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Crystalline Structure Properties Of Bleached And Unbleached Wheat Straw (Triticum Aestivum L.) Soda-Oxygen Pulp, Esat Gümüşkaya, Mustafa Usta
Crystalline Structure Properties Of Bleached And Unbleached Wheat Straw (Triticum Aestivum L.) Soda-Oxygen Pulp, Esat Gümüşkaya, Mustafa Usta
Turkish Journal of Agriculture and Forestry
In this study, the crystallinity index and crystallite size of wheat straw powder, soda-oxygen pulp and soda oxygen pulp bleached with hypochlorite (H) and hypochlorite and peroxide (HP) sequences were determined using an x-ray diffractometer method. The crystallinity indexes of these pulp samples were found to be 45.61%, 52.00%, 52.60% and 54.11%, respectively. The crystallite sizes of these pulp samples were also determined and were 6.4 nm, 3.4 nm, 4.3 nm and 4.6 nm, respectively. On the other hand, the crystallinity index and crystallite size of holocellulose, cellulose and alpha-cellulose in wheat straw were then found to be 65.00%, 55.20% …
Comparison Of Erosion And Runoff Predicted By Wepp And Agnps Models Using A Geographic Information System, Hali̇l Kirnak
Comparison Of Erosion And Runoff Predicted By Wepp And Agnps Models Using A Geographic Information System, Hali̇l Kirnak
Turkish Journal of Agriculture and Forestry
The Water Erosion Prediction Project (WEPP) model and the Agricultural Non-Point-Source Pollution Model (AGNPS) were used in conjunction with a geographic information system (GIS) database to predict runoff and sediment discharges for Rock Creek watershed, an agricultural watershed in Ohio, USA. Observed and predicted values were compared for selected storm events in 1988 and 1990. The statistical evaluation of the WEPP and AGNPS models showed that WEPP predicted average runoff, peak runoff and sediment yield better than AGNPS. WEPP and AGNPS overpredicted peak runoff rates compared to observed data by 15.5% and 26.5%, respectively. The t-test showed that there was …
Additive Main Effects And Multiplicative Interactions Analysis Of Yield Performances In Bread Wheat Genotypes Across Environments, Yüksel Kaya, Çeti̇n Palta, Seyfi̇ Taner
Additive Main Effects And Multiplicative Interactions Analysis Of Yield Performances In Bread Wheat Genotypes Across Environments, Yüksel Kaya, Çeti̇n Palta, Seyfi̇ Taner
Turkish Journal of Agriculture and Forestry
This study was carried out to determine the yield performances of 20 bread wheat genotypes across six environments in Central Anatolia, Turkey, in the 2000-2001 growing season. The experimental layout was a randomized complete block design with four replications. Additive main effects and multiplicative interactions analysis (AMMI) indicated that the yield performances of genotypes were under the major environmental effects of genotype by environmental interactions. The first two principal component axes (PCA 1 and 2) were significant (p < 0.01) and cumulatively contributed to 78.64% of the total genotype by environment interaction. A biplot generated using genotypic and environmental scores of the first two AMMI components also showed that genotypes with larger PCA 1 and lower PCA 2 scores gave high yields (stable genotypes), and genotypes with lower PCA 1 and larger PCA 2 scores had low yields (unstable genotypes), as in the sites tested.
The Amount Of No_{3}^{-}-N Transferred To Soil By Legumes, Forage And Seed Yield, And The Forage Quality Of Annual Legume + Triticale Mixtures, Uğur Büyükburç, Yaşar Karadağ
The Amount Of No_{3}^{-}-N Transferred To Soil By Legumes, Forage And Seed Yield, And The Forage Quality Of Annual Legume + Triticale Mixtures, Uğur Büyükburç, Yaşar Karadağ
Turkish Journal of Agriculture and Forestry
The forage yield and quality of hairy vetch, grasspea and triticale grown alone and as mixtures of legume + triticale were investigated in field experiments conducted in the fields of the Faculty of Agriculture of Gaziosmanpaşa University in 1998-1999 and 1999-2000. The highest dry matter (10.06 t/ha) and crude protein yields (1.56 t/ha) were obtained from the mixture including 50% Line-452 of grasspea + 50% triticale. On the other hand, the highest seed yield (5.38 t/ha) was achieved from the 50% Line-38 of grasspea + 50% triticale mixture. The amount of NO_{3}^{-}-N transferred to the soil by legumes (0.079 t/ha) …
Seasonal Carbohydrate Changes Of The Bark Tissues Of Hazelnut Cultivars Grown In The East And West Black Sea Region, Yeşi̇m Okay, A. İlhami̇ Köksal, Nevzat Artik
Seasonal Carbohydrate Changes Of The Bark Tissues Of Hazelnut Cultivars Grown In The East And West Black Sea Region, Yeşi̇m Okay, A. İlhami̇ Köksal, Nevzat Artik
Turkish Journal of Agriculture and Forestry
The seasonal changes in total carbohydrate, fructose, glucose and sucrose levels of bark tissues of the Tombul, Palaz, Kalınkara, Çakıldak and Sivri cultivars grown in the East and West Black Sea regions were determined by high performance liquid chromatography (HPLC). As with other fruit species, carbohydrate levels decreased from the end of spring to summer, showed steady changes with low values in summer and increased starting in the middle of fall until winter. Despite a general tendency of decline during spring, the carbohydrate and soluble sugar contents of Sivri increased in the Düzce region in April. Annual changes in carbohydrates …
Effects Of Girdling, Ga3 Applications And Additional Nutrient Applications On Fruit Yield, Fruit Set And Fruit Size In The Clementine Mandarin, Turgut Yeşi̇loğlu, Ebru Cücü Açikalin
Effects Of Girdling, Ga3 Applications And Additional Nutrient Applications On Fruit Yield, Fruit Set And Fruit Size In The Clementine Mandarin, Turgut Yeşi̇loğlu, Ebru Cücü Açikalin
Turkish Journal of Agriculture and Forestry
In small fruit species, like the mandarin, fruit size is lower in Turkey than in other countries and this has a negative effect on their marketing. There are problems with fruit yield and size in the Clementine mandarin, which is a commonly grown mandarin cultivar in Turkey. To solve these problems, various studies have been carried out. Girdling is one of the methods studied and it had positive effects on fruit yield and size without lowering the fruit quality. However, fruit yield and fruit size were reduced to previous levels if the treatment was repeated over a long period. In …
Forage Yield Of Different Alfalfa Cultivars Under Ankara Conditions, Suzan Altinok, Azi̇z Karakaya
Forage Yield Of Different Alfalfa Cultivars Under Ankara Conditions, Suzan Altinok, Azi̇z Karakaya
Turkish Journal of Agriculture and Forestry
This research was carried out in the experimental field of Ankara University, Faculty of Agriculture, Department of Field Crops during the years 1997, 1998, and 1999. Alfalfa cultivars Elçi, Kayseri, Mesa Sirsa, Fortress, Bilensoy-80, 5638/Miral, Peru, and Bitlis were used as materials. Plant heights of alfalfa cultivars during three years were highest before first cuts, and the highest forage yields were obtained from these cuts. According to the results, total green yields and dry matter yields were 1869 and 651 kg/da in first year, 4071 and 1297 kg/da in the second year, and 3839 and 1226 kg/da in the third …
Estimation Of Instantaneous Peak Flows In Seyhan River Basin Using Regional Regression Procedures, Fati̇h Topaloğlu
Estimation Of Instantaneous Peak Flows In Seyhan River Basin Using Regional Regression Procedures, Fati̇h Topaloğlu
Turkish Journal of Agriculture and Forestry
Multivariate procedures for estimating instantaneous flood flows for various return periods in Seyhan river basin are presented in the study. Procedures aim at developing regression equations uscable for the basin using annual peak instantaneous flows, climatic and morphometric charactcristics. It was determined that best subset analysis gave the highest determination coefficients (91.0%
An Estimation Of The Recreational Use Value Of Kursunlu Waterfall Nature Park By The Individual Travel Cost Method, Veli̇ Ortaçeşme, Burhan Özkan, Osman Karagüzel
An Estimation Of The Recreational Use Value Of Kursunlu Waterfall Nature Park By The Individual Travel Cost Method, Veli̇ Ortaçeşme, Burhan Özkan, Osman Karagüzel
Turkish Journal of Agriculture and Forestry
The recreational use value of Kursunlu Waterfall Nature Park in the Antalya province of Turkey was studied by using the Individual Travel Cost Method (ITCM). For this purpose, 500 on-site questionnaires were administered between September 1998 and June 1999. By applying certain criteria to these questionnaires, 280 cases were selected for economic analysis. The number of visits made by individuals was used as the dependent variable, while travel costs of individuals to the Park, socio-economic variables (age, education and household income) and alternative sites were selected as the independent variables in the demand model of the Park. A semi-log functional …
Developing Tobacco Lines Resistant To Powdery Mildew (Erysiphe Cichoracearum L.) By Anther Culture Technique For The Aegean Region, A. Sani̇ye Gencer
Developing Tobacco Lines Resistant To Powdery Mildew (Erysiphe Cichoracearum L.) By Anther Culture Technique For The Aegean Region, A. Sani̇ye Gencer
Turkish Journal of Agriculture and Forestry
The anther culture technique as a biotechnological application was combined with conventional breeding methods in order to improve tobacco varieties' resistant to powdery mildew prevailing in the Aegean region of Turkey. For this, resistance was transferred to two varieties from a genitor by the backcross method leading to derive haploid plants from the cultured anthers of BC_1 plants firstly, and dihaploid plants by acenaphthene or colchicine treatments secondly. A total of 14 dihaploid lines out of 67 DH lines developed were found to be resistant to powdery mildew in disease screening tests. They were later subjected to field experiments to …
Effects Of Pruning Treatments On The Yield And Fruit Quality Of Precoce De Tyrinthe Apricot Cultivar, Levent Son, Ali̇ Küden
Effects Of Pruning Treatments On The Yield And Fruit Quality Of Precoce De Tyrinthe Apricot Cultivar, Levent Son, Ali̇ Küden
Turkish Journal of Agriculture and Forestry
This study was carried out to determine the effects of pruning on the yield, fruit quality and phenological aspects of three year-old trees of the Precoce de Tyrinthe apricot cultivar grown in Mut-Mersin. In the first experimental year, unpruned trees were found to be more productive; however, these trees gave lower yields (6.5 kg/tree) in the second year due to alternate bearing. August+winter (12.0 kg/tree), July+winter (10.4 kg/tree), and September+winter (10.1 kg/tree) pruning applications were more productive than control trees (6.50 kg/tree). The fruit size of the control trees was 34.05 g, while September+winter (45.66 g), August+winter (44.70 g), and …
Root Yield And Quality Of Sugarbeet In Relation To Sowing Date, Plant Population And Harvesting Date Interactions, Ramazan Çakmakçi, Erol Oral
Root Yield And Quality Of Sugarbeet In Relation To Sowing Date, Plant Population And Harvesting Date Interactions, Ramazan Çakmakçi, Erol Oral
Turkish Journal of Agriculture and Forestry
Sowing date, plant density and harvest date are important factors affecting root yield and quality of sugar beet (Beta vulgaris L.). The effects of sowing date (beginning of April, mid-April, the end of April, mid-May, and the end of May), plant density, and harvest date (the end of September and mid-October) on sugar beet yield and quality were studied in trials in the Eastern Anatolia region on a loam soil in 1994-97. Variation in plant density was obtained by combining two seed distances and two target emergence percentages. Plant populations for the different treatments reached 55 500, 73 000, 88 …
Kinetic Studies With Crude Tomato Alcohol Dehydrogenase, Emi̇n Yilmaz
Kinetic Studies With Crude Tomato Alcohol Dehydrogenase, Emi̇n Yilmaz
Turkish Journal of Agriculture and Forestry
Tomato alcohol dehydrogenase (ADH) is very important in the formation of fresh tomato aroma volatiles. The kinetic characterization and isolation of this enzyme may promote some in vitro applications. Kinetic studies of crude tomato ADH associated with NAD^+ cofactor revealed Km values of 2.03 mM for ethanol and 0.064 mM for NAD^+, a Vmax value of 24.51 µM/min, and an activation energy of 0.0208 kcal/mole. Variable pH measurements indicated that the enzyme is optimally active in a narrow range above pH 8.5. Dalziel coefficients were consistent with a sequential but not ordered mechanism. Also the enzyme was found to be …
Principal Mechanical Properties Of Eastern Beech Wood (Fagus Orientalis Lipsky) Naturally Grown In Andırın Northeastern Mediterranean Region Of Turkey, İbrahi̇m Bektaş, Cengi̇z Güler, M. Altay Baştürk
Principal Mechanical Properties Of Eastern Beech Wood (Fagus Orientalis Lipsky) Naturally Grown In Andırın Northeastern Mediterranean Region Of Turkey, İbrahi̇m Bektaş, Cengi̇z Güler, M. Altay Baştürk
Turkish Journal of Agriculture and Forestry
The aim of this study was to determine some mechanical properties (compression, static bending, impact bending and shear strengths) of Eastern beech wood (Fagus orientalis Lipsky) and to compare with them other beech species. In the tests, randomly selected logs taken from the trunk 2-4 m height were obtained from trees naturally growing in Andırın (Northeastern Mediterranean region) and these logs were prepared and tested according to Turkish standards. The results showed that the mean compression strength was 606 kgcm^{-2}, static bending strength 1204 kgcm^{-2}, impact bending strength 0.85 kgmcm^{-2} and shear strength 99 kgcm^{-2}. The relations of strengths with …
Effects Of Surface Coating Materials On The Thermal Conductivity And Combustion Properties Of Particleboard, Gökay Nemli̇, Hülya Kalaycioğlu
Effects Of Surface Coating Materials On The Thermal Conductivity And Combustion Properties Of Particleboard, Gökay Nemli̇, Hülya Kalaycioğlu
Turkish Journal of Agriculture and Forestry
The specific properties of particleboard samples used in this study were as follows: 280x210x1.8 cm dimensions, 0.68 g/cm^3 specific gravity. Produced boards were coated with lacquered paint, melamine impregnated papers, wood veneers and continue press laminates. The effects of surface coating material type, melamine paper weight, wood veneer type and thickness, and continue press laminate thickness on the thermal conductivity and combustion properties of particleboard were investigated. Results showed that surface coating material type was found to affect these properties. Melamine paper weight and wood veneer thickness did not affect the thermal conductivity and combustion properties of particleboard samples. Wood …
Irrigation Scheduling Of Drip-Irrigated Tomatoes Using Class A Pan Evaporation, Öner Çeti̇n, Osman Yildirim, Demet Uygan, Hasan Boyaci
Irrigation Scheduling Of Drip-Irrigated Tomatoes Using Class A Pan Evaporation, Öner Çeti̇n, Osman Yildirim, Demet Uygan, Hasan Boyaci
Turkish Journal of Agriculture and Forestry
This study was carried out to investigate the irrigation schedule of drip-irrigated tomatoes (Lycopersicon esculentum cv. Dual Large, F 1) using Class A pan evaporation. Tomatoes plants were grown in a clay soil in the experimental fields of the Research Institute of Rural Services in Eskişehir between 1998 and 2000. Irrigation water was applied as a certain ratio of Class A pan evaporation (k_{pc} = 0.50, 0.75, 1.00, and 1.25) with different irrigation intervals (2, 4, and 6 days). Significant differences in fruit yields were obtained between the treatments, except for in 1998. Maximum marketable fruit yield was found at …
Determination Of Genetic Variation In Populations Of Bemisia Tabaci In Antalya, Hüseyi̇n Göçmen, Zübeyi̇r Devran
Determination Of Genetic Variation In Populations Of Bemisia Tabaci In Antalya, Hüseyi̇n Göçmen, Zübeyi̇r Devran
Turkish Journal of Agriculture and Forestry
Although a number of investigations on the molecular genetics of Bemisia tabaci (Gennadius) have appeared in the literature, no such studies are known from Turkey. In order to fill this gap the amplified fragment length polymorphism (AFLP) technique was used to assay eight populations of B. tabaci collected from cotton, protected vegetables (tomato, cucumber and eggplant) and peppermint in various locations in the province of Antalya, Turkey. Eleven AFLP primer pairs detected a total of 547 AFLP fragments in these populations and 389 of these showed polymorphism. Cluster analyses of AFLP data clearly separated these populations into two groups with …
Yield Characteristics And Essential Oil Composition Of Lemon Balm (Melissa Officinalis L.) Grown In The Aegean Region Of Turkey, Ali̇ Osman Sari, Ayhan Ceylan
Yield Characteristics And Essential Oil Composition Of Lemon Balm (Melissa Officinalis L.) Grown In The Aegean Region Of Turkey, Ali̇ Osman Sari, Ayhan Ceylan
Turkish Journal of Agriculture and Forestry
Eleven lemon balm (Melissa officinalis L.) populations originating from different sources in Turkey and European countries were investigated in two ecologically different locations, Menemen and Bozdağ, in the Aegean region of Turkey over three years to determine the populations having high quality and yield. There were significant variations between locations, years and populations in terms of yield and quality characters. The ecology was highly suitable in Menemen for growing lemon balm successfully and almost all yield and quality characters in Menemen were significantly higher than those in Bozdağ. The plant height, green herb yield, drug leaves yield and essential oil …
Comparison Of Determinate And Indeterminate Types Of Sesame For Oil Content And Fatty Acid Composition, Bülent Uzun, Sali̇h Ülger, M. İlhan Çağirgan
Comparison Of Determinate And Indeterminate Types Of Sesame For Oil Content And Fatty Acid Composition, Bülent Uzun, Sali̇h Ülger, M. İlhan Çağirgan
Turkish Journal of Agriculture and Forestry
Determinate growth habit in sesame is not available in nature originally. The character was a mutant induced by gamma rays and has the potential to make possible mechanised harvesting in sesame by enabling synchronous flowering. Though no detailed study on fatty acids of determinate types has been recently performed, much material is available on the genotypes of indeterminates. Therefore, the present study aimed to compare determinate and indeterminate types of sesame with regard to oil content and fatty acid composition. A total of 10 genotypes, six determinate and four indeterminate types, were grown in a randomised complete blocks design with …
Induction Of Phytoalexin Accumulation In Broad Bean (Vicia Faba L.) Cotyledons Following Treatments With Biotic And Abiotic Elicitors, Soner Soylu, Mark H. Bennett, John W. Mansfield
Induction Of Phytoalexin Accumulation In Broad Bean (Vicia Faba L.) Cotyledons Following Treatments With Biotic And Abiotic Elicitors, Soner Soylu, Mark H. Bennett, John W. Mansfield
Turkish Journal of Agriculture and Forestry
Broad bean (Vicia faba) cotyledons that were inoculated artificially with fungal pathogens or exposed to various abiotic agents were analysed for phytoalexin production. Biotic elicitors, such as Botrytis cinerea and B. allii, and abiotic elicitors, such as ultraviolet (UV) radiation (254 nm) and freezing-thawing, were used to induce phytoalexin accumulation. Wyerone and other wyerone derivatives were the major phytoalexins responding in broad bean cotyledons. The quantities of wyerone within elicitor-treated tissues were examined by thin layer chromatography. The highest amount of wyerone was induced by B. cinerea (943 \mug/g fresh weight). Treatment of cotyledons with UV radiation (452 \mug/g f.wt), …
Plant Parasitic Nematode Species Of Tylenchida (Nematoda) Associated With Sesame (Sesamum Indicum L.) Growing In The Mediterranean Region Of Turkey, İlker Kepenekci̇
Plant Parasitic Nematode Species Of Tylenchida (Nematoda) Associated With Sesame (Sesamum Indicum L.) Growing In The Mediterranean Region Of Turkey, İlker Kepenekci̇
Turkish Journal of Agriculture and Forestry
Plant parasitic nematodes (Tylenchida: Nematoda) found on sesame (Sesamum indicum L.) growing in the Mediterranean region of Turkey were examined faunistically and taxonomically. This study was carried out in two provinces (Antalya and İçel) important for the cultivation of sesame during the summer of 1998. Samples were taken from 20 different sesame fields and examined in the laboratory. By the end of our research 23 species were identified. Two of these (Helicotylenchus abunaamai Siddiqi and Paratylenchus rotundicephalus Bajaj) are species which have never been recorded in Turkey. Their identification, distribution in the Mediterranean region, and morphological and morphometric characteristics are …
The Possibilities Of Using Pheromone Traps And Total Thermal Summation In Estimating Adult Emergence Of Pectinophora Gossypiella (Saund.), A Pest Of Cotton Growing Areas In Amik Plain, Cafer Mart, Oğuzhan Doğanlar, Şener Tarla
The Possibilities Of Using Pheromone Traps And Total Thermal Summation In Estimating Adult Emergence Of Pectinophora Gossypiella (Saund.), A Pest Of Cotton Growing Areas In Amik Plain, Cafer Mart, Oğuzhan Doğanlar, Şener Tarla
Turkish Journal of Agriculture and Forestry
In 1996-1999, studies on the utilization of pheromone traps for the estimation of adult emergence and the observation of the seasonal population dynamics of Pectinophora gossypiella (Saund.), which tends to spread in cotton growing areas, and on the determination of day-degree values for its biological stages were carried out in Amik Plain. It was found that adult emergence of the overwintering generation first occurred between late April and early May and lasted for 2-2.5 months. The effective total summation for first adult emergence was 136.43, 137.43 and 186.95 day-degree, and that for maximum adult emergence was 570.80, 460.23 and 479.35 …
Research On The Determination Of The Socio-Economic Factors Affecting The Farmers' Behaviour In Adopting Land Consolidation Implemented In Güzelbeyli Town In Zile County, Tokat Province, Nuray Kizilaslan, Sevi̇lay Almus
Research On The Determination Of The Socio-Economic Factors Affecting The Farmers' Behaviour In Adopting Land Consolidation Implemented In Güzelbeyli Town In Zile County, Tokat Province, Nuray Kizilaslan, Sevi̇lay Almus
Turkish Journal of Agriculture and Forestry
The main purpose of this study was to determine the factors affecting the farmers' adoption behaviour in adopting land consolidation implemented in Güzelbeyli town in Zile county, Tokat province. Chi-square analysis was performed to determine whether a difference existed between the farmers who adopted and did not adopt the land consolidation. The results of the analysis indicated that there were some factors affecting the adoption of land consolidation such as farmers' social participation level and their level of awareness about land consolidation. This result may show that the participation of farmers in different activities increases parallel to an expansion in …
Socio-Economic Structural Analysis Of Small Firms In The Forest Product Industry In The Eastern Black Sea Region In Turkey, Kadri̇ Cemi̇l Akyüz, Hi̇cabi̇ Cindik, Hasan Seri̇n
Socio-Economic Structural Analysis Of Small Firms In The Forest Product Industry In The Eastern Black Sea Region In Turkey, Kadri̇ Cemi̇l Akyüz, Hi̇cabi̇ Cindik, Hasan Seri̇n
Turkish Journal of Agriculture and Forestry
Structural and statistical analyses of small establishments in the forest products industry were performed in 63 towns and cities in six provinces in the Eastern Black Sea region, which is relatively less developed than many other regions in Turkey. The other objective of this study was to classify the establishments by using various factors. Correlation, cluster and discriminate analysis were used for classification of these establishments. Twenty-five various factors, collected especially from workers, were analyzed. The study was realized using questionnaire forms, filled in with the face-to-face communication method. As a result, 341 questionnaire forms were filled out in 63 …
Game Theory And Its Application To Field Crops In Antalya Province, Burhan Özkan, Handan Vuruş Akçaöz
Game Theory And Its Application To Field Crops In Antalya Province, Burhan Özkan, Handan Vuruş Akçaöz
Turkish Journal of Agriculture and Forestry
The purpose of this paper is twofold. The first aim is to present briefly game theory and to illustrate the relationship between game theory and linear programming. The other aim is to apply game theory to field crops. The game theory model was used for main field crops, namely wheat, barley, maize, chickpea, sesame, cotton and groundnut, in Antalya province in Turkey. The data included time series of gross product values of the investigated crops for the period 1980-1999. The Wald decision-making criterion was applied to the game theory model to determine the highest income under the worst conditions. The …
Amelioration Of Chilling Injuries In Watermelon Seedlings By Abscisic Acid, Ahmet Korkmaz
Amelioration Of Chilling Injuries In Watermelon Seedlings By Abscisic Acid, Ahmet Korkmaz
Turkish Journal of Agriculture and Forestry
A greenhouse study, designed in a randomized complete block design with five replications, was carried out at Clemson University, Clemson, SC, USA, in the spring of 1997. The objective of the study was to investigate whether abscisic acid (ABA) would mitigate chilling damages in the watermelon, a chilling-sensitive plant. 'Crimson Sweet' [Citrullus lanatus (Thumb) Matsum. & Nakai.] watermelon seedlings were grown in a greenhouse with a temperature regime of 25ºC (day) and 20ºC (night). Five-day-old seedlings were sprayed with 10^{-4} M cis, trans-abscisic acid 15 hours prior to being exposed to 1.5 ± 0.5ºC for 24 hours in a dark …
Chromosome Association In Allotetraploid Interspecific Hybrid Ryegrass And Parental Species, Bi̇lal Deni̇z
Chromosome Association In Allotetraploid Interspecific Hybrid Ryegrass And Parental Species, Bi̇lal Deni̇z
Turkish Journal of Agriculture and Forestry
This study was carried out in glasshouse conditions in summer 2000. Metaphase I (MI) chromosome association and numbers of chromosome arms bound were studied in autotetraploid perennial (Lolium perenne L.) and annual ryegrass (Lolium multiflorum Lam.) and their interspecific hybrid plants (Lolium hybridum). In addition, the relationships among different cytological characteristics with respect to meiotic regularity were determined. Chromosome associations at MI were often regular in the parent species and hybrid ryegrass plants however different pairing irregularities were found to be higher in perennial and especially in hybrid ryegrass plants than in the annual ryegrass plant genotypes. Total bivalent pairing …
Effects Of Seed Origin And Site On Wood Density Of Sitka Spruce (Picea Sitchensis (Bong.) Carr.) Grown In Britain, İlker Usta, Mike Hale
Effects Of Seed Origin And Site On Wood Density Of Sitka Spruce (Picea Sitchensis (Bong.) Carr.) Grown In Britain, İlker Usta, Mike Hale
Turkish Journal of Agriculture and Forestry
Since density may have a direct influence on wood properties and because density is a factor under genetic control, this study details the effects of seed origins and sites on density. In addition to seed origins, its variability both within and between trees was also examined. In this case, the variation in density was investigated in eight seed origins of Sitka spruce (Alaska-AL, British Columbia-BC, Queen Charlotte Islands-QCI, North Washington-NW, South Washington-SW, North Oregon-NO, South Oregon-SO, and California-CA) grown at two sites in Britain (Dalby: Eastern England and Rhondda: South Wales). For this purpose, the five trees of each seed …
Factors Affecting The Production Of E1 Type Particleboard, Gökay Nemli̇
Factors Affecting The Production Of E1 Type Particleboard, Gökay Nemli̇
Turkish Journal of Agriculture and Forestry
This study aimed to determine the best manufacturing variables for the high physical and mechanical properties, and formaldehyde emission of particleboards produced from E_1 type adhesive. In the production of particleboards, two different press temperatures, press times, pressures and three different adhesive use ratios were used. The best manufacturing variables were determined for the particleboard produced from E_1 type adhesive. The effects of these manufacturing variables on formaldehyde emission, bending strength, internal bonding strength and thickness swelling were investigated. According to the results, when the E_1 type adhesive was employed, the use of 11% and 9% adhesive use ratios for …
Hydraulic Conductivity Evaluation For A Drainage Simulation Model (Drainmod), Teki̇n Özteki̇n
Hydraulic Conductivity Evaluation For A Drainage Simulation Model (Drainmod), Teki̇n Özteki̇n
Turkish Journal of Agriculture and Forestry
The objective of this study was to determine the most suitable saturated hydraulic conductivity (K) values as input into DRAINMOD among a range of K data sets developed for the drainage experiment site in North Central Ohio using seven different K estimation methods. The K methods evaluated were monolith, core, auger-hole, MUUF soil database, and using the Hooghoudt, Kirkham, and van Schilfgaarde equations with water table drawdown and drainage discharge data. Simulations using DRAINMOD (Version 4.6) were conducted for the years 1962-1964 and 1967-1971, and runoff and drain discharge predictions were compared with measured discharges. The analyses showed that none …