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Articles 1591 - 1620 of 2171
Full-Text Articles in Life Sciences
Detection And Characterization Of Plum Pox Potyvirus (Ppv) By Das-Elisa And Rt-Pcr / Rflp Analysis In Turkey, Gülşen Sertkaya, Çi̇ğdem Ulubaş Serçe, Kadri̇ye Çağlayan
Detection And Characterization Of Plum Pox Potyvirus (Ppv) By Das-Elisa And Rt-Pcr / Rflp Analysis In Turkey, Gülşen Sertkaya, Çi̇ğdem Ulubaş Serçe, Kadri̇ye Çağlayan
Turkish Journal of Agriculture and Forestry
This study was conducted to determine the presence of plum pox virus (PPV) (family Potyviridae, genus Potyvirus) in different regions of Turkey and to characterize PPV isolates by serological and molecular techniques, including ELISA and PCR/ RFLP. Thus, leaf samples from different stone fruit species (almond, apricot, nectarine, peach, plum and sour and sweet cherry) exhibiting various types of symptoms related to PPV were collected from different parts of the canopy from randomly selected orchards in the main stone fruit growing areas in Turkey, except for Malatya province. Polyclonal antibodies were used to detect the presence of PPV in the …
Determination Of The Salt Tolerance Of Some Barley Genotypes And The Characteristics Affecting Tolerance, Seydi̇ Ahmet Bağci, Hasan Eki̇z, Ahmet Yilmaz
Determination Of The Salt Tolerance Of Some Barley Genotypes And The Characteristics Affecting Tolerance, Seydi̇ Ahmet Bağci, Hasan Eki̇z, Ahmet Yilmaz
Turkish Journal of Agriculture and Forestry
The salt (NaCl) tolerance of 8 barley genotypes was investigated. Plants were grown hyroponically in Hoagland solution at 5 different NaCl concentrations. Germination percentage, shoot and root length, shoot and root dry weight, salt tolerance percentage, and K and Na concentrations in the shoots and roots were evaluated. Salt tolerance percentage, which is calculated from the germination percentage and dry weight production, was the most reliable criterion. On the other hand, with some exceptions, high K concentration and K/Na ratios were other potential criteria. Erginel-90 and WBELT-10 showed high levels of tolerance; and Obruk-86, Anadolu-86, Kıral-97 and Karatay-94 showed medium …
Correlation And Path Coefficient Analysis For Some Yield-Related Traits In Rice (Oryza Sativa L.) Under Thrace Conditions, Hali̇l Sürek, Necmi̇ Beşer
Correlation And Path Coefficient Analysis For Some Yield-Related Traits In Rice (Oryza Sativa L.) Under Thrace Conditions, Hali̇l Sürek, Necmi̇ Beşer
Turkish Journal of Agriculture and Forestry
The associations among yield components, and their direct and indirect influence on the grain yield of rice were investigated. For this purpose, 80 breeding lines derived from 11 different cross populations in the F_6 generation and their 10 parents were tested in a randomised complete block experiment design with two replications at the Thrace Agricultural Research Institute in 1995. According to the results from the first year, 49 breeding lines were selected, and they and their 10 parents were tested in a randomised complete block experiment design with three replications in the same institute in 1996. The phenotypic correlations among …
The Role Of Eicosanoids On Nodulation Reactions To Bacterium Serratia Marcescens In Larvae Of Ostrinia Nubilalis, Hasan Tunaz, Ali̇ Arda Işikber, Mehmet Kubi̇lay Er
The Role Of Eicosanoids On Nodulation Reactions To Bacterium Serratia Marcescens In Larvae Of Ostrinia Nubilalis, Hasan Tunaz, Ali̇ Arda Işikber, Mehmet Kubi̇lay Er
Turkish Journal of Agriculture and Forestry
Nodulation is the first step of the cellular defense reactions to bacterial infections in insects. In the present study, injecting larvae of the European corn borer, Ostrinia nubilalis, with eicosanoid biosynthesis inhibitors, immediately prior to intrahemocoelic injections of the bacterium, Serratia marcescens, sharply reduced the nodulation response to bacterial challenges. Separate treatments with specific inhibitors including dexamethasone (a phospholipase A_2 inhibitor), indomethacin (a cyclooxygenase inhibitor) and phenidone (a dual cyclooxgenase/lipoxygenase inhibitor) also impaired the ability of European corn borers to form nodules in reaction to bacterial challenges. The inhibitory influence of phenidone was apparent within 30 mins after infection, and …
Effects Of Boron Fertilization On The Yield And Some Yield Components Of Bread And Durum Wheat, Aydin Güneş, Mehmet Alpaslan, Ali̇ İnal, M. Sai̇t Adak, Fi̇gen Eraslan, Nuray Çi̇çek
Effects Of Boron Fertilization On The Yield And Some Yield Components Of Bread And Durum Wheat, Aydin Güneş, Mehmet Alpaslan, Ali̇ İnal, M. Sai̇t Adak, Fi̇gen Eraslan, Nuray Çi̇çek
Turkish Journal of Agriculture and Forestry
A greenhouse and a 1-year field study were conducted during the cropping season on the effects of B on yield and some yield components of bread (Triticum aestivum L, cv. Bezostaja) and durum (Triticum durum L. cv. Kiziltan) wheat cultivars in a B-deficient soil (0.68 mg kg^{-1}, NH4OAc extractable). Boron was applied as H_3BO_3 at 0, 0.5, 1.0, 1.5, 2.0 and 2.5 mg B kg^{-1} in the greenhouse study and 0, 1.0, 2.0, 3.0, 4.0 and 5.0 kg B ha^{-1} in the field study. Shoot dry weights of Bezostaja and Kiziltan significantly increased regardless of the applied B levels in …
The Effects Of Sewage Sludge Applications On The Yield,Growth, Nutrition And Heavy Metal Accumulation In Apple Trees Growing In Dry Conditions, Mehmet Ali̇ Bozkurt, Tarik Yarilgaç
The Effects Of Sewage Sludge Applications On The Yield,Growth, Nutrition And Heavy Metal Accumulation In Apple Trees Growing In Dry Conditions, Mehmet Ali̇ Bozkurt, Tarik Yarilgaç
Turkish Journal of Agriculture and Forestry
The effects of various sewage sludge (biosolid) rates and a single dose barnyard manure application on the fruit yield, growth, nutrition and heavy metal accumulation of apple trees were investigated. The experiment was conducted using a completely randomized design with 4 replicates in dry conditions in Van, in the East Anatolia region of Turkey in 2000 and 2001. Sewage sludge was added to the soil at the rates of 0, 10, 20, 40 and 60 kg tree^{-1}. Barnyard manure was applied to the soil at a rate of 25 kg tree^{-1}. Two years' data showed that the addition of sewage …
Risk Attitudes Of Farmers In Terms Of Risk Aversion: A Case Study Of Lower Seyhan Plain Farmers In Adana Province, Turkey, Turan Bi̇ni̇ci̇, A. Ali̇ Koç, Carl R. Zulauf, Ahmet Bayaner
Risk Attitudes Of Farmers In Terms Of Risk Aversion: A Case Study Of Lower Seyhan Plain Farmers In Adana Province, Turkey, Turan Bi̇ni̇ci̇, A. Ali̇ Koç, Carl R. Zulauf, Ahmet Bayaner
Turkish Journal of Agriculture and Forestry
Exploring the attitude of farmers toward risk is important in understanding their managerial decisions, especially given the exposure of farmers to risky events such as drought. However, a survey of the literature finds no study of the risk attitudes of farmers in Turkey. Therefore, this study examines the risk attitudes of farmers in the Lower Seyhan Plain of Turkey. While some variation by utility function exists in the classification of the sampled farmers into risk averse and risk preferring categories, the overwhelming evidence is that the sampled farmers are risk averse. One hundred eighty-two out of 200 estimated Arrow-Pratt risk …
Selection Of Chickpea (Cicer Arietinum L.) Genotypes For Resistance To Ascochyta Blight [Ascochyta Rabiei (Pass.) Labr.], Yield And Yield Criteria, Cengi̇z Toker, Hüseyi̇n Çanci
Selection Of Chickpea (Cicer Arietinum L.) Genotypes For Resistance To Ascochyta Blight [Ascochyta Rabiei (Pass.) Labr.], Yield And Yield Criteria, Cengi̇z Toker, Hüseyi̇n Çanci
Turkish Journal of Agriculture and Forestry
Ascochyta blight, caused by Ascochyta rabiei (Pass.) Lab., is the most important disease in the chickpea (Cicer arietinum L.) in many countries, including Turkey. Efforts to control the disease were made using host-plant resistance as the most efficient and economical way. A total of 41 exotic genotypes were evaluated for resistance to A. rabiei and also yield and yield criteria near Antalya in the west Mediterranean region of Turkey in the 2000-2001 and 2001-2002 seasons. After every 2 test lines, the susceptible check ILC 263 was sown. When the susceptible check was completely killed by ascochyta blight, blight severity was …
Effects Of Seedling And Gf-31 Rootstocks On Yield And Fruit Quality Of Some Table Apricot Cultivars Grown In Mersin, Levent Son, Ali̇ Küden
Effects Of Seedling And Gf-31 Rootstocks On Yield And Fruit Quality Of Some Table Apricot Cultivars Grown In Mersin, Levent Son, Ali̇ Küden
Turkish Journal of Agriculture and Forestry
This experiment was conducted in Mut-Mersin between 1997 and 2001 to determine the effects of seedling and GF-31 rootstocks on the yield and quality of fruits of Tokaloğlu, Precoce De Tyrinthe, Joubert Foulon, Canino, Sakıt 6, Beliana, Priana and Early Kishnevski table apricot cultivars. Fruit yields were highest on apricot seedling rootstocks for all cultivars. Yields (kg tree^{-1}) ranged between 14.66 kg (Tokaloğlu) and 63.06 kg (Priana) on apricot seedling rootstocks and between 13.6 kg (Sakıt 6) and 41.13 kg (Priana) on Myrobalan GF-31 rootstock in 2001. Of the cultivars tested, Priana gave the highest yield (kg tree^{-1}), except in …
Assessment Of Irrigation Schemes With Comparative Indicators In The Southeastern Anatolia Project, Hasan Deği̇rmenci̇, Hakan Büyükcangaz, Hayretti̇n Kuşcu
Assessment Of Irrigation Schemes With Comparative Indicators In The Southeastern Anatolia Project, Hasan Deği̇rmenci̇, Hakan Büyükcangaz, Hayretti̇n Kuşcu
Turkish Journal of Agriculture and Forestry
In this study, 6 comparative indicators for the assessment of irrigation system performance were applied to 12 irrigation schemes, which were components of the Southeastern Anatolian Project, for the period 1997-2001. The output per unit cropped area, output per unit command, output per unit irrigation supply, output per unit water consumed, relative water supply and irrigation ratio were calculated as 1223-9436 $ ha^{-1}, 308-5771 $ ha^{-1}, 0.12-2.16 $ m^{-3}, 0.45-2.92 $ m^{-3}, 1.00-5.90, and 7-100%, respectively. ANOVA test results indicated that among the schemes the differences in the output per unit cropped area, output per unit irrigation supply, output per …
An Econometric Analysis Of Apricot Supply And Export Demand In Turkey, İlkay Dellal, A. Ali̇ Koç
An Econometric Analysis Of Apricot Supply And Export Demand In Turkey, İlkay Dellal, A. Ali̇ Koç
Turkish Journal of Agriculture and Forestry
This study estimates a supply model for apricots and an export demand model for dried apricots for Turkey to provide unit-free measure coefficients for better supply and marketing management. Using parameter estimates from the models and sample average data, elasticities of long-run supply, price-yield and export of dried apricots were computed as 0.72, 0.54 and -0.87 respectively. From the price dependent export demand model, the price flexibility of dried apricots was calculated as -0.71. In this study, the import demand elasticities of dried apricots for major destination countries were estimated and found to be inelastic. An evaluation of aggregated household …
Comparative Genetics Of Crop Plant Domestication And Evolution, Anne Frary, Sami̇ Doğanlar
Comparative Genetics Of Crop Plant Domestication And Evolution, Anne Frary, Sami̇ Doğanlar
Turkish Journal of Agriculture and Forestry
Domesticated species differ from their wild ancestors and relatives for a set of traits that is known as the domestication syndrome. The most important syndrome traits include growth habit, flowering time, seed dispersal, gigantism and morphological diversity. This paper reviews what is known about the genetic control of domestication traits with an emphasis on comparative analyses that examine this control in two or more crop species. Such analyses indicate that although most domestication traits are quantitatively controlled, the dramatic morphological changes that accompanied domestication may be due to relatively few genes. These studies also show that domestication genes have been …
Qtl Mapping And Analysis Of Qtl X Nitrogen Interactions For Some Yield Components In Brassica Napus L., Muhammet Kemal Gül
Qtl Mapping And Analysis Of Qtl X Nitrogen Interactions For Some Yield Components In Brassica Napus L., Muhammet Kemal Gül
Turkish Journal of Agriculture and Forestry
Nitrogen (N) plays a critical role in crop production. Nowadays, it is possible to detect quantitative trait loci (QTL), as well as their effects and positions on chromosomes, by new molecular and biometrical methods. A doubled haploid rapeseed population of 142 lines from the doubled winter rapeseed cultivars Mansholt's and Samourai, and a framework map derived from an RFLP map were used for the analysis of QTL and their interactions with N in terms of some yield components obtained from field trials in Brassica napus L. The interactions between traits and N were determined by variance analysis. Two QTL for …
Effect Of Growth Season On Forage Yields Of Different Brassica Cultivars Under Ankara Conditions, Suzan Altinok, Azi̇z Karakaya
Effect Of Growth Season On Forage Yields Of Different Brassica Cultivars Under Ankara Conditions, Suzan Altinok, Azi̇z Karakaya
Turkish Journal of Agriculture and Forestry
This research was carried out at the experimental field of Ankara University, Faculty of Agriculture, Department of Field Crops in Turkey in 1997 and 1998. Spring and summer seedings were employed in both years. The introduced kale cultivars Vates, Siberian and Premier (Brassica oleracea L. var. acephala), forage rape cultivar Emerald (Brassica rapa L.) and Collard cultivars Vates, Champion and Georgia Southern (Brassica oleracea L.) were used as the research materials. The effect of the growth season on forage Brassica yields was evident, and generally the yields of summer-grown cultivars were higher. The highest forage yields and crude protein contents …
Effects Of Water Stress On Germination In Six Provenances Of Pinus Brutia Seeds From Different Bioclimatic Zones In Turkey, Meli̇h Boydak, Hüseyi̇n Di̇ri̇k, Fahretti̇n Ti̇lki̇, Mehmet Çalikoğlu
Effects Of Water Stress On Germination In Six Provenances Of Pinus Brutia Seeds From Different Bioclimatic Zones In Turkey, Meli̇h Boydak, Hüseyi̇n Di̇ri̇k, Fahretti̇n Ti̇lki̇, Mehmet Çalikoğlu
Turkish Journal of Agriculture and Forestry
The effects of water potential on germination were studied in six provenances of Pinus brutia from different bioclimatic zones in Turkey. Water potentials between 0 and -8 bars were obtained using polyethylene glycol 6000 (PEG-6000) solutions. Seeds were kept for 28 d in light (12 h photoperiod at 1000 lux) and at 20 ± 0.5 ^oC. A decrease in water potential produced a marked reduction in germination percentage, germination speed and germination value. Significant variations between the provenances were found. The provenances of humid regions were the most susceptible to high moisture stress, and their germination value and germination percentage …
Effects Of Some Manufacturing Factors On The Properties Of Particleboard Manufactured From Alder (Alnus Glutinosa Subsp. Barbata), Gökay Nemli̇
Turkish Journal of Agriculture and Forestry
In this study, Alder (Alnus glutinosa subsp.Barbata) wood was used for particleboard manufacturing. The purpose of this study was to determine the effects of particle moisture content, shelling ratio and the addition of wood dust on the mechanical properties (static bending, modulus of elasticity and internal bond) and physical property (thickness swelling) of particleboard. The addition of 10% wood dust to particles decreased the thickness swelling, modulus of elasticity and bending strength, while increasing the internal bond. Particleboards manufactured from particles with 1% moisture content had lower internal bond, modulus of elasticity and bending strength and higher thickness swelling values …
Soil Erosion Risk Assessment With Icona Model; Case Study: Beypazarı Area, İlhami̇ Bayrami̇n, Orhan Dengi̇z, Oğuz Başkan, Mehmet Parlak
Soil Erosion Risk Assessment With Icona Model; Case Study: Beypazarı Area, İlhami̇ Bayrami̇n, Orhan Dengi̇z, Oğuz Başkan, Mehmet Parlak
Turkish Journal of Agriculture and Forestry
In this research, the applicability of geographic information system (GIS) and remote sensing (RS) techniques was tested to assess soil erosion risk with the ICONA erosion model. This study was carried out in the Ankara-Beypazarı area because of its variety of diverse landforms, land uses and land covers. The erosion risk assessment phase of this model consists of seven steps that mainly use slope, geology, land use and land cover information. A potential erosion risk map (step 3) was obtained from the slope (step 1) and lithofacies layers (step 2) generated using a digital elevation model (DEM) and digital geological …
Analysis Of The Marketing Structure Of The Dairy Industry In The Trakya Region And The Determination Of Emerging Issues With Multidimensional Scaling, M. Ömer Azabağaoğlu, Okan Gaytanci̇oğlu, Ahmet Kubaş, Recep Erbay
Analysis Of The Marketing Structure Of The Dairy Industry In The Trakya Region And The Determination Of Emerging Issues With Multidimensional Scaling, M. Ömer Azabağaoğlu, Okan Gaytanci̇oğlu, Ahmet Kubaş, Recep Erbay
Turkish Journal of Agriculture and Forestry
The purpose of this paper is to examine the marketing structure of milk processors, factors influencing production and problems faced by firms following recent economic conditions in the Trakya region. Dairy cattle production is more developed in the research area than in other regions. In addition, the region has played an important role with its high milk processing capacity. The research results indicate that the dairy industry has important problems, such as an insufficient and low quality milk supply, and poor hygiene and marketing. In particular, a large number of small-and medium-sized milk processors face extensive hygiene and marketing problems. …
Effect Of Thermal Screens On The Microclimate And Overall Heat Loss Coefficient In Plastic Tunnel Greenhouses, H. Hüseyi̇n Öztürk, Ali̇ Başçeti̇nçeli̇k
Effect Of Thermal Screens On The Microclimate And Overall Heat Loss Coefficient In Plastic Tunnel Greenhouses, H. Hüseyi̇n Öztürk, Ali̇ Başçeti̇nçeli̇k
Turkish Journal of Agriculture and Forestry
The objective of the present study was to evaluate the effects of thermal screens made of clear polyethylene (PE) and polyester material on the microclimate and overall heat loss coefficient in plastic tunnel greenhouses. The dimensions of the plastic tunnels were: width 6 m, length 20 m and height 3 m. Three different installations were used: (1) a single cover without a screen (as a control); (2) a single cover with a PE screen; and (3) a single cover with a polyester screen. The thermal screens made of PE with UV+IR additives and polyester materials were placed at a height …
A Remote Sensing Approach For Detecting Agricultural Encroachment On The Eastern Mediterranean Coastal Dunes Of Turkey, Süha Berberoğlu, Hakan Alphan, Kemal Tuluhan Yilmaz
A Remote Sensing Approach For Detecting Agricultural Encroachment On The Eastern Mediterranean Coastal Dunes Of Turkey, Süha Berberoğlu, Hakan Alphan, Kemal Tuluhan Yilmaz
Turkish Journal of Agriculture and Forestry
The aim of this study was to develop an effective procedure for detecting land use/land cover (LU/LC) changes resulting from agricultural encroachment on eastern Mediterranean coastal dunes by using remote-sensing techniques. Historic LU/LC information was extracted from aerial photos taken in 1976 and IKONOS imagery was acquired in 2002 to determine the current LU/LC pattern. The remotely sensed aerial and satellite data were classified by integrating spectral information with measures of texture, in the form of statistics derived from the variance, co-occurrence matrix and variogram. The performance of these classification approaches was evaluated in terms of error matrices. The accuracy …
Geographic Information System And Remote Sensing Based Land Evaluation Of Beypazarı Area Soils By Ilsen Model, Orhan Dengi̇z, İlhami̇ Bayrami̇n, Mahmut Yüksel
Geographic Information System And Remote Sensing Based Land Evaluation Of Beypazarı Area Soils By Ilsen Model, Orhan Dengi̇z, İlhami̇ Bayrami̇n, Mahmut Yüksel
Turkish Journal of Agriculture and Forestry
Land evaluation is of great importance in guiding decisions on land uses in terms of their potential and conserving natural resources for future generations. The main objective of this study was to determine land resources and to evaluate land utilization types and their suitability in Beypazarı area soils. In addition to field studies, digital soil and land use related (satellite data, DEM and digital geology maps) data were used and analyzed with remote sensing (RS) and geographic information systems (GIS) techniques and a new digital soil map and database were generated for the study area. Soils were classified using soil …
Determining The Strength Properties Of The Dixired Peach Variety, Kubi̇lay K. Vursavuş, Faruk Özgüven
Determining The Strength Properties Of The Dixired Peach Variety, Kubi̇lay K. Vursavuş, Faruk Özgüven
Turkish Journal of Agriculture and Forestry
Peaches, like other fruits, are susceptible to different kinds of damage during and after harvest. Such damage is a major cause of quality loss in fruit. In order to reduce these losses, it is necessary to know the strength properties of fruit. Some strength properties of "Dixred" peaches are investigated in this paper. Peaches were stored at 0 ºC and 90% relative humidity for specified lengths of time. Impact treatment was applied by a pendulum impactor at four energy levels. Bruise volume was measured in the bruised peaches after impact, and bruise susceptibility was calculated from the linear regression line …
Effect Of Cadmium On Growth And Concentrations Of Cadmium, Ascorbic Acid And Sulphydryl Groups In Durum Wheat Cultivars, Levent Öztürk, Seli̇m Eker, Faruk Özkutlu, İsmai̇l Çakmak
Effect Of Cadmium On Growth And Concentrations Of Cadmium, Ascorbic Acid And Sulphydryl Groups In Durum Wheat Cultivars, Levent Öztürk, Seli̇m Eker, Faruk Özkutlu, İsmai̇l Çakmak
Turkish Journal of Agriculture and Forestry
By using two durum wheat cultivars (Triticum durum L. cvs. Balcali-85 and C-1252) a nutrient solution experiment was carried out to study i) genotypic variation in cadmium (Cd) tolerance, ii) Cd concentrations in plants, and iii) the role of ascorbic acid and non-protein SH groups (SH: sulphydryl) in Cd tolerance. Plants were grown under controlled climatic conditions for 15 days and subjected to increasing Cd supply (0, 6, 30, 75 and 150 µM). Of the two cultivars, C-1252 showed greater sensitivity to Cd toxicity as judged from the severity of Cd toxicity symptoms on leaves. Increasing Cd supply markedly reduced …
Effects Of Seed Rates On Forage Production, Seed Yield And Hay Quality Of Annual Legume-Barley Mixtures, Yaşar Karadağ, Uğur Büyükburç
Effects Of Seed Rates On Forage Production, Seed Yield And Hay Quality Of Annual Legume-Barley Mixtures, Yaşar Karadağ, Uğur Büyükburç
Turkish Journal of Agriculture and Forestry
The forage yield and quality of common vetch, grasspea and barley grown alone and as mixtures were investigated in field experiments conducted at the Faculty of Agriculture, Gaziosmanpaşa University, in 2001 and 2002. The highest green forage (39.65 t ha^{-1}) and dry matter yields (10.71 t ha^{-1}) were obtained from the mixture including 25% common vetch and 75% barley, while the highest total seed yield (2.95 t ha^{-1}) was obtained from the mixture including 25% grasspea and 75% barley. In addition, the highest crude protein yield (1.53 t ha^{-1}) was achieved with the 50% grasspea and 50% barley mixture. The …
Improving The Mass Rearing Possibilities Of Serangium Montazerii Fürsch (Coleoptera: Coccinellidae) On Different Host Plants Of Bemisia Tabaci (Genn.) (Homoptera: Aleyrodidae), Gonca Vatansever, M. Rifat Ulusoy, Lerzan Bakircioğlu Erkiliç
Improving The Mass Rearing Possibilities Of Serangium Montazerii Fürsch (Coleoptera: Coccinellidae) On Different Host Plants Of Bemisia Tabaci (Genn.) (Homoptera: Aleyrodidae), Gonca Vatansever, M. Rifat Ulusoy, Lerzan Bakircioğlu Erkiliç
Turkish Journal of Agriculture and Forestry
The objectives of this study were to identify suitable plant species for mass rearing and to determine some biological characteristics of the predator Serangium montazerii Fürsch (Coleoptera: Coccinellidae) used in the biological control of Dialeurodes citri (Ashmead) (Homoptera: Aleyrodidae). The development time, mortality rate, preoviposition, oviposition and postoviposition periods and fecundity of S. montazerii were studied on various host plants using Bemisia tabaci (Genn.) (Homoptera: Aleyrodidae). Two cotton (Çukurova-1518 and Deltapine) and two eggplant (Pala and Çukurova topağı) cultivars were used at 25 ºC and 65 ± 5% RH in growth chambers. Additionally, life tables were constructed from the data …
Studies On Lignin-Based Adhesives For Particleboard Panels, Ni̇hat Sami̇ Çeti̇n, Ni̇lgül Özmen
Studies On Lignin-Based Adhesives For Particleboard Panels, Ni̇hat Sami̇ Çeti̇n, Ni̇lgül Özmen
Turkish Journal of Agriculture and Forestry
The ultimate aim of this work was to develop a phenolic resin for partially replacing phenol with modified organosolv lignin in phenol-formaldehyde (PF) resin production. The lignin-formaldehyde relationship was determined in a reactivity test. Organosolv lignin-phenol-formaldehyde (LPF) resins were produced in a two-step preparation with different additions of lignin. The method selected for the manufacture of lignin resins dealt with modification of the lignin by the methylolation route. The effects of different substitution levels of organosolv lignin on strength properties were evaluated by testing lignin resin impregnated paper strips. A comparison of the tensile properties of organosolv lignin formulations, impregnated …
Nitrogen Fertiliser Recovery And Yield Response Of Greenhouse Grown And Fertigated Tomato To Root - Zone Soil Water Tension, Cevat Kirda, Nafi̇ Baytorun, M. Rifat Deri̇ci̇, H. Yildiz Daşgan, Çağatay Tanriverdi̇, Zekai̇ Gümüş
Nitrogen Fertiliser Recovery And Yield Response Of Greenhouse Grown And Fertigated Tomato To Root - Zone Soil Water Tension, Cevat Kirda, Nafi̇ Baytorun, M. Rifat Deri̇ci̇, H. Yildiz Daşgan, Çağatay Tanriverdi̇, Zekai̇ Gümüş
Turkish Journal of Agriculture and Forestry
Tomatoes were grown in a plastic greenhouse under 2 irrigation programmes and four N-fertiliser concentrations (0, 100, 150 and 200 mg N l^{-1}) of irrigation water. P and K concentrations were kept constant at 30 and 200 mg l^{-1}, respectively, for all N treatments. A drip irrigation system with single laterals centred between the plant rows, spaced 50 cm apart was used for irrigation as well as for feeding fertiliser solution (i.e. fertigation) during the experiment. Tensiometers, installed in 3 replicates at 45 cm soil depth and centred mid-way between 2 plants in rows, were used for irrigation scheduling. Two …
Determination Of Superior Parents And Hybrid Combinations In Respect To Lint Yield And Yield Components In Cotton (Gossypium Hirsutum L.), Mehmet Mert, Oktay Gençer, Yaşar Akişcan, Kenan Boyaci
Determination Of Superior Parents And Hybrid Combinations In Respect To Lint Yield And Yield Components In Cotton (Gossypium Hirsutum L.), Mehmet Mert, Oktay Gençer, Yaşar Akişcan, Kenan Boyaci
Turkish Journal of Agriculture and Forestry
The purpose of this study was to determine estimates of the general combining ability of parents and the specific combining ability of hybrids needed to develop high yielding cotton cultivars. Five cotton lines (Sure Grow 125, Sure Grow 404, Sure Grow 501, Sure Grow 1001 and Çukurova 1518) and 7 testers (PAUM 400, PAUM 401, PAUM 402, PAUM 403, PAUM 404, PAUM 405 and PAUM 406) were crossed in a line x tester mating system at Çukurova University, Cotton Research and Application Center, Adana, Turkey, in 2000. Twelve genotypes and 35 F_1 hybrids were sown in a randomized complete block …
Comparison Of The Performance Of Autumn And Spring Sowing Of Chickpeas In A Temperate Region, Sai̇m Özdemi̇r, Ufuk Karadavut
Comparison Of The Performance Of Autumn And Spring Sowing Of Chickpeas In A Temperate Region, Sai̇m Özdemi̇r, Ufuk Karadavut
Turkish Journal of Agriculture and Forestry
The effects of autumn and spring sowing on chickpea yield were investigated by examining yield components in a 2-year (2000-2001 and 2001-2002 growing seasons) field experiment in a temperate region, in north-west Turkey. Twenty-one chickpea genotypes (2 registered varieties of winter type for the Mediterranean region and 19 breeding lines) were evaluated in 2 sowing seasons (autumn and spring). Autumn-sown crops were subjected to -2.1 °C and snow cover twice (2 and 4 days) in the first year and -7.6 °C and snow cover 3 times (8, 14 and 6 days) in the second year. All genotypes were resistant to …
Kinetics Of Nonenzymatic Browning Reaction In Citrus Juice Concentrates During Storage, Nuray Koca, Hande Selen Burdurlu, Feryal Karadeni̇z
Kinetics Of Nonenzymatic Browning Reaction In Citrus Juice Concentrates During Storage, Nuray Koca, Hande Selen Burdurlu, Feryal Karadeni̇z
Turkish Journal of Agriculture and Forestry
The kinetics of nonenzymatic browning in citrus juice concentrates (orange, lemon, grapefruit and tangerine) during 8 weeks of storage at 28, 37 and 45 ºC were investigated. Browning development was followed by measuring absorbance at 420 nm (A_{420}) and using CIE-Lab color system. Analysis of kinetic data from A_{420} values suggested a zero-order reaction for nonenzymatic browning, while changes in L* and b* parameters followed a first-order reaction. Activation energy for nonenzymatic browning determined by A_{420} values ranged from 17.60 to 35.27 kcal mol^{-1}, while those for L* and b* parameters were 6.67-28.99 kcal mol^{-1} and 15.38-34.2 kcal mol^{-1}, respectively. …