And Fe-Al-Oxides In Relation To Structural Stability, Hydraulic Conductivity And Soil Erosion In Southeastern Turkey, Kadi̇r Yilmaz, İsmai̇l Çeli̇k, Seli̇m Kapur, John Ryan
Turkish Journal of Agriculture and Forestry
Studies of clay mineralogy and related chemical composition are rarely connected with implications for soil management in the field. However, this study attempts to manifest the practical utilization of analytical data for determining the susceptibility to soil erosion. The data obtained involve the determination of clay mineral properties, calcium/magnesium ratios, and free aluminum (Al) and iron (Fe) oxides on structure stability, and hydraulic conductivity properties. Nine representative soil pedons developed on serpentine, limestone, and basalt parent materials were selected for the study. The soils were initially grouped into 3 according to their structural stability values. Group 1 soils had the …
Interactive Effect Of Nitrogen And Boron On Cotton Yield And Fiber Quality, Özgül Görmüş
Interactive Effect Of Nitrogen And Boron On Cotton Yield And Fiber Quality, Özgül Görmüş
Turkish Journal of Agriculture and Forestry
This study aimed to determine the effect of application rates of N and B on cotton yield and fiber quality. Suregrow 125 (Gossypium hirsutum L.) was grown on a clay soil having an average 0.38 mg kg^{-1} B concentration. Analysis of leaf tissue taken at early bloom and before the nutrient application indicated that N and B concentrations were sufficient. Nitrogen was applied to the soil at rates of 0, 80 and 160 kg ha^{-1}, and B was applied to the foliage 3 times for totals of 0, 0.56 and 1.12 kg B ha^{-1}. Foliar-applied B significantly increased leaf blade …
Determining Some Yield And Quality Characteristics Of Mutants Induced From A Durum Wheat (Triticum Durum Desf.) Cultivar, Mehmet Ali̇ Saki̇n, Ahmet Yildirim, Sabri̇ Gökmen
Determining Some Yield And Quality Characteristics Of Mutants Induced From A Durum Wheat (Triticum Durum Desf.) Cultivar, Mehmet Ali̇ Saki̇n, Ahmet Yildirim, Sabri̇ Gökmen
Turkish Journal of Agriculture and Forestry
Mutation breeding is one of the breeding methods used successfully in durum wheat for selecting lines with increased agronomic values. The aim of this study was to select mutant lines having a better agronomic potential than the mother variety Gediz-75 in the M_6 and M_7 generations. The mutants were derived from the variety Gediz-75 of durum wheat (Triticum durum Desf.). The seeds were either irradiated with gamma rays at Cobalt 60 (^{60}Co) or treated with ethyl-methane-sulfonate (EMS). Eighteen selected mutants and the mother variety Gediz-75 were examined in the M_6 and M_7 generations for yield and quality characteristics. The experiments …
An Investigation On The Establishment Of Artificial Pasture Under Ankara's Ecological Conditions*, Sebahatti̇n Albayrak, Hayretti̇n Eki̇z
An Investigation On The Establishment Of Artificial Pasture Under Ankara's Ecological Conditions*, Sebahatti̇n Albayrak, Hayretti̇n Eki̇z
Turkish Journal of Agriculture and Forestry
This study was conducted to determine suitable perennial forage species and their mixtures for the establishment of short-term artificial pastures under dry conditions in Ankara between 2000 and 2002. Alfalfa (Medicago sativa L.), sainfoin (Onobrychis sativa Lam.), smooth brome (Bromus inermis Leys.), crested wheatgrass (Agropyron cristatum (L.) Gaertn.) and their binary and complex mixtures were used. The research was carried out in a randomized block design with 4 replicates. The results showed significant differences among the botanical composition ratio in mixtures. The highest green, hay and dry matter yield were obtained from alfalfa + smooth brome mixtures (16.05 t ha^{-1}, …