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2011

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Articles 331 - 360 of 393

Full-Text Articles in Agriculture

Comparison Of Open Field And Protected Cultivation Of Five Early Table Grape Cultivars Under Mediterranean Conditions, Önder Kami̇loğlu, Ati̇la Ayteki̇n Polat, Coşkun Durgaç Jan 2011

Comparison Of Open Field And Protected Cultivation Of Five Early Table Grape Cultivars Under Mediterranean Conditions, Önder Kami̇loğlu, Ati̇la Ayteki̇n Polat, Coşkun Durgaç

Turkish Journal of Agriculture and Forestry

The production of grapes for early table consumption is becoming more popular in the Mediterranean region of Turkey. In this study, the cultivation of 5 early table grape cultivars ('Ergin çekirdeksizi', 'Uslu', 'Yalova incisi', 'Cardinal', and 'Perlette') in the open field and under protected cultivation were compared in 2004-2005 and 2005-2006 seasons. For the protected culture, the grapevines were covered on 23 February 2004 and 24 February 2005. The phenologic observations, pomologic analyses, yield variables, and primary shoot growth were determined. When compared to open field production, protected production led to 15-18 days earliness. 'Uslu' was the earliest cultivar in …

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Biological Control Of Chestnut Canker, Caused By Cryphonectria Parasitica, By Antagonistic Organisms And Hypovirulent Isolates, Seçi̇l Akilli, Yakup Zekai̇ Katircioğlu, Sali̇h Maden Jan 2011

Biological Control Of Chestnut Canker, Caused By Cryphonectria Parasitica, By Antagonistic Organisms And Hypovirulent Isolates, Seçi̇l Akilli, Yakup Zekai̇ Katircioğlu, Sali̇h Maden

Turkish Journal of Agriculture and Forestry

Biological control of chestnut blight was investigated by using 3 hypovirulent isolates of Cryphonectria parasitica, 5 Trichoderma sp., 4 Penicillium sp., and 4 Bacillus sp. isolates. Hypovirulent isolates and antagonistic organisms were obtained from samples collected from the Black Sea region of Turkey, in 2008 and 2009. Effectiveness of the hypovirulent isolates and antagonistic microorganisms was tested on 3-year-old chestnut saplings. In the tests, bark disks of 6 mm were removed from the stem bases and culture disks of the virulent isolate of C. parasitica were first placed into the hole and then the hypovirulent isolate or the antagonistic fungi. …

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Molecular Cloning And Functional Characterization Of A Na+/H+ Antiporter Gene From Halophyte Spartina Anglica, Tao Lan, Yuanlin Duan, Bin Wang, Yuanchang Zhou, Weiren Wu Jan 2011

Molecular Cloning And Functional Characterization Of A Na+/H+ Antiporter Gene From Halophyte Spartina Anglica, Tao Lan, Yuanlin Duan, Bin Wang, Yuanchang Zhou, Weiren Wu

Turkish Journal of Agriculture and Forestry

Na^+/H^+ antiporters have been suggested to play important roles in salt tolerance in plants. English cordgrass (Spartina anglica) is a gramineous halophyte with very strong salt tolerance. It possesses salt glands in its stems and leaves, through which excess salt can be excreted. In this study, a vacuolar Na^+/H^+ antiporter homologous gene (temporarily named SaNHX1) was isolated from Spartina anglica by RT-PCR and rapid amplification of cDNA ends (RACE). Southern blot analysis suggested that there might be 2 or 3 copies of the vacuolar Na^+/H^+ antiporter genes in the English cordgrass genome. Northern blot analysis showed that the expression of …

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Soil Formation Overlying Volcanic Materials At Mount Erenler, Konya, Turkey, Sidika Özcan, Hasan Hüseyi̇n Özayteki̇n Jan 2011

Soil Formation Overlying Volcanic Materials At Mount Erenler, Konya, Turkey, Sidika Özcan, Hasan Hüseyi̇n Özayteki̇n

Turkish Journal of Agriculture and Forestry

Studies of soils developed on volcanic materials are insufficient in Turkey in light of the wide distribution of these soils. The objectives of the present work were to assess the influence of climate and other soil-forming factors on physical, chemical, and mineralogical characteristics and pedological processes in the soil genesis and soil classification of 4 volcanic soil profiles derived from andesitic parent material, and to determine whether they meet the requirements for classification as Andisols. Collected from a semiarid climate in Konya, Turkey, these soils are characterized as medium- and fine-textured with low organic matter content, low cation exchange capacity, …

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Mapping Paddy Rice Yield In Zhejiang Province Using Modis Spectral Index, Qian Cheng, Xiuju Wu Jan 2011

Mapping Paddy Rice Yield In Zhejiang Province Using Modis Spectral Index, Qian Cheng, Xiuju Wu

Turkish Journal of Agriculture and Forestry

The first 19 bands of a moderate-resolution imaging spectrometer (MODIS), covering the visible to shortwave infrared spectral wavelength, were simulated by ground-level reflectance spectra. All spectral indices similar to the normalized difference vegetation index (NDVI) and ratio vegetation index (RVI) formed by every 2 bands were calculated to obtain their determination coefficients, with theoretical and real yield. Results revealed that the combinative near-infrared (NIR) index (band 2 and band 19, symbol b2 and b19, and other similar ones) and the (b16, b19) of MODIS were strongly correlated with rice yield, especially the correlative coefficient that exceeded significant levels in the …

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Control Of Trialeurodes Vaporariorum (Westwood) Adults On Glasshouse-Grown Cucumbers In Four Different Growth Substrates: An Efficacy Comparison Of Foliar Application Of Steinernema Feltiae (Filipjev) And Spraying With Thiamethoxamn, Ziga Laznik, Dragan Znidarcic, Stanislav Trdan Jan 2011

Control Of Trialeurodes Vaporariorum (Westwood) Adults On Glasshouse-Grown Cucumbers In Four Different Growth Substrates: An Efficacy Comparison Of Foliar Application Of Steinernema Feltiae (Filipjev) And Spraying With Thiamethoxamn, Ziga Laznik, Dragan Znidarcic, Stanislav Trdan

Turkish Journal of Agriculture and Forestry

In a glasshouse experiment, the effectiveness of the entomopathogenic nematode (EPN) Steinernema feltiae (Filipjev) (Rhabditida: Steinernematidae) was compared with thiamethoxam for the control of adults of the greenhouse whitefly (GWF), Trialeurodes vaporariorum (Westwood) (Homoptera: Aleyrodidae), on slicer cucumbers. In a period from mid June to the end of August (2007 and 2008), cucumbers were grown in 4 different growth substrates: expanded perlite, expanded vermiculite, light expanded clay, and peat. A suspension of the nematode (2500 infective juveniles mL^{-1}) was applied to cucumbers 5 times in 2007 and twice in 2008, whilst an insecticide thiametoxam at the recommended dose (0.7 g …

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Moving Micronutrients From The Soil To The Seeds: Genes And Physiological Processes From A Biofortification Perspective, Brian M. Waters, Renuka P. Sankaran Jan 2011

Moving Micronutrients From The Soil To The Seeds: Genes And Physiological Processes From A Biofortification Perspective, Brian M. Waters, Renuka P. Sankaran

Department of Agronomy and Horticulture: Faculty Publications

The micronutrients iron (Fe), zinc (Zn), and copper (Cu) are essential for plants and the humans and animals that consume plants. Increasing the micronutrient density of staple crops, or biofortification, will greatly improve human nutrition on a global scale. This review discusses the processes and genes needed to translocate micronutrients through the plant to the developing seeds, and potential strategies for developing biofortified crops.

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Moving Magnesium In Plant Cells, Brian M. Waters Jan 2011

Moving Magnesium In Plant Cells, Brian M. Waters

Department of Agronomy and Horticulture: Faculty Publications

Magnesium (Mg) is among the most abundant mineral elements in plants, yet the knowledge of which genes control its accumulation in specific tissues and organelles lags behind that of many other mineral elements. Only in recent years has identification of important molecular players begun to take shape. In this issue of New Phytologist, Conn et al. (pp. 583–594) shed additional light on two Mg transporters that play important roles in accumulation of Mg in leaf cell vacuoles. Using subcellular-level ion measurements on leaves, gene expression measurements after single-cell sampling, a genetic approach, and clever use of calcium (Ca) and …

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The Role Of Transition Metal Homeostasis In Plant Seed Development, Elsbeth L. Walker, Brian M. Waters Jan 2011

The Role Of Transition Metal Homeostasis In Plant Seed Development, Elsbeth L. Walker, Brian M. Waters

Department of Agronomy and Horticulture: Faculty Publications

Copyright © 2011 Elsevier Ltd. Used by permission.

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Estimation Of Surface Soil Organic Matter Using A Ground-Based Active Sensor And Aerial Imagery, D. F. Roberts, V. I. Adamchuk, J. F. Shanahan, R. B. Ferguson, J. S. Schepers Jan 2011

Estimation Of Surface Soil Organic Matter Using A Ground-Based Active Sensor And Aerial Imagery, D. F. Roberts, V. I. Adamchuk, J. F. Shanahan, R. B. Ferguson, J. S. Schepers

Department of Agronomy and Horticulture: Faculty Publications

Active canopy sensors are currently being studied as a tool to assess crop N status and direct in-season N applications. The objective of this study was to use a variety of strategies to evaluate the capability of an active sensor and a wide-band aerial image to estimate surface soil organic matter (OM). Grid soil samples, active sensor reflectance and bare soil aerial images were obtained from six fields in central Nebraska before the 2007 and 2008 growing seasons. Six different strategies to predict OM were developed and tested by dividing samples randomly into calibration and validation datasets. Strategies included uniform, …

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Switchgrass Contains Two Cinnamyl Alcohol Dehydrogenases Involved In Lignin Formation, Aaron J. Saathoff, Christian M. Tobias, Scott E. Sattler, Eric J. Haas, Paul Twigg, Gautam Sarath Jan 2011

Switchgrass Contains Two Cinnamyl Alcohol Dehydrogenases Involved In Lignin Formation, Aaron J. Saathoff, Christian M. Tobias, Scott E. Sattler, Eric J. Haas, Paul Twigg, Gautam Sarath

Department of Agronomy and Horticulture: Faculty Publications

Lignin content of switchgrass (Panicum virgatum L.), a bioenergy species, is a critical determinant of biomass quality since it can negatively impact conversion of biomass into liquid fuels via biochemical platforms. Cinnamyl alcohol dehydrogenase (CAD) is a key enzyme in lignin biosynthesis. Here, we have shown that cv. Kanlow switchgrass contains at least two closely related CAD genes (PviCAD1 and PviCAD2) that code for proteins containing highly conserved domains and residues that identify them as bona fide CADs. Both recombinant proteins displayed substrate kinetics consistent with their presumed role in cell wall lignification. Proteomic and immunoblotting detected …

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Small Mammal Populations In Switchgrass Stands Managed For Biomass Production Compared To Hay And Corn Fields In Kentucky, Laura Mary Jane Schwer Jan 2011

Small Mammal Populations In Switchgrass Stands Managed For Biomass Production Compared To Hay And Corn Fields In Kentucky, Laura Mary Jane Schwer

University of Kentucky Master's Theses

Switchgrass (Panicum virgatum), a native warm-season grass, has been investigated as a renewable energy crop that may provide viable wildlife habitat. This study investigated small mammal populations in switchgrass, hay, and corn to assess the relative habitat quality. Four, three-night trapping sessions were conducted at four locations in Kentucky using Sherman livetraps. Trapping occurred in spring (before first hay harvest), summer, fall (before switchgrass and corn harvest), and winter (post-harvest). Relative abundance of small mammals, calculated using a capture per unit effort index (per 100 trapnights), and mean taxonomic richness were used to compare habitats. Switchgrass had a …

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The Effect Of Client Self-Disclosure On The Physiological Arousal Of The Therapist, Kristyn M. Blackburn Jan 2011

The Effect Of Client Self-Disclosure On The Physiological Arousal Of The Therapist, Kristyn M. Blackburn

University of Kentucky Master's Theses

This quantitative study investigated the effect of client self-disclosure on the physiological arousal of the therapist and subsequent ratings of the therapeutic alliance, session smoothness, and session depth. Three therapists and 10 clients participated in a 40-minute videotaped therapy session while being attached to sensors that measured heart rate and skin conductance. The participants completed self-report questionnaires designed to assess the therapeutic alliance and session smoothness and depth immediately following the therapy session. The videotaped therapy sessions were later transcribed and coded by two independent coders for the occurrence of client self-disclosure. Correlation analyses were utilized to determine whether or …

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Influence Of Fan Operation On Fan Assessment Numeration System (Fans) Test Results, Gabriela Munhoz Morello Jan 2011

Influence Of Fan Operation On Fan Assessment Numeration System (Fans) Test Results, Gabriela Munhoz Morello

University of Kentucky Master's Theses

The use of velocity traverses to measure in-situ air flow rate of ventilation fans can be subject to significant errors. The Fan Assessment Numeration System (FANS) was developed by the USD-ARS Southern Poultry Research Laboratory and refined at the University of Kentucky to measure air flow of fans in-situ. The procedures for using the FANS unit to test fans in-situ are not completely standardized. This study evaluated the effect of operating fan positions relative to the FANS unit for ten 1.22 m diameter fans in two types of poultry barns, with fans placed immediately next to each other and …

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Registration Of Seven Winter Wheat Germplasm Lines Carrying The Wsm1 Gene For Wheat Streak Mosaic Virus Resistance, Jasdeep S. Mutti, P. Stephen Baenziger, Robert A. Graybosch, Roy French, Kulvinder S. Gill Jan 2011

Registration Of Seven Winter Wheat Germplasm Lines Carrying The Wsm1 Gene For Wheat Streak Mosaic Virus Resistance, Jasdeep S. Mutti, P. Stephen Baenziger, Robert A. Graybosch, Roy French, Kulvinder S. Gill

Department of Agronomy and Horticulture: Faculty Publications

Seven winter wheat (Triticum aestivum L.) germplasm lines carrying the Wsm1 gene conferring resistance to Wheat streak mosaic virus (WSMV)—Alliance-Wsm1 (Reg. No. GP-858, PI 653710), Arrowsmith-Wsm1 (Reg. No. GP-859, PI 653711), Goodstreak-Wsm1 (Reg. No. GP-860, PI 653712), Harry-Wsm1 (Reg. No. GP-861, PI 653713), Millennium-Wsm1 (Reg. No. GP-862, PI 653714), Wahoo-Wsm1 (Reg. No. GP-863, PI 653715), and Wesley-Wsm1 (Reg. No. GP-864, PI 653716)—were codeveloped by Washington State University, Pullman, WA; the University of Nebraska, Lincoln, NE; and the USDA-ARS. These seven different winter wheat cultivars were selected to provide more sources of effective …

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2011 Weed Science Research Report – Tan Section, Ndsu Weed Science, Dept. Of Plant Sciences Jan 2011

2011 Weed Science Research Report – Tan Section, Ndsu Weed Science, Dept. Of Plant Sciences

Plant Sciences Weed Science Reports

The Weed Science team at North Dakota State University conduct field research in the State of North Dakota. This specific document reports on field research conducted in 2011 It includes work on adjuvants in North Dakota.

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Genetic Analysis Of Preharvest Sprouting Tolerance In Bread Wheat (Triticum Aestivum L. Emend. Thell.), Cemal Yücel, Faheem Shehzad Baloch, Rüştü Hati̇poğlu, Hakan Özkan Jan 2011

Genetic Analysis Of Preharvest Sprouting Tolerance In Bread Wheat (Triticum Aestivum L. Emend. Thell.), Cemal Yücel, Faheem Shehzad Baloch, Rüştü Hati̇poğlu, Hakan Özkan

Turkish Journal of Agriculture and Forestry

Rains during grain ripening in wheat (Triticum aestivum L.) can cause preharvest sprouting (PHS), which drastically affects the grain yield and the baking quality of flour. In the present study, to screen 7 cultivars and 4 lines of spring bread wheat for PHS, germination tests were conducted with seeds obtained from wet spikes harvested immediately after natural rainfall. Germination tests were carried out as 3 different treatments: 1) seeds immediately germinated after hand-threshing on sampling day (T_1), 2) seeds germinated 1 week later after hand-threshing (T_2), and 3) 10 intact spikes kept on paper under laboratory conditions at room temperature, …

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Effect Of Exogenously Applied Spermidine On Growth And Physiology Of Citrus Rootstock Troyer Citrange Under Saline Conditions, Muhammad Akbar Anjum Jan 2011

Effect Of Exogenously Applied Spermidine On Growth And Physiology Of Citrus Rootstock Troyer Citrange Under Saline Conditions, Muhammad Akbar Anjum

Turkish Journal of Agriculture and Forestry

The aim of this study was to assess the effects of spermidine (Spd) on ameliorating adverse effects of salinity in Troyer citrange seedlings. For this purpose, 6-month-old, uniform-sized seedlings of Troyer citrange were transplanted to plastic containers containing Hoagland nutrient solution. Addition of 75 mM NaCl into the nutrient solution reduced the plant growth, leaf chlorophyll content, chlorophyll fluorescence yield (Fv/Fm), net photosynthetic rate, respiration rate, and total Spd, N, and Ca^{2+} + Mg^{2+} contents of the leaves. It increased the leaf proline, total putrescine (Put), total spermine (Spm), Na^+, and Cl^- contents of the leaves. Addition of Spd (0.1 …

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Sensitivity Of Cercospora Beticola Populations In Turkey To Flutriafol, Mancozeb, And Fentin Acetate, Aynur Tümbek, Pinar Özeren, Riza Kaya, Yakup Zekai̇ Katircioğlu, Sali̇h Maden Jan 2011

Sensitivity Of Cercospora Beticola Populations In Turkey To Flutriafol, Mancozeb, And Fentin Acetate, Aynur Tümbek, Pinar Özeren, Riza Kaya, Yakup Zekai̇ Katircioğlu, Sali̇h Maden

Turkish Journal of Agriculture and Forestry

The sensitivity of sugar beet leaf spot disease caused by Cercospora beticola to fungicides used in Turkey was determined using a mycelial growth assay in petri dishes with 100 fungal isolates. The isolates were obtained from samples collected from 6 sugar beet production areas in 2005 and 2006. Flutriafol, mancozeb, and fentin acetate were added to Aspergillus complete medium (ACM) at the rates of 0.0, 0.05, 0.1, 0.5, 1.0, 5.0, and 10.0 µg mL^{-1}, and then mycelial growth was measured. ED_{50} values of flutriafol for all the isolates from the sugar beet production areas ranged from 0.04 to >10.0 µg …

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Anatomical, Physical, And Mechanical Properties Of Eldar Pine (Pinus Eldarica Medw.) Grown In The Kelardasht Region, Majid Kiaei Jan 2011

Anatomical, Physical, And Mechanical Properties Of Eldar Pine (Pinus Eldarica Medw.) Grown In The Kelardasht Region, Majid Kiaei

Turkish Journal of Agriculture and Forestry

The aim of this study was to determine some of the anatomical, physical, and mechanical properties of 35-year-old Pinus eldarica Medw. wood. For this purpose, 3 normal pine trees were randomly cut down from the Garagpas-Kelardasht site located in the northern part of Iran. Disks and logs of wood were cut at breast height. The testing samples were prepared along the radial axis from the pith to the bark to determine anatomical and physical properties such as annual ring width, tracheid length, oven-dry density, basic density, and volume shrinkage, and mature wood was used to measure mechanical strength characteristics such …

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The Relationships Of Some Traits In Turkish Winter Bread Wheat Landraces, Mevlüt Akçura Jan 2011

The Relationships Of Some Traits In Turkish Winter Bread Wheat Landraces, Mevlüt Akçura

Turkish Journal of Agriculture and Forestry

In this study, 42 bread wheat pure lines obtained from 340 landraces, collected from 35 provinces of 7 regions in Turkey, and 7 modern bread wheat cultivars were evaluated under rainfed conditions in Konya, in 2005-2006 and 2006-2007 growing seasons. Experiments were conducted in a 7 × 7 lattice design in 3 replicates. Both genotype-traits (GT) biplot analysis and path analysis were used to investigate the relationships between grain yield and 12 traits. Applying both types of analyses to the multiple traits data revealed that GT biplot graphically displayed the interrelationships among traits (breeding objectives), identified traits that are positively …

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Determination Of The Effect Of Biodiesel Use On Power Take-Off Performance Characteristics Of An Agricultural Tractor In A Test Laboratory, Ali̇ Aybek, Emrullah Başer, Selçuk Arslan, Mustafa Üçgül Jan 2011

Determination Of The Effect Of Biodiesel Use On Power Take-Off Performance Characteristics Of An Agricultural Tractor In A Test Laboratory, Ali̇ Aybek, Emrullah Başer, Selçuk Arslan, Mustafa Üçgül

Turkish Journal of Agriculture and Forestry

Tractor performance tests conducted under laboratory test conditions are important because these tests determine the performance characteristics used to compare strengths and weaknesses of tractors. The objective of this study was to determine the effect of diesel fuel (B0) and 3 different biodiesel blends made of canola oil (B10, B20, B30) on tractor power take-off (PTO) performance characteristics. Performance characteristics studied were PTO power, engine torque, engine fuel consumption, and specific fuel consumption on an agricultural tractor (Massey Ferguson 3056 2WD) at the test laboratory of the Directorate of Agricultural Machinery Test Center (TAMTEST), Ministry of Agriculture and Rural Affairs, …

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Effects Of Nitrogen And Harvesting Time On Chemical Composition Of Biomass Of Sudan Grass, Fodder Sorghum, And Their Hybrid, Dorde Glamoclija, Snezana Jankovic, Sveto Rakic, Radojka Maletic, Jela Ikanovic, Zeljko Lakic Jan 2011

Effects Of Nitrogen And Harvesting Time On Chemical Composition Of Biomass Of Sudan Grass, Fodder Sorghum, And Their Hybrid, Dorde Glamoclija, Snezana Jankovic, Sveto Rakic, Radojka Maletic, Jela Ikanovic, Zeljko Lakic

Turkish Journal of Agriculture and Forestry

The subject of this study is 2-year variability research (2007 and 2008) of the chemical composition of naturally dried biomass samples of 3 different sorghum species, which are widely used in the southeast Balkans. Samples of Sudan grass Zora, fodder sorghum NS-Dzin, and their hybrid Siloking were examined based on the quantity of used nitrogen and the harvest time. Plants were grown in the experimental field of Radmilovac (property of the Faculty of Agriculture in Belgrade) in a randomized block, split-split plot design with 3 replications for 2 years. Naturally dried biomass with the highest amount of total proteins was …

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The Investigation Of Antimicrobial Activity Of Thyme And Oregano Essential Oils, Bülent Çeti̇n, Songül Çakmakçi, Ramazan Çakmakçi Jan 2011

The Investigation Of Antimicrobial Activity Of Thyme And Oregano Essential Oils, Bülent Çeti̇n, Songül Çakmakçi, Ramazan Çakmakçi

Turkish Journal of Agriculture and Forestry

The aim of this study is to investigate in-vitro antimicrobial effects of the essential oils from oregano (Origanum acutidens and Origanum rotundifolium) and thyme (Thymus sipyleus subsp. sipyleus var. rosulans). The chemical composition and antimicrobial attributes of the essential oils obtained from the aerial parts of the plants, of which there were 3 Lamiaceae species, have been studied. A total of 43 microorganisms, including 26 bacteria, 14 fungi, and 3 yeasts species, have been studied by using disc-diffusion (DD) and minimal inhibition concentration (MIC) methods. Mean inhibition zones and MIC values of bacterial strains varied from 8 and 72 mm …

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Utilization Of Boron Compounds As Synergists With Ammonium Polyphosphate For Flame Retardant Wood-Polymer Composites, Ramazan Kurt, Fati̇h Mengeloğlu Jan 2011

Utilization Of Boron Compounds As Synergists With Ammonium Polyphosphate For Flame Retardant Wood-Polymer Composites, Ramazan Kurt, Fati̇h Mengeloğlu

Turkish Journal of Agriculture and Forestry

The investigation consisted of utilizing boron compounds (BCs) as a synergist with ammonium polyphosphate (APP) in manufacturing flame retardant wood-polymer composites (WPCs). Flame retardants (FRs) at various ratios (APP, boric acid (BA), borax (BX), zinc borate and BA/BX mixtures) were used to determine the physical, mechanical, and burning rate properties of WPCs manufactured from wood flour, polypropylene, and maleic anhydride polypropylene. The results showed that the addition of FRs reduced all mechanical properties of WPCs except for impact strength. However, this reduction was lower for samples having BCs in FRs formulation. Similar burning rate results were achieved in WPCs having …

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Evaluation Of Some Wood Quality Measures Of Eight-Year-Old Melia Azedarach Trees, Loutfy Ibrahim El-Juhany Jan 2011

Evaluation Of Some Wood Quality Measures Of Eight-Year-Old Melia Azedarach Trees, Loutfy Ibrahim El-Juhany

Turkish Journal of Agriculture and Forestry

This study investigated the wood quality of 8-year-old Melia azedarach trees grown in Saudi Arabia. The wood quality of the trees was studied in terms of fibre length, specific gravity, and heartwood/sapwood area. The sampled trees were felled, their stem height and diameter were measured, and discs were cut from the stem base and breast height of each tree. Fibre length and specific gravity at breast height were determined, as well as the area and proportion of heartwood and sapwood at both base- and breast-height cross sections. The results showed that the fibre length of Melia azedarach wood varied between …

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Quality Parameters And Total Phenolic Content In Tomato Fruits Regarding Cultivar And Microclimatic Conditions, Nina Kacjan Marsic, Lea Gasperlin, Veronika Abram, Maja Budic, Rajko Vidrih Jan 2011

Quality Parameters And Total Phenolic Content In Tomato Fruits Regarding Cultivar And Microclimatic Conditions, Nina Kacjan Marsic, Lea Gasperlin, Veronika Abram, Maja Budic, Rajko Vidrih

Turkish Journal of Agriculture and Forestry

The aim of this research was to evaluate the color, firmness, and total phenolic (TP) content in tomatoes according to cultivar and growing conditions. Cultivars with oval, elongated, round, and cherry-shaped fruits of determinate tomato were grown in Mediterranean (Dragonja Valley) and continental regions. Experiments in the continental region were conducted outdoors (Ljubljana-field) and under a low tunnel (Ljubljana-tunnel). Results indicated that the color and firmness were significantly influenced by the typology of the cultivars and by the maturity stage associated with the climatic conditions. Oval, elongated, and cherry fruits had darker and more intensely red fruit skins, with significantly …

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Time-Dependent Changes In Distribution Patterns Of Soil Bulk Density And Penetration Resistance In A Rangeland Under Overgrazing, Ekrem Lütfi̇ Aksakal, Taşkin Öztaş, Müdahi̇r Özgül Jan 2011

Time-Dependent Changes In Distribution Patterns Of Soil Bulk Density And Penetration Resistance In A Rangeland Under Overgrazing, Ekrem Lütfi̇ Aksakal, Taşkin Öztaş, Müdahi̇r Özgül

Turkish Journal of Agriculture and Forestry

High soil bulk density and penetration resistance as an indication of soil compaction affect soil infiltration and runoff. Overgrazed rangelands are under severe erosion risk because of soil compaction. The objective of this study was to determine changes in soil bulk density and penetration resistance in a high altitude rangeland within a 3-month grazing period. A 5-ha rangeland (200 × 250 m) was transected with intervals of 25 × 5 m, and soil penetration resistance was measured at 459 points in the 20-cm surface soil layer on 3 different dates (15 July, 15 August, and 15 September). At each intersection …

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Effect Of Mycorrhizal Inoculation On Growth, Nitrogen Fixation, And Nutrient Uptake In Cicer Arietinum (L.) Under Salt Stress, Neera Garg, Shikha Chandel Jan 2011

Effect Of Mycorrhizal Inoculation On Growth, Nitrogen Fixation, And Nutrient Uptake In Cicer Arietinum (L.) Under Salt Stress, Neera Garg, Shikha Chandel

Turkish Journal of Agriculture and Forestry

Most legumes in natural conditions form a symbiosis with arbuscular mycorrhizal (AM) fungi. AM fungi in saline soils have been reported to improve salinity tolerance and growth in plants. In the present study, interaction between mycorrhizal fungus, Glomus mosseae, and salinity stress in relation to plant growth, nitrogen fixation, and nutrient accumulation was evaluated in Cicer arietinum (L.) (chickpea). Two genotypes of chickpea (Pusa-329, salt tolerant, and Pusa-240, salt sensitive) were compared under different levels of salinity with and without mycorrhizal inoculations. Salt stress resulted in a noticeable decline in shoot and root dry matter accumulation, resulting in a decline …

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Effects Of Different Material Coatings On The Wearing Of Plowshares In Soil Tillage, Muammer Nalbant, A. Tufan Palali Jan 2011

Effects Of Different Material Coatings On The Wearing Of Plowshares In Soil Tillage, Muammer Nalbant, A. Tufan Palali

Turkish Journal of Agriculture and Forestry

The wearing behavior of coated layers on plowshares used in soil tillage was investigated. Plowshares produced from DIN EN 10 083 (30 MnB5) steel, widely used in plows, were coated with 20 \mum hard chromium by electrolysis method, 20 \mum electro-less nickel by chemical treatments, and 4 \mum titaniumnitride (TiN) by physical vapor deposition to increase wearing resistance. The coated plowshare specimens, together with uncoated plowshare specimens, were mounted on test equipment to analyze their wearing characteristics in a sandy clay loam soil at a speed of 5.8 km h^{-1}. The thickness of the coating and the mass loss of …

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