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Variations Of Fatty Acid Composition According To Some Morphological And Physiological Properties And Ecological Regions In Oilseed Plants, Hasan Baydar, İsmai̇l Turgut
Variations Of Fatty Acid Composition According To Some Morphological And Physiological Properties And Ecological Regions In Oilseed Plants, Hasan Baydar, İsmai̇l Turgut
Turkish Journal of Agriculture and Forestry
Fatty acid composition of 14 different vegetable oils obtained from sunflower (Helianthus annuus L.), safflower (Carthamus tinctorius L.), soybean (Glycine max (L.) Merr.), corn (Zea mays L.), peanut (Arachis hypogaea L.), sesame (Sesamum indicum L.), cotton (Gossypium hirsitum L.), rape (Brassica napus L.), poppy (Papaver somniferum L.), tabacco (Nicotiana tabacum L.), cephalaria (Cephelaria syriaca L.), flax (Linum usitatissimum L.) and camalia (Camalina sativa L.) seeds and olive (Olea europea L.) were compared in this study. The position effects in safflower, different seed colours in sesame and poppy, seed development stages in rape and different ecological local varieties in sesame were …
Effect Of The Environmental Temperature On The Degradation Period Of Carbaryl, Ahmet Uyanik, Mustafa Özdemi̇r
Effect Of The Environmental Temperature On The Degradation Period Of Carbaryl, Ahmet Uyanik, Mustafa Özdemi̇r
Turkish Journal of Agriculture and Forestry
In this study, the effect of the temperature on the degradation period of Carbaryl (Sevin), a widely used outdoor and indoor insecticide, was investigated in a laboratory in soil and on green plants by using a new quantitative TLC (Thin Layer Chromatography) method. The experimental temperature conditions were 40°C , 16°C and 5°C for soil and 15°C for green plants. The results which were evaluated by photocopying of the TLC spots on a graph paper and square counting showed that carbaryl degradation is a first order reaction and the temperature dependent half-life of the degradation takes grater than four weeks …
The Effects Of Wood Bleaching Chemicals On Thebending Strength Of Wood, Burhanetti̇n Uysal, Musa Atar, Ayhan Özçi̇fçi̇
The Effects Of Wood Bleaching Chemicals On Thebending Strength Of Wood, Burhanetti̇n Uysal, Musa Atar, Ayhan Özçi̇fçi̇
Turkish Journal of Agriculture and Forestry
The aim of this research was to determine the effects of bleaching chemicals on the bending strength of wood. For this purpose, sodium hydroxide + hydrogen peroxide, sodium hydroxide + calcium hydroxide + hydrogen peroxide, hypochlorite and hydrochloric acid were applied to pine (Pinus sylvestris L.), oriental beech (Fagus orientalis Lipsky), ash (Fraxinus excelsior L.) and oak (Quercus petraea spp.) for bleaching. The results indicate that the hypochlorite and hydrochloric acid solutions caused the greatest decrease in the bending strength of the woods used in the experiment.
Shear And Bending Strength Of Some End To End Grained Jointsprepared From Scotch Pine, Hani̇fi̇ Tokgöz, Ayhan Özçi̇fçi̇, Musa Atar, Burhanetti̇n Uysal
Shear And Bending Strength Of Some End To End Grained Jointsprepared From Scotch Pine, Hani̇fi̇ Tokgöz, Ayhan Özçi̇fçi̇, Musa Atar, Burhanetti̇n Uysal
Turkish Journal of Agriculture and Forestry
This study was carried out to determine the shear and bending strength of different end-to-end grain joints, which were glued with PVAc (polyvinyl acetate). For this reason, specimens, prepared from scotch pine (Pinus sylvestris l), were made with three types of end to end grain joints namely: half-lap, mortise and tenon and double mortise-and-tenon. End-to-end grain of half-lap joints gave the highest strength in shear (2.385 N/mm 2 ) and bending (0.540 N/mm 2 ) experiments.
Development And Fecundity Of Aphis Gossypii Glover (Homoptera: Aphididae) On Three Malvaceae Hosts, Serdar Satar, Ulrich Kersting, Nedi̇m Uygun
Development And Fecundity Of Aphis Gossypii Glover (Homoptera: Aphididae) On Three Malvaceae Hosts, Serdar Satar, Ulrich Kersting, Nedi̇m Uygun
Turkish Journal of Agriculture and Forestry
Aphis gossypii Glover (Homoptera, Aphididae) obtained from cotton fields near Adana in the east Mediterranean region of Turkey were colonized on Gossypium hirsutumL. Çukurova 1518 in a climatic room. The effect of host transfer from cotton to common mallow, Malva sylvestris L., and okra, Abelmoschus esculentus (L.) Moench 'Bamya 501', on performance of A. gossypii was studied at constant 25 ± 1°C, 60 ± 5 % relative humidity and 16 h of artificial light (5000 lux) in temperature cabinets. Three subsequent generations of A. gossypii from cotton were additionally tested on okra. Fecundity tables were constructed to compare the performance …
The Effects Of Different Amino Acid Chelate Foliar Fertilizers On Yield, Fruit Quality, Shoot Growth And Fe, Zn, Cu, Mn Content Of Leaves In Williams Pear Cultivar ( Pyrus Communis L.), A. İlhami̇ Köksal, Hati̇ce Dumanoğlu, Nurdan Tuna Güneş, Mehmet Aktaş
The Effects Of Different Amino Acid Chelate Foliar Fertilizers On Yield, Fruit Quality, Shoot Growth And Fe, Zn, Cu, Mn Content Of Leaves In Williams Pear Cultivar ( Pyrus Communis L.), A. İlhami̇ Köksal, Hati̇ce Dumanoğlu, Nurdan Tuna Güneş, Mehmet Aktaş
Turkish Journal of Agriculture and Forestry
In this study, utility opportunities of three different amino acid chelate foliar fertilizers in Williams pear trees ( Pyrus communis L.) on seedling for reduction in yield, fruit quality and growth resulted from direct irregularities such as yellowing, browning and falling of leaves in early season were investigated. By this aim, the effects of fertilizers applied three times at 15 days of intervals on total yield, yield per trunk cross section unit area, fruits size, firmness, total soluble solids and titretable acidity, shoot length and Fe, Zn, Cu, Mn content of leaves were determined. Especially amino acid chelated-Fe increased total …
Research On Yield, Essential Oil, Contents And Components Of Mint (Mentha) Species Indifferent Ecologies, Menşure Özgüven, Sali̇ha Kirci
Research On Yield, Essential Oil, Contents And Components Of Mint (Mentha) Species Indifferent Ecologies, Menşure Özgüven, Sali̇ha Kirci
Turkish Journal of Agriculture and Forestry
Mint oil demand is met by imports in Turkey. For this reason, this study was conducted to determine yields and essential oil contents and components of different Mentha piperita cultivars ( M. piperita Ucrainica, M. piperita Mitcham , M. piperita Bulgaristan 36, M. piperita Multimentha, M. piperita Prilubskaja-I) and Mentha species ( M. arvensis var. piperascens (L.), M. aquatica, M. spicata ssp. spicata) in Adana and Pozanti ecological conditions over two years. In Adana, they were harvested twice in the first year and once in the second year. In Pozanti, they were harvested once in both years. The total fresh …
The Effect Of Drought On The Growth And Yield Of Winter Wheat, Ali̇ Öztürk
The Effect Of Drought On The Growth And Yield Of Winter Wheat, Ali̇ Öztürk
Turkish Journal of Agriculture and Forestry
The effect of drought on the growth and yield of "Dogu-88" winter wheat variety was investigated in this field experi-ment using plot covers. Fully irrigated (FI), rainfed (R), early drought (ED), late drought (LD) and continuous drought (CD) treat-ments were studied under Erzurum conditions. ED decreased grain number per unit area by 44.4 %, 1000 kernel weight by 6.9 % and grain yield by 40.6 % compared with FI. A rapid senescence of green tissues in LD treatment also led to shorter green area duration (27.5 days), lighter 1000 kernel weight (3.8 g) and lower grain yield (24.0 %). CD …
Effects Of Timing, Iba And Putrescine On Rooting And Shooting In Pyrus Elaeagrifolia Pall., Softwood Cuttings, Hati̇ce Dumanoğlu, Ahmet Aygün, Ayşen Alay, Nurdan Tuna Güneş, Mücahi̇t Taha Özkaya
Effects Of Timing, Iba And Putrescine On Rooting And Shooting In Pyrus Elaeagrifolia Pall., Softwood Cuttings, Hati̇ce Dumanoğlu, Ahmet Aygün, Ayşen Alay, Nurdan Tuna Güneş, Mücahi̇t Taha Özkaya
Turkish Journal of Agriculture and Forestry
The effects of 0, 1000, 4000, 8000 and 10000 ppm IBA, and the combination of 150 ppm putrescine with 4000 and 8000 ppm IBA on the rooting and shooting of softwood cuttings was examined. The cutting were at three different times, from both "Ahlat 1" (grey ahlat) and "Ahlat 2" (bright ahlat) types of Pyrus elaeagrifolia Pall. and from the "Ankara" pear cultivar of Pyrus communis L. The best results for both types of Pyrus elaeagrifolia Pall. were obtained in the first set of softwood cutings. In these cuttings the rooting percentage, rooting level (0-4), root length, dry root weight, …
Changes In Nitrogen Status Of Soybean Under Influence Of Symbiotically Fixed And Bound Nitrogen, A. G. Gadimov, P. M. Safaraliev, C. N. Troistskaya, Surhay Allahverdiev, S. Nafi̇si̇
Changes In Nitrogen Status Of Soybean Under Influence Of Symbiotically Fixed And Bound Nitrogen, A. G. Gadimov, P. M. Safaraliev, C. N. Troistskaya, Surhay Allahverdiev, S. Nafi̇si̇
Turkish Journal of Agriculture and Forestry
The contribution of different nitrogen sources (nitrate 15 N-NO 3 and symbiotic N-N 2 ) to the nitrogen status of soybean in ontogenesis was studied. Nitrate was assimilated effectively during the vegetative growth, whereas later on the nitrogen-fixation by root nodules became the basic source of nitrogen. The applying of a low dose of nitrate (22.2 mg N/plant) increased the total nitrogen content in the plant and did not depress the nitrogen fixation. Distribution of the symbiotic and nitrate nitrogen among organs of soybean was proportional.
Some Characteristics Of Polyphenol Oxidase And Peroxidase From Taro (Colocasia Antiquorum), Ahmet Yemeni̇ci̇oğlu, Mehmet Özkan, Beki̇r Cemeroğlu
Some Characteristics Of Polyphenol Oxidase And Peroxidase From Taro (Colocasia Antiquorum), Ahmet Yemeni̇ci̇oğlu, Mehmet Özkan, Beki̇r Cemeroğlu
Turkish Journal of Agriculture and Forestry
The heat inactivation kinetics of taro polyphenol oxidase (PPO) and peroxidase (POD) in the temperature range of 50°-80°C followed the first-order kinetic model. Both enzymes possessed two isoenzymes with varying heat stabilities. In the range of 60°-70°C, heat stable isoenzymes accounted for 33-34% of POD and 67-72% of PPO. E a and z values of heat stable isoenzymes were, respectively, 19.4 kcal.mol -1 and 25.9°C for POD, and 21 kcal.mol -1 and 25.5°C for PPO. The pH optimum was 5.9 for POD and 6.5 for PPO. POD was densely located on the surface of taro tubers whereas PPO was located …
A Research On Determination Of Superior Hybrid Combinations In Sunflower ( Helianthusannuusl.), Abdurrahim Tanju Göksoy, Aydın Türkeç, Zeki Metin Turan
A Research On Determination Of Superior Hybrid Combinations In Sunflower ( Helianthusannuusl.), Abdurrahim Tanju Göksoy, Aydın Türkeç, Zeki Metin Turan
Turkish Journal of Agriculture and Forestry
This research, having F1 hybrids from 11 female (cytoplasmic male sterile) lines and 3 male (restorer) testers, was conducted in order to determined parents and corsses showing spureior general and specific combining ability in sunflower. Parents used in the study were developed at the University of Uludag, Faculty of Agriculture, Field Crops Department. In the first year of this reseacrh, CMS lines and restorer testers were crossed in all the possible combinations. The hybrid population were evaluted in a replicated field trial at Bursa. Data were analysed by LinexTester method. According to the results, it was determined that the lines …
A Research On Utilization Of Urea By New Zealand White California And Chinchilla Rabbits, Ramazan Demi̇rel, Sahibe Çalişkaner
A Research On Utilization Of Urea By New Zealand White California And Chinchilla Rabbits, Ramazan Demi̇rel, Sahibe Çalişkaner
Turkish Journal of Agriculture and Forestry
In this research, the utilization of urea by New Zealand White, California and Chinchilla breed rabbits were examined using high protein level (20 % crude protein), low protein level (16% crude protein) and low protein supplemented with 1.4 % urea (16% crude protein + 1.4 % urea). Live weight, live weight gain, feed intake, feed efficiency; liver, heart, kidney, abdominal fat, caecum, carcass and fur weights, caecum pH, carcass quality parameters which were taken from right hindleg, back and waist areas of rabbits and blood serum urea, total protein, cholesterol and creatinin values were investigated. In the trial, at 8 …
A Research On Selection Of The Most Effective Species Or Strains Of 7trichogrammafor Biological Control Against Ostrinia Nubilalishübner, Ali Özpinar, Sündüs Uzun, Serif Ali Hassan
A Research On Selection Of The Most Effective Species Or Strains Of 7trichogrammafor Biological Control Against Ostrinia Nubilalishübner, Ali Özpinar, Sündüs Uzun, Serif Ali Hassan
Turkish Journal of Agriculture and Forestry
This study, was carried out to determine the most effective species or strains among Trichogramma evanescensWestwood (from Sakarya-Turkey), T. evanescensWestwood (from Adana-Turkey), T. evanescensWestwood (from Moldavia), T. ostriniaePang et Chen (from China), T. evanescens Westwood (from Darmstadt-Germany), T. brassicae Bezdenko (from Aydin-Turkey) and T. maidis Pintureau & Voegele (from France), which were investigated or used for biological control against O. nubilalis in different countries. A single female was offered choice between 2x40 eggs of O. nubilalis and 2x50 eggs of Sitotroga cerealella (Olivier), sticked on the corner of a white paper (2x2 cm) with one honey drop in the tubes. …
Genotipe X Environment Interactions In Potatoi. The Investigation Based On Stability Parameters, Güngör Yilmaz, M. Emin Tugay
Genotipe X Environment Interactions In Potatoi. The Investigation Based On Stability Parameters, Güngör Yilmaz, M. Emin Tugay
Turkish Journal of Agriculture and Forestry
This study was conducted at Tokat, Niksar and Sivas in 1991 and 1992 to determine the genotip-environment interactions The 15 different potatoas cultivars were used in this study. In order to determine the stabilities of cultivars, the methods proposed by Finlay-Wilkinson, Eberhart-Russell, Francis-Kannenberg, Perkins-Jinks, Baker and Hanson were used. According to the stability parameters used, none of the cultivars was stable for all environments. Cv. Yaylakizi was more stable according to Finlay and Wilkinson while Cv. Ilona was more stable according to other parameters. Resy, Marfona, Ausonia and Agria cultivars were performed in good environments while Granola and clon 82109.6 …
A Study On The Determination Of The Relationship Between Grain Yield And Certain Yield Components Of Corn Using Correlation And Path Analysis, Muhteşem Torun, Coşkun Köycü
A Study On The Determination Of The Relationship Between Grain Yield And Certain Yield Components Of Corn Using Correlation And Path Analysis, Muhteşem Torun, Coşkun Köycü
Turkish Journal of Agriculture and Forestry
A study was conducted to provide some useful information for corn breeding programmes in the Black Sea Region of Turkey. Correlation and path analysis were performed to determine the relationship between grain yield and certain yield components and the characters influencing the yield of corn. Experiments were carried out between 1988-1990, in three locations each year, representing clay and loamy-clay soils in the Çarşamba Plain of the Samsun Province. Four varieties (Yerli, Karadeniz Yıldızı, TTM-8119, P.3377) and six nitrogen levels (0, 4, 8, 12, 16 and 20 kg/da N) were tested. Number of kernels per ear, number of rows per …
Determination Of Relationships Between Spring Rigidity And Some Other Tree Properties In Apricot Trees With Respect To Harvesting Technique, İbrahi̇m Gezer
Determination Of Relationships Between Spring Rigidity And Some Other Tree Properties In Apricot Trees With Respect To Harvesting Technique, İbrahi̇m Gezer
Turkish Journal of Agriculture and Forestry
In this research, the aim is to determine the effect of branch diameter and age of tree on spring rigidity which is very important is the selection of shaker and harvesting paramaters such as stroke and frequency in mechanical apricot harvest. As a result of this research, it is found out that the branch diameter and age of tree has an effect on spring rigidity and that the spring rigity increases nearly as a linear with respect to branch diameter and the age of tree.
The Determination Of Fitness Of Various Isotherm Equations To Moisture Sorption Data Of Kırık, Lancer Barley, Rye, Oat And Corn, Fati̇h Ertugay, Muharrem Certel
The Determination Of Fitness Of Various Isotherm Equations To Moisture Sorption Data Of Kırık, Lancer Barley, Rye, Oat And Corn, Fati̇h Ertugay, Muharrem Certel
Turkish Journal of Agriculture and Forestry
In this research, the fitness of Halsey, Henderson, Harkins-Jura, BET, Smith and Freundlich isotherm equations to moisture sorption data at 20, 25, 35, 50 and 70°C of Kırık, Lancer, barley, rye, oat and corn were investigated. Isotherm equations, fitted quite well to obtained sorption data, were determined and parameter constants of the equations were calculated by regression using the lineer form of the isotherm equation. The best fitness was seen in Henderson equation as low fitness was seen for BET equation.
The Effect Of Various Planting Patterns On Forage Yield And Some Characters Of Corn And Bean Grown Under Intercropping As A Second Crop, Zekeri̇ya Akman, Özer Sencar
The Effect Of Various Planting Patterns On Forage Yield And Some Characters Of Corn And Bean Grown Under Intercropping As A Second Crop, Zekeri̇ya Akman, Özer Sencar
Turkish Journal of Agriculture and Forestry
This study was conducted to determine effects of various planting patterns on forage yield and some characters of corn and bean grown under intercropping as a second crop at Tokat - Kazova ecological conditions in 1992 and 1993. Planting patterns significantly influenced maize leaf ratio, stem ratio, and forage yield. The highest forage corn yield was obtained from pure stand maize and 1 corn + 2 bean alternate rows. Intercropping has significantly influenced leaf ratio, green pod yield and forage yield of bean. The highest forage bean yield was obtained from pure stand bean however, the lowest yield was obtained …
The Acidity Of Important Beech And Oak Species, Mualla Balaban, Güneş Uçar, Ethem Uğur
The Acidity Of Important Beech And Oak Species, Mualla Balaban, Güneş Uçar, Ethem Uğur
Turkish Journal of Agriculture and Forestry
The corrosion of metals in contact with wood, discoloration of wood itself, undesirable effects on wood preservatives and the curing of the synthetic resins especially glues in fiberboards, particleboards and some other effects could be traced back to the acidity of wood. Thus, this phenomenon is of a great importance in the wood utilization. In this study, two important industrial wood species , Quercus frainetto and Fagus sylvatica grown in Belgrad Forest in Turkey were investigated with respect to free, bound and total acidity of wood. Cold and hot water extracts were taken to determine the free and bound acidity …
Effect Of Some Preservation Chemicals On The Density Of Scoth Pine And Oriental Beech Woods, Yalçin Örs, Musa Atar, Hüseyi̇n Peker
Effect Of Some Preservation Chemicals On The Density Of Scoth Pine And Oriental Beech Woods, Yalçin Örs, Musa Atar, Hüseyi̇n Peker
Turkish Journal of Agriculture and Forestry
This study was designed to determine the effect of impregnation with some chemicals on the density of wooden materials. For this reason, experimentals were prepared from Scotch pine and Oriental beech woods and impregnated with polyethylene glycole (PEG-400), ammonium per sulphate (AS), vacsol (V), and also water-repellent (WR), such as stryne, methylemetacrylate and isocynate according to ASTM-D 1413-76 It was found that, after impragnation process oriental beech wood dried in air was the most dense material when ıt is individually used with styrene and MMA, whereas Scotch pine wood was the most dense when it is used with water-repellent (WR) …
Anatomical, Phytosociological And Ecological Properties Of Pterocarya Fraxinifolia (Poiret), Hamdi̇ Güray Kutbay, Nesi̇me Merev, Tolga Ok
Anatomical, Phytosociological And Ecological Properties Of Pterocarya Fraxinifolia (Poiret), Hamdi̇ Güray Kutbay, Nesi̇me Merev, Tolga Ok
Turkish Journal of Agriculture and Forestry
In this study wood anatomical structure, ecological and phytosociological proporties of Pterocarya fraxinifolia (Poiret) Spach which one of the relict species of Turkey and occuring locally at Hacı Osman flooded forest (Tekkeköy-Samsun) have been investigated. The distribution area of the species in Turkey have also been determined. As a result of the study of wood anatomy of P. fraxinifolia have been determined and anatomical properties of P. fraxinifolia have been compared with Juglans regia L. belonging to same family. Leaf and soil samples belonging to P. fraxinifolia were taken and it has been determined that macro element concentrations are between …
Drought Resistance In Bread Wheat Genotypes, Ali̇ Öztürk
Drought Resistance In Bread Wheat Genotypes, Ali̇ Öztürk
Turkish Journal of Agriculture and Forestry
Development of drought-resistant cultivars is one of the major goals in plant breeding programs. Twentysix wheat genotypes were evaluated for drought resistance using the criteria of leaf relative water content (LRWC), leaf relative water loss (LRWL) and drought susceptibility index (DSI) under Erzurum conditions in the crop seasons of 1995-96 and 1996-97. The results showed that differences among the genotypes in LRWC, LRWL and DSI were significant. In rainfed condition; LRWC, LRWL and DSI of genotypes ranged between 74.0-81.6 %, 0.391-0.636 g/g/s and 0.59-1.59 respectively. High LRWC and low LRWL and DSI values indicated that Dağdaş-95, Doğu-88, Haymana,-79 and Yayla-305 …
Technical And Economical Analysis Of Short Distance Koller K 300 Yarder Used For The Extraction Of Timber In Artvin Region, Orhan Erdaş, Habi̇p Eroğlu
Technical And Economical Analysis Of Short Distance Koller K 300 Yarder Used For The Extraction Of Timber In Artvin Region, Orhan Erdaş, Habi̇p Eroğlu
Turkish Journal of Agriculture and Forestry
The method used in transportation of raw forest products can be performed in two phases. The first phase is called " the minor transportation" which is the extraction and hauling of the logs from the felling areas to the landings and intermediate depots. The second phase is "the major transportation". This phase covers the hauling operation from landings and intermediate depots to the log yards or the mill yards. The forestry transportation of harvested woods from compartments is the most difficult and the most expensive operation. Since forests are generally located on high and steep slopes of mountainous area in …
The Effect Of Differents Level Of Phosphorus Fertilizer On Yield, Quality And Agricultural Characteristics Of Some Groundnut Varieties Under The Ecological Conditions Of Kahramanmaraş, Yaşar Kasap, Ali̇ Riza Demi̇rkiran, Abdülkeri̇m Şerbetçi̇
The Effect Of Differents Level Of Phosphorus Fertilizer On Yield, Quality And Agricultural Characteristics Of Some Groundnut Varieties Under The Ecological Conditions Of Kahramanmaraş, Yaşar Kasap, Ali̇ Riza Demi̇rkiran, Abdülkeri̇m Şerbetçi̇
Turkish Journal of Agriculture and Forestry
In this experiment, different levels of phosphorus fertilizer (0, 3, 6, 12 and 24 kg P_2O_5/da) were applied to the some groundnut varieties (PI 288109, NC 7, Gazipaşa and NY 7) under Kahramanmaraş conditions and pod yield, pod weight of plant, pod number of plant, 100 seed weight, seed/pod, seed oil content, oil yield, protein content and protein yield characteristics were studied. The results showed that NC-7 and Gazipaşa varieties gave the best response to phosphorus and 12 kg P_2O_5 /da was found to be the most suitable dose. While the highest protein content was obtained at the level of …
Autocatalyzed Ethanol-Water Pulping Of Wheat (Triticum Aestivum L.) Straw, Hüseyi̇n Kirci, Mehmet Akgül
Autocatalyzed Ethanol-Water Pulping Of Wheat (Triticum Aestivum L.) Straw, Hüseyi̇n Kirci, Mehmet Akgül
Turkish Journal of Agriculture and Forestry
This study aimed possibility of organosolv pulp production by adding to the pulping liquor without any inorganic catalyzes from the wheat straw which is known as an important raw-material for pulp production in Turkey. To obtain optimum pulping conditions ethanol ratio to pulping liquor, temperature and cooking time at maximum temperature were changed systematically and 18 pulping trial were made. The results showed that the pulping temperature at 170ºC was critical for delignification and fiber liberation. Under the limit of 170ºC sufficient delignification and chemical defibration were not observed. However, fast fiber liberation occured by applying 180-190ºC pulping temperatures. Increasing …
Water Consumption And Growth Of Some Barley Genotypes Under Eskişehir Conditions, Mehmet Aydin, A. Vahap Katkat
Water Consumption And Growth Of Some Barley Genotypes Under Eskişehir Conditions, Mehmet Aydin, A. Vahap Katkat
Turkish Journal of Agriculture and Forestry
Using eight barley cultivars field experiments were carried out in Eskişehir, from 1991 through 1994. Water consumption and dry mater yield of genotypes were studied. Also, the yields and yield components as well as their relationship with dry matter production in different growing periods were studied. There was no significant difference among evapotranspiration of genotypes. The Water Use Efficiency (WUE) varied with year. Mean annual WUE of genotypes varied from 3.6 to 4.75 kg / da^-1 mm^-1 for biological yield, and from 1.08 to 1.45 kg / da^-1 mm^-1 for grain yield. Total dry-matter production throughout the growing season and …
Physical Properties Of Alder [Alnus Glutinose Subsps. Barbata (C.A.Mey.) Yalt.] Wood Obtained From Rize-Çayeli Region, Yalçin Örs, Nurgül Ay
Physical Properties Of Alder [Alnus Glutinose Subsps. Barbata (C.A.Mey.) Yalt.] Wood Obtained From Rize-Çayeli Region, Yalçin Örs, Nurgül Ay
Turkish Journal of Agriculture and Forestry
In this study, physical properties of Alder Wood [Alnus glutinose subsps. barbata (C.A.Mey.)Yalt.] were investigated. 10 trees used for experiments were obtained from Rize-Çayeli region and samples were then prepared in accordance with the related standarts. Width of annual rings, density in oven-dried and airdried position, density value in volume, the amount of shrinkage and swelling, the ratio of cell walls and air cavities, the moisture content of wood at green condition, and the fiber saturation point as physical properties were determined. Results indicated that, the mean values were as below: Width of annual rings, 2.61 mm: air dried and …
Mineral Contents Of Different Classes Of Black Tea Produced By Orthodox And Çaykur Methods, Feramuz Özdemi̇r, Ayhan Topuz, Mustafa Erbaş
Mineral Contents Of Different Classes Of Black Tea Produced By Orthodox And Çaykur Methods, Feramuz Özdemi̇r, Ayhan Topuz, Mustafa Erbaş
Turkish Journal of Agriculture and Forestry
Potassium, calcium, phosphor, manganese, magnesium, iron, copper and zinc contents were determined for seven different classes of tea produced by orthodox and Çaykur methods in 3 shooting periods of the 1995 production season. Forty-two (2x3x7) samples were used in the analysis. While the Ca, P, Cu and Zn contents of the samples were affected significantly (p>0.01) by shooting period, method and class, K and Fe contents were affected only by shooting period and class, Mn content was affected only by method and Mg content was affected only by shooting period.
The Business Of Timber Industry, Erdoğan Gavcar, Ümi̇t Sezer Aslan
The Business Of Timber Industry, Erdoğan Gavcar, Ümi̇t Sezer Aslan
Turkish Journal of Agriculture and Forestry
The fact that our forests are decreasing with speed, despite the increasing population, is the couse for the growing problems of the forest products industry sector. The inadequacy to standards and the fact tahat the raw material firewood more efficiently, a study related with its dimensional properties should be made. In this study, meetings were held with timber plants which are active in the forest industry sector in Turkey and of which the annual raw material firewood process capacity is 5000 m^3 and above. As there was no possibility to examine the industry from all aspects, during this meetings, it …