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Articles 301 - 316 of 316
Full-Text Articles in Forest Sciences
A Research On The Chemical Composition Of Pear Juice, Feryal Karadeni̇z
A Research On The Chemical Composition Of Pear Juice, Feryal Karadeni̇z
Turkish Journal of Agriculture and Forestry
The chemical composition of pear juice, prepared from Akça, Ankara, Passe Crassane, Santa Maria, Starkrimson, Seker and Williams varieties, was investigated. Fructose (mean, 5.41%) was the main sugar component in pear juice samples and it was followed by glucose (mean, 2.06%) and sucrose (mean, 0.52%). L-malic acid had the highest concentration (mean, 3.63 g/l) and small amount of citric acid was also found. Mineral compounds were ranked as K, P, Mg, Ca, Na and Fe in decreasing order, respectively.
Effect Of The Addition Of Zeolite To The Soil On Nitrification, Ahmet Ali̇ Işildar
Effect Of The Addition Of Zeolite To The Soil On Nitrification, Ahmet Ali̇ Işildar
Turkish Journal of Agriculture and Forestry
In this research, the effect of zeolite on the nitrification of NH 4 + to NO 3 - which can result in the loss of N through the leaching of NO 3 - was investigated and the change in this effect at the different rates of soil moisture was studied. The experiment was arranged into a factorial design with two replications by using five surface soil samples (0-20 cm) which were taken from Isparta-Atabey region. Four rates of zeolite (0, 12.5, 25.0 and 50.0 g zeolite kg -1 soil) were mixed with soils and a solution containing ammonium sulphate ( …
Effect Of Phosphorus Fertilizers And Application Methods On The Yield Of Wheat Grown Under Dryland Conditions, Sabri̇ Gökmen, Özer Sencar
Effect Of Phosphorus Fertilizers And Application Methods On The Yield Of Wheat Grown Under Dryland Conditions, Sabri̇ Gökmen, Özer Sencar
Turkish Journal of Agriculture and Forestry
This study was conducted to investigate the efficiency of diammonium phosphate (DAP) and triple superphosphate (TSP) as phosphorus (P) sources and the effect of fertilizer application methods on the grain yield, yield components and other characteristics of winter wheat. The research was conducted in the ecological conditions of Tokat-Kazova during the 1990-1991 and 1991-1992 growing seasons. Bezostaja-I and Kirkpinar-79 cultivars were used as the plant materials. DAP and TSP fertilizers were applied according to four different methods, i. e., broadcasting, with seed, application 5 cm to the right and left of the seed and 5 cm below the seed. The …
The Effect Of Some Boron Compounds And Water Repellents On The Fire Resistanceproperties Of Scotch Pine Wood, Yalçin Örs, Musa Atar, Hüseyi̇n Peker
The Effect Of Some Boron Compounds And Water Repellents On The Fire Resistanceproperties Of Scotch Pine Wood, Yalçin Örs, Musa Atar, Hüseyi̇n Peker
Turkish Journal of Agriculture and Forestry
This investigation was designed to improve the fire-resistance properties of polyethlene glycole (PEG-400) and some water repellent solutions used to improve the flammability properties of wood. For this reason, samples from Scotch pine wood were impregnated according to ASTM-D 1413-76 boric acid, borax, sodium perbo-rate diluted or dissolved in PEG-400 were used as a preservative materials, and paraffin, styrene, methylmethacrylate and wax were used as a water repellent materials. It was found that, compounds contained boron increased the water resistance properties and water repellents materials resulted in the same decreasing the flammability behavior of wood.
Apomictic Development In Tetraploid Red Clover ( Trifolium Pratensel.), Gönül Algan, H. Nurhan Bakar
Apomictic Development In Tetraploid Red Clover ( Trifolium Pratensel.), Gönül Algan, H. Nurhan Bakar
Turkish Journal of Agriculture and Forestry
This study was carried out in order to determine to what extent apomictic development would affect seed formation in the natural tetraploid red clover variety E2. Some Taracaxum-type and lxeris-type development, was determined. It was concluded that embryo sac development did not occur through aposporous development whereas it could occur through diplosporous devel-opment.
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.
Studies On Effects Of Russian Knapweed (Acroptilon Repens (L.) Dc) And Butter Cup (Ranunculus Damascenus Boiss And Gaill), Causing Problem In Winter Wheat, On Yield And Determination Of Their Economical Thresholds In Van, İlhan Kaya, Işik Tepe
Turkish Journal of Agriculture and Forestry
In this study, effects of different densities of Russian knapweed (Acroptilon repens (L.) DC) and butter cup (Ranunculus damascenus Boiss and Gaill) on yield and yield components of winter wheat were researched in Van. It was determinated that, increasing densities of A. repens have decreased number of spike, grain, straw and total yield of wheat. But, increasing densities of R. damascenus have not been effective on yield and yield components because of being small constitution and having short growing period. Ten plants per m^2 of A. repens reduced grain and straw yields respectively 24.3 and 19%. These amounts are over …
The Effects Of Grafting Times And Types On The Quality Of Grafted Vine Production Under The Nursery Conditions, Hüseyi̇n Çeli̇k, Ferhat Odabaş
The Effects Of Grafting Times And Types On The Quality Of Grafted Vine Production Under The Nursery Conditions, Hüseyi̇n Çeli̇k, Ferhat Odabaş
Turkish Journal of Agriculture and Forestry
In this study, carried out during 1992-1994, Aphonse Lavallee, Cardinal, Çavuş and Hafızali grape CVs were grafted on the Vitis berlandieri x Vitis riparia Kober 5BB and S04 rootstocks by omega and chip-budding grafting types under nursery conditions. The rootstock cuttings were planted into nursery plots in spring time and they were grafted on the August, 15; September, 15; October, 15 and November, 15; after the cuttings were fully rooted and had well-developed shoots. The shoot length and growth rate, number of roots and fresh root weight per vinegraft determined to the aim of establishing the effects of grafting time …
A Research On The Analysis Of Heterotic Effects For Certain Agronomical Characters In Cross Population Of Sunflower (Helianthus Annuus L.), Abdurrahi̇m Tanju Göksoy, Aydin Türkeç, Zeki̇ Meti̇n Turan
A Research On The Analysis Of Heterotic Effects For Certain Agronomical Characters In Cross Population Of Sunflower (Helianthus Annuus L.), Abdurrahi̇m Tanju Göksoy, Aydin Türkeç, Zeki̇ Meti̇n Turan
Turkish Journal of Agriculture and Forestry
This research was carried out to determine the hybrid vigour (heterosis) for certain agronomical characteristics in the new - improved hybrid combinations in sunflower, during the years 1994 - 1995 at the Experimental and Research Centre of Faculty of Agriculture, Uludağ University. In the first year of this research, 7 CMS (female) lines and 4 Restorer (male) testers were crossed in all the possible combinations and 28 F_1 hybrids were obtained. In the second years, 28 F_1 hybirds, 11 parents and a standard variety (a commercial hybrid variety) were tested in a randomized block desing with three replications. According to …
The Effect Of Interesterification Reactions On The Tocopherols And The Sterols In Fats, Azi̇z Teki̇n, Muammer Kayahan
The Effect Of Interesterification Reactions On The Tocopherols And The Sterols In Fats, Azi̇z Teki̇n, Muammer Kayahan
Turkish Journal of Agriculture and Forestry
In this study, interesterification which has been used in developed countries for years and tried in Turkey recently, was applied to a sunflower oil and beef tallow blend (80:20). 25 sample fats were obtained by applying interestification at different temperatures and times by adding 0.3% sodium methoxide. The changes in the tocopherols and sterols of these fats were investigated. It was determined that the reaction was completed at 70°C in 45 minites and at higher temperatures and longer times using lipase hydrolysis. In conclusion tocopherols and sterols were esterified more quickly as time and temperature increased. Therefore, they were more …
Landscape Management And Biodiversity, Emi̇n Zeki̇ Başkent
Landscape Management And Biodiversity, Emi̇n Zeki̇ Başkent
Turkish Journal of Agriculture and Forestry
For the protection, enhancement and management of forests for today's and future generations, an understanding of the spatial structure of forest ecosystems along with base forest management planning are necessary. In this study are presented an introduction, a description, an explanation of different approaches and the basic principles of landscape management or ecosystems management within the evolution of the forest management process. Furthermore, the issue of biodiversity or biological diversity, one of the most important factors influencing the flourishing of landscape management, is described, its basic components are presented and its effects on management planning are discussed. It is concluded …
Effects Of Paclobutrazol On Growth And Flowering Of Bougainvillea Spectabilis Willd, Osman Karagüzel
Effects Of Paclobutrazol On Growth And Flowering Of Bougainvillea Spectabilis Willd, Osman Karagüzel
Turkish Journal of Agriculture and Forestry
The effects of paclobutrazol were examined in respect to the growth and flowering of Bougainvillea spectabilis WILLD under conditions of long and short natural photoperiods. In the middle of July and at the beginning of November, doses of paclobutrazol; 0 (control), 10, 20, 30 and 50 mg a.e./pot soil drench, and 0 (control), 125, 250, 500 and 1000 ppm foliage spray, were applied to plants grown in 18 cm pots (h=16.5 cm). With the application of paclobutrazol in the form of soil drench and foliage spray, the time from application to flowering decreased slightly under the long photoperiod conditions but …
Relationships Of Modulus Of Rupture To Soil Properties In Konya Plain, Cevdet Şeker, Sai̇m Karakaplan
Relationships Of Modulus Of Rupture To Soil Properties In Konya Plain, Cevdet Şeker, Sai̇m Karakaplan
Turkish Journal of Agriculture and Forestry
Some physical and chemical analyses were done in sexteren surface (0-15 cm) soil samples from the area among Konya-Çumra-Karapınar, showing soil crusting. Relationships between sois properties and modulus of ruputre were studied. There was a positive relationship between modulus of rupture and available water silt percentages, dispersion ratio, electrical conductivity, organic matter percentage, lime content and soluble calcium, magnesium, sodium, sulfate and chlorine contents. There was a negative relationship between modulus of rupture and sand percentage, aggregate stability, exchangeable calcium content, soluble bicarbonate content. The relationships between modulus of rupture and particle density, field capacity percentage, wilting point per-centage, clay …
Utah Northern Goshawk Project: Environmental Assessment, United States Forest Service
Utah Northern Goshawk Project: Environmental Assessment, United States Forest Service
All U.S. Government Documents (Utah Regional Depository)
This environmental assessment amends the management direction established in current land and resource management plans for the Ashley, Dioxie, Fishlake, Manti-LaSal, Uinta, and Wasatch-Cache National Forests.
Effect Of Forest Management On Alpha Diversity Of Ground Vegetation In Boreal Forests: A Model Approach, Marja Kolstrom, Sari Pitkanen
Effect Of Forest Management On Alpha Diversity Of Ground Vegetation In Boreal Forests: A Model Approach, Marja Kolstrom, Sari Pitkanen
Aspen Bibliography
No abstract provided.
Structural Lumber Properties Of Hybrid Poplar, D.E. Kretschmann, J.G. Isebrands, G. Stanosz, J.R. Dramm, A. Olstad, D. Cole, J. Samsel0
Structural Lumber Properties Of Hybrid Poplar, D.E. Kretschmann, J.G. Isebrands, G. Stanosz, J.R. Dramm, A. Olstad, D. Cole, J. Samsel0
Aspen Bibliography
The Lake States of Michigan, Minnesota, and Wisconsin consist of 49.4 million hectares (112 million acres) of land, 19.8 million hectares (49 million acres) of which are forested, with 6% of those having been removed by law from timber production.