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Articles 1 - 30 of 51
Full-Text Articles in Forest Sciences
Impact Of The Agricultural Sector On The Arkansas Economy, H. L. Goodwin Jr., Jennie Popp, Wayne Miller, Gina Vickery, Z. Clayton-Niederman
Impact Of The Agricultural Sector On The Arkansas Economy, H. L. Goodwin Jr., Jennie Popp, Wayne Miller, Gina Vickery, Z. Clayton-Niederman
Research Reports and Research Bulletins
Agriculture historically has been one of the primary sectors of the Arkansas economy. Agriculture is defined as the sum of agricultural, forestry, and fisheries production and processing activities unless otherwise specified. Not only does agriculture contribute to the economy through direct agricultural production and added value processing, it also plays an important role through the economy’s other sectors. Utilizing data from the United States Bureau of Economic Affairs and the State of Arkansas, the economic impact of agriculture on the Arkansas economy was estimated for the latest year available, 1999. Gross State Product (GSP) information for Arkansas was compared with …
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.
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 …
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 …
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 …
Sampling Sunn Pest (Eurygaster Integriceps Puton) In Overwintering Sites In Northern Syria, Bruce L. Parker, Scott D. Costa, Margaret Skinner, Mustapha El Bouhssini
Sampling Sunn Pest (Eurygaster Integriceps Puton) In Overwintering Sites In Northern Syria, Bruce L. Parker, Scott D. Costa, Margaret Skinner, Mustapha El Bouhssini
Turkish Journal of Agriculture and Forestry
Sampling statistics for development of a sampling plan for adult Sunn Pest, Eurygaster integriceps Puton, in their overwintering habitat were generated based on numbers of live and total adults in 1 to 4 litter samples per tree. Taylor's power law was used to estimate optimum sample size, critical stop lines for sequential sampling and a sequential difference test. Sunn Pest were found primarily nearer to tree boles and had an aggregated distribution among trees. There was more statistical and practical advantage to taking 1 sample per tree and increasing the number of trees sampled, rather than in increasing the number …
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 …
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 …
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% …
Some Agronomical Characteristics Of Doubled Haploid Lines Produced By Irradiated Pollen Technique And Parental Diploid Genotypes In Melons, Nebahat Sari, Hali̇t Yeti̇şi̇r
Some Agronomical Characteristics Of Doubled Haploid Lines Produced By Irradiated Pollen Technique And Parental Diploid Genotypes In Melons, Nebahat Sari, Hali̇t Yeti̇şi̇r
Turkish Journal of Agriculture and Forestry
This study was carried out at the Department of Horticulture, Faculty of Agriculture, Çukurova University in spring 1999 and 2000. In the study, 46 doubled haploid lines produced by irradiated pollen technique and 10 original diploid genotypes were used as plant materials. To investigate inbreeding depression in melons, doubled haploid lines and original diploid parental lines were compared with regard to plant vigor, yield and quality. Various plant growth and fruit characteristics were determined over two years. These were plant main stem height, node number, main stem diameter, earliness and total yield, fruit weight, fruit diameter, fruit length, rind thickness, …
Identification Of Root-Knot Nematodes In The Mediterranean Region Of Turkey By Using Rdna And Mtdna Markers, Zübeyi̇r Devran, Uğur Gözel, M. Ali̇ Söğüt, Şenol Yildiz, İ. Hali̇l Elekçi̇oğlu
Identification Of Root-Knot Nematodes In The Mediterranean Region Of Turkey By Using Rdna And Mtdna Markers, Zübeyi̇r Devran, Uğur Gözel, M. Ali̇ Söğüt, Şenol Yildiz, İ. Hali̇l Elekçi̇oğlu
Turkish Journal of Agriculture and Forestry
Fragments containing the internal transcribed spacer (ITS) ribosomal rDNA were amplified from Meloidogyne incognita, M. javanica, M. arenaria and M. hapla by polymerase chain reaction (PCR). Only digestion of the ITS region with the enzyme RsaI significantly distinguished M. hapla from other species, while other enzymes, EcoRI and BamHI, were not effective in distinguishing these nematode species. PCR was also done with mitocondrial DNA (mtDNA) markers for species discrimination. The obtained amplification product of 600 bp was digested with HinfI restriction endonuclease allowing discrimination among the four root-knot species. mtDNA was found to be a useful tool for discriminating between …
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), …
Determination Of Relationships Between Various Aerodynamics, Physio-Mechanical And Fiber Properties In Cotton, Mustafa Bülent Coşkun
Determination Of Relationships Between Various Aerodynamics, Physio-Mechanical And Fiber Properties In Cotton, Mustafa Bülent Coşkun
Turkish Journal of Agriculture and Forestry
The relationships between aerodynamic properties such as vacuum pressure and suction speed and the fiber and physio-mechanical properties of cotton during harvesting were determined by using the Nazilli 84 cotton variety. Aerodynamic properties such as vacuum pressure and suction speed and physio-mechanical properties such as wet and dry lock masses, lock moisture, number of seeds per lock, carpel openness, carpel depth, carpel angle and force of lock break-off were measured. In addition fiber length, fiber strength, fiber elongation and fiber fineness were determined. The statistical relationships between the aerodynamic, physio-mechanical and fiber properties were also determined. It was observed that …
The Effect Of Tobacco Waste Application On The Physical And Chemical Properties Of Alkaline Soils, Kenan Kiliç, Kadi̇r Saltali, A. Kadi̇r Sürücü
The Effect Of Tobacco Waste Application On The Physical And Chemical Properties Of Alkaline Soils, Kenan Kiliç, Kadi̇r Saltali, A. Kadi̇r Sürücü
Turkish Journal of Agriculture and Forestry
This study was conducted to (i) determine the effect of tobacco waste application on the soil structure stability (SS), hydraulic conductivity (HC), bulk density, exchangeable sodium percentage (ESP), sodium adsorption ratio (SAR), and electrolyte concentration of alkaline soils, and (ii) observe the possibility of using tobacco waste for the reclamation of alkaline soils. The study was designed in randomized complete blocks with three replications and tobacco waste was applied at a rate of 0, 0.5, 1.5, 2.0 ton/ha to each block. The hydraulic conductivity and structure stability of the alkaline soils studied were substantially improved with increased rates of tobacco …
Efficiency Indicators In Irrigation Projects' Performance Evaluation: A Case Study On The Bursa Groundwater Irrigation Project, Seni̇h Yazgan, Hasan Deği̇rmenci̇
Efficiency Indicators In Irrigation Projects' Performance Evaluation: A Case Study On The Bursa Groundwater Irrigation Project, Seni̇h Yazgan, Hasan Deği̇rmenci̇
Turkish Journal of Agriculture and Forestry
Using the 1992-1996's irrigation results, 15 different physical, economic and institutional efficiency indicators were applied to the Bursa groundwater irrigation project to evaluate the performance of the system. A water supply ratio of 0.6-1.09, an irrigation ratio of 57-81%, a realized crop pattern ratio of 71-96.6%, a benefit-cost ratio of 2.5-10.0, a planned water supply ratio of 61-115.3%, a water-use per unit area of 5917.3-8701.3 m^3 ha^{-1}, a water fee collection ratio of 71-100%, a sustainable irrigated area ratio of 1.71, an output per unit command of $ 2628.7 ha^{-1} and output per cropped area of $ 4198.5 ha^{-1} were …
Production Of Dissolving Grade Pulp From Poplar Wood By Ethanol-Water Process, Hüseyi̇n Kirci, Mehmet Akgül
Production Of Dissolving Grade Pulp From Poplar Wood By Ethanol-Water Process, Hüseyi̇n Kirci, Mehmet Akgül
Turkish Journal of Agriculture and Forestry
The possibilities of dissolving grade pulp production from poplar by an ethanol-water process were investigated. The effects of ethanol ratio, cooking temperature and acid catalyst ratio on unbleached, bleached and alkali-purified pulps were studied. It was seen that catalyst ratios exceeding 0.01% caused serious yield and viscosity losses. The results showed that with the catalyst ratio to pulping liquor exceeding 0.01%, pulp yield and viscosity were reduced to an unacceptable level. The best pulping result was obtained at 40% ethanol consistency, 180 ºC pulping temperature and 150 min reaction time without the addition of acid catalyst to the pulping liquor. …
Effect Of Different Planting Times On Essential Oil Components Of Different Mint (Mentha Spp.) Varieties, Abdulhabi̇p Özel, Menşure Özgüven
Effect Of Different Planting Times On Essential Oil Components Of Different Mint (Mentha Spp.) Varieties, Abdulhabi̇p Özel, Menşure Özgüven
Turkish Journal of Agriculture and Forestry
This study was carried out to determine the effect of different planting times on the essential oil components of different mint varieties (Mentha arvensis var. piperascens, M. piperita Mitcham, M. piperita Eskişehir and M. piperita Prilubskaja). The field trials were conducted at the GAP Agricultural Research Station under Harran Plain conditions in 1993 and 1994. The mint oil components, a-pinene (0.49-1.00%), b-pinene (1.38-2.12%), 1,8-cineole (2.64-10.85%), menthone, menthofuran (28.09-49.52%), menthole (22.55-38.89%), pulegone (0.00-1.32%), menthyl acetate (0.46-6.78%) and b-caryophyllene (0.54-2.84%), were determined. The results indicated that the essential oil components were affected by planting times, mint varieties and cutting numbers. The highest …
Satellite Monitoring Of Land Cover / Land Use Change Over 15 Years And Its Impact On The Environment In Gebze / Kocaeli - Turkey, Hülya Yildirim, Mehmet Emi̇n Özel, Nalan Jale Di̇van, Alparslan Akça
Satellite Monitoring Of Land Cover / Land Use Change Over 15 Years And Its Impact On The Environment In Gebze / Kocaeli - Turkey, Hülya Yildirim, Mehmet Emi̇n Özel, Nalan Jale Di̇van, Alparslan Akça
Turkish Journal of Agriculture and Forestry
The rapid industrialisation of an area requires quick preparation of actual land-cover/land-use (LC/LU) maps in order to detect and avoid overuse and damaging of the landscape beyond sustainable development limits. Satellite Remote Sensing and Geographic Information System technologies fit very well for long-term monitoring and assessment of such effects. As a pilot area for the use of such technologies, Gebze district near metropolitan Istanbul is considered. The study is centred on the documentation of LC/LU changes resulting from fast and mostly unregulated industrialisation and urbanisation over the period 1986 - 1998 by satellite images of the area. A comparison is …
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 …
Selection Of Promising Jojoba (Simmondsia Chinensis Link Schneider) Types In Terms Of Yield And Oil Content, Sali̇h Ülger, Özgür Akdeşi̇r, İbrahi̇m Baktir
Selection Of Promising Jojoba (Simmondsia Chinensis Link Schneider) Types In Terms Of Yield And Oil Content, Sali̇h Ülger, Özgür Akdeşi̇r, İbrahi̇m Baktir
Turkish Journal of Agriculture and Forestry
This experiment was carried out to determine the yield and oil contents of jojoba populations that were derived from a base population raised from seed in Antalya between 1999 and 2001. In the first year 59 types were evaluated, and 19 promising types were determined. In the second and third years experiments were conducted on these 19 types. Chilling, insect and disease damage was not seen during the experiment periods. However, some plants were dead where water ponded after heavy rains. The mature seeds were hand collected after they fell onto the soil in September, and their yield and oil …
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 …
Application Of Direct Tissue Blot Immunoassay In Comparison With Das-Elisa For Detection Of Turkish Isolates Of Citrus Tristeza Closterovirus (Ctv), Savaş Korkmaz
Turkish Journal of Agriculture and Forestry
In this study, the direct tissue blot immunoassay (DTBIA) procedure was tested for the detection of 10 different Turkish isolates of the citrus tristeza virus (CTV) by employing monoclonal and polyclonal antibodies. The DAS-ELISA and DTBIA procedures were compared using two different monoclonal antibodies (3E10 and MCA-13) for 10 CTV isolates. The storage effects of blotted membranes on the blot assay were also investigated by using different temperatures (4 and 25 °C) and storage intervals (1, 2, 3 and 4 weeks). In addition, 258 Satsuma trees in one orchard were tested using ELISA and DTBIA. All polyclonal (1212-1, 981-1 and …
Quantitative Determination Of Alkyl Ketene Dimer (Akd) Retention In Paper Made On A Pilot Paper Machine, Ari̇f Karademi̇r
Quantitative Determination Of Alkyl Ketene Dimer (Akd) Retention In Paper Made On A Pilot Paper Machine, Ari̇f Karademi̇r
Turkish Journal of Agriculture and Forestry
There have been some problems reported associated with the use of alkyl ketene dimer (AKD) in alkali papermaking. Excessive use of size emulsion, poor size performance when filler used, problems with back water contamination, poor retention, and formation of pitch deposits on machinery are some of the problems experienced during papermaking operations. In addition, paper containing AKD is reported to lose its resistance, over time against liquid penetration and tends to become slippery. Therefore, in this study, the retention and reaction mechanisms of AKD internal sizing agent in a paper matrix were investigated by capillary gas chromatography (GC) in an …
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) …
An Evaluation Of Physically Based And Empirically Determined Evapotranspiration Models For Nursery Plants, Hali̇l Kirnak, R. C. Hansen, H. M. Keener, Ted Henry Short
An Evaluation Of Physically Based And Empirically Determined Evapotranspiration Models For Nursery Plants, Hali̇l Kirnak, R. C. Hansen, H. M. Keener, Ted Henry Short
Turkish Journal of Agriculture and Forestry
A lysimeter study was conducted to determine the evapotranspiration (ET) rates of Red Sunset red maple (Acer Rubrum 'Red Sunset') nursery trees under outdoor conditions in August and September 1997. The average ET rate was 0.084 mm day^{-1}. This measured ET rate was compared with calculated ET rates based on four physical ET (i.e., Penman, Penman-Monteith, Stanghellini and Fynn) and two empirically determined ET models (vapor pressure deficit (VPD) and solar radiation based empirical ET models). The Penman-Monteith and Penman models overestimated the measured ET rate by 15% and 31%, respectively while the Stanghellini and Fynn models underestimated the measured …
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 …
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 …
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 …