Forest Sciences Commons^™

The Effect Of Nitrogen And Phosphorus Fertilization On Yield, Some Fruit Characteristics, Hormone Concentrations, And Alternate Bearing In Pistachio, Nurdan Tuna Güneş, Yeşi̇m Okay, A. İlhami̇ Köksal, Mehmet Köroğlu

Turkish Journal of Agriculture and Forestry

This research was carried out in order to determine the effects of nitrogen and phosphorus fertilization on yield, some fruit characteristics, hormone concentrations, and alternate bearing in pistachio (Pistacia vera L.) cv. 'Kırmızı' grafted on P. vera over 3 consecutive years. Nitrogen was applied at the rate of 0 (control), 800, 1000, and 1200 g tree^{-1}, and phosphorus was applied at the rate of 0 (control), 200, 400, and 600 g tree^{-1} into the soil. As a result, although yield mostly decreased and nut weight increased, especially in the 2^{nd} year ('off' year), considerable interactions among fertilizer rates were determined …

Linear-Like Discrete-Time Fuzzy Control In The Regulation Of Irrigation Canals, Ömer Faruk Durdu

Turkish Journal of Agriculture and Forestry

A linear-like discrete-time fuzzy controller was designed to control and stabilize a single-pool irrigation canal. Saint Venant equations for open-channel flow were linearized using the Taylor series and a finite-difference approximation of the original nonlinear partial differential equations. Using the linear optimal control theory, a traditional linear quadratic regulator (LQR) was first developed for an irrigation canal with a single-pool, and the results were observed. Then a linear-like global system representation of a discrete-time fuzzy system was proposed by viewing a discrete-time fuzzy system in a global concept and unifying the individual matrices into synthetic matrices. This linear-like representation aided …

Allelopathic Potential Of Euphorbia Helioscopia L. Against Wheat (Triticum Aestivum L.), Chickpea (Cicer Arietinum L.) And Lentil (Lens Culinaris Medic.), Asif Tanveer, Aqeel Rehman, Muhammad Mansoor Javaid, Rana Nadeem Abbas, Muhammad Sibtain, Azraf Ul Haq Ahmad, Muhammad Sahid Ibin-I-Zamir, K. M. Chaudhary, A. Aziz

Turkish Journal of Agriculture and Forestry

Studies investigating the allelopathic effect of root, stem, leaf, and fruit water extracts and infested soil of Euphorbia helioscopia L. on the seed germination and seedling growth of wheat, chickpea, and lentil were conducted in a completely randomized design with 4 replications. Water extracts of root, stem, leaf, and fruit were prepared by soaking dried plant parts of E. helioscopia in water (1:20 w/v) for a period of 24 h. Seedling emergence, seedling vigor index, and total dry weight of wheat, chickpea, and lentil seedlings were significantly reduced when these crops were grown in soil taken from an E. helioscopia …

Changes In Distribution Patterns Of Soil Penetration Resistance Within A Silage-Corn Field Following The Use Of Heavy Harvesting Equipments, Ekrem Lütfi̇ Aksakal, Taşkin Öztaş

Turkish Journal of Agriculture and Forestry

Soil compaction caused by heavy wheeling reduces water infiltration, root development, and yield, and increases bulk density and soil strength. The objective of this study was to determine changes in spatial variability patterns of soil penetration resistance before and after using the silage machine in a corn-growing field. Soil penetration resistance was measured in a 100 × 400 m field with 10 m intervals just before and after harvesting. Measurements were taken from the 20 cm top layer on rows and inter-rows throughout each transect. The mean penetration resistance of 1353 measurements before and after harvesting was 2097 and 3116 …

Effects Of Self-Incompatibility Control Substance And Blossom Thinner On Fruit Set And Quality Of Apple (Malus Domestica), Tae Kwon Son, Jung Hee Kim, Cyren Rico, Sang Chul Lee, Il Kyung Chung

Turkish Journal of Agriculture and Forestry

Effects of calcium nitrate (CN) and sodium sulfate (SS) blossom thinning agents applied after self-incompatibility control substance (SICS) treatment on the fruit set rate and quality of apple were investigated for 2 cropping seasons. CN and SS at 0.1% and 0.2% concentrations were applied once (3 or 4 days after SICS treatment) or twice (3 and 5 or 4 and 6 days after SICS treatment). Commercial Japanese flower thinning agent (FTA: Ekoruki) treated and untreated apple trees were used as treated and untreated controls. SICS was sprayed 7 days before full bloom. Both agents showed a fertilizing effect in 'Hongno', …

Effects Of Alternative Spray Programs And Various Combinations Of Green Pruning On Powdery Mildew [Uncinula Necator (Schw.) Burr.] In Karasakız (Kuntra) Grape Cultivar, İsmet Yildirim, Alper Dardeni̇z

Turkish Journal of Agriculture and Forestry

The effects of alternative spray programs, NaHCO_3/K_2SiO_3 + sulphur, KH_2PO_4/di - 1 - p - menthone, and a conventional spray program, penconazole/sulphur, as well as various levels of shoot toppings (to the 1st, 3rd, and 5th buds) on powdery mildew disease [Uncinula necator (Schw.) Burr.] and grape quality were investigated in this study. The study was carried out on grape variety Karasakız (Vitis vinifera L.) during 2003 and 2004 growing seasons. The effectiveness of NaHCO_3/K_2SiO_3 + sulphur, KH_2PO_4/di - 1 - p - menthene alternate spray programs against powdery mildew was found as 74.8% and 70.7% on leaf and 65.7% …

Isolation And Identification Of Culturable Forms Of Bacteria From The Sweet Potato Whitefly Bemesia Tabaci Genn. (Homoptera: Aleyrodidae) In Jordan, Mazen Ahmad Ateyyat, Mohamad Shatnawi, Mohammad Al-Mazra'awi

Turkish Journal of Agriculture and Forestry

Homopteran insects contain bacteria in their cells and tissues known as "secondary symbionts," which under special environmental circumstances act against their host insects. In this study, both molecular- and culture-based methods were used to characterize the bacteria associated with the whitefly in Jordan. We isolated, cultured, and identified 11 species of bacteria from nymphs (6 species), adults (8 species), and parasitized pupae (2 species) of the whitefly Bemesia tabaci collected from different vegetable crops planted in different localities in Jordan. The identities of the cultured bacteria were evaluated using PCR with sequencing of 16S rRNA gene fragments and fluorescence in …

Transformation Of Some Organic Matter Components In Organic Soils Exposed To Drainage, Barbara Kalisz, Andrzej Lachacz, Roman Glazewski

Turkish Journal of Agriculture and Forestry

In drained Histosols used as pastures or arable fields the muck-forming process transforms organic soil formations into muck. The rush vegetation (Caricetum acutiformis and Glycerietum maximae) covering Histosols in the organic matter accumulation stage is replaced by meadow vegetation (Molinietalia order). During sustained drainage mucks are transformed into muck-like formations that contain less than 12% organic carbon. The aim of this study was to report the changes in organic matter initiated by the muck-forming process. Soil organic matter was fractionated into humic-acid carbon, fulvic-acid carbon, and humins. The amount of carbon susceptible to oxidation with KMnO4 was also determined and, …

Plant Water Relations And Photosynthetic Activity In Three Tunisian Chickpea (Cicer Arietinum L.) Genotypes Subjected To Drought, Abdelmajid Krouma

Turkish Journal of Agriculture and Forestry

Chickpea (Cicer arietinum L.) is an important food crop grown under rainfed conditions in Mediterranean regions in which drought is a major limiting factor for production. In these areas little attention is given to legumes, and efforts to identify drought-tolerant genotypes are primarily focused on major cereal crops. In the current study a greenhouse experiment was conducted to assess the effects of drought stress on plant growth, photosynthesis, and water relations in 3 Tunisian chickpea genotypes (Cicer arietinum L.). Drought was applied, and soil humidity was maintained at 30% of field capacity (stressed plants) or 100% of field capacity (control …

Stand Conditions Immediately Following A Restoration Harvest In An Old-Growth Pine-Hardwood Remnant, Don C. Bragg

Journal of the Arkansas Academy of Science

Portions of the Levi Wilcoxon Demonstration Forest (LWDF), a privately owned parcel of old growth pine and hardwoods in Ashley County, Arkansas, were recently treated to restore conditions similar to some historic accounts of the virgin forest. Following a hardwood-only cut, a post-harvest inventory showed that the number of tree species in the sample area declined from 24 in 2006 (the most recent pre-harvest inventory) to 12 in 2009. Loblolly (Pinus taeda L.) and shortleaf (Pinus echinata Mill.) pine now comprise 59.2% of the remaining live trees, up from 16.2% in 2006. Between 2006 and 2009, basal area dropped from …

Genetic Diversity, Structure, And Recolonization Patterns Of Kentucky Black Bears, John Tyler Hast

University of Kentucky Master's Theses

After nearly a century of absence, the black bear (Ursus americanus) reappeared in Kentucky during the late 20th century and has since increased in number. Recolonization of bears in the southeastern portion of the state was thought to have been caused by emigration of bears from adjacent states into the Commonwealth, while in the south-central area, bears originated, or natural recolonization may have been supplemented by the translocation of 14 individuals into the Big South Fork National River Recreation Area. To investigate the recolonization patterns of bears in Kentucky, I used 20 microsatellite loci to determine the genetic …

Two Year Response Of A Woody Biofuel Plantation To Intensive Management On A Reclaimed Surface Mine In Eastern Kentucky, Joshua Scott Brinks

University of Kentucky Master's Theses

The establishment of intensively managed woody energy crops on reclaimed surface mine lands provides an opportunity to diversify domestic biomass sources, while increasing the productivity and economic value of underutilized land. Our objective is to test the effect of fertilization and irrigation on the growth, survival, biomass accumulation, biomass allocation, leaf area, and nutrient dynamics of American sycamore (Platanus occidentalis L.) and black locust (Robinia pseudoacacia L.) planted on a reclaimed surface mine. In 2008, replicated plantings of sycamore and black locust were established on the Big Elk mine in eastern Kentucky. Treatments tested include annual granular fertilizer …

Elizabeth Findley Shores Collection Of Roland M. Harper, Zach S. Henderson Library Special Collections

Finding Aids

This collection consists of articles and letters-to-the-editor written by Roland M. Harper for publication in scholarly journals. Sometimes in typescript, his works focus on botany, conservation, and social conditions, primarily in the southeastern United States. Spanning 1906-1965, additional documents, photographs and audio visual materials pertaining to Roland M. Harper’s family history are included. The collection’s creator, Elizabeth Findley Shores, is the author of the biography On Harper's Trail: Roland McMillan Harper, Pioneering Botanist of the Southern Coastal Plain (2008).

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Alkaloids Isolated From Alseodaphne Corneri., Azeana Zahari

Student Works (2010-2019)

The phytochemical study on the leaves and bark of Alseodaphne corneri (Lauraceae) involved extraction and separation of alkaloids by using various chromatographic methods. The structural elucidation of all the alkaloids were done using spectroscopic techniques such as 1D-NMR (1H, 13C, DEPT), 2D-NMR (COSY, NOESY, HMQC, HMBC), UV, IR, MS (GCMS, LCMS, HRMS) and comparison with the literature data. Four aporphines isolated from the leaves of Alseodaphne corneri, were isocorydine 44, norisocorydine 45, N-methyl laurotetanine 46 and N-methyl lindcarpine 47. Isolation and purification of alkaloids from the bark of Alseodaphne corneri afforded six known alkaloids and …

Phytoremediation Of Total Petroleum Hydrocarbons (Tphs) Using Plant Species In Iran, Ali Daryabeigi Zand, Gholamreza Nabi Bidhendi, Nasser Mehrdadi

Turkish Journal of Agriculture and Forestry

Plant-based remediation is a relatively new, efficient, and environmentally friendly technology, which can be promising for removing many contaminants like hydrocarbon pollutants. The main objectives of the current study were to investigate the effect of petroleum hydrocarbons with high initial concentration (about 3.5% by weight) on growth characteristics of maize (Zea mays L.), and tall fescue (Festuca arundinacea) as well as to evaluate the phytoremediation potential of the 2 mentioned plant species in highly contaminated, aged soil. In order to improve the condition of soil nutrients and also study the effect of soil amendment on plant growth, peat amendment was …

Regeneration And Histological Analysis Of Snake Melon (Cucumis Melo Var. Flexuosus (L.) Naudin) By Direct Organogenesis, Yeşi̇m Yalçin Mendi̇, Selay Eldoğan, Rafael Gutakev, Muzaffer İpek, Pembe Çürük, Seli̇m Çeti̇ner

Turkish Journal of Agriculture and Forestry

In vitro morphogenesis of Cucumis melo var. flexuosus (L.) Naudin was studied by direct organogenesis. Induction of adventitious buds was obtained from distal and proximal parts of the cotyledon incubated on Murashige and Skoog (1962) medium containing different concentrations of 6-benzyladenine (BA) (0.0, 0.5, 1.0, and 2.0 mg L^{-1}) and indole-3-acetic acid (IAA) (0.0, 0.1, and 0.5 mg L^{-1}). The best organogenesis was obtained from the proximal part of the cotyledon on medium containing 0.5 mg L^{-1} BA and 0.5 mg L^{-1} IAA (88%). This concentration was used for histological analysis. Less regeneration was obtained on media containing 1.0 mg …

Effects Of Climate Change On Water Resources Of The Büyük Menderes River Basin, Western Turkey, Ömer Faruk Durdu

Turkish Journal of Agriculture and Forestry

Temperature and rainfall changes are both significant components of climate change. This study characterizes the effects of climate change on water resources in the Büyük Menderes river basin in western Turkey, based on hydrology, temperature, and rainfall data from the past 45 years (1963-2007). When analyzed with the Mann-Whitney test, the temperature and precipitation time series exhibited obvious step changes with a 5% level of significance. Both the parametric t-test and nonparametric Mann-Kendall statistical test results showed an increasing trend of the temperature. Over the past 45 years, the temperature increased just about 1 °C. The long-term trend of annual …

Effects Of Sugar Feeding On Lipid, Glycogen, And Total Sugar Levels Of A Female Parasitoid, Bracon Hebetor (Say) (Hymenoptera: Braconidae), Eylem Akman Gündüz, Adem Gülel, Özgür Varer Işitan, Ali̇ Boz, Özlem Cesur

Turkish Journal of Agriculture and Forestry

The goal of this study was to compare the lipid, glycogen, and total sugar levels in completely starved (no water or sugar provided), honey-fed, sucrose-fed, or sugar-starved (only water provided) females of the parasitoid Bracon hebetor (Say) (Hymenoptera: Braconidae). We also quantified the lipid, glycogen, and total sugar levels in newly emerged unfed (day 0) female (n = 30) wasps. The mean amounts of reserves obtained from these females were regarded as a standard for the initial amount of reserves. The glycogen level of emerging females was 17.99 ± 2.02 \mug. As expected, sucrose- or honey-fed females had significantly higher …

Effects Of Rhizobium Strains Isolated From Wild Chickpeas On The Growth And Symbiotic Performance Of Chickpeas (Cicer Arietinum L.) Under Salt Stress, Hati̇ce Öğütçü, Caner Kasimoğlu, Erdal Elkoca

Turkish Journal of Agriculture and Forestry

This study was conducted in order to evaluate the symbiotic effectiveness of Rhizobium leguminosarum bv. ciceri strains isolated from perennial wild chickpeas (Cicer anatolicum) in comparison to standard bacterial culture, N application, and uninoculated control under NaCl salinity stress conditions. For this purpose, 4 strains (DN1, DN7, TN3, and TN4) were obtained from wild chickpeas. Chickpea (Cicer arietinum L.) seeds were inoculated with these strains and grown in pots containing sterile sand under different levels of NaCl (0, 50, and 100 mM) in a controlled plant growth cabinet. Dry weights of root and shoot, root-to-shoot ratio (RSR), number and dry …

Prey Preference, Interaction With Selected Natural Enemies, And Alternative Nutritional Sources Of The Mirid Bug Dicyphus Tamaninii Wagner, Ihab Ghabeish, Azzam Saleh, Abdulfattah Dababat

Turkish Journal of Agriculture and Forestry

The present study aimed to investigate the prey preference of the omnivorous bug Dicyphus tamaninii Wagner (Heteroptera: Miridae) among 5 different prey species, and its interaction with 3 different natural enemies commonly used in greenhouses. Moreover, the survival duration of the predator was studied in response to different nutritional sources. In multi-choice trials all developmental stages of the predator tested, namely N_3, N_5, and adult female, showed a clear preference for Aphis gossypii Glover over other prey species offered. Nonetheless, a considerable number of Tetranychus urticae Koch, Frankliniella occidentalis (Pergande), and Trialeurodes vaporariorum (Westwood) were also consumed. Myzus persicae (Sulzer) …

Robert Edward Tucker, Sr. Papers, Zach S. Henderson Library Special Collections

Finding Aids

This collection consists of Robert Edward Tucker, Sr.’s ornithology field notes and journals concerning observations in the Chatham County area & the Georgia coastal islands. Most materials are handwritten and include daily observations from 1984-1997.

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5th Lone Star Regional Native Plant Conference, Jeff Adkins, David Creech, Greg Grant, Josephine Taylor

Lone Star Regional Native Plant Conference

No abstract provided.

A Public Road Through The Gordon Natural Area Will Destroy This Ecological Treasure, Gerard Hertel

Gordon Natural Area History & Strategic Plan Documents

No abstract provided.

Exotic Invasive Plants In Kentucky, Yu Liang

University of Kentucky Master's Theses

Invasion of exotic species is a significant problem in natural ecosystems, reaching epidemic proportions and resulting in significant economic losses. However, insufficient knowledge of explicit spatial distribution of invasive species hinders our ability to prevent and/or mitigate future invasion. In this study, we demonstrate the use of existing voluntary data to survey invasive plant species in Kentucky. We also reconstructed the historical distribution of 16 exotic invasive plants typical to Kentucky using herbarium records. We found that Kentucky is facing a large threat from exotic invasive plants as they are reported throughout most counties. The distribution maps for four of …

Managing The National Forests Through Place-Based Legislation, Martin Nie, Michael Fiebig

Society and Conservation Faculty Publications

The resolution of multiple use conflicts through place-based (national forest-specific) legislation has recently received increased interest. Most of these proposals combine wilderness designation, restoration objectives, economic development, funding arrangements, and other provisions, in a conservation package to be considered by Congress. Interest in the place-based legislative approach is precipitated by numerous factors, including perceptions of agency gridlock, problems related to forest planning, unresolved roadless and wilderness issues, and the embrace of collaboration. Though the national forests have a more unified governing framework than other federal land systems, the U.S. Forest Service has implemented place-based legislation in a few cases. This …

Methods For Disposing Non-Native Invasive Plants, Karen Bennett

UNH Cooperative Extension

No abstract provided.

Current And Future Molecular Approaches To Investigate The White Pine Blister Rust Pathosystem, B. A. Richardson, A. K. M. Ekramoddoulah, J.-J. Liu, M.-S. Kim, N. B. Klopfenstein

United States Department of Agriculture, Forest Service / University of Nebraska-Lincoln: Faculty Publications

Molecular genetics is proving to be especially useful for addressing a wide variety of research and management questions on the white pine blister rust pathosystem. White pine blister rust, caused by Cronartium ribicola, is an ideal model for studying biogeography, genetics, and evolution because: (1) it involves an introduced pathogen; (2) it includes multiple primary and alternate hosts occurring in large, relatively undisturbed ecosystems; (3) some hosts exhibit endemic resistance; and (4) the disease interaction is long enduring. Molecular techniques are used to investigate population genetics, phylogenetics, hybrids, and proteomics in white pine (Pinus, subgenus Strobus) …

Blister Rusts In China: Hosts, Pathogens, And Management, X. Y. Zhang, Q. Lu, R. A. Sniezko, R. Q. Song, G. Man

United States Department of Agriculture, Forest Service / University of Nebraska-Lincoln: Faculty Publications

China has 12 taxa of white pines (subgenus Strobus), including species of wide distribution valuable to plantation forestry and species of rare endemics only distantly related to other white pines. The most important forest diseases of these white pines are caused by the blister rust fungi of the genus Cronartium that alternate to telial host species of Ribes and Pedicularis. The most serious infestations have occurred in southwestern China on Pinus armandii and in northeastern China on P. koraiensis. The blister rust pathogen on P. armandii has usually been identified as Cronartium ribicola. Several lines of …

Effects Of Splat® Gm Sprayable Pheromone Formulation On Gypsy Moth Mating Success, Ksenia S. Onufrieva, Kevin W. Thorpe, Andrea D. Hickman, Patrick C. Tobin, Donna S. Leonard, E. Anderson Roberts

United States Department of Agriculture, Forest Service / University of Nebraska-Lincoln: Faculty Publications

Several integrated pest management programs rely on the use of mating disruption tactics to control insect pests. Some programs specifically target non-native species, such as the gypsy moth, Lymantria dispar (L.) (Lepidoptera: Lymantriidae).We evaluated SPLAT ® GM, a new sprayable formulation of the gypsy moth sex pheromone disparlure, for its ability to disrupt gypsy moth mating. The study was conducted in 2006, 2007, and 2008 in forested areas in Virginia, USA. Mating success of gypsy moth females was reduced by >99% and male moth catches in pheromone-baited traps by >90%, in plots treated with SPLAT ® GM at dosages ranging …

Patch Selection By Wintering White-Tailed Deer : Consequences For Eastern Hemlock Regeneration At Local And Landscape Scales, Jill Christine Witt

Dissertations, Master's Theses and Master's Reports - Open

Tsuga canadensis (eastern hemlock) is a highly shade-tolerant, late-successional, and long-lived conifer species found throughout eastern North America. It is most often found in pure or nearly pure stands, because highly acidic and nutrient poor forest floor conditions are thought to favor T. canadensis regeneration while simultaneously limiting the establishment of some hardwood species with greater nutrient requirements. Once a common species, T. canadensis is currently experiencing widescale declines across its range. The hemlock woolly adelgid (Adelges tsugae) is decimating the population across its eastern distribution. Across the Upper Great Lakes region, where the adelgid is currently being …