Life Sciences Commons^™

Withdrawal Strength Of Some Screws And Nails In Waferboard And Picea Or Oriental Beech, Ayhan Özçi̇fçi̇, Sefer Doğanay

Turkish Journal of Agriculture and Forestry

In this paper; it was carried out to determine the withdrawal strength of some screws and nails of WFB, picea and oriental beech that are using at furniture product. For this reason, it was applied the withdrawal strength of experimental specimens with different screws and nails. According to the result of experiments, it was obtained the highest withdrawal strength result of oriental beech whose face perpendicular to screw 20x35 (17,670 N/mm^2). It was obtained the highest withdrawal strength result of picea whose face parellel to nails such as 16x30 (6,920 N/mm^2).

Seasonal Variation In Phenolic Constituents Of Hazelnut (Coryllus Avellana L.) And Chestnut (Castanea Sativa Mill.) Leaves And Shoots, Şükri̇ye Kurnaz Bi̇lgi̇ner

Turkish Journal of Agriculture and Forestry

In this research, the seasonal variation in total phenolic contents in hazelnut and chestnut leaves and shoots was determined. In addition, the phenolic compounds extracted by aqueous alcohol or obtained by acid hydrolysis of the leaves and shoots were separated by paper chromatography (PC). The total phenolic contents of the chestnut leaves and shoots were higher than the hazelnut. In both species, the young shoots had higher total phenolic contents than one year old shoots. The total phenolic content of hazelnut leaves did not show a significant variation, but it rose up to a relatively higher level in August and …

A Research On The Cytological Characters Of Yellow Bluestem (Bothriochloa Ischaemum (L) Keng ) Occured In Natural Maqui Type Vegetation Of Çukurova Region, Ersi̇n Can, Rüştü Hati̇poğlu

Turkish Journal of Agriculture and Forestry

This study was conducted to determine the number and morphological features of somatic chromosomes of yellow bluestem (Bothriochloa ischaemum (L) Keng) dominated in natural maqui type range vegetation of Çukurova region. The results showed that 39 out of the 40 ekotypes had 2n=60 and only one had 2n=50 chromosomes. It was determined that all the chromosomes of yellow bluestem were metacentrich and their lengths ranged from 1.3006 \mum to 3.1294 \mum. The cytotype with 2n=50 had two pairs of chromosomes with satellite and the cytotype with 2n=60 had three pairs of chromosomes with satellite.

The Relationships Among Grain Yield And Some Yield Components In Tir Wheat, Fahri Sönmez, Mehmet Ülker, Nuri Yilmaz, Hatice Ege, Betül Bürün, Rüstem Apak

Turkish Journal of Agriculture and Forestry

Field experiments were conducted in 1994 and 1995 in Van in order to study the relationships between grain yield and yield componets, and the interrelationships among these yield components and other characteristics in Tir wheat. In this research, heading duration, the number of spikes per m 2 , grain filling period, the number of grain per spike, grain weight, and grain yield were studied. Direct and indirect effects of the yield components (the number of spikes per m 2 , the number of grain per spike, and grain weight) on grain yield were found by Path coefficient analysis. Direct and …

Investigations On Soil Erodibility And Some Properties Of The Soils Under Different Land Usetypes In Söğütlüdere Creek Watershed Near Trabzon, Refik Karagül

Turkish Journal of Agriculture and Forestry

In this study, effects of different land use types on some soil properties in the Trabzon-Sögütlüdere watershed were studied. The study area, is located in the East Black Sea Region, 30 kilometers far from Trabzon. Soil samples evaluated in this research were taken from areas under three different land use types; forestland, rangeland and, cultivated land at different altitudes and physio-graphical conditions in such a way that they represent general conditions of the watershed area. Total of 83 soil profiles were determined, 48 in forestland areas, 21 in rangeland and 14 in cultivated areas for three soil depths (0-20 cm, …

The Effects Of Different Rootstocks On Yield And Fruit Quality Of Marsh Seedless And Redblush Grapefruit Cultivars, Önder Tuzcu, Celi̇l Toplu

Turkish Journal of Agriculture and Forestry

In this study which was carried out between the years of 1991 and 1993 at the Department of Horticulture, Faculty of Agriculture, University of Çukurova in Adana, the effects of Troyer and Carrizo citranges, Volkameriana, Yuzu, Cleopatra mandarin, Taiwanica, Beneke trifoliata orange, Citrumelo 1452, Common and Brasilian sour orange rootstocks on the yield and the quality of fruit of Marsh Seedless and Redblush grapefruit varieties were investigated and the most suitable rootstocks for these grapefruit cultivars were tried to be determined in Mediterranean Region of Turkey. The highest yield and the best fruit quality were obtained from the Marsh Seedless …

Investigations On The Biology And Control Of Aurigena Chlorana (Lap. Et Gory) (Coleoptera:Buprestidae) Harmful To Oil Roses In Isparta Province (Turkey), Huri̇ye Zeki̇, Ali̇ Tamer, Kezi̇ban Şule Örmeci̇, Mustafa Çeti̇n Bozkir, Seval Toros

Turkish Journal of Agriculture and Forestry

In this study, biology and control of Aurigena chlorana (Lap. et Gory) (Col.: Buprestidae) which is the most and new harmful on oil roses were investigated in Isparta province. The study has been carried out two temperatures 26±1 o C, 33±1 o C , %65±5 R.H. and 18 hours photoperiod on Rosa damascena Miller. The females laid the average 2371 eggs. The females and males lived for average 96.89, 112.83 days, respectively at 26±1 o C. It was found out that the duration of egg incubation was shorten depending on temperature and this duration was the average 37.94, 22.89 days …

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 …

Determination Of Maize Genotypes Tolerates To Low Temperature At Early Developing Stages In Central Anatolia, Engi̇n Kinaci, Ekrem Kün

Turkish Journal of Agriculture and Forestry

This research has been carried in Ankara and Konya at research fields to identify maize genotypes wihch can tolerate to low degrees of temperatures at early developing stages. Samples has been used in the research were collected from regions where early planting of maize is risky and/or growing period is not sufficient. Data obtained from experiments carried on various stages of the samples were evaluated and variations determined for tasseling, maturity and number of kernel rows per ear. These samples resist to 4.8 o C at early developing stage and they are relatively early maturing. Genotypes will select from these …

Prediction Forecasting Of The Papers Used In Turkey, Erdoğan Gavcar, Seli̇m Şen, Alper Ayteki̇n

Turkish Journal of Agriculture and Forestry

In this study, rexuirement assumption of 8 different sort of paper used in our country is aimed to be done. Factors that can affect paper consumption are considered as variety of wholesale price indexes in paper products and printing industry, import, export, gross national product and population. As it is known, that requirement predictions are carried out by SEKA, too. But, SEKA take into account only population in the prediction. In calculations, multiple regression and correlation methods are used. As a result, it is shown that besides population other factors could affect the prediction and prediction for the paper-cartoon were …

The Effect Of Different Seed Rates On Yield And Yield Components Of Two Soybean ( Glycine Max. (L.) Merill) Varieties In Kahramanmaras Conditions, H. Ahmet Yilmaz

Turkish Journal of Agriculture and Forestry

This study was carried out in Kahramanmaras ecological condition in 1994 and 1995. In this study soybean cv "P. 9442" and "AP 240" were planted at 50, 60 and 70 cm row spaces, and 3, 5 and 7 cm intrarow seed spaces, and the effects of sowing densities on yield and yield components were investigated. The effects of row spaces on numberof branches per plant and, 100 seed weigth, yield per da, and kernel ratio, were significant in both years , on plant height, branche number per plant and yield per da were significant in both years, on branch number …

The Effects Of Deficit Irrigations On Corn Yield And Water Use Efficiency, Cafer Gençoğlan, Ati̇lla Yazar

Turkish Journal of Agriculture and Forestry

This study was carried out to determine the effects of deficit irrigations on grain yield and water use efficiency (WUE ET ) of corn under Çukurova conditions. Irrigation management treatments were created as 100%, 80 %, 60 %, 40 %, 20 % and 0 % replenishment of water depleted in the 120 cm soil profile from the 100 % replenishment treatment in every ten days. In the experiment, corn was irrigated 6 and 7 times in 1993 and 1994, respectively, and a total of 752 mm to 823 mm or irrigation water were applied to I_100 irrigation treatment, in which …

A Research On Raw Material Used In Forestry Industry In Turkey, Erdoğan Gavcar, Alper Ayteki̇n, Seli̇m Şen

Turkish Journal of Agriculture and Forestry

In this reseacrh, questionnaire form including eight different question was subjected to forestry product enterprises. For this purpose, forestry products industry sector classified into seven groups (timber, chipboard, fiberboard, veneer, plywood, furniture, paper) and in timber, furniture and paper industry, the big-scale enterprises and in the all other enterprises was taken into account. According to the research results, govermental enterprises supply all of required raw material from General Directorate of Forest (OGM), but private sector enterprises only small. Paper production enterprises in private sector are not able to supply raw material from OGM. 48 percent of enterprises supplying raw material …

The Effect Of Ascorbic Acid And Sodium Stearoyl -2- Lactylate On Frozen Dough Stability, Ahmet Fai̇k Koca, Müni̇r Anil

Turkish Journal of Agriculture and Forestry

The present study consitst of two parts of research. In the first part, the effect of varying doses of ascorbic acid (AA-0, 75 and 125 ppm) and sodium stearoyl -2- lactylate (SSL-0, 0.5 %) used in frozen doughs on bread characteristics after 2 months storage period. In the second part the effect AA alone and AA+SSL after three cycles of freeze-thaw on proof time and bread char-acteristics was investigated. The results are presented below statisticaly (p

The Effect Of N Applied At Different Seasons And Doses On Seed Yield And Some Yieldcomponents Of Smooth Bromegrass ( Bromus Inermis Leyss.) And Relationships Among The Characteristics, Yunus Seri̇n, Mustafa Tan, Ali̇ Koç, Ahmet Gökkuş

Turkish Journal of Agriculture and Forestry

This study was conducter to determine the effects of time (autumn and spring) and dose (0, 4, 8 and 12 kg N/da) of nitrogen applications on seed yield and yield components of smooth bromegrass. The study was carried out under irrigated condi-tions in Erzurum, in crop seasons of 1986-1992. According to the mean of five years data nitrogen fertilization is recommended for high seed yield. Application of N as 4 kg/da in autumn+8 kg/da N in spring is effective for high seed yield (40.6 kg/da) and straw yield (959.8 kg/da) under irrigated conditions. The N application increased also generative shoots, …

Obtention Of In Vitro Haploid Plants From In Situ Induced Haploid Embryos In Cucumber(Cucumis Sativus L.), Gülat Çağlar, Kazim Abak

Turkish Journal of Agriculture and Forestry

In this study the obtention of in vitro haploid plants from haploid embryos induced by pollination with irradiated pollen was investigated. The haploid embryos of four cucumber genotypes obtained in different season of the year were cultured on the E20A medium under aseptic condition in 1992-1994. The percentage of embryos that turned into plantlets, duration needed for plant formation, and in situ plantlet development were investigated. Also, the micropropagation possibility with clonning and propagation coefficient of plantlets were determined. The ability of embryos at advanced-stages to form plants was found to be higher (60 % in the first year and …

The Effect Of Different Plant Densities Of Two Peanut Genotypes ( Arachis Hypogea L.) On Yield, Yield Components, Oil And Protein Content, H. Ahmet Yilmaz

Turkish Journal of Agriculture and Forestry

This study was carried out in Kahramanmaras ecological condition in 1994 and 1995. In this study peanut cv "Bocaunba" and peanut line "PI 260690" were planted at 60, 70 and 80 cm row spacies and 15, 20 and 25 cm intrarow seed spaces and the effects of sowing densities on yield and yield components were investigated. The effects of row spaces on pod number per plant, 100 seed weigth, yield per da, and kernel ratio, were significant in both years , on plant height, branche number per plant and oil content were insignificant in first year, while were significant in …

Effect Of Exterior Exposure On The Hadrness Of Varnishes Coating, Ramazan Özen, Abdullah Sönmez

Turkish Journal of Agriculture and Forestry

Wooden materials have been used for decoration and building element both indoors and outdoors. One of the most important problem in wood finishing has been that naturel appearence of wood and varnish coating couldn't be preserved sufficiently against outdoor effects. In this research, cellulosic, synthetic, acid catalyzed and polyurethan varnishes and synthetic opaque white paint was examined by using on the beech (Fagus orientalis L.), pine (Pinus silvestris L.), oak (Quercus petreae L.), castanea (Castanea sativa M.) wood panels. Experiments was conducted in Ankara. Beginning in 1993 a total of five experimental finishes on the four different panels have been …

Effects Of Stand Reduction Applied At Different Plant Growth Stages On The Yieldand Yield Components Of Components Of Sunflower, Abdurrahi̇m Tanju Göksoy, Zeki̇ Meti̇n Turan

Turkish Journal of Agriculture and Forestry

The aim of this tudy was to determined the effects of stand loss applied at different growth stages on the yield and yield components of sunflower. The research was conducted during two-years (1994-1995) under dry conditions in Bursa. In this tudy, plant populations were reduced to 25 % and 50 % compared to check ( 60.000 pants/ha) at the 4-, 8-, 16- leaf and bud stages of sunflower. According to the results, no significant reduictions in seed yield occurred when plant populations were reduced by 25 % (45.000 plants/ha) compared to check. However, it was determined that significant reductions in …

Economic Assessment Of Environmental Pollution Damages Caused By Industry On Agriculture: The Case Of Samsun Fertilizer (Tügsas) And Karadeniz Copper (Kbi) Industries, Harun Tanrivermi̇ş, Zi̇ya Gökalp Mülayi̇m

Turkish Journal of Agriculture and Forestry

In this study, to assess the environmental pollution damages to agriculture the case of TÜGSAS and KBI industries were chosen. For this aim, change-in-productivity, preventive/defensive expenditures and contingent valuation approaches are applied to the selected case for assessing the pollution damage. The result indicates that the value of pollution damages to major agricultural crops in 1994 are estimated as 70.8 billion TL in Tekkeköy region. It has been determined that there is an inverse relationship between the crop losses ratio and the distance from the pollution sources. The minimum value of damages to environment caused by TÜGSAS and KBI is …

The Effect Of Mash Enzymation On Juice Yield And Chemical Compositionof Sour Cherry Juice, Feryal Karadeni̇z, Azi̇z Ekşi̇

Turkish Journal of Agriculture and Forestry

The effect of mash enzymation on juice yield and chemical composition of sourcherry juice was investigated. The increase in juice yield due to mash enzymation was found between 6.25 and 9.0%, in sourcherry juice prepared from Kütahya variety. PH value, titratable acidity, formol number, anthocyanin, total phenolic, glucose, fructose, sucrose, citric acid, malic acid and mineral contents were also determined in sourcherry juices. According to the results, mash enzymation did not show significant effect on the chemical composition of sourcherry juice.

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

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

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 …

Effects Of Different Irrigation Programs On Fruit, Trunk Growth Rates, Quality And Yield Of Grapefruit Trees, Riza Kanber, Harun Köksal, Ati̇lla Yazar, Bülent Özeki̇ci̇, Sermet Önder

Turkish Journal of Agriculture and Forestry

Long-term field experiments were carried out between 1985 and 1988 to determine the effect of different irrigation intervals and pan coefficients on the fruit and trunk growth rates and yield of mature grapefruit trees grown in the Eastern Mediterranean Region of Turkey in a medium-light textured soil. Two different irrigation intervals (I 1 =15 and I 2 =25 days), and pan coefficients (k 1 =0.60 and k 2 =1.00) were used. Higher evapotranspiration values were obtained from the treatments with k 2 coefficient in the two irrigation regimes. The average irrigation water (IR) and evapotranspiration (Et) values were 796 mm …

Reduction By Natural Resin Of Water Uptake In Various Wood Species, Ahmet Ali̇ Var, Erol Öktem

Turkish Journal of Agriculture and Forestry

Straight and clear sapwood specimens of 3x3x1.5 cm were prepared from spruce ( Picea orientalis L.), pine ( Pinus sylvestris L.), beech ( Fagus orientalis L.), and alder ( Alnus glutinosa Geartn. L.). The specimens were impregnated in solution consisting of 10% natural resin and 90% cellulosic thinner, with dipping for periods of 1/3, 3, and 24 hours. Test and control specimens were soaked in distilled water for periods of 1/4, 1, 4, 16, and of 24 hours. Both tests were carried out under room conditions: 20±2°C temperature, 65±5 percent relative humidity and atmospherical pressure. Result showed that there were …

Vertebrate Pests Of Agriculture, Forestry And Public Lands Western Coordinating Committee - 95

Western Region Coordinating Committee for Vertebrate Pests of Agriculture, Forestry, and Public Lands (WCC-95)

To identify and evaluate research and educational needs including damage assessment, integrated management strategies and materials, new target-specific wildlife management practices, studies of relationships between wildlife pests and endangered species, development of new non-lethal approaches to wildlife damage management, and trends in social attitudes affecting the use of technologies. To coordinate cost-sharing efforts between governments, universities, and private companies for gathering data to register products for repelling, mitigating, or controlling wildlife damage. To disseminate information and educational materials to researchers, teachers, stakeholders, and other interested parties.

"Vertebrate Pests Of Agriculture, Forestry And Public Lands" 1999 Annual Meeting

Western Region Coordinating Committee for Vertebrate Pests of Agriculture, Forestry, and Public Lands (WCC-95)

Table of Contents . . i

1999 Officers. . .1

Minutes . . 2

Number and Title of the Regional Project . . 2

Location and Dates of the Meeting. . 2

Participants/Attendees . . 2

Adopted Agenda . .2

Convening of Sessions (Tuesday 16 November). .3

Prairie Dog Forum4

1999 Business Meeting (Wednesday 17 November) . .5

Presentations (Wednesday 17 November) . .10

Continued Presentations, Special Discussions and Individual Updates. . 12

(Thursday 18 November).

Completion of Sessions (Thursday 18 November). . 15

Participants/ Attendees names and addresses. .16

Abstracts . .20

S. Miller Prairie dogs: the case for …

Evaluation Of Three Types Of Forest Openings As Habitat For Wild Turkeys, Thomas A. Nelson

Journal of the Arkansas Academy of Science

No abstract provided.

Investigations On Natural Enemies, Some Biological Characteristics And Population Fluctuations Of Lepidosaphes Ulmi (L.) (Homoptera, Coccidae) Harmful, Tüli̇n Erol, Bülent Yaşar

Turkish Journal of Agriculture and Forestry

This study was carried out from 1991 to 1993, in Van province (Erciş, Edremit, Gevaş), which aimed to find out the population fluctations, some biological characteristics and natural enemies of L. ulmi and P. bituberculatum harmfull to apple trees. Samples were collected periodically every 15 day from 7 trees (Starting variety) in every orchard determined in Gevaş, Edremit and Erciş. All the biological stages, either alive or death, of pests, parasitized individuals and natural enemies were counted on the branches or leaves infested. According to the results obtained, it was determined that L. ulmi and P. bituberculatum overwintered as egg …