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Effects Of Different Media, Type And Concentrations Of Auxin On Callus Induction And Plant Regeneration From Young Inflorescences Of Yellow Bluestem (Bothriochloa Ischaemum(L.) Keng), Ersi̇n Can, Rüştü Hati̇poğlu
Effects Of Different Media, Type And Concentrations Of Auxin On Callus Induction And Plant Regeneration From Young Inflorescences Of Yellow Bluestem (Bothriochloa Ischaemum(L.) Keng), Ersi̇n Can, Rüştü Hati̇poğlu
Turkish Journal of Agriculture and Forestry
This study was conducted to determine the effects of different media, auxin types and concentrations on callus induction and plant regeneration from young inflorescences of 15 ecotypes of yellow bluestem ( Bothriochloa ischaemum). The young inflorescences were cultured on two different basal media (LS and SH) containing different concentrations (2, 4, 6, and 8 mg/l) of two different auxins (2, 4-D and Dicamba). The results showed that the ecotypes were significantly different from each other in callus induction rate, callus weight per dish and regenerate number per inflorescence segment. Depending on the ecotypes, mean callus induction rate varied from 9.7% …
Hybrid Vigor In Common Wheat (Triticum Aestivum L.), Köksal Yağdi, Şenay Karan
Hybrid Vigor In Common Wheat (Triticum Aestivum L.), Köksal Yağdi, Şenay Karan
Turkish Journal of Agriculture and Forestry
This research was carried out at the experimental plots of the Field Crops Department of Agriculture Faculty, Uludağ University, during 1994-1996. Thirteen strains of common wheat obtained from the Prof. Dr. Osman Tosun Gene Bank were used as parent material for seven combinations of hybridirazations. In the F 1 populations belonging to the abovementioned combinations, plant height, spike height, spikelet number per spike, kernel number and kernel weight per spike and 1000-kernel weight were determined and the hybrid vigor was calculated. Positive and significant differences varying among the combinations were found in the F 1 plants with higher values than …
Factors Affecting Iron Chlorosis Observed In Peach Trees In The Bursa Region, Haluk Başar
Factors Affecting Iron Chlorosis Observed In Peach Trees In The Bursa Region, Haluk Başar
Turkish Journal of Agriculture and Forestry
This research was implemented to determine the factors causing iron chlorosis observed in peach trees in the Bursa region. For this purpose, four peach orchards having trees with various degrees of chlorosis were selected. Soil and leaf samples were collected during a two year period. According to the results, chlorophyll, total Fe and active Fe contents of the leaves were negatively correlated with soil pH and lime (CaCO 3 ) and the active lime content of the soils. Significant positive correlations were found between organic matter content of the soils and chlorophyll, total Fe and active Fe content of the …
Investigations On Some Agronomical Characters And Hybrid Performances Of New-Improved Synthetic Varieties In The Sunflower (Helianthus Annuusl.), Abdurrahi̇m Tanju Göksoy, Zeki̇ Meti̇n Turan
Investigations On Some Agronomical Characters And Hybrid Performances Of New-Improved Synthetic Varieties In The Sunflower (Helianthus Annuusl.), Abdurrahi̇m Tanju Göksoy, Zeki̇ Meti̇n Turan
Turkish Journal of Agriculture and Forestry
This research was carried out to determine some agronomical characters and the hybrid performances for these characters of new-improved synthetic sunflower varieties (SYN.-1(A), SYN.-1(B), SYN.-1(C) and SYN.-1(D)) during the years 1994- 1997 at the Experimental and Research Farming of Faculty of Agriculture, Uludağ University. In the first year (1994), the synthetic varieties were obtained by open pollination from the mixture of the inbred lines (SYN.-0(A), SYN.-0(B), SYN.-0(C) and SYN.-0(D)) forming each of the synthetic varieties. In the second, third and fourth years, four synthetic varieties, four mixtures of the inbred lines and two standard varieties (Vniimk-8931 and one commercial hybrid) …
Effects Of Boron On Growth Of Various Wheat Varieties And Distribution Of Boron In Aerial Part, Süleyman Taban, İbrahi̇m Erdal
Effects Of Boron On Growth Of Various Wheat Varieties And Distribution Of Boron In Aerial Part, Süleyman Taban, İbrahi̇m Erdal
Turkish Journal of Agriculture and Forestry
The aim of this project was to determine the effects of boron on growth and boron distribution in the aerial part of wheat cultivars. For this purpose, soil samples collected from Kenan Evren training and research farm at the Faculty of Agriculture was used. The soil was clay loam in texture, containing 12% lime, with a pH of 7.91 and 1.52 mg kg -1 plant available boron. In greenhouse conditions, four Triticum aestivum cultivars (Bolal-2973, Bezostaya, Kirac, Gerek-79) and two Triticum durumcultivars (Cakmak-79, Kiziltan-91) were grown with boron at levels of 0,1 and 10 mg kg -1 levels as boric …
Comparison Of Surface Soil Stabilization Methods In Situ, Oğuz Başkan, İlhami̇ Ünver, Ceyhan Tarakçioğlu
Comparison Of Surface Soil Stabilization Methods In Situ, Oğuz Başkan, İlhami̇ Ünver, Ceyhan Tarakçioğlu
Turkish Journal of Agriculture and Forestry
The effects of farmyard manure, tea waste, Portland cement, frisol, initial temporary transparent film cover, and fuel oil on soil stabilization were compared with the control soil on a tilled and loosened clay loam Fluvent soil in Ankara. Grass growth was observed in a two-year field experiment laid out as randomized-block experimental design with three replications, with monitoring of the changes pH in 0-40 cm depths, levels of percentage of water stable aggregates, penetration resistance (PR), infiltration, and moisture content. In addition, soil moisture retention characteristics (SMRC) curves were plotted, organic matter (OM) contents and hydraulic conductivities were determined at …
Tolerance To Boron Toxicity Of Maize ( Zea Mays L.) Cultivars Widely Cultivated In Turkey, Aydin Güneş, Mehmet Alpaslan, Hesna Özcan, Yakup Çikili
Tolerance To Boron Toxicity Of Maize ( Zea Mays L.) Cultivars Widely Cultivated In Turkey, Aydin Güneş, Mehmet Alpaslan, Hesna Özcan, Yakup Çikili
Turkish Journal of Agriculture and Forestry
Boron tolerance of the following maize cultivars, Furio, Riogrande, Sele, DK 743, Helix, Missouri, Betor and Poker, was investigated. The experiment was carried out under greenhouse conditions. Boron was applied to the soil at 0, 10 and 30 mg kg -1 levels as H 3 BO 3 . Fresh and dry weights and B concentration and B uptake of the plants were determined at the end of the experiment. Boron tolerance of the corn cultivars was determined from the relationships between fresh and dry weights and B concentration and B uptake rates. According to the results, B tolerance of cultivars …
Determination Of The Effects Of Different Irrigation Programs On Water Consumption In Different Soil Layers And Root Growth Of Cotton, Ahmet Ertek, Riza Kanber
Determination Of The Effects Of Different Irrigation Programs On Water Consumption In Different Soil Layers And Root Growth Of Cotton, Ahmet Ertek, Riza Kanber
Turkish Journal of Agriculture and Forestry
This study was conducted to determine of the effects of different irrigation programs on water consumption in different soil depths and root growth of cotton. The amount of irrigation water applied was based on free water surface evaporation from a screened Class-A Pan. Irrigation treatments consisted two different irrigation intervals (I1: 5; I2: 10 days), and three plant-pan cofficients (Kcp1: 0.75, Kcp2: 0.90, Kcp3: 1.05) and two different wetted percentages (P1: 0.70 and P2: based on cover percentage of crop). According to results it was determined that plant water consumption of 42% and root growth of 65% were in 30 …
Determination Of The Amount Of Irrigation Water And Interval For Cotton With The Pan-Evaporation Method, Ahmet Ertek, Riza Kanber
Determination Of The Amount Of Irrigation Water And Interval For Cotton With The Pan-Evaporation Method, Ahmet Ertek, Riza Kanber
Turkish Journal of Agriculture and Forestry
This study was conducted to determine the amount of irrigation water and interval of cotton irrigated by the drip system with the pan-evaporation method. The amount of irrigation water applied was based on free surface evaporation from a screened Class-A Pan. Irrigation treatments consisted of two different irrigation intervals (I1: 5; I2: 10 days), and three plant-pan coefficients (Kcp1: 0.75, Kcp2: 0.90, Kcp3: 1.05) and two different wetted percentages (P1: 0.70 and P2: based on the cover percentage of the crop). According to the results, seasonal irrigation water varied from 322 to 472 mm; seasonal Et was 449 to 615 …
Effect Of Different Improvement Methods On Yield And Botanical Composition Of Natural Pasture In Salur Village Of Ladik Town, İbrahi̇m Aydin, Ferat Uzun
Effect Of Different Improvement Methods On Yield And Botanical Composition Of Natural Pasture In Salur Village Of Ladik Town, İbrahi̇m Aydin, Ferat Uzun
Turkish Journal of Agriculture and Forestry
This research was conducted to determine the most suitable improvement methods applicable in pastures of the central Black Sea Region. A natural pasture in Salur Village of Ladik Town was used. Fertilizer (10 kg/da N+8 kg/da P 2 0 5 ), soil aeration, herbicide, broadcast seeding, deep cutting and some combinations of them were chosen and applied as pasture improvement methods in 1996-1998. The results indicated that deep cutting and herbicide application had different effects on hay and protein yields according to year. None of the methods affected the botanical composition of the pasture. Hay yield and botanical composition of …
Effect Of Some Plant Growth Regulators On Fruit Thinning In Apricots, Mehtap Coşkun, Ahsen Işik Özgüven
Effect Of Some Plant Growth Regulators On Fruit Thinning In Apricots, Mehtap Coşkun, Ahsen Işik Özgüven
Turkish Journal of Agriculture and Forestry
This study was carried out during 1995-1996 in Çukurova. In the experiment, Priana and Belliana were used as comparative cultivars. In addition, 12.5, 25, 50 ppm of NAA and 500, 1000, 2000, 4000 ppm of carbaryl and 50 % of hand thinning were applied about three weeks after full bloom. The results showed that 50 ppm NAA increased both the thinning rate and the fruit size while 1000 and 2000 ppm of carbaryl had a positive effect on the fruit size and weight without having any effect on thinning. Although the treatments gave better results on the fruit size and …
Effects Of Irrigation And Nitrogen Fertilization On Protein Yield Of Common Wheat (Triticum Aestivum L.), Mustafa Güler, Günal Akbay
Effects Of Irrigation And Nitrogen Fertilization On Protein Yield Of Common Wheat (Triticum Aestivum L.), Mustafa Güler, Günal Akbay
Turkish Journal of Agriculture and Forestry
This research was carried out at the Experimental Field of the Department of Agronomy and Kenan Evren Research and Application Farm, Faculty of Agriculture, Ankara University during 1993-1995 in order to determine the effects of different irrigation and nitrogen fertilizer applications on the grain protein yield of common wheat. Bezostaja 1, Gerek 79 and Gün 91 cultivars were used. 0 mm ( S 0 ), 20 mm ( S 1 ) and 40 mm ( S 2 ) irrigation applications and also 4 kg/da ( N 1 ), 6 kg/da ( N 2 ) and 8 kg/da ( N 3 …
An Investigation On The Weed Distribution In Some Agricultural Fields Of Eskişehir And Environs, Cengi̇z Türe, Yavuz Bülent Köse
An Investigation On The Weed Distribution In Some Agricultural Fields Of Eskişehir And Environs, Cengi̇z Türe, Yavuz Bülent Köse
Turkish Journal of Agriculture and Forestry
In this study, the flora of the weeds, which is one of the most important factors adversely affecting agricultural production in Eskişehir and environs, was investigated. In the study area, 75 genera, 91 species and subspecies belonging to 32 families were determined. The Asteraceae (Compositae)family was found to have the largest number of taxa in the study area. Phytogeographical distribution of plants shows that the most commonly found element was Irano-Turanian (4.3%). It was found that 39% of the described taxa were distributed in wheat fields, 25 % in beet fields, 14 % in clover fields and 12 % of …
Effects Of Different Levels Of Nitrogen On Some Characters Of Datura Collected From Samsun Environs, Enver Esendal, Kudret Kevseroğlu, Seli̇m Aytaç, Gülen Özyazici
Effects Of Different Levels Of Nitrogen On Some Characters Of Datura Collected From Samsun Environs, Enver Esendal, Kudret Kevseroğlu, Seli̇m Aytaç, Gülen Özyazici
Turkish Journal of Agriculture and Forestry
Seeds of datura plants ( Datura stramonium L.) were collected from three different locations (Kurupelit, Vadiler Sitesi and Gelemen) and examined at different nitrogen levels (0, 50, 100, 150 and 200 kg N/ha) for two years (1993 and 1994) in the Kurupelit Campus area of O.M.U., Samsun, Black Sea coastal area. The field experiments were conducted in a split-plot randomized block design with three replications. The highest fresh and medicinal herb yields were obtained by application of 150 kg of nitrogen per hectare, and seed yield was increased by increased nitrogen application levels. Therefore, it may be necessary to test …
Agronomic And Technological Properties Of Coriander ( Coriandrum Sativum L.) Populations Planted On Different Dates, Nermi̇n Kaya, Güngör Yilmaz, İsa Telci̇
Agronomic And Technological Properties Of Coriander ( Coriandrum Sativum L.) Populations Planted On Different Dates, Nermi̇n Kaya, Güngör Yilmaz, İsa Telci̇
Turkish Journal of Agriculture and Forestry
This research was conducted to determine suitable sowing dates and the potential productivity of coriander (Coriandrum sativumL.), grown in the Mardin, Denizli and Erzurum districts, at Tokat ecological conditions in 1997 and 1998 vegetation periods. Three local populations from Mardin, Denizli and Erzurum were sown on four different dates (1 November, 1 March, 15 March and 1 April). The highest seed yield was obtained from the Erzurum population as 908 kg/ha. The greatest essential oil ratio was recorded from the Denizli population with 0.39%. Linalool which is main component of coriander essential oil varied from 50.52- 92.52. Plant height (48.6-73.2 …
The Effects Of Different Pruning Methods And Height Of Fruit Setting On Plant Growth, Yield And Fruit Quality Of Melons Grown In Greenhouses, Ni̇lgün Uygun, Nebahat Sari
The Effects Of Different Pruning Methods And Height Of Fruit Setting On Plant Growth, Yield And Fruit Quality Of Melons Grown In Greenhouses, Ni̇lgün Uygun, Nebahat Sari
Turkish Journal of Agriculture and Forestry
This research was carried out to determine the effects of different pruning methods and height of fruit setting in greenhouse melon production for two years. The first year, the Makdimon F1 variety was used, the second year Galia H5 F1 and Deltex F1 varieties were also tested. The first year the plants were pruned as (a) young plants were stopped after the second leaf and the strongest branch was left as the main stem (top shoot pruning) and (b) control (non-pruned). In both treatments the heights of fruit setting were 30 and 60 cm. In the second year, two stems …
Determination Of The Mechanization Level For Forestry Operations By Linear Programming, Altay Uğur Gül, Hafiz Hulusi̇ Acar, Özgür Topalak
Determination Of The Mechanization Level For Forestry Operations By Linear Programming, Altay Uğur Gül, Hafiz Hulusi̇ Acar, Özgür Topalak
Turkish Journal of Agriculture and Forestry
Forestry operations take place under various variables and partly uncontrolled factors. The lack of mechanization level and its application cause quantity and quality losses during production. In this study, seven different production methods were used for felling, logging and barking to determine the best of production method for the Kale region. Seven different models were set up and solved by linear programming for this purpose. Each of these solutions were used with different production methods. Model 1 had the lowest production cost ($290779.5) in the other models and production method 6 was chosen in this model. Thus, felling, logging and …
Minimization Of The Transport Costs In Forestry By Linear Programing, Hafiz Hulusi̇ Acar, Altay Uğur Gül, Selçuk Gümüş
Minimization Of The Transport Costs In Forestry By Linear Programing, Hafiz Hulusi̇ Acar, Altay Uğur Gül, Selçuk Gümüş
Turkish Journal of Agriculture and Forestry
In forest management, transportation is a rather difficult, expensive and time-consuming activity. Transportation of logs from the forest to the landings has been achieved in various ways. Log transportation with minimum losses of quality and quantity and with minimum damage to the environment is a crucial matter in Turkey. The operation research methods for log operations have not been used in Turkey. The aim of this study was to minimize the total cost during logging operations by linear programming. Thirteen different models were set up and solved for minimization of total cost. Model 4 constituted the minimum cost. The minimum …
Anatomical And Histological Investigations On The Effects Of Stratification Substrates On Final Take And Quality Of Grafted Vines, Rüstem Cangi̇, Fi̇kret Balta, Adnan Doğan
Anatomical And Histological Investigations On The Effects Of Stratification Substrates On Final Take And Quality Of Grafted Vines, Rüstem Cangi̇, Fi̇kret Balta, Adnan Doğan
Turkish Journal of Agriculture and Forestry
This experiment was carried out to determine the effects of water, sawdust and pumice as stratification substrates on the success of callusing, final take and quality of grafted vines of the Hafizali and Ercis grape cultivars grafted on Kober 5BB rootstock. The anatomical and histological development of the graft union was investigated at 21, 28, 35 and 42 days after grafting in all combinations. As for the results of the anatomical and histological investigations, it was observed that the cambial continuity between graft components in all combinations was mostly established in 21 days, and completed in 28-35 days in water …
Effect To The Young Inflorescence Length On The Callus Formation And Plant Regeneration In Yellow Bluestem (Bothriochloa Ischaemmum (L.) Keng), Ersi̇n Can, Nafi̇z Çeli̇ktaş, Rüştü Hati̇poğlu
Effect To The Young Inflorescence Length On The Callus Formation And Plant Regeneration In Yellow Bluestem (Bothriochloa Ischaemmum (L.) Keng), Ersi̇n Can, Nafi̇z Çeli̇ktaş, Rüştü Hati̇poğlu
Turkish Journal of Agriculture and Forestry
This study was carried out to determine the effect of inflorescence length on callus induction and plant regeneration in yellow bluestem ( Bothriochloa ischaemum(L) Keng). Inflorescences with different lengths (2-25 mm) from the in vitro regenerated plants of a Bothriochloa - ecotype with a good response to in vitro culture were cultured on LS-medium with addition 8 mg/l dicamba. The results of the study showed that the rates of callus induction related to inflorescence length varied from 20.3% to 46.9%. The highest callus weight per inflorescence was obtained from the inflorescences with a length of 11-15 mm. Increasing the inflorescence …
The Combining Abilities Of Some Barley ( Hordeum Vulgarel.) Genotypes Under Saline Conditions, Riza Yilmaz, Cahi̇t Konak
The Combining Abilities Of Some Barley ( Hordeum Vulgarel.) Genotypes Under Saline Conditions, Riza Yilmaz, Cahi̇t Konak
Turkish Journal of Agriculture and Forestry
The salt tolerance of eight barley genotypes and their 15 F1 hybrid populations were investigated in line x tester analysis for seedling traits in greenhouse and generative stage characteristics in saline fields. The data indicated that there was sufficient genetic variability among genotypes for salt tolerance in barley. The MENTA "S" genotype for general combining ability and Tokak 157/37 x ZARZA "S", Quantum x No.56000/MISC-233 and Kaya-7794 x ZARZA "S" crosses for specific combining ability had positive and significant estimates both in greenhouse and field conditions. It was determined that spike length, number of grain per spike, single spike yield, …
Adaptation And Stability Analysis In Some Bread Wheat Genotypes, Şevket Meti̇n Kara
Adaptation And Stability Analysis In Some Bread Wheat Genotypes, Şevket Meti̇n Kara
Turkish Journal of Agriculture and Forestry
Genotype x environment interaction is a challenging issue to plant breeders in improving high-yielding, stable genotypes for variable environments. Several methods of measuring stability of genotypes tested across a range of environments have been proposed. The grain yields of fifteen bread wheat ( Triticum aestivumL.) genotypes grown at eight different locations were used to assess adaptation and stability characteristics of the genotypes and to study associations among these parameters. According to most of the parameters used in the present study, Kiraç 66, Es-kbvd-15 and Ank-92-1 appeared to have a good level of general adaptation to all environments. Mean yield was …
An Analysis Of Import Demand For Dairy Products In Turkey, Osman Karkacier
An Analysis Of Import Demand For Dairy Products In Turkey, Osman Karkacier
Turkish Journal of Agriculture and Forestry
This study analyzes the impacts of economic factors on import demand for dairy products. The import demand pattern for dairy products in Turkey is influenced by changes in the world's dairy products market and government livestock programs and policies. Turkey's import demand for dairy products is specified as a function of domestic prices, GNP (Gross National Product) per capita, lagged imports, Turkish Lira-US Dollar exchange rate and trend factor. Regression analysis was employed to estimate equation parameters. Analysis was based on annual data for 1982-1997. Turkey's import demand for dairy products were influenced mostly by GNP per capita, domestic prices …
Effect Of Potassium And Magnesium Fertilization On Yield And Nutrient Content Of Rice Crop Grown On Artificial Siltation Soil, Abdülreşi̇t Brahi̇, M. Rüştü Karaman, M. Turgut Topbaş, Ari̇f Aktaş, Erdi̇nç Savaşli
Effect Of Potassium And Magnesium Fertilization On Yield And Nutrient Content Of Rice Crop Grown On Artificial Siltation Soil, Abdülreşi̇t Brahi̇, M. Rüştü Karaman, M. Turgut Topbaş, Ari̇f Aktaş, Erdi̇nç Savaşli
Turkish Journal of Agriculture and Forestry
The main purpose of this study was to determine the effect of potassium and magnesium fertilization on the yield and N, P, K, Mg, Fe, Cu, Zn, Mn contents of rice crop grown on soil used for cultivation after siltation from the Kelkit River. The experiment was carried out in a randomised block design with 4 replications, using Riba rice grown in pots containing 5 kg of soil. Potassium, K 2 SO 4 , at 0, 20, 40, 60 and 80 kg K 2 O/ha and magnesium, MgO, at 0, 20, 40, 60 and 80 Mg/ha were applied before sowing. …
The Effect Of Compaction On Urease Enzyme Activity, Carbon Dioxide Evaluation And Nitrogen Mineralisation, Ayten Karaca, Abdullah Baran, Koray Haktanir
The Effect Of Compaction On Urease Enzyme Activity, Carbon Dioxide Evaluation And Nitrogen Mineralisation, Ayten Karaca, Abdullah Baran, Koray Haktanir
Turkish Journal of Agriculture and Forestry
The effects of compaction on urease enzyme activity, carbon dioxide evaluation and nitrogen mineralisation of urea-treated and untreated soils were investigated. Soils were compacted at compaction levels of O kgcm -2 , 2 kgcm -2 and 4 kgcm -2 and incubated for 28 days. The changes in urease enzyme activity, CO 2 evaluation and nitrogen mineralization were determined during incubation periods. Urease enzyme activity was decreased significantly (P
Exploring The Concept Of A Forest Landscape Management Paradigm, Emi̇n Zeki̇ Başkent, Haci̇ Ahmet Yolasiğmaz
Exploring The Concept Of A Forest Landscape Management Paradigm, Emi̇n Zeki̇ Başkent, Haci̇ Ahmet Yolasiğmaz
Turkish Journal of Agriculture and Forestry
The concept of forest management planning has rapidly progressed towards a more holistic approach in the last decade. Considering the whole landscape of ecosystems is the focus of landscape management. This paper examines the evolutionary process of forest management and compares and contrasts the landscape management planning concept to its predecessor, the conventional forest resource management approach. It explains the conceptual framework, provides the principles and the improvements over the conventional management planning, and discusses different approaches towards the landscape management concept. However, the paper stresses the fact that the evolutionary process of forest management provides the basis for what …
Impacts Of Turkey's Integration Into The European Union On Agriculture In The Post-Uruguay Round Environment, Cemal Atici, P. Lynn Kennedy
Impacts Of Turkey's Integration Into The European Union On Agriculture In The Post-Uruguay Round Environment, Cemal Atici, P. Lynn Kennedy
Turkish Journal of Agriculture and Forestry
Agricultural trade policies between Turkey and the European Union are modeled using a political preference function (PPF). The PPF is used to estimate the producer and consumer weights perceived by policy makers. The agricultural effects of Turkey's integration into the European Union (EU) and optimal strategies for Turkey and the EU are analyzed Results show that Turkey' s PPF values will be lower, with respect to agriculture, when it joins the EU; however, EU trade liberalization benefits Turkey.
Effects Of Some Plant Residues On Nitrogen Mineralization And Biological Activity In Soils, Emi̇ne Erman Kara
Effects Of Some Plant Residues On Nitrogen Mineralization And Biological Activity In Soils, Emi̇ne Erman Kara
Turkish Journal of Agriculture and Forestry
The objective of this experiment was to determine the rate of decomposition and nitrogen mineralization of plant residues in soil under laboratory conditions. The experiment consisted of six treatments: control, industrial tobacco residues, rice straw, rice straw + mineral nitrogen, rice husks and rice husks+mineral nitrogen. The plant materials were added at a rate of 2000 mg/kgC and the amount of NH 4 + -N completed the C:N ratio of the added materials to 12.5. After adding the plant material the following measurements were carried out: soil respiration measurements 14 times, dehydrogenase activity 14 times, mineral nitrogen (ammonium and nitrate). …
Comparison Of The Swelling And Shrinkage Characteristics Of Corcisan Pine (Pinus Nigra Var. Mantima), İlker Usta, Ari̇f Güray
Comparison Of The Swelling And Shrinkage Characteristics Of Corcisan Pine (Pinus Nigra Var. Mantima), İlker Usta, Ari̇f Güray
Turkish Journal of Agriculture and Forestry
The objective of this study was to determine the volumetric swelling and shrinkage characteristics of air-dried Corsican pine in the longitudinal, tangential and radial directions. For this purpose, the swelling of the wood was caused by the wood being increased in water whilst placed in a swelling jig, and the shrinkage made in an oven by drying. The experimental results showed that although the differences in swelling or shrinking occur in the first 5 hours, both swelling and shrinkage are then negligible in the three directions. The values of swelling-shrinkage showed considerable difference among different directions; for instance, swelling-shrinkage in …
Somatic Embryogenesis From Mature Seed Cultures Of Pistacia Atlantica, Ahmet Onay
Somatic Embryogenesis From Mature Seed Cultures Of Pistacia Atlantica, Ahmet Onay
Turkish Journal of Agriculture and Forestry
Embryogenic mass was produced from kernels of mature fruits of Pistacia atlantica cultured in liquid Murashige and Skoog media, supplemented with 100 mg/l casein hydrolysate, 100 mg/l l-ascorbic acid, and benzylaminopurine (BAP). Embryogenic mass-es were differentiated directly from the kernel explants after culture for 3 weeks in liquid medium with 0.5-4 mg/l benzylaminop-urine. After transfer of the embryogenic masses into the same medium, but after a few subcultures with benzylaminopurine, somat-ic embryos appeared. Clusters of somatic embryos were transferred to the agar solidified MS medium for maturation. Matured somatic embryos, germinated on the maturation medium without growth regulators, developed into …