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Forest Sciences Commons™

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1998

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Articles 151 - 171 of 171

Full-Text Articles in Forest Sciences

Forecasting Of The Long-Term Allowable Cut For The Akçasu Forestry Enterprise, Altay Uğur Gül Jan 1998

Forecasting Of The Long-Term Allowable Cut For The Akçasu Forestry Enterprise, Altay Uğur Gül

Turkish Journal of Agriculture and Forestry

The long-term allowable cut was ensured using data of Forest Menegement Plan of the Akçasu Forest enterprise. In addition, actuel forest state was approximated to an optimal forest state within different rotation age. Three forest management units were established. A linear programming model was developed on used to test three different strategies for the black pine and beech management unit and five different strategies for the oak management unit. For the first period, the regeneration, afforestation area, allowable cut and total cut was 210.0 and 341.0 hectar, 58546.0 m 3 and 1764516 m 3 , respectively.

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A Comparison Of Some Maize Inbred Lines And Their Testcrosses Under The Second Cropconditions, Semiha Çeçen, Sadık Çakmakçi, İsmail Turgut Jan 1998

A Comparison Of Some Maize Inbred Lines And Their Testcrosses Under The Second Cropconditions, Semiha Çeçen, Sadık Çakmakçi, İsmail Turgut

Turkish Journal of Agriculture and Forestry

In this study ten maize inbred lines and their testcrosses were investigated in terms of some traits. Dependence of test-crosses on the inbred lines and similarity of the inbred line groups with their testcross groups were examined. Based on the results, preliminary parent selection can be used to make cross combinations, but testcross procedure has to be done in order to reach cer-tain results.

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The Present Situation Of Commercial Mushroom ( Agaricus Bisporus) Growing And Somesuggestions On The Improvement Of Production Buildings And Complication At Black Searegion, Yusuf Demi̇r, Aysun Uzun Jan 1998

The Present Situation Of Commercial Mushroom ( Agaricus Bisporus) Growing And Somesuggestions On The Improvement Of Production Buildings And Complication At Black Searegion, Yusuf Demi̇r, Aysun Uzun

Turkish Journal of Agriculture and Forestry

In recent years, there has been considerable interest in mushroom growing at the Black Sea Region. In order to encourage mushroom growers in term of giving them inclination of mushroom growing, the potential, problems and the costructural situation (which already exists) of mushroom production sheds in the region should be examined. For this reason, 24 mushroom growing plants located in the Middle and East Black Sea Region (Ordu, Samsun, Sinop, Amasya and Trabzon provinces) were included to the present study to be investigated. It was from the present study that most of the mushrom growing plants in the region were …

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The Effects Of One And Two Year-Old Seedling Rootstocks On Nursery Trees Development Inapricot, S. Zeki Bostan, Ali İslam Jan 1998

The Effects Of One And Two Year-Old Seedling Rootstocks On Nursery Trees Development Inapricot, S. Zeki Bostan, Ali İslam

Turkish Journal of Agriculture and Forestry

This study was carried out in Yüzüncü Yil University, Faculty of Agriculture, Depertment of Horticulture. In this research, the length and diameter development of 4 apricot forms on seedling rootstocks with one and two development of 4 apricot forms seedling rootstocks with one and two years old were ihvestigated. The length and diameter development on one year old rootstocks were 88.42 cm, 8.87 mm; on two year old rootstocks were 114.17 cm, 11.52 mm, respectively. There were signigicant differences between forms and rootstocks as well.

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Genetic Relationships Of Turkish Bread Wheat Cultivars, Nusret Zenci̇rci̇ Jan 1998

Genetic Relationships Of Turkish Bread Wheat Cultivars, Nusret Zenci̇rci̇

Turkish Journal of Agriculture and Forestry

Forty-two bread wheat cultivars released up to 1990 in Turkey have been investigated in order to understand their genetic relationships. Correlation, regression and principal component analyses have been applied to cultivar-to-cultivar parentage coefficients and similarity indices based on pedigree data. Correlation and regression analyses between cultivar-to-cultivar parentage coefficients and similarity indices have shown higher relationships implying that both estimates could be used interchangeably to predict genetic relationships in cultivars. Principal component analyses failed to group cultivars clearly, but some subgrouping were obtained.

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Effects Of Temperature And Time Of Harvest On The Growth Andyield Of Aubergine ( Solanum Melongena L.), Ahmet Kürklü Jan 1998

Effects Of Temperature And Time Of Harvest On The Growth Andyield Of Aubergine ( Solanum Melongena L.), Ahmet Kürklü

Turkish Journal of Agriculture and Forestry

An experimental study was conducted to define the response of aubergine to different temperatures in controlled greenhouses. Set temperatures of the greenhouses were 14, 18, 22, 26 and 30°C. In terms of vegetative growth, the plant response was the highest to the highest temperature then gradually decreasing for the lower temperatures. This was in contrast with the fruit development since as the temperature decreased from 30°C, mean fruit weight and size increased, and the total fruit yield was highest in 22°C which indicated an optimum temperature. However, there was no optimum for vegetative growth. This was found, by using a …

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The Effects Of Phosphate Treatments On Chromosome Pairing In Diploid And Autotetraploid Meadow Fescue ( Festuca Pratensishuds.), Bilal Deni̇z, Ayten Tufan Jan 1998

The Effects Of Phosphate Treatments On Chromosome Pairing In Diploid And Autotetraploid Meadow Fescue ( Festuca Pratensishuds.), Bilal Deni̇z, Ayten Tufan

Turkish Journal of Agriculture and Forestry

This study was carried out under greenhouse conditions in 1994-1995. The influence of phosphate treatments (0, 1, 2, 3 and 4g P 2 O 5 /pot) on meiotic chromosome pairing and the number of arms bound at the first metaphase (MI) in plants of diploid Senu variety of meaddow fescue ( Festuca pratensis Huds.) and its advanced generation (C 6 ) autotetraploid (Tetra Senu) were studied. In diploids, quadrivalents and univalents frequencies showed no difference with changes in phosphate treatments. Total bivalent frequency per cell remained stable with phosphate changes in spite of a significant increase in the number of …

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Effects Of Modified Atmosphere Packaging On Post Harvest Qualities Of Pink Tomatoes, Ali Batu, A. Keith Thompson Jan 1998

Effects Of Modified Atmosphere Packaging On Post Harvest Qualities Of Pink Tomatoes, Ali Batu, A. Keith Thompson

Turkish Journal of Agriculture and Forestry

An experiment retail plastic packaging system was used to compare the atmospheric composition within sealed packs containing tomato fruits. A range of plastic films with different permeability properties were tested to study the effects of these conditions on the changes in postharvest qualities of tomatoes harvested at the pink stage of maturity and stored at 13 o C for 60 days. The films used were 20 micron (PE20) and 50 micron (PE50) polyethylene, 10 micron polyvinylcholoride (PVC) or 25 micron polypropylene (PP) compared with unwrapped fruit as a control. Tomatoes were evaluated for changes in colour, firmness, weight, titratable acidity, …

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The Influence Of Phosphate Treatment On Chromosome Segregations And Tetrad Regularity And Using Tetrads In Determination Of Regular Meiosis Diploid ..., Bilal Deni̇z, Ayten Tufan Jan 1998

The Influence Of Phosphate Treatment On Chromosome Segregations And Tetrad Regularity And Using Tetrads In Determination Of Regular Meiosis Diploid ..., Bilal Deni̇z, Ayten Tufan

Turkish Journal of Agriculture and Forestry

This study was carried out under greenhouse conditions in 1994-1995. The influence of phosphate treatments (0, 1, 2, 3 and 4g P 2 O 5 /pot) on chromosome segregaiton at the first anaphase (AI) and tetrad regularity in plants of diploid Senu variety of meadow fescue ( Festuca pratensisHuds.) and its artificial autotetraploid were studied. In addition, the relationship was determined between balanced AI segregations and regular tetrads with respect to regular meiosis. AI segregations were often balanced in eutetraploids but the frequency of balanced groups was found to be lower than that of the diploids. The difference between diploid …

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Some Factors Affecting On Determination And Measurement Oftomato Firmness, Ali Batu Jan 1998

Some Factors Affecting On Determination And Measurement Oftomato Firmness, Ali Batu

Turkish Journal of Agriculture and Forestry

Firmness is one of the most important factor for determination of tomatoes quality. Distructive measurement of tomato firmness is one of the evaluation methods of fruit firmness. The Universal Instron is most common used machine for measurement of most adeqequate fruit firmness. During destructive measurement of firmness considedation of force or deformation values as a firmness of fruits could give incorrect result and taking epicarp strength over deformation values is more accurate to concern the firmness of tomato. Two of possible minimum firmness limits were suggested for tomato fruits at the point of retail marketing or using at home. All …

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Sorption Of Aldicarb Sulfoxide By Samples Of Some Calcareous Soils From Turkey, Kemal Y. Gülüt, Mahmut Sayin Jan 1998

Sorption Of Aldicarb Sulfoxide By Samples Of Some Calcareous Soils From Turkey, Kemal Y. Gülüt, Mahmut Sayin

Turkish Journal of Agriculture and Forestry

Sorption of aldicarb and aldicarb sulfoxide was investigated spectrophotometrically on 16 soil samples. Ten of them were from the Çukurova region. The results showed that organic matter is the single soil property to give correlation with sorption of aldicarb. Clay minerals are also important in sorption but their effect is masked by fine carbonates and organic matter. CaCO 3 sorbs aldicarb weakly. Aldicarb sulfoxide was also sorbed by soil constituents very weakly.

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Effect Of Paclobutrazol On Vegetative Growth And Fruit Quality Of Some Peaches Grown Insamsun, Şükriye Kurnaz Bi̇lgener, Hüsnü Demi̇rsoy, Neriman Beyhan Jan 1998

Effect Of Paclobutrazol On Vegetative Growth And Fruit Quality Of Some Peaches Grown Insamsun, Şükriye Kurnaz Bi̇lgener, Hüsnü Demi̇rsoy, Neriman Beyhan

Turkish Journal of Agriculture and Forestry

This research was carried out in Çarsamba, Samsun during 1991-1993 by using Paclobutrazol which is a growth reter-dant, three times in a year (Spring, Summer and Autumn) to Cardinal, Redhaven and Glohaven peach varieties. It was also applied from the soil in spring. It was found that the application of Paclobutrazol from the soil was more effective than the leaf application. It's application in fall did not affect the vegetatif development. The spring and summer applications of it showed similiar effects. Application Paclobutrazol at a concentration of 1000 ppm to leaves was effective on vegetative development. Application of paclobu-trazol to …

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Operation Research Methods In The Forest Management Planning, Altay Uğur Gül Jan 1998

Operation Research Methods In The Forest Management Planning, Altay Uğur Gül

Turkish Journal of Agriculture and Forestry

The purpose of this study is to approximate the actual forest state to an aptimal forest state within different conversion period lenghts, to ensure the sustainability of allowable cut over planning horizon, to maximize the total present net value calculated with financial analysis. A linear programming model was developed and used to test 436 different strategies for planning of Gazipasa Forest Management Unit. The value of the objective function of the solution that maximized the total present net value is 63352171000 TL and the amount of the total volume is 9054041 m3. For the first plan period, when the objective …

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Physical Environment Factors That Influence Human Health In Forest Product Industry, Önder Barli Jan 1998

Physical Environment Factors That Influence Human Health In Forest Product Industry, Önder Barli

Turkish Journal of Agriculture and Forestry

In this study, some informations connected with physical environmental factors are given in Blacksea Region in Turkey. In addition, the results of some data obtained from environmental factors are given in woodworking industry in Turkey and other countries. The common point of all them studies, primarily, are noise, atmosferic conditions of workplace, dust, gas, steam. However, there are different kinds of problems in woodworking indusry. It is reality, that there are also the same kind of problems in this subject in Turkey. This study contains some suggestions about the woodworking industry in Turkey.

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Response To Inoculation And Sowing Date Of Soybean Under Bafra Plain Conditions In The Northern Region Of Turkey, Nevzat Uslu, Enver Esendal Jan 1998

Response To Inoculation And Sowing Date Of Soybean Under Bafra Plain Conditions In The Northern Region Of Turkey, Nevzat Uslu, Enver Esendal

Turkish Journal of Agriculture and Forestry

The Bafra Plain (latitude 41 0 35' N; longitude 35 0 56' E) which located surrounding of Kizil Irmak delta in the northern Turkey, has a short plant growing season for spring sowings. However, the soils of the region (about 80 000 ha) may have an important soybean [ Glycin max (L.) Merr.] production potential with using the earliest or mid-earliest cultivars. Field experiments were conducted to determine the optimum sowing date of soybean, and effects of inoculation and sowing date on the yield and yield components. P-9292 soybean cultivar was evaluated either inoculated with Rhizobium japonicum or not inoculated …

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Cultivar, Weed And Row Spacing Effects On Some Agronomic Characters Of Safflower ( Carthamus Tinctorius L.) In Spring Planting, Nevzat Uslu, Ali Akin, M. Basri Hali̇tli̇gi̇l Jan 1998

Cultivar, Weed And Row Spacing Effects On Some Agronomic Characters Of Safflower ( Carthamus Tinctorius L.) In Spring Planting, Nevzat Uslu, Ali Akin, M. Basri Hali̇tli̇gi̇l

Turkish Journal of Agriculture and Forestry

Safflower ( Carthamus tinctorius L.) can be a potential oilseed crop for the low-rainfall areas of Central Anatolia, Turkey. The purpose of this study was to determine response of safflower cultivars to weed and the row spacing. The experimental design was used a split-split plot arrangement in a completely randomized block with 3 replications. Main plots were cultivars (5-118 and 5-154), sub plots were weed treatment (weed not removed and weed removed manually) and sub-sub plots were row spacing (20, 40 and 60 cm). The hand weeding decreased the weed density by 75.3%, conversely increased the safflower yield by 36.3%. …

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Drug Yield And Essential Oil Of Thymus Vulgaris L. As In Influenced By Ecological And Ontogenetical Variation, Mensure Özgüven, Sezen Tansi Jan 1998

Drug Yield And Essential Oil Of Thymus Vulgaris L. As In Influenced By Ecological And Ontogenetical Variation, Mensure Özgüven, Sezen Tansi

Turkish Journal of Agriculture and Forestry

Drug yield and volatile oil content and its components of Thymus vulgaris were investigated during the different growing periods under both lowland and mountainous conditions. The highest drug yields were obtained from lowland conditions during the post flowering stage. Also, it has been determined that environmental conditions have significantly influenced the harvest dates. The 17 components were identified in the essential oil of Thyme. Essential oil content and its components were significantly affected by both climatic and ecological conditions and various harvest dates.

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Anther Culture Potential Of Linseed ( Linum Usitatissimuml.):Effects Of Genotypes And Pretreatment On Callusformation And Differentiation, Orhan Kurt, Gareth. M. Evans Jan 1998

Anther Culture Potential Of Linseed ( Linum Usitatissimuml.):Effects Of Genotypes And Pretreatment On Callusformation And Differentiation, Orhan Kurt, Gareth. M. Evans

Turkish Journal of Agriculture and Forestry

This study is concerned with the production of haploids of linseed. Anthers of eight genotypes were cultured both on solid and in liquid medium. It was found that callus induction rate was low in both media and also the cultivars significantly affected callus induction rate both on solid and in liquid medium. The cultivar Blue-Chip gave, on average, the maximum (3.67%) callus induction rate on solid medium and the cultivar Antares gave, on average, the maximum (3.35%) callus induction rate in liquid medium. The cultivar Norman produced callus on solid medium but did not produce any callus in liquid medium. …

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The Opportunities Of Using Mushroom Compost Waste In Strawberrygrowing, Ahsen Işık Özgüven Jan 1998

The Opportunities Of Using Mushroom Compost Waste In Strawberrygrowing, Ahsen Işık Özgüven

Turkish Journal of Agriculture and Forestry

The aim of this study is to see whether Mushroom compost waste (MCW) can be used as an alternative fertilizers to Farm yard manure (FYM) because the latter is very expensive in Strawberry growing. Experiment was carried out with frigo plants of Douglas cv. in summer planting system. In this experiment, both MCW (test material) and FYM (as control) were used. The obtained MCW and FYM were used 10, 20 and 40 tons per hectare. Experiment was designed as Randomized Blocks with 3 replicates. Applications in question during the growing season are observed the earliness, the yield per plant and …

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Influence Of Natural Zeolite On Performance Of Laying Hens And Egg Quality, Ergin Öztürk, Güray Erener, Musa Sarica Jan 1998

Influence Of Natural Zeolite On Performance Of Laying Hens And Egg Quality, Ergin Öztürk, Güray Erener, Musa Sarica

Turkish Journal of Agriculture and Forestry

This experiment was conducted to study the effects of natural zeolite on the performance of laying hens. One hundred and eighty 37-week-old Babcock B-300 hens were fed with a diet containing 0, 20, 40, 60 and 80 g clinoptilolite/kg in an experiment consisting of 36 hens per treatment during a 4x28 days experimental period. All feeding programs were isocaloric and isonitrogenous. Hens were put at random into 5 treatment groups (12 replicates and 36 hens per treatment). No significant dietary effects were observed in terms of body weight, feed consumption, feed efficiency ratio, the number of eggs laid per hen, …

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Ecology Of The Eastern Cottonmouth (Agkistrodon P. Piscivorus) At Back Bay National Wildlife Refuge: A Comparative Study Of Natural And Anthropogenic Marsh Habitats, Chad Lee Cross Jan 1998

Ecology Of The Eastern Cottonmouth (Agkistrodon P. Piscivorus) At Back Bay National Wildlife Refuge: A Comparative Study Of Natural And Anthropogenic Marsh Habitats, Chad Lee Cross

Biological Sciences Theses & Dissertations

Mark-recapture sampling and radiotelemetry were used to investigate populations of the eastern cottonmouth, Agkistrodon p. piscivorus, in both natural and anthropogenic marsh habitats at Back Bay National Wildlife Refuge (BBNWR), Virginia Beach, Virginia from autumn 1995 to late spring 1998. Mark-recapture subjects were captured, marked by ventral scale-clipping, and released back into the population. A modified Schnabel Census estimator was used to estimate population sizes and corresponding densities in both marsh systems based on a total of 244 captures of 222 individuals. Most snakes were found >0.05 in from water, but it was apparent that proximity to water played …

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