Forest Sciences Commons^™

Effects Of The Spiral Grain On Some Physical Properties Of Calabrian Pine (Pinus Brutiaten.) Wood, Yener Göker, Nusret As, Turgay Akbulut, Türker Dündar

Turkish Journal of Agriculture and Forestry

In this study, the effects of spiral grain on some physical properties of the Calabrian pine (Pinus brutia Ten.) wood were investigated. For this purpose, 17 sample trees with various spiral grain angles, were taken from the Çakirlar region, Antalya district. The selected trees were divided into five groups according to grain angles. Tests were carried out for oven dry density, density values in volume, shrinkage, fiber saturated point (FSP) and maximal moisture content. The results led to a number of conclusions; In general, density increased in relation to the spiral grain increase. Density (oven dry weight/green volume) increased after …

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 …

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 …

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 …

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, …

Dessiccation Using Saturated Salt Solutions And Improvement Germination Rate Of Walnut (Juglans Regia L.) Somatic Embryos, Hati̇ce Dumanoğlu

Turkish Journal of Agriculture and Forestry

Desiccation of somatic embryos under different air humidities conditioned by saturated salt solutions for different dura-tions; relationships between desiccation and germination or root formation in the dark; and effects of desiccation and gibberellic acid on germinating of 'Su-2' walnut somatic embryonic embryo line were investigated. Survival of embryos was low (about 10%) or zero when loss of fresh weight was about 90% and dry matter was about 70%. The highest germinating percentages (13.3-23.3%) were obtained with about 40.4-77.3% of loss of fresh weight and 9.1-34.6% of dry matter of desiccated embryos in covered plates over saturated MgCl 2 .6H 2 …

Characterization Of Some Regosols In The Bursa Plain, Cumhur Aydinalp

Turkish Journal of Agriculture and Forestry

In the Bursa plain, Regosols are extensively cultivated soils for horticultural crops and irrigated by water from aquifers. These soils are quite widespread on the west side of the plain and developed on different types of parent materials. This research was carried out to determinate genesis and classification of the Regosols developed on calcareous colluvium material. Five soil profiles were examined in this research and their characterization included field morphology and physico-chemical analysis. The soils were classified according to the systems of FAO/Unesco (1990), FitzPatrick (1988), and USDA Soil Taxonomy (1994). The soils show high sand and calcium carbonate contents …

Activation Of The Germination On The Seeds Of Some Plants, Meti̇n Saribaş

Turkish Journal of Agriculture and Forestry

In this study, activation experiments of germination were done in three species seeds which are naturally distributed in Turkey. Because" The stratification method" needs a long time, a new and faster germination method was sought. The results of the three species are below. Ostrya carpinifolia Scop naturally exists in the Black Sea region, Central Anatolia and as well as in Antalya, Adana and Antakya forests in the Carpinetumzone. This decidous species is from the Betulaceafamily, Coryleaesubfamily, Ostrya L. genus and can be 20m in height with an irregular canopy. Generally, it is confused with CarpinusL. and foresters do not pay …

The Effects Of Different Locations And Hormone Doses On The Rooting Of Cuttings Of Karabaş Lavender (Lavandula Stoechas L.) Grown In The Flora Of Hatay, Fi̇li̇z Ayanoğlu, Ahmet Mert, Durmuş Alpaslan Kaya

Turkish Journal of Agriculture and Forestry

The intensive growing areas of Karabaş lavender were first determined in the province of Hatay. The rooting capabilities of the cuttings of Karabaş Lavender which were gathered from different locations, one (Işİklİ) on the coast of Mediterranean and the other one (Narlİca) near Antakya, were investigated. The cuttings were treated with 1 000, 2 000 and 4 000 ppm IBA doses and the cuttings with no IBA treatment were used as control. The effects of IBA on rooting were investigated. The rooting ratios of the cuttings gathered from Işİklİ were higher than those of the cuttings gathered from Narlİca. The …

Determining The Efficiency Of Forward-Sloped Bench Terraces On Soil Conservation: The Case Of The Aydın-Bozdoğan-Alamut Terracing Area, Alaetti̇n Taysun, Hali̇l Baki̇ Ünal, Altan Şahi̇n, Hasan Zafer Vurgun

Turkish Journal of Agriculture and Forestry

The study was carried out to determine the efficiency of forward-sloped bench terraces on soil conservation in the Aydın- Bozdoğan-Alamut terracing area. For this purpose, the shape specifications, and physical and chemical properties of the soil that belong to the sample terraces in the project area were determined and the factors of K and LS that are needed for calculating soil losses were are found through the Universal Soil Losses Equation. According to the evaluation, especially the determined factors of K and LS were higher for the sample terraces interfered with by farmers and this result shows that the probable …

The Effects Of Press Direction, Wood And Glue Types To The Tensile Strength On "T" Joints With Mortise And Tenon, Mustafa Altinok, Ni̇hat Döngel, Cevdet Söğütlü

Turkish Journal of Agriculture and Forestry

The effects of press direction, wood and glue types on the tensile strength on "T" joints with mortise and tenon. Mortises and tenons were constructed and opened with a circular saw and glued to "T" joint members made of pine ( Pinus silvestris L.) , beech ( Fagus orientalis L.), chesnut ( Castenea sativa Mill.), cedar ( Cedrus libani), which are widely used in the furniture industry. "T" joints were bonded with side pressure and axial pressure with the following glues: Desmodur-VTKA, PVAc, PVA(pink) and Kleiberit 305. Tension tests were carried out on prepared samples according to DIN 53251 and …

Effects Of Diameter-Limit And Two-Age Timber Harvesting On Songbird Populations On An Industrial Forest In Central West Virginia, Cathy Ann Weakland

Graduate Theses, Dissertations, and Problem Reports (ETD)

Many studies examining forest fragmentation effects on songbirds have been conducted in landscapes significantly altered by urbanization or agriculturalization rather than forested landscapes. There is some evidence that forest fragmentation due to timber harvesting has different effects on bird abundance than fragmentation from other land uses. It is unknown how songbirds respond to different forms of timber harvesting as fragmentation events. Also, it is unclear if microhabitat-level or landscape-level characteristics are more important predictors of breeding bird occurrence in the central Appalachians. The objectives of my study were to determine the short-term effects of diameter-limit and two-age timber harvesting on …

Field Maps 2000, Grace K. Attea, Ryan W. Mcewan, John L. Vankat

Data Files for Old-Growth Deciduous Forest Dynamics Archive: Hueston Woods

Historical field map scans (2000) for the permanent 100m x 105m research plot in Hueston Woods State Nature Preserve.

Maps were digitized in 2022.

Method To Predict The Potential Regional Long-Term Timber Supply Using Gis And Other Publicly Available Data, Jeffery Earl, Richard A. Kluender, Robert Brewington

Journal of the Arkansas Academy of Science

While the global demand for wood products is on the rise, timber production has shifted from the Pacific Northwest to the southeastern United States in recent times. The increase in harvesting makes accurate assessment of the South's wood supply essential. Anew method is proposed for looking at the potential supply of raw woody material. The test area was three southeastern Arkansas counties. A geographic information system (GIS) using ArcView software incorporates two sources of public information. First, Forest Inventory and Analysis (FIA) data from the USDA Forest Service were queried to find land areas and volumes by timber type, as …

Effect Of Regional Different N-Fertilizer Applications On Nitrate Accumulation In Wintervegetables Grown On Tokat Region, M. Rüştü Karaman, Abdülreşi̇t Brahi̇, Aydin Güneş, Ali̇ İnal, Mehmet Alpaslan

Turkish Journal of Agriculture and Forestry

The main object of this study was to observe the effect of regional N-fertilizer applications on the nitrate accumulation of some winter vegetables grown on farmer's fields located at different parts of the Tokat region. For this reason, leaf samples of some winter vegetables, namely spinach, cabbage, leek and lettuce collected from each field were analysed for nitrate, and the soil samples taken from a depth of 0-20 cm depth of each sampling field were analysed for nitrate content and texture. According to the results of this study, different nitrate levels (910-2360 mg/kg in spinach, 945-1785 mg/kg in cabbage, 750-1947 …

The Determination Of Seed Yield And Yield Components In Some Bean (Ph. Vulgaris)Cultivars And Correlations Between These Characters Under The Çukurova Conditions, Adem Emi̇n Anlarsal, Celal Yüce, Derya Özveren

Turkish Journal of Agriculture and Forestry

This research was conducted to determine suitable bean cultivars under Çukurova conditions, as well as to find out the correlations between seed yield and yield components. According to the experiment years' average, the seed yield of bean cultivars varied from 57.4 to119.6 kg/da and from 16.5 to 97.5 kg/da in dwarf and climbing beans respectively sehirali-90 and Yalova-5 in dwarf beans and Dermason-Malatya and Horoz-Tokat in climbing beans had the high seed yield in both experiment years. Positive correlation cofficients were found between seed yield and 100 seed number in dwarf beans. Also, there were positive correlation coefficients between seed …

An Operations Research Application In The Particleboard Industry, Selman Karayilmazlar, Erdal Balaban

Turkish Journal of Agriculture and Forestry

In this study, a model was used for the optimization of product mix (the amounts of each product in the mixture) in particleboard industry by using linear programming. A theoretical model was constructed in which operations research methods and linear programming were applied to the maximization of the profit of a particleboard mill (KÖYKOBİR) as the consumer of industrial wood. To this end, 1993-1994-1995-1996 production, sales, stock quantities and costs as well as data related to capacities of the chipping, drying, pressing, sanding and gluing units were processed. Moreover, processing times of every product at these units were calculated. The …

Investigations On The Performance Of Some Strawberry Cultivars (Fragaria X Ananassaduch.) Grownin Open Fields And Under High Tunnel Conditions, Kubi̇lay Önal

Turkish Journal of Agriculture and Forestry

Five strawberry cultivars were grown as frigo seedlings planted in July by using two management systems, open grow-ing and high tunnel, in 1996 and 1997. Yield, earliness and some quality characters were observed. The high tunnel system made the crop 2-3 weeks earlier than the open field system with a longer period. Yield was also high in the high tunnel system with 1053 grams per plant while it was 877 grams in open growing. Miranda was the highest yielding cultivar in both management systems. Cultivars Camarosa and Miranda were superior for fruit weight and the rate of high quality.

A Study On The Determination Of The Marketing Margin And Manufacturing Cost Of Tulumcheese In Erzincan City, Vedat Dağdemi̇r

Turkish Journal of Agriculture and Forestry

In this study, the marketing margin and production cost of 1 kg tulum cheese in Erzincan city were calculated. The data necessary for the study were obtained from a questionnaire filled in by 17 tulum cheese producers. Cheese manufacturing cost per kg was calculated as 485 962.8 TL on average. Market cost which was calculated by adding storage and transfer costs to the manufacturing cost was found to be 492 983.7 TL. 47.8%, 12.6%, 1.1%, 21.0%, and 17.5% of the cost paid by the consumer for 1 kg tulum cheese went to the farmer, other expenditures, income tax, the producer …

Determination Of The Heterotic Effects And Phenotypic Correlation In Earlines, And Agronomical And Quality Characteristics In Cotton ( G. Hirsutum L.), Mustafa Ali̇ Kaynak, Aydin Ünay, İsa Özkan, Hüseyi̇n Başal

Turkish Journal of Agriculture and Forestry

This research was conducted at the Adnan Menderes University Agricultural Faculty.The objectives of the study were to investigate the heterotic effects of earliness and agricultural and quality characters under Aegean region conditions, where earliness is extremely important, and to determine correlations among earliness characters and correlations among earliness, yield, ginning output, seed cotton weight per boll and quality characteristics in cotton (Gossypium hirsutum L). In the 1995, F 1 generation, and in 1996 the F 2 generation were obtained, and in 1997, F 1 and F 2 generations were grown with parents in randomized block design with three replications. The …

Effects Of Genotype And Concentration Of 2,4-D On Callus Induction And Plant Regeneration From Young Inflorescences Of Dallisgrass ( Paspalum Dilatatum Poir), Ersi̇n Can, Nafi̇z Çeli̇ktaş, Rüştü Hati̇poğlu

Turkish Journal of Agriculture and Forestry

This study was conducted to determine the effects of genotype and 2,4-D concentrations on the callus induction and plant regeneration from young inflorescences of dallisgrass ( Paspalum dilatatumPoir). Segments of young inflorescences from six different ecotypes of dallisgrass were cultured on MS-medium containing different con-centrations of 2,4-D ( 2, 4, 6, 8 and 10 mg/l). The results of the study showed that the ecotypes were significantly different in cal-lus induction ratio, callus weight per petri dish and plant regeneration from the young inflorescences. With respect to the ecotypes, callus induction ratio varied from 17.5 % to 65 %, callus weight …

Estimation Of Inheritance Of Some Agronomical Characters In Common Wheat By Diallel Cross Analysis, Okan Şener, Mehmet Kilinç, Tacetti̇n Yağbasanlar

Turkish Journal of Agriculture and Forestry

This study was conducted to determine the genetic structure of a population which included six common wheat cultivars or lines and crosses of half diallel cultivars or lines. It was concluded that the epistatic effect was significant for a weight of 1000 grains and yield per plant, while the additive effect was significant for period of maturity, the number of spikelets per head, and the number of kernels per hear. The dominance effect was found in yield per plant. A partial dominance effect was found in other char-acters. It was found that at least 4 pairs of genes were effective …

The Response Of Sunflower Grain Yield To Water, Abdullah Kadayifçi, Osman Yildirim

Turkish Journal of Agriculture and Forestry

The main aims of this study were to obtain grain and oil yields of sunflower ( Helianthus annuus L.) under adequate and limited soil water supply during the total growing season and under limited soil water supply at the early vegetative, late vegetative, vegetative, flowering and yield formation periods, to find out the sensitive periods to soil water deficits, and to determine yield response factors (k y ). The experiments were conducted in the fields of the Research Farm of the Agricultural Faculty, Ankara University, in 1994 and 1995. It was found that the highest grain and oil yields were …

Performances Of Some Promising Strains Of Common Wheat Under The Conditions Of Marmara Region, Köksal Yağdi

Turkish Journal of Agriculture and Forestry

In this study, eight strains from five different combinations improved for the South Marmara Region and two cultivars of bread wheat were used as the plant materials. The cultivars used in the experiment have been widely grown in this region. Some important agronomic traits of both cultivars and strains were determined in yield experiments lasting four years. Plant height, seed number and seed weight per spike, 1000-seed weight, seed yield and hectoliter weight were examined and compared with the control cultivars and strains of F 6 -F 9 generations. The results of the four-year research indicated that some strains, especially …

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

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

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 …

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 …

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

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 …