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Full-Text Articles in Life Sciences

Effect Of Different Improvement Methods On Yield And Botanical Composition Of Natural Pasture In Salur Village Of Ladik Town, İbrahi̇m Aydin, Ferat Uzun Jan 2000

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 …


Effect Of Some Plant Growth Regulators On Fruit Thinning In Apricots, Mehtap Coşkun, Ahsen Işik Özgüven Jan 2000

Effect Of Some Plant Growth Regulators On Fruit Thinning In Apricots, Mehtap Coşkun, Ahsen Işik Özgüven

Turkish Journal of Agriculture and Forestry

This study was carried out during 1995-1996 in Çukurova. In the experiment, Priana and Belliana were used as comparative cultivars. In addition, 12.5, 25, 50 ppm of NAA and 500, 1000, 2000, 4000 ppm of carbaryl and 50 % of hand thinning were applied about three weeks after full bloom. The results showed that 50 ppm NAA increased both the thinning rate and the fruit size while 1000 and 2000 ppm of carbaryl had a positive effect on the fruit size and weight without having any effect on thinning. Although the treatments gave better results on the fruit size and …


Effects Of Irrigation And Nitrogen Fertilization On Protein Yield Of Common Wheat (Triticum Aestivum L.), Mustafa Güler, Günal Akbay Jan 2000

Effects Of Irrigation And Nitrogen Fertilization On Protein Yield Of Common Wheat (Triticum Aestivum L.), Mustafa Güler, Günal Akbay

Turkish Journal of Agriculture and Forestry

This research was carried out at the Experimental Field of the Department of Agronomy and Kenan Evren Research and Application Farm, Faculty of Agriculture, Ankara University during 1993-1995 in order to determine the effects of different irrigation and nitrogen fertilizer applications on the grain protein yield of common wheat. Bezostaja 1, Gerek 79 and Gün 91 cultivars were used. 0 mm ( S 0 ), 20 mm ( S 1 ) and 40 mm ( S 2 ) irrigation applications and also 4 kg/da ( N 1 ), 6 kg/da ( N 2 ) and 8 kg/da ( N 3 …


An Investigation On The Weed Distribution In Some Agricultural Fields Of Eskişehir And Environs, Cengi̇z Türe, Yavuz Bülent Köse Jan 2000

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 …


Effects Of Different Levels Of Nitrogen On Some Characters Of Datura Collected From Samsun Environs, Enver Esendal, Kudret Kevseroğlu, Seli̇m Aytaç, Gülen Özyazici Jan 2000

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 …


Determination Of Fruit Growth And Development In Walnut, Yaşar Akça Jan 2000

Determination Of Fruit Growth And Development In Walnut, Yaşar Akça

Turkish Journal of Agriculture and Forestry

This study was conducted to determine nut growth and development in Sebin, Bilecik, 32B-18 and 170 B-16 walnut cultivars in 1997-1998. In the study, nut length, nut diameter, nut weight with hull, kernel weight, protein content of shell, kernel and hull, oil content of shell, ash content of shell, ash content of kernel and ash content of hull were determined in the period of fruit growth. The increase in the kernel weight was slower at the beginning of the growth period, while it was rapid between June and August. There was also a rapid development in the nut diameter and …


Determination Of The Mechanization Level For Forestry Operations By Linear Programming, Altay Uğur Gül, Hafiz Hulusi̇ Acar, Özgür Topalak Jan 2000

Determination Of The Mechanization Level For Forestry Operations By Linear Programming, Altay Uğur Gül, Hafiz Hulusi̇ Acar, Özgür Topalak

Turkish Journal of Agriculture and Forestry

Forestry operations take place under various variables and partly uncontrolled factors. The lack of mechanization level and its application cause quantity and quality losses during production. In this study, seven different production methods were used for felling, logging and barking to determine the best of production method for the Kale region. Seven different models were set up and solved by linear programming for this purpose. Each of these solutions were used with different production methods. Model 1 had the lowest production cost ($290779.5) in the other models and production method 6 was chosen in this model. Thus, felling, logging and …


Anatomical And Histological Investigations On The Effects Of Stratification Substrates On Final Take And Quality Of Grafted Vines, Rüstem Cangi̇, Fi̇kret Balta, Adnan Doğan Jan 2000

Anatomical And Histological Investigations On The Effects Of Stratification Substrates On Final Take And Quality Of Grafted Vines, Rüstem Cangi̇, Fi̇kret Balta, Adnan Doğan

Turkish Journal of Agriculture and Forestry

This experiment was carried out to determine the effects of water, sawdust and pumice as stratification substrates on the success of callusing, final take and quality of grafted vines of the Hafizali and Ercis grape cultivars grafted on Kober 5BB rootstock. The anatomical and histological development of the graft union was investigated at 21, 28, 35 and 42 days after grafting in all combinations. As for the results of the anatomical and histological investigations, it was observed that the cambial continuity between graft components in all combinations was mostly established in 21 days, and completed in 28-35 days in water …


Adaptation And Stability Analysis In Some Bread Wheat Genotypes, Şevket Meti̇n Kara Jan 2000

Adaptation And Stability Analysis In Some Bread Wheat Genotypes, Şevket Meti̇n Kara

Turkish Journal of Agriculture and Forestry

Genotype x environment interaction is a challenging issue to plant breeders in improving high-yielding, stable genotypes for variable environments. Several methods of measuring stability of genotypes tested across a range of environments have been proposed. The grain yields of fifteen bread wheat ( Triticum aestivumL.) genotypes grown at eight different locations were used to assess adaptation and stability characteristics of the genotypes and to study associations among these parameters. According to most of the parameters used in the present study, Kiraç 66, Es-kbvd-15 and Ank-92-1 appeared to have a good level of general adaptation to all environments. Mean yield was …


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 …


Impacts Of Turkey's Integration Into The European Union On Agriculture In The Post-Uruguay Round Environment, Cemal Atici, P. Lynn Kennedy Jan 2000

Impacts Of Turkey's Integration Into The European Union On Agriculture In The Post-Uruguay Round Environment, Cemal Atici, P. Lynn Kennedy

Turkish Journal of Agriculture and Forestry

Agricultural trade policies between Turkey and the European Union are modeled using a political preference function (PPF). The PPF is used to estimate the producer and consumer weights perceived by policy makers. The agricultural effects of Turkey's integration into the European Union (EU) and optimal strategies for Turkey and the EU are analyzed Results show that Turkey' s PPF values will be lower, with respect to agriculture, when it joins the EU; however, EU trade liberalization benefits Turkey.


Comparison Of The Swelling And Shrinkage Characteristics Of Corcisan Pine (Pinus Nigra Var. Mantima), İlker Usta, Ari̇f Güray Jan 2000

Comparison Of The Swelling And Shrinkage Characteristics Of Corcisan Pine (Pinus Nigra Var. Mantima), İlker Usta, Ari̇f Güray

Turkish Journal of Agriculture and Forestry

The objective of this study was to determine the volumetric swelling and shrinkage characteristics of air-dried Corsican pine in the longitudinal, tangential and radial directions. For this purpose, the swelling of the wood was caused by the wood being increased in water whilst placed in a swelling jig, and the shrinkage made in an oven by drying. The experimental results showed that although the differences in swelling or shrinking occur in the first 5 hours, both swelling and shrinkage are then negligible in the three directions. The values of swelling-shrinkage showed considerable difference among different directions; for instance, swelling-shrinkage in …


Interactive Effects Of Vernalization, Photoperiod And Light Intensity On Reproductive Development Of Wheat Cultivars, Yasemi̇n Ekmekçi̇, Serpi̇l Terzi̇oğlu Jan 2000

Interactive Effects Of Vernalization, Photoperiod And Light Intensity On Reproductive Development Of Wheat Cultivars, Yasemi̇n Ekmekçi̇, Serpi̇l Terzi̇oğlu

Turkish Journal of Agriculture and Forestry

The interactive effects of vernalization, photoperiod and light intensity on the length of the apex or spike and main shoot, and the diameter of the main shoot of five different wheat ( Triticum aestivumL.) cultivars (Çukurova-86, Atay-85, Lancer, Haymana-79 and Bezostaya-1) having different biological characters were investigated. The research was carried out in four independent experiments, which were the combinations of two different photoperiods (12 and 16 h.d .-1 ) and light intensities (200 µmol m -2 s -1 and 500 µmol m -2 s -1 PFD) with different vernalization periods. At the end of each photoperiod and light intensity …


Dessiccation Using Saturated Salt Solutions And Improvement Germination Rate Of Walnut (Juglans Regia L.) Somatic Embryos, Hati̇ce Dumanoğlu Jan 2000

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 …


The Effects Of Different Grafting Methods Applied By Manual Grafting Units On Grafting Success In Grapevines, Hüseyi̇n Çeli̇k Jan 2000

The Effects Of Different Grafting Methods Applied By Manual Grafting Units On Grafting Success In Grapevines, Hüseyi̇n Çeli̇k

Turkish Journal of Agriculture and Forestry

In this study, Amasya Beyazi and Alphonse Lavallee grape cultivars were grafted on 5 BB (V. berlandieri x V. riparia) rootstock by chip-budding, cleft and omega cut manual grafting units under nursery conditions in 1996 and 1997. Grafts were made on the 15 th of May. One-year-old rooted rootstocks were used in the experiment. The highest graft take was obtained from chip-budding, 87.00% for Amasya Beyazi, and 82.50% for Alphonse Lavallee. The takes of cleft and omega cut grafts were 81.00% and 74.25% for Amasya Beyazi, and 79.75% and 74.50% for Alphonse Lavallee, respectively. The highest rate of grafted grapevines …


The Effect Of Zinc On Alleviation Of Boron Toxicity In Tomato Plants (Lycopersicon Esculentum L.), Aydin Güneş, Mehmet Alpaslan, Yakup Çikili, Hesna Özcan Jan 2000

The Effect Of Zinc On Alleviation Of Boron Toxicity In Tomato Plants (Lycopersicon Esculentum L.), Aydin Güneş, Mehmet Alpaslan, Yakup Çikili, Hesna Özcan

Turkish Journal of Agriculture and Forestry

A greenhouse experiment involving four levels of boron (0, 5, 10 and 20 mg B kg -1) and the levels of zinc (0, 10 and 20 mg Zn kg -1) was conducted in tomato plants ( Lycopersicon esculentum L., cv., 'Lale'). Boron toxicity symptoms occurred at 10 to 20 mg kg -1 B levels. These symptoms were somewhat lower in the plants grown with applied Zn. Fresh and dry weights of the plants clearly decreased with applied B. However Zn treatments partially depressed the inhibitory effect of B on the growth. Increased levels of B increased the concentrations of B …


Characterization Of Some Regosols In The Bursa Plain, Cumhur Aydinalp Jan 2000

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 …


Comparison Of Photosynthetic Water Use Efficiency Of Sweet Sorghum At Canopy And Leaf Scales, Mustafa Ünlü, Pasquale Steduto Jan 2000

Comparison Of Photosynthetic Water Use Efficiency Of Sweet Sorghum At Canopy And Leaf Scales, Mustafa Ünlü, Pasquale Steduto

Turkish Journal of Agriculture and Forestry

Little is known about the response of sweet sorghum to water stress. Therefore, the aim of this study was to characterize sweet sorghum physiological water use efficiency (WUE) under progressing water stress conditions, with emphasis on the canopy scale as compared with the leaf scale. Sweet sorghum ( Sorghum bicolor(L.) Moench) was subjected to two water stress cycles. Energy, water vapor, and CO 2 fluxes were estimated at the canopy scale by means of the Bowen ratio/energy balance/CO 2 gradient method (BREB+), and at the leaf scale with a portable photosynthesis system. Predawn (yb) and noon-time leaf water potential (yn) …


Fermentation Of Glucose And Fructose By Leuconostoc Mesenteroides, Hüseyi̇n Erten Jan 2000

Fermentation Of Glucose And Fructose By Leuconostoc Mesenteroides, Hüseyi̇n Erten

Turkish Journal of Agriculture and Forestry

The preferred order of glucose and fructose uptake by Leuconostoc mesenteroides was investigated in Glucose Fructose Yeast Extract Amino Acid medium with and without the addition of salt under anaerobic conditions. Strains NCIMB 8023 and NCFB 811 preferentially utilised glucose over fructose. A higher biomass was obtained when employing strain NCIMB 8023 compared with strain NCFB 811. The strains studied produced lactate and ethanol as major end-products, with lactate synthesis being greater than ethanol. Small amounts of acetate and mannitol were also formed.


Transfer Of A \Beta-Glucuronidase Reporter Gene To Sugarbeet (Beta Vulgaris L.) Via Microprojectile Bombardment, Sertaç Önde, Melahat Bi̇rsi̇n, Mustafa Yildiz, Cengi̇z Sancak, Murat Özgen Jan 2000

Transfer Of A \Beta-Glucuronidase Reporter Gene To Sugarbeet (Beta Vulgaris L.) Via Microprojectile Bombardment, Sertaç Önde, Melahat Bi̇rsi̇n, Mustafa Yildiz, Cengi̇z Sancak, Murat Özgen

Turkish Journal of Agriculture and Forestry

For the transfer of a \beta -Glucuronidase (GUS) reporter gene to sugarbeet (Beta vulgaris L.) callus and leaf explants by microprojectile bombardment, various rupture disk pressures and sample plate distances were tested. By coating the pBI221.23 DNA construct over the gold particles, bombardments were carried out by the DuPont PDS-1000/He system and the results clearly indicated the superiority of leaf explants over the callus structures as targets. The sample plate distances affected the distribution pattern of the particles and the cells expressing the GUS reporter gene were noted to be aggregated in short distances whereas longer distance shots yielded better …


The Effect Of Chemical Applications On Cuticular And Epidermal Properties Of Some Sweet Cherry Cultivars With Respect To Fruit Cracking Susceptibility, Leyla Demi̇rsoy, Şükri̇ye Bi̇lgener Jan 2000

The Effect Of Chemical Applications On Cuticular And Epidermal Properties Of Some Sweet Cherry Cultivars With Respect To Fruit Cracking Susceptibility, Leyla Demi̇rsoy, Şükri̇ye Bi̇lgener

Turkish Journal of Agriculture and Forestry

This study was carried out in Amasya during 1994 and 1995. The aim of this study was to determine the effect of various chemical applications before harvest on epidermal characteristics related with fruit cracking in some sweet cherry cultivars (0900 Ziraat, Lambert and Van). The trees of the cherry cultivars were sprayed with GA 3 (20 ppm), NAA (1 ppm), GA 3 +NAA (20+1 ppm), NAA+Ca(OH) 2 (1 ppm+0.7%), GA 3 +Ca(OH) 2 (20 ppm+0.7%) and GA 3 +NAA+Ca(OH) 2 (20 ppm+1ppm+0.7%) 30-35 days before harvest. In addition, there were multiple applications of Ca(OH) 2 (0.7%) at ten day intervals …


The Effects Of Vesicular-Arbuscular Mycorrhizae On The Plant Growth And Nutrient Uptake Of Cucumber, Si̇bel Çiğşar, Nebahat Sari, İbrahi̇m Ortaş Jan 2000

The Effects Of Vesicular-Arbuscular Mycorrhizae On The Plant Growth And Nutrient Uptake Of Cucumber, Si̇bel Çiğşar, Nebahat Sari, İbrahi̇m Ortaş

Turkish Journal of Agriculture and Forestry

This study was conducted to investigate the effect of vesicular-arbuscular (VA) mycorrhizae on plant growth of cucumber. Yayla F 1 seeds were sown in sterile and non-sterile growing medium (organic manure:soil:mix of sand; v:v:v 1:1:1). The mix inoculum of Glomus mosseaand Glomus fasciculatumspores (10 g/plant) was placed 5 cm below the cucumber seed before sowing. In order to investigate the effects of VA mycorrhizae on plant growth, plant height, diameter, number of nodes were measured every 15 days. Also once a month biomass, P, Zn and Mn content of dry matter biomass and mycorrhizal infection were also determined. The results …


Relationship Between Leaf Area Index At Anthesis And Yield In Wheat Under Çukurova Conditions, Müjde Koç, Celaleddi̇n Barutçular Jan 2000

Relationship Between Leaf Area Index At Anthesis And Yield In Wheat Under Çukurova Conditions, Müjde Koç, Celaleddi̇n Barutçular

Turkish Journal of Agriculture and Forestry

Wheat yields are closely related to leaf area index (LAI) at anthesis. The optimum leaf area index differs according to genotype and location conditions. Three field experiments were conducted to determine the pattern of the relationship between LAI at anthesis and yield in Çukurova , a region with an acclerated ear and grain growth. Different genotypes, seeding density and nitrogen doses were used to create a range of LAI. Biological yield (BY) and grain yield (GY) increased quadratically in response to LAI values, with greater responses for BY (R 2 =0.46**) than for GY (R 2 =0.35**). As LAI increased …


The Effects Of Some Plant Growing Regulators On The Rooting Of Capers (Capparis Spinosal), Durmuş Ali̇ Söyler, Neşet Arslan Jan 2000

The Effects Of Some Plant Growing Regulators On The Rooting Of Capers (Capparis Spinosal), Durmuş Ali̇ Söyler, Neşet Arslan

Turkish Journal of Agriculture and Forestry

The study was carried out in the greenhouse of the Department of Field Crops, Faculty of Agriculture, University of Ankara, in 1994. The experiment was conducted in split-plots design in randomised plots with four replications. Cuttings were treated with various concentrations of IBA; IAA and NAA at different periods to induce rooting. The best rootings, 28 % and 29 %, were achieved by treatment of the cuttings with 500 ppm IAA in April and 250 ppm IBA in May for 12h.


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 Jan 2000

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 …


Effects Of Va-Mycorrhiza On Growth And Phosphorus, Zinc, Iron, Copper And Manganese Concentrations Of Maize Grown In Acid And Alkaline Soils, Hesna Özcan, Süleyman Taban Jan 2000

Effects Of Va-Mycorrhiza On Growth And Phosphorus, Zinc, Iron, Copper And Manganese Concentrations Of Maize Grown In Acid And Alkaline Soils, Hesna Özcan, Süleyman Taban

Turkish Journal of Agriculture and Forestry

The aim of this study was to determine the effects of VA Mycorrhiza on P, Zn, Fe, Cu and Mn uptake by maize grown in alkaline and acid soils. For this purpose, maize was grown in sterilized alkaline and acid soils under greenhouse conditions by applying 100 \mug N g -1 (as urea) and 40 \mug K g -1 (as K 2 SO 4 ) as solution to the soils. 40 \mug P g -1 (as TSP) was added to the pots that P was applied to, and a mixture of Glomus etunicatumand Glomus intraradiceswas inoculated to the pots that …


Determination Of The Viability And Production Of Pollen And Suitable Pollen Germination Medium In Some Blackberry ( Rubus Fruticosusl.) Cultivars, Nurgül Türemi̇ş, Kubi̇lay Deri̇n Jan 2000

Determination Of The Viability And Production Of Pollen And Suitable Pollen Germination Medium In Some Blackberry ( Rubus Fruticosusl.) Cultivars, Nurgül Türemi̇ş, Kubi̇lay Deri̇n

Turkish Journal of Agriculture and Forestry

This research was conducted in the Small Fruits Implementation Area belonging to Çukurova University Agricultural Faculty Horticultural Department during the 1999 vegetation period. Nessy, Chester Thornless, Oregon Thornless and Jumbo blackberry cvs. were used. Pollen viability levels in these cultivars were determined by using TTC and FDA staining tests. In addition, the effects of 50, 100, 200 and 400 ppm concentrations of Ca(NO 3 ) 2 , MgSO 4 , KNO 3 and H 3 BO 3 on pollen germination were investigated. Pollen viability levels varied from 79.75 % (Oregon Thornless) to 91.94 % (Chester Thornless) in TTC, and 82.17 …


Determination Of Interrelationships Among Important Nut Quality Characteristics On Palaz And Sivri Hazelnut Cultivars By Path Analysis, S. Zeki̇ Bostan, Ali̇ İslam Jan 1999

Determination Of Interrelationships Among Important Nut Quality Characteristics On Palaz And Sivri Hazelnut Cultivars By Path Analysis, S. Zeki̇ Bostan, Ali̇ İslam

Turkish Journal of Agriculture and Forestry

This study was carried out on Palaz and Sivri hazelnut cultivars grown in central Ordu and the surrounding area. The interrelationships among husk length, nut length, nut width, nut height nut weight, shell thickness, kernel length, kernel width, kernel height, , kernel weight and percent kernel were determined using path analysis. From the path analysis, it was found that percent kernel in Palaz cultivar was affected by shell thickness (r=-0.419**) and husk length (r=-0.350**) according to nut weight; in Sivri cultivar, it was affected by nut length according to nut weight (r=-0.351**) and by kernel width according to kernel weight …


Effect Of Different Water Amounts And Discharge Rates On Moisture Distribution In Perlite And Pumice By Trickle Irrigation, Üstün Şahi̇n, Ömer Anapali, Abdurrahman Hanay Jan 1999

Effect Of Different Water Amounts And Discharge Rates On Moisture Distribution In Perlite And Pumice By Trickle Irrigation, Üstün Şahi̇n, Ömer Anapali, Abdurrahman Hanay

Turkish Journal of Agriculture and Forestry

This study was undertaken to determine the effect of different particle size and discharge rates and total irrigation water on moisture distribution in perlite and pumice. Four different discharge rates (2 L/h, 4 L/h, 6 L/h, 8 L/h) with 5 and 10 L total irrigation water were applied. Drainage type cylinders with 80x80 cm in size were used in this experiment. After each water application, vertical and horizontal moisture distributions were investigated. Results showed that discharge rate, applied irrigation water and particle size used had significant effect on wetting front. Vertical and horizontal water movement were greater in pumice than …


The Effect Of Cuting Frequency And Height On The Hay Yield And Some Chemical Characteristics Of Hay In Diploid And Tetraploid Perennial Rye (Secale Montanum Guss.), İlknur Akgün, Meti̇n Tosun, Sevi̇m Sağsöz, Mahmut Taşpinar Jan 1999

The Effect Of Cuting Frequency And Height On The Hay Yield And Some Chemical Characteristics Of Hay In Diploid And Tetraploid Perennial Rye (Secale Montanum Guss.), İlknur Akgün, Meti̇n Tosun, Sevi̇m Sağsöz, Mahmut Taşpinar

Turkish Journal of Agriculture and Forestry

This study was carried out under greenhouse conditions from March 1995 to August 1996. The effects of cutting frequency and height on hay yield and quality were investigated. In this research, 2 ploidy levels (diploid and tetraploid), 3 cutting frequencies (4, 6 and 8 week intervals) and 3 cutting heights (0, 5 and 10 cm) were investigated and analyzed in three factorial completely randomized design. In diploids, tiller numbers per plant were higher than that of tetraploids, whereas green and hay yields, the percentage and yield of crude protein were lower than that of tetraploids. There were no significant differences …