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Forest Sciences

2000

Articles 91 - 98 of 98

Full-Text Articles in Agriculture

Isosteric Sorption Heat Determination For Some Starchy Grains, Serdar Özteki̇n, Yurtsever Soysal Jan 2000

Isosteric Sorption Heat Determination For Some Starchy Grains, Serdar Özteki̇n, Yurtsever Soysal

Turkish Journal of Agriculture and Forestry

InIn this study, isosteric sorption heat for 8 different starchy grains was determined by the application of the Clausius- Clapeyron equation to sorption isotherms. The latent heat of vaporisation of free water was not significantly different from the isosteric sorption heats of barley, durum wheat, oats, sorghum (31) and sorghum above 14% d.b. moisture content. There was no significant difference among the latent heat of vaporisation of free water and isosteric sorption heats of soft wheat, hard wheat and wheat (Waldron) above the 17% moisture content. Isosteric sorption heat of soft wheat was calculated to be 3341.5 kJ kg -1 …

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The Effect Of Soil Profile Depth On Fallow Efficiency Under Ankara Conditions, Oğuz Başkan, İlhami̇ Ünver Jan 2000

The Effect Of Soil Profile Depth On Fallow Efficiency Under Ankara Conditions, Oğuz Başkan, İlhami̇ Ünver

Turkish Journal of Agriculture and Forestry

The aim of this study was to compare the fallow efficiencies of shallow and deep soil profiles and to examine the effects of nitrogen fertilization on the grain yields in continuous wheat and fallow-wheat systems in the Ankara Region. The experimental study was conducted at the Beytepe (Lodumlu) Research Institute in two different fields. Soil moisture contents were determined at six depths between 0 and 90 cm in deep soil and four depths between 0 and 40 cm in shallow soil. Continuous wheat and fallow-wheat plots were fertilized with (NH_4)_2SO_4 in 2 kg/da and 4 kg/da N doses. The results …

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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 Jan 2000

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 …

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Using The Parcel Transposition Ratio (Pyo) In The Evaluation Of Land Consolidation Projects, Yaşar Ayranci Jan 2000

Using The Parcel Transposition Ratio (Pyo) In The Evaluation Of Land Consolidation Projects, Yaşar Ayranci

Turkish Journal of Agriculture and Forestry

In this study, land consolidation projects were evaluated by a different way than usual. According to the results of two different models applied to the Tokat-Erbaa-Yukarı Çandır Village land consolidation area, first of all the previous owners of parcels were identified. Then using these values, in Model A 22.18% of the total area and in Model B 18.31% of the total area were given to the previous owners. For both models, statistical calculations were made between the previous parcel(s) in a block and the parcel(s) given in the same block for all holdings. The relationships were found to be significant …

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Oxygen Delignification Of Wheat Straw Organosolv Pulp, Hüseyi̇n Kirici, Mustafa Usta, Mehmet Akgül Jan 2000

Oxygen Delignification Of Wheat Straw Organosolv Pulp, Hüseyi̇n Kirici, Mustafa Usta, Mehmet Akgül

Turkish Journal of Agriculture and Forestry

In this study, in order to determine optimum conditions for peroxide reinforced oxygen delignification of wheat straw organosolv pulps, five experiments were carried out changing the alkali ratio, peroxide charge and reaction time. After the statistical evaluations of the data obtained, optimum delignification conditions were found to be as follows: NaOH ratio 6%, H_2O_2 ratio 2.5%, reaction temperature 80 ^oC, reaction time 60 min., oxygen pressure 10 kg/cm^2 , concentration 16%. Thus; yield, viscosity and tear index of wheat straw organosolv pulps delignificated with oxygen added peroxide decreased by 18%, 20% and 18% respectively. In addition, residual lignin content of …

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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 Jan 2000

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 …

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Exploring The Concept Of A Forest Landscape Management Paradigm, Emi̇n Zeki̇ Başkent, Haci̇ Ahmet Yolasiğmaz Jan 2000

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 …

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Land Suitability Classification Of Tokat-Kazova Agricultural Farm Using Two Different Land Evaluation Methods, Fevzi̇ Akbaş, Mustafa Kiliç Jan 2000

Land Suitability Classification Of Tokat-Kazova Agricultural Farm Using Two Different Land Evaluation Methods, Fevzi̇ Akbaş, Mustafa Kiliç

Turkish Journal of Agriculture and Forestry

The suitability was determined of Kazova Agricultural Farm soils for land utilization types, both those in use and those with a potential for use. Simple Limitation and Şenol Land Evaluation Methods were used. The results from the Simple Limitation Method showed that the Yeşilırmak and Eğertepe series are permanently unsuitable and the Mera series is currently unsuitable for all of the determined land utilization types. While the çaylı and Obalar series are marginally suitable for the land utilization types, the İşletme series is moderately suitable. The Yol series, which has soils with the lowest limitation of the farm soils, is …

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