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2015

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Articles 241 - 270 of 326

Full-Text Articles in Forest Sciences

Yield And Mineral Composition Of Grapevine (Vitis Vinifera L. Cv. Karaerik)As Affected By Boron Management, Adem Güneş, Cafer Köse, Meti̇n Turan Jan 2015

Yield And Mineral Composition Of Grapevine (Vitis Vinifera L. Cv. Karaerik)As Affected By Boron Management, Adem Güneş, Cafer Köse, Meti̇n Turan

Turkish Journal of Agriculture and Forestry

Boron (B) deficiency is widespread in the northeastern Anatolian region of Turkey. This could impact the production and quality of grapevine (Vitis vinifera L. cv. Karaerik). A field experiment was conducted for determining the optimum economic B rate (OEBR), critical soil test, and tissue B values for yield and quality response of grapevine to B fertilizer application method (foliar and soil) at 5 doses (0, 1, 3, 9, and 12 kg B/ha) for 2 years. OEBR of foliar and soil application ranged from 6.4 to 8.5 kg B/ha with an average yield of 20.2-12.8 t/ha, respectively. The average soil B …

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Method For Substitute Modulus Determination Of Furniture Frame Construction Joints, Hasan Özgür İmi̇rzi̇, Jerzy Smardzewski, Ni̇hat Döngel Jan 2015

Method For Substitute Modulus Determination Of Furniture Frame Construction Joints, Hasan Özgür İmi̇rzi̇, Jerzy Smardzewski, Ni̇hat Döngel

Turkish Journal of Agriculture and Forestry

The goal of the performed experiments was to determine the strength, stiffness, and modulus of the elasticity of dowel, mortise and loose-tenon, and mortise and tenon L-type furniture joints under diagonal tension and compression loads. The specimens were constructed from Turkish beech (Fagus orientalis L.), white oak (Quercus alba), and white walnut (Juglans cinerea L.) and were assembled with a water-resistant PVAC adhesive. According to the obtained results, the highest stiffness/strength values were estimated in mortise and tenon joints constructed of white oak, whereas dowel joints constructed from Turkish beech showed the lowest stiffness/strength and deformability. The elasticity modulus of …

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Influences Of Different Iron Levels On Plant Growth And Photosynthesis Of W. Murcott Mandarin Grafted On Two Rootstocks Under High Ph Conditions, Meral İncesu, Turgut Yeşi̇loğlu, Berken Çi̇men, Bi̇lge Yilmaz Jan 2015

Influences Of Different Iron Levels On Plant Growth And Photosynthesis Of W. Murcott Mandarin Grafted On Two Rootstocks Under High Ph Conditions, Meral İncesu, Turgut Yeşi̇loğlu, Berken Çi̇men, Bi̇lge Yilmaz

Turkish Journal of Agriculture and Forestry

W. Murcott scion, budded onto two rootstocks, was evaluated under high pH conditions supplied with different Fe levels. Plant dry weight, leaf area, iron chlorosis symptom scale, leaf chlorophyll concentration, net photosynthetic rate, and ferric-chelate reductase (FCR) activity variables were investigated under high pH conditions. Control plants (T1) produced the most leaf area, whereas plants grown without Fe (T2) produced the least. Dry weight was highest in 'Volkameriana' T1 (control) plants and lowest in 'Swingle citrumelo' T3 (10 μM Fe and 7.8 pH) and T2 (0 μM Fe and 7.8 pH) treatments. Significant differences in SPAD and iron chlorosis scale …

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N-Acetylcysteine Increased Rice Yield, Mohd Nozulaidi, Md Sarwar Jahan, Mohd Khairi, Mohammad Moneruzzaman Khandaker, Mat Nashriyah, Yusop Mohd Khanif Jan 2015

N-Acetylcysteine Increased Rice Yield, Mohd Nozulaidi, Md Sarwar Jahan, Mohd Khairi, Mohammad Moneruzzaman Khandaker, Mat Nashriyah, Yusop Mohd Khanif

Turkish Journal of Agriculture and Forestry

N-acetylcysteine (NAC) biosynthesized reduced glutathione (GSH), which maintains redox homeostasis in plants under normal and stressful conditions. To justify the effects of NAC on rice production, we measured yield parameters, chlorophyll (Chl) content, minimum Chl fluorescence (Fo), maximum Chl fluorescence (Fm), quantum yield (Fv/Fm), net photosynthesis rate (Pn), photosynthetically active radiation (PAR), and relative water content (RWC). Four treatments, N1G0 (nitrogen (N) with no NAC), N1G1 (N with NAC), N0G0 (no N and no NAC), and N0G1 (no N but with NAC), were arranged in a completely randomized design with five replications. Nitrogen significantly increased yield and yield parameters of …

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Auxin-Mediated Growth Of Rice In Cadmium-Contaminated Soil, Hussna Farooq, Hafiz Naeem Asghar, Muhammad Yahya Khan, Muhammad Saleem, Zahir Ahmad Zahir Jan 2015

Auxin-Mediated Growth Of Rice In Cadmium-Contaminated Soil, Hussna Farooq, Hafiz Naeem Asghar, Muhammad Yahya Khan, Muhammad Saleem, Zahir Ahmad Zahir

Turkish Journal of Agriculture and Forestry

Pollution from heavy metals is a global problem that is very dangerous to the environment. Among the heavy metals, cadmium is receiving more and more attention because it is one of the most ecotoxic, making it very harmful for biological activity in soil, biodiversity, plant metabolism, and human and animal health. Phytohormones, produced by plants, control or regulate germination, growth, metabolism, or other physiological activities, and they can alleviate the toxic effects of heavy metals on plant growth. Auxin is the most abundant natural growth hormone, controlling apical dominance, tropism, elongation of shoots, and initiation of roots in plants. However, …

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Assessment Of Fruit Characteristics And Genetic Variation Among Naturally Growingwild Fruit Elaeagnus Angustifolia Accessions, Aydin Uzun, Buket Çeli̇k, Turan Karadeni̇z, Kadi̇r Uğurtan Yilmaz, Cafer Altintaş Jan 2015

Assessment Of Fruit Characteristics And Genetic Variation Among Naturally Growingwild Fruit Elaeagnus Angustifolia Accessions, Aydin Uzun, Buket Çeli̇k, Turan Karadeni̇z, Kadi̇r Uğurtan Yilmaz, Cafer Altintaş

Turkish Journal of Agriculture and Forestry

Elaeagnus angustifolia L. is a deciduous wild-growing fruit species that plays significant roles in maintaining ecosystem functions in arid regions. In the present study, the fruit characteristics and genetic variations among 56 E. angustifolia accessions collected from the Central Anatolian region of Turkey were determined. The majority of the variations were observed in fruit characteristics. Results revealed that fruit weights varied between 0.59 g and 2.56 g, fruit lengths between 1.13 cm and 2.58 cm, fruit widths between 0.86 cm and 1.67 cm, fruit shape indexes between 0.52 and 0.92, and pedicle lengths between 1.95 mm and 7.74 mm. The …

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Genetic Variability And Relationship Studies In New Indian Papaya (Carica Papaya L.) Germplasm Using Morphological And Molecular Markers, Parmeshwar Lal Saran, Ravish Choudhary, Ishwar Singh Solanki, Pravin Patil, Sanjay Kumar Jan 2015

Genetic Variability And Relationship Studies In New Indian Papaya (Carica Papaya L.) Germplasm Using Morphological And Molecular Markers, Parmeshwar Lal Saran, Ravish Choudhary, Ishwar Singh Solanki, Pravin Patil, Sanjay Kumar

Turkish Journal of Agriculture and Forestry

Papaya germplasm showed wide morphological diversity in terms of fruit yield, weight, length, cavity, fruiting zone, flesh thickness, flesh color, and total soluble solids content. RAPD and ISSR markers also showed polymorphisms at rates of of 84.32% and 84.67%, respectively. Jaccard's genetic similarity values of RAPD and ISSR were found in the range of 0.30-0.99 (average: 0.65) and 0.26-0.95 (average: 0.61), respectively, suggesting a moderate level of genetic diversity within the papaya group. Seven of the 15 RAPD primers and 5 of the 11 ISSR primers were also able to generate cultivar-specific amplicons, which were used for identification of germplasms …

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Major Quantitative Trait Loci For Flowering Time In Lentil, Abdullah Kahri̇man, Hülya Yilmaz Temel, Abdulkadi̇r Aydoğan, Muhammed Bahatti̇n Tanyolaç Jan 2015

Major Quantitative Trait Loci For Flowering Time In Lentil, Abdullah Kahri̇man, Hülya Yilmaz Temel, Abdulkadi̇r Aydoğan, Muhammed Bahatti̇n Tanyolaç

Turkish Journal of Agriculture and Forestry

Quantitative trait loci (QTLs) for flowering time (FT) in lentil were located using a recombinant inbreed line population derived from an intraspecific cross of Precoz × WA8649041. Experiments for FT were conducted in 2 locations (Haymana, Turkey and Pullman, WA, USA) for 5 years (from 1998 to 2002 in both Pullman and Haymana). A linkage map was constructed using 149 markers (RAPD, AFLP, ISSR, SSR, and 2 morphological markers) located on 11 linkage groups (LGs). Analysis of variance of FT was found to be significant for all locations and years. One major QTL for FT was identified on LG6 across …

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Crude Extract Of Trichoderma Elicits Agarwood Substances In Cell Suspensionculture Of The Tropical Tree, Aquilaria Malaccensis Lam., Shashita Jayaraman, Rozi Mohamed Jan 2015

Crude Extract Of Trichoderma Elicits Agarwood Substances In Cell Suspensionculture Of The Tropical Tree, Aquilaria Malaccensis Lam., Shashita Jayaraman, Rozi Mohamed

Turkish Journal of Agriculture and Forestry

Agarwood is the precious fragrant wood produced by the tropical tree Aquilaria, often after elicitation by wounding or fungal attack. In this study we established a cell suspension culture of A. malaccensis from leaf-derived callus and induced agarwood production in the culture using fungal elicitors. Elicitors were made from crude mycelial extracts of two fungal species from the genera Trichoderma and Lasidiplodia. The elicitors were added to the cell suspension culture, initiated with 2 g of fresh calli, at concentrations ranging from 2 to 10 mg L-1. A light agarwood scent was detected from the suspension culture elicited with 8 …

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Comparison Of Berry Quality In Highbush Blueberry Cultivars Grown According To Conventional And Organic Methods, Ireneusz Ochmian, Karolina Kozos, Piotr Chelpinski, Malgorzata Szczepanek Jan 2015

Comparison Of Berry Quality In Highbush Blueberry Cultivars Grown According To Conventional And Organic Methods, Ireneusz Ochmian, Karolina Kozos, Piotr Chelpinski, Malgorzata Szczepanek

Turkish Journal of Agriculture and Forestry

This research was conducted in the Laboratory Orchard at the Department of Horticulture, West Pomeranian University of Technology in Szczecin and at a certified production farm specializing in the cultivation of highbush blueberry located in Szczecin. The effect of cultivation conditions?organic plantation in organic peat substrate (pH 3.46) and conventional plantation in mineral substrate (pH 5.32)-on the berry quality of four highbush blueberry cultivars (firmness, size, chemical composition including content of organic compounds and polyphenols) was examined. Blueberry bushes were planted at a spacing of 2.3 × 1.2 m. Bushes were planted on organic and conventional plantations, and the substrates …

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Genetic Variation In Wheat Germplasm For Salinity Tolerance Atseedling Stage: Improved Statistical Inference, Babar Hussain, Abdus Salam Khan, Zulfiqar Ali Jan 2015

Genetic Variation In Wheat Germplasm For Salinity Tolerance Atseedling Stage: Improved Statistical Inference, Babar Hussain, Abdus Salam Khan, Zulfiqar Ali

Turkish Journal of Agriculture and Forestry

Salinity is the major threat to global wheat production, particularly in arid and semiarid areas. Breeding salt-tolerant cultivars is one feasible solution, while the presence of genetic variation is a prerequisite for genetic improvement. To detect genetic variation for salt tolerance in wheat, a total of 150 wheat genotypes were tested for seedling-stage tolerance response at 300 mM NaCl in hydroponic culture. Significant differences (P ≤ 0.001) were identified in wheat for seedling traits, and 20 salt-tolerant and 5 susceptible genotypes were selected on the basis of root and shoot weights. These 25 genotypes were tested for salt-tolerance response at …

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Seed Priming With Cacl2 And Ridge Planting For Improved Drought Resistance In Maize, Muhammad Bismillah Khan, Mubshar Hussain, Abid Raza, Shahid Farooq, Khawar Jabran Jan 2015

Seed Priming With Cacl2 And Ridge Planting For Improved Drought Resistance In Maize, Muhammad Bismillah Khan, Mubshar Hussain, Abid Raza, Shahid Farooq, Khawar Jabran

Turkish Journal of Agriculture and Forestry

Drought-induced losses in crop output have forced the scientific community to develop efficient management strategies to cope with the adversities of drought stress. This field trial was done to assess the role of seed priming techniques and planting methods for improving drought resistance in Pakistani hybrid maize in 2011. Maize seeds were soaked in an aerated solution of CaCl2 (osmopriming; $\Psi$s -1.25 MPa) and distilled water (hydropriming), while untreated dry seeds were taken as controls. Primed and untreated seeds were sown on either ridges or a flat seedbed and were subjected to drought at vegetative and tasseling stages. Drought was …

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Effect Of Ditylenchus Dipsaci Kühn, 1857 (Tylenchida: Anguinidae) On Onionyield In Karaman Province, Turkey, Eli̇f Yavuzaslanoğlu, Abdullah Di̇ki̇ci̇, İbrahi̇m Hali̇l Elekci̇oğlu Jan 2015

Effect Of Ditylenchus Dipsaci Kühn, 1857 (Tylenchida: Anguinidae) On Onionyield In Karaman Province, Turkey, Eli̇f Yavuzaslanoğlu, Abdullah Di̇ki̇ci̇, İbrahi̇m Hali̇l Elekci̇oğlu

Turkish Journal of Agriculture and Forestry

This study was conducted to investigate the effect of the stem and bulb nematode Ditylenchus dipsaci Kühn (Tylenchida: Anguinidae) on yield parameters of some onion varieties in Karaman Province, Turkey. Experiments were established in a naturally infested onion field during two consecutive years (2012-2013). Nematode population development was followed at the beginning and end of the experiment. The reproduction rate was also calculated. Onion yield and the representative average diameter and length of the onion cultivar bulbs were determined. Yield parameters of six onion varieties were compared on nematicide-treated and untreated control plots in the experiments. Nematode populations significantly decreased …

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Metal Uptake, Oxidative Metabolism, And Mycorrhization In Pigeonpeaand Pea Under Arsenic And Cadmium Stress, Neera Garg, Priyanka Singla, Purnima Bhandari Jan 2015

Metal Uptake, Oxidative Metabolism, And Mycorrhization In Pigeonpeaand Pea Under Arsenic And Cadmium Stress, Neera Garg, Priyanka Singla, Purnima Bhandari

Turkish Journal of Agriculture and Forestry

Presence of arsenic (As) and cadmium (Cd) at elevated levels in the soils is threatening agricultural productivity. Arbuscular mycorrhizae (AM) enhance plant resistance to metal(loid)s by sequestering them into roots, thus restricting their translocation into leaves. The present study evaluated differential responses of AM-colonized Cajanus cajan and Pisum sativum plants to As and Cd uptake and oxidative metabolism under As and Cd stress (0, 30, and 60 mg kg-1). Arsenic uptake was significantly higher than Cd uptake, which caused greater growth inhibitions and induced oxidative stress. Pea was more sensitive, with higher toxicity symptoms in roots than leaves. Mycorrhizae were …

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Effects Of Roasting And Enzyme Pretreatments On Yield And Quality Of Cold-Pressed Poppy Seed Oils, Di̇lek Dündar Emi̇r, Buket Aydeni̇z, Emi̇n Yilmaz Jan 2015

Effects Of Roasting And Enzyme Pretreatments On Yield And Quality Of Cold-Pressed Poppy Seed Oils, Di̇lek Dündar Emi̇r, Buket Aydeni̇z, Emi̇n Yilmaz

Turkish Journal of Agriculture and Forestry

The aim of this study was to compare the effects of roasting and enzyme pretreatments on the yield and quality of cold-pressed oils obtained from 3 poppy seed varieties (Ofis 3 (blue), Ofis 4 (yellow), Ofis 8 (white)). The oil recovery range was 21.89%-38.36% with cold pressing. The oily cakes (meal) contained 42-168 g/kg oil and 113-166.3 g/kg moisture after the cold pressing. Physicochemical and quality tests were conducted to evaluate and compare the efficacy of the pretreatments. Furthermore, fatty acid, sterol, and tocopherol compositions were determined. Oil recovery was enhanced by enzyme treatment in Ofis 3 (28.31%) and Ofis …

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Efficacy Of The Entomopathogenic Nematode Heterorhabditis Bacteriophora Using Different Application Methods In The Presence Or Absence Of A Natural Enemy, Ramalingam Karthik Raja, Canan Hazir, Ari̇fe Gümüş, Cem Asan, Mehmet Karagöz, Selçuk Hazir Jan 2015

Efficacy Of The Entomopathogenic Nematode Heterorhabditis Bacteriophora Using Different Application Methods In The Presence Or Absence Of A Natural Enemy, Ramalingam Karthik Raja, Canan Hazir, Ari̇fe Gümüş, Cem Asan, Mehmet Karagöz, Selçuk Hazir

Turkish Journal of Agriculture and Forestry

Various application methods for the entomopathogenic nematode Heterorhabditis bacteriophora were evaluated under laboratory and field conditions. Four different methods of applying the infective juveniles (IJs) of the nematode to soil were assessed including (1) insect cadavers (referred to as nematode-infected cadavers), (2) subsurface injection, (3) spraying, and (4) drip irrigation. In the laboratory experiment, except for the control with no nematodes, all treatments showed more than 95% insect mortality of the bait insect (Galleria mellonella) with no significant differences among treatments. The same experimental setup was conducted with the introduction of mites, Sancassania polyphyllae (Acari: Acaridae), which are natural enemies …

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Comparative Analysis Of Genetic Diversity Among Chinese Watermelon Germplasmsusing Ssr And Srap Markers, And Implications For Future Genetic Improvement, Pangqiao Wang, Qiong Li, Jianbin Hu, Yan Su Jan 2015

Comparative Analysis Of Genetic Diversity Among Chinese Watermelon Germplasmsusing Ssr And Srap Markers, And Implications For Future Genetic Improvement, Pangqiao Wang, Qiong Li, Jianbin Hu, Yan Su

Turkish Journal of Agriculture and Forestry

The genetic diversity of watermelon [Citrullus lanatus (Thunb.) Matsum. & Nakai] in China, the world's largest producer of watermelon fruits, has not been examined. Two molecular markers, sequence-related amplified polymorphism (SRAP) and simple sequence repeat (SSR), were used to investigate the genetic variation and genetic relationship among 54 Chinese watermelon accessions, as well as 7 accessions from Africa, the United States, and Japan. SRAP assay generated 312 bands, of which 163 were polymorphic, while SSR assay detected 101 alleles with 87 polymorphic alleles and 114 genotypes. A comparative analysis of the diversity index, effective multiplex ratio, and marker index of …

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Species-Specific Growth And Photosynthetic Responses Of First-Year Seedlingsof Four Coniferous Species To Open-Field Experimental Warming, Saerom Han, Sun Jeong Lee, Tae Kyung Yoon, Seung Hyun Han, Jongyeol Lee, Seongjun Kim, Jaehong Hwang, Min Seok Cho, Yowhan Son Jan 2015

Species-Specific Growth And Photosynthetic Responses Of First-Year Seedlingsof Four Coniferous Species To Open-Field Experimental Warming, Saerom Han, Sun Jeong Lee, Tae Kyung Yoon, Seung Hyun Han, Jongyeol Lee, Seongjun Kim, Jaehong Hwang, Min Seok Cho, Yowhan Son

Turkish Journal of Agriculture and Forestry

Temperature increase due to climate change may affect the growth and physiological traits of trees. To cope with climate change, it is important to understand the responses of trees to these changes, as well as how these responses vary among species, functional groups, and biomes. In this study, we aimed to examine the species-specific growth and photosynthetic responses of first-year seedlings of 4 coniferous species to future temperature increase by conducting an open-field experimental warming study. The air temperature in the warmed plots was maintained at 3.02 °C higher than that in the control plots with an open-field experimental warming …

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Apomixis: New Horizons In Plant Breeding, Nejdet Kandemi̇r, İbrahi̇m Saygili Jan 2015

Apomixis: New Horizons In Plant Breeding, Nejdet Kandemi̇r, İbrahi̇m Saygili

Turkish Journal of Agriculture and Forestry

Apomixis is seed formation without fertilization, commonly observed in wild plant species. It has the advantages of clonal reproduction and propagation by seeds. Although it has a complex inheritance, genes controlling apomictic reproduction are being identified. Transfer of apomixis to crop species through wide crosses has not been successful so far, but transgenic technology offers a more powerful way to introgress apomixis into crop species. When crop species acquire this trait, superior genotypes, including hybrids, will be fixed and seeds will be multiplied without segregation of superior gene combinations. In addition, it will make hybrid production possible in all crops, …

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Modification Of Centromere Structure: A Promising Approach For Haploid Line Production In Plant Breeding, Ahmet Lati̇f Tek, Robert M. Stupar, Kiyotaka Nagaki Jan 2015

Modification Of Centromere Structure: A Promising Approach For Haploid Line Production In Plant Breeding, Ahmet Lati̇f Tek, Robert M. Stupar, Kiyotaka Nagaki

Turkish Journal of Agriculture and Forestry

Breeding based on doubled-haploid approaches has recently become a common tool for accelerating crop improvement in many plant species. However, many plant species do not have a reliable method for haploid induction. A promising new approach involving centromere engineering has recently been proposed to overcome this limitation. Here we provide a perspective of this novel method for the production of haploid plants, which was originally described in the model plant species Arabidopsis thaliana. Centromeres, known to be critical for the accurate distribution of chromosomes in every cell division, have now become a novel target for crop improvement by enabling doubled-haploid …

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Investigation Of Root-Knot Nematode (Meloidogyne Spp.) Resistance In Almond Rootstocks With Dna Markers, Sultan Bay Türkoğlu, Nergi̇z Çoban, Ali̇ Özkan, Hali̇t Seyfetti̇n Atli, Canan Can Jan 2015

Investigation Of Root-Knot Nematode (Meloidogyne Spp.) Resistance In Almond Rootstocks With Dna Markers, Sultan Bay Türkoğlu, Nergi̇z Çoban, Ali̇ Özkan, Hali̇t Seyfetti̇n Atli, Canan Can

Turkish Journal of Agriculture and Forestry

Seven almond varieties, Ferragnes, Nemaguard, AB3 (Amygdalus orientalis Mill.), GN22, GF677, Myrobalan(Prunus cerasifera),and Pissardi nigra, and F1 crossbreed almonds, Ferragnes × Pissardi nigra, Ferragnes × Myrobalan, Ferragnes × GN22, Nemaguard × GF677, Myrobalan × AB3 (Prunus dulcis Mill.), Myrobalan × Ferragnes, Pissardi nigra × AB3, and GF677 × Myrobalan, were used to determine resistance against root-knot nematode (RKN) (Meloidogyne spp.) using DNA markers. Parental lines and 316 F1 plants were tested with SSR (plgms8, plgms9, and plgms19) and STS (STS-OPS14a, STS-834b) markers. It was found that plgms19 exhibited 76%, 77.01%, 73.13%, and 86.6% inheritance of resistance in the Ferragnes × …

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Spectral Reflectance Indices As A Rapid And Nondestructive Phenotyping Tool For Estimating Different Morphophysiological Traits Of Contrasting Spring Wheat Germplasms Under Arid Conditions, Salah El-Hendawy, Nasser Al-Suhaibani, Abd El-Azeem Salem, Shafiq Ur Rehman, Urs Schmidhalter Jan 2015

Spectral Reflectance Indices As A Rapid And Nondestructive Phenotyping Tool For Estimating Different Morphophysiological Traits Of Contrasting Spring Wheat Germplasms Under Arid Conditions, Salah El-Hendawy, Nasser Al-Suhaibani, Abd El-Azeem Salem, Shafiq Ur Rehman, Urs Schmidhalter

Turkish Journal of Agriculture and Forestry

The aim of this study was to investigate whether spectral reflectance indices could be used to estimate different destructive morphophysiological traits of a wide and diverse range of spring wheat germplasm in a rapid and nondestructive manner. A total of 90 spring wheat germoplasms were evaluated under water shortage by applying only three irrigations during the growing cycle of germplasm with the amount of water totaling 2550 m3 ha-1. Ten selected spectral reflectance indices were related to the green leaf number per plant, green leaf area per plant, total dry weight per plant (TDW), grain yield per hectare (GY), leaf …

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After-Effect Of Long-Term Soil Management On Soil Respiration And Otherqualitative Parameters Under Prolonged Dry Soil Conditions, Dalia Feiziene, Dalia Janusauskaite, Virginijus Feiza, Agne Putramentaite, Ausra Sinkeviciene, Skaidre Suproniene, Vytautas Seibutis, Grazina Kadziene, Irena Deveikyte, Sigitas Lazauskas, Daiva Janusauskaite, Virmantas Povilaitis Jan 2015

After-Effect Of Long-Term Soil Management On Soil Respiration And Otherqualitative Parameters Under Prolonged Dry Soil Conditions, Dalia Feiziene, Dalia Janusauskaite, Virginijus Feiza, Agne Putramentaite, Ausra Sinkeviciene, Skaidre Suproniene, Vytautas Seibutis, Grazina Kadziene, Irena Deveikyte, Sigitas Lazauskas, Daiva Janusauskaite, Virmantas Povilaitis

Turkish Journal of Agriculture and Forestry

Climatic conditions of environmental zone Nemoral 2 of Europe are favorable for agricultural development. However, more frequent events of hot air-waves and prolonged droughts occurring as a consequence of climate change lead to soil moisture content reduction down to the plant wilting point. Dry soil conditions may have negative consequences for soil as a habitat. The goal of this study was to evaluate the cumulative after-effect of long-term conventional (CT) and no-tillage (NT) application in combination with or without crop residues on soil physicochemical properties, microbiological activity, and soil respiration (SR) under prolonged dry soil conditions. Long-term CT with residue …

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A Novel Mechanism To Explain Success Of Invasive Herbaceous Species At The Expense Of Natives In Eastern Hardwood Forests, Frank S. Gilliam Jan 2015

A Novel Mechanism To Explain Success Of Invasive Herbaceous Species At The Expense Of Natives In Eastern Hardwood Forests, Frank S. Gilliam

Biological Sciences Faculty Research

Among the more intriguing topics in general ecology courses are the symbiotic relationships (the ‘-isms’ as I sometimes present them – mutualism, commensalism, and parasitism). Of these, mutualism is typically the most appealing to students. The scenario that different species can not only co-exist, but can also provide essential resources/services for one another, resonates well with all but the least interested in the course. Ultimately, however, there is also the palpable degree of dismay when they discover that these relationships arise from mutual exploitation, rather than from some benign force of nature. A flip-side of this, in many ways a …

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Identifying Critical Indicators Of Trail Conditions In High-Use Recreational Areas Of The Roslyn Urban Forest, Jessica Marie Giblin Jan 2015

Identifying Critical Indicators Of Trail Conditions In High-Use Recreational Areas Of The Roslyn Urban Forest, Jessica Marie Giblin

All Master's Theses

The goal of this research is to identify the types and impacts of recreational activities on formal and informal trails in the Roslyn Urban Forest (RUF), Roslyn, Washington. The RUF has over 8 km (5 miles) of trails that are used by recreationalists (Begley 2008). However, high-impact activities have compacted soils, eroded slopes, and affected animal migration corridors. The City of Roslyn's main management goals are to protect and enhance wildlife habitat and to provide a quality non-motorized recreational experience. Spatial analysis methods were applied to identify, code, and classify the trail network. The data includes biophysical attributes of trails …

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Use Of Landsat Data To Characterize Burn Severity, Forest Structure And Invasion By Paulownia (Paulownia Tomentosa) In An Eastern Deciduous Forest, Kentucky, Suraj Upadhaya Jan 2015

Use Of Landsat Data To Characterize Burn Severity, Forest Structure And Invasion By Paulownia (Paulownia Tomentosa) In An Eastern Deciduous Forest, Kentucky, Suraj Upadhaya

Theses and Dissertations--Forestry and Natural Resources

Landsat imagery has been used successfully to assess burn severity and monitor post-fire forest structure in a variety of ecosystems, but to date there are few documented studies on its application in the eastern deciduous forests of the eastern United States. The occurrence of a wildfire in the Daniel Boone National Forest in2010 provided a rare opportunity for research into the use of Landsat data for assessing burn severity and its ecological effects. We used differenced normalized burn ratio (∆NBR) to quantify burn severity. The ∆NBR based burn severity classification had 70% agreement with a qualitative ground-based burn severity assessment. …

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Quaking Aspen At The Residential-Wildland Interface: Elk Herbivory Hinders Forest Conservation., Paul C. Rogers, Allison Jones, James Catlin, James Shuler, Arthur Morris, Michael R. Kuhns Jan 2015

Quaking Aspen At The Residential-Wildland Interface: Elk Herbivory Hinders Forest Conservation., Paul C. Rogers, Allison Jones, James Catlin, James Shuler, Arthur Morris, Michael R. Kuhns

Aspen Bibliography

T: Quaking aspen (Populus tremuloides) forests are experiencing numerous impediments across North America. In the West, recent drought, fire suppression, insects, diseases, climate trends, inappropriate management, and ungulate herbivory are impacting these high biodiversity forests. Additionally, ecological tension zones are sometimes created at residential-wildland interfaces with divergent management directives. For example, private conservation reserves bordering public land may be degraded from browsing where game species find refuge from hunting and plentiful forage. We examined putative herbivore impacts to nearly pure aspen forests at Wolf Creek Ranch (WCR), a sparsely developed residential landscape in northern Utah. Forty-three one-hectare monitoring …

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Altered Fire Regimes And The Persistence Of Quaking Aspen In The Rocky Mountains: A Literature Review, Aaron Rosenblum Jan 2015

Altered Fire Regimes And The Persistence Of Quaking Aspen In The Rocky Mountains: A Literature Review, Aaron Rosenblum

Aspen Bibliography

The persistence of quaking aspen (Populus tremuloides Michx.) is of significant importance to land managers in the Rocky Mountain region. Fire suppression in the past century has been implicated as a mechanism influencing aspen population dynamics, as aspen are generally considered an early seral disturbance adapted species. The heterogeneity of aspen community assemblages and fire regimes makes it difficult to discern what the result of fire suppression has been at large spatial and temporal scales. Decision makers should investigate the questions at hand at the stand level in their study location to best determine the mechanisms at play, as well …

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Long-Term Vegetation Change In Utah's Henry Mountains: A Study In Repeat Photography, Charles E. Kay Jan 2015

Long-Term Vegetation Change In Utah's Henry Mountains: A Study In Repeat Photography, Charles E. Kay

Aspen Bibliography

An extensive search was conducted of archival and other sources to locate as many historical photographs as possible for the Henry Mountains in south-central Utah. Those images were then taken into the field, the original camera stations relocated, and modern pictures made of the historical scenes to evaluate long-term vegetation change and land management activities. In all, 626 repeat photo sets were compiled—608 by the author and 18 by Earl Hindley. This book includes 126 photo sets that were representative of the areas studied.

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Regeneration Dynamics Of White Spruce, Trembling Aspen, And Balsam Poplar In Response To Disturbance, Climatic, And Edaphic Factors In The Cold, Dry Boreal Forests Of The Southwest Yukon, Canada, Shyam K. Paudel, Craig R. Nitschke, Suzanne W. Simard, John L. Innes Jan 2015

Regeneration Dynamics Of White Spruce, Trembling Aspen, And Balsam Poplar In Response To Disturbance, Climatic, And Edaphic Factors In The Cold, Dry Boreal Forests Of The Southwest Yukon, Canada, Shyam K. Paudel, Craig R. Nitschke, Suzanne W. Simard, John L. Innes

Aspen Bibliography

The southwestern region of the Yukon Territory of Canada has experienced an unprecedented spruce bark beetle outbreak (Dendroctonus rufipennis) and an increase in the frequency of forest fires that extend beyond historical trends and that have caused significant impacts on forest structure and composition. A Strategic Forest Management Plan (SFMP) for the Champagne and Aishihik Traditional Territory located in the southwest Yukon was implemented in 2004 in response to the spruce bark beetle (D. rufipennis) infestation and increased fire risk. The plan has recommended salvage harvesting of beetle-killed stands as a strategy to facilitate the development …

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