Forest Sciences Commons^™

Eastern Redbud (Cercis Canadensis), Nebraska Forest Service

Nebraska's Landscape Tree Information

Eastern Redbud (Cercis canadensis) is one of the first trees to flower in the spring of the year. It is a native to the eastern and central hardwood forest regions and is found in most of Iowa and Missouri and in the southeast part of Nebraska.

Norway Spruce (Picea Abies), Nebraska Forest Service

Nebraska's Landscape Tree Information

Norway Spruce (Picea abies) is a native of Norway and northern Europe as the name implies. When Europeans first began to settle the new world (now known as the United States) they brought all their worldly belongings with them. This sometimes included trees from their homeland so that they could still remain connected to their homeland. Often times, that tree was a Norway Spruce. It is not unusual to travel rural roads in the northeastern part of the United States and see two Norway Spruce standing side by side either in front of an old farmhouse or alone. …

Red Maple (Acer Rubrum), Nebraska Forest Service

Nebraska's Landscape Tree Information

The northeastern United States is well known for fall color and perhaps the tree that stands out the most is the Red Maple (Acer rubrum). Maples in general produce some of the most striking colors in fall. But red maple lives up to its name with brilliant red colors.

Northern Red Oak (Quercus Rubra), Nebraska Forest Service

Nebraska's Landscape Tree Information

The Northern Red Oak (Quercus rubra) has a national reputation. Oak was selected by the National Arbor Day Foundation as the National Tree for the United States and a northern red oak was planted in Washington, DC to commemorate the vote in 2001. Oaks grow in every state of the Union. Red Oak is possibly the most popular of the oaks, especially in the Nebraska–Iowa region. Bur Oak may run a strong second. Quercus means oak in Latin and rubra means red. Red Oak is native from the east coast all the way to the center of the …

Serbian Spruce (Picea Omorika), Nebraska Forest Service

Nebraska's Landscape Tree Information

There are several kinds of spruce that are planted in Nebraska. The most common are Colorado, Norway, and White (sometimes referred to as Black Hills). The Serbian Spruce (Picea omorika) is a new comer to the spruce line up and there is not a great deal of information about the tree. It has been planted in the past but it is now becoming a little more common as we look for more diversity in our evergreen plantings.

Serviceberry (Amelanchier Sp.), Nebraska Forest Service

Nebraska's Landscape Tree Information

Serviceberry (Amelanchier sp.), is a small forest tree that gives the promise of spring. It is one of the first to bloom with delicate white flowers. There are many varieties of serviceberry including Allegheny serviceberry (Amelanchier laevis), Autumn Brilliance Apple serviceberry (Amelanchier x grandiflora 'Autumn Brilliance'), Downy serviceberry (Amelanchier arborea), and Saskatoon serviceberry (Amelanchier alnifolia). There are others but these seem to be the most popular in the Nebraska/Iowa area.

Sugar Maple (Acer Saccharum), Nebraska Forest Service

Nebraska's Landscape Tree Information

Sugar Maple (Acer saccharum) is one of the most well known of the maple family. It is native of southern Canada and the northeastern United States. Its natural range goes as far west as the eastern edge of North Dakota, South Dakota, Kansas, and Oklahoma. The tree is not native to Nebraska. Sugar Maple is the state tree of both Vermont and Wisconsin.

Swamp White Oak (Quercus Bicolor), Nebraska Forest Service

Nebraska's Landscape Tree Information

Oak is one of the most common trees in the United States. Indeed there is a species of oak that grows in every state. As a matter of fact there are over 80 species of oak growing in North America. Here in Nebraska the list is a little more limited but surprisingly long. The Nebraska Statewide Arboretum and the Nebraska Forest Service list the following oaks for planting in Nebraska: Sawtooth Oak, White Oak, Swamp White Oak, Scarlet Oak, Shingle Oak, Bur Oak, Chinkapin Oak, Pin Oak, Chestnut Oak, English Oak, Red Oak, Shumard Oak, Black Oak, Blackjack Oak, and …

American Sycamore (Platanus Occidentalis), Nebraska Forest Service

Nebraska's Landscape Tree Information

A tree that can warm your heart even on the coldest day of winter is the American Sycamore (Platanus occidentalis). American sycamore is also known as American Planetree, Buttonwood, and Buttonball tree. American Sycamore is native in 36 states including Nebraska. You can go to just about any eastern Nebraska community and find at least a few larger sycamore trees. On farms it was (and still is) often planted for shade.

Japanese Tree Lilac (Syringa Reticulata), Nebraska Forest Service

Nebraska's Landscape Tree Information

The common lilac shrub has long been a staple in both the amateur and professional landscaper’s plant palette. Its dark green leaves blending with its fragrant lavender flowers are a favorite of springtime landscapes. Lilac lovers prefer the multi-stemmed shrub. But there are those that prefer the single stem, more formal look. The Japanese Tree Lilac fulfills that need

White Fir (Abies Concolor), Nebraska Forest Service

Nebraska's Landscape Tree Information

White Fir (Abies concolor) is a tree that has been planted in Nebraska for some time. It is becoming more popular as an alternative to some of the pines that are beginning to show long term problems. White Fir is also called Concolor Fir using its Latin name. The Latin name, Abies concolor, means tall or rising tree with needles of one color.

Eastern White Pine (Pinus Strobus), Nebraska Forest Service

Nebraska's Landscape Tree Information

An often-overlooked evergreen in Nebraska is the Eastern White Pine (Pinus strobus). Eastern White Pine is native to the northeastern and north-central part of the United States and it grows to be a very large evergreen tree sometimes reaching heights of more than 100 feet. The tallest White Pine in the United States is 167 feet tall and is located in Michigan. White Pine is the state tree of both Maine and Michigan. In the early days of settlement in the United States, White Pine was used as masts for sailing vessels. Its long straight stem was much …

Nebraska’S Forests: Resource Bulletin Nrs-27, Dacia M. Meneguzzo, Brett J. Butler, Susan J. Crocker, David E. Haugen, W. Keith Moser, Charles H. (Hobie) Perry, Barry T. (Ty) Wilson, Christopher W. Woodall

Nebraska Forest Service: Publications

Results of the first annual inventory of Nebraska’s forests (2001-05) show an estimated 1.24 million acres of forest land; 1.17 million acres meet the definition of timberland. Softwood forest types account for one-third of all forest land area, with ponderosa pine being the most prevalent type. Hardwood forest types comprise 58 percent of Nebraska’s forest land. Elm/ash/cottonwood is the predominant forest-type group in the State, accounting for 26 percent of all forest land area. Livetree volume on timberland increased from 1.3 to 1.8 billion cubic feet between the 1994 and 2005 inventories. This report includes information on forest attributes, forest …

Nebraska’S Forests, Dacia M. Meneguzzo, Brett J. Butler, Susan J. Crocker, David E. Haugen, W. Keith Moser, Charles H. Perry, Barry T. Wilson, Christopher W. Woodall

Nebraska Forest Service: Publications

Highlights; Background; Forest Features; Forest Health Indicators; Forest Products; Data Sources and Techniques; Literature Cited

Pruning Trees, David Mooter

Nebraska Forest Service: Publications

Pruning is one of the most important tree maintenance practices. Over the years, the way in which we, as foresters, have approached pruning has changed dramatically. Today pruning is a science that, if not done properly, can be very damaging to a tree.

Here are some tips that may be of help to you before you take the saw to the tree. First, large tree pruning can be very dangerous work. Even the most highly skilled arborists have been seriously injured while pruning a large tree. This is especially true if climbing is involved. It is best to leave major …

Second Report Of The North Dakota Bird Records Committee: 2002-2003, Dan Svingen, Ron E. Martin

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

Since 1979, North Dakota's bird records committee has collected, evaluated, and archived documentations of rare bird occurrences in the state. In 2002 and 2003 this committee resolved 202 rare bird records. On the basis of this review, seven species were added to the North Dakota state bird list: common crane (Grus grus) , lesser black-backed gull (Larus juscus), acorn woodpecker (Melanerpes jormicivorus), plumbeous vireo (Vireo plumbeus), Carolina wren (Thryothorus ludovicianus), prairie warbler (Dendroica discolor), and Cassin's finch (Carpodacus cassinii). Evidence was accepted that established Northern saw-whet …

Total Protein Content And Sds-Page In Pear Scions Grafted On Quince A And Pear Seedling Rootstocks, Hati̇ce Gülen, Ali̇ Küden, Joseph Postman, Rajeev Arora

Turkish Journal of Agriculture and Forestry

This study was conducted to investigate the effects of various rootstocks on the total soluble protein content of pear scions, and to detect a polypeptide as a marker that would be associated with pear/quince compatibility/incompatibility. Bark samples were collected from 5 year-old pear scions grafted on QA and pear seedling rootstocks (PS). Total soluble protein contents of bark tissues of 4 pear scions, Passa Crassana (PC), Beurre Hardy (BH), Beurre Bosc (BB) and Bartlett (BT), were determined using the Bradford assay. Protein profiles of bark tissues taken from the graft combinations were determined using SDS-PAGE. In general, the scions grafted …

Genetics And Breeding For Durable Resistance To Leaf And Stripe Rusts In Wheat, Ravi Prakash Singh, Julio Huerta-Espino, Harindra Manilal William

Turkish Journal of Agriculture and Forestry

Singh, R.P., J. Huerta-Espino and H.M. William. 2004. Genetics and breeding for durable resistance to leaf and stripe rusts in wheat. Turk. J. Agric. For. 28: xxx-xxx. Yellow (or stripe) and leaf (or brown) rusts, caused by Puccinia striiformis and P. triticina, respectively, are important diseases of wheat worldwide. Growing resistant cultivars is the most economical and environmentally safe control measure and has no cost to growers. Wheat (Triticum aestivum) cultivars that have remained resistant for a long time, or in other words carry durable or race-nonspecific resistance, are known to occur. Inheritance of resistance indicates that these cultivars often …

A New Method For The Detection Of Minor Populations Of Citrus Tristeza Virus Strains Infecting Single Citrus Trees, Hani̇fe Genç

Turkish Journal of Agriculture and Forestry

Fifteen different biologically important citrus tristeza virus (CTV) isolates (B14, B15, B23, B31, B52, B57, T36, D9, D10, D11, D12, D15, D16, D20 and D32) were tested using strain-specific biotin-labeled oligonucleotide probes. Coat protein genes (CPGs) of the samples were amplified by PCR, and the products were hybridized with probes (direct PCR hybridization (DPH)) and sequenced. In the DPH, all samples having probe 0 reactions were infected with CTV. Some isolates giving more than one specific probe reaction showed that they may be infected by mixtures of different CTV strains. In order to investigate this, CPGs from individual bacterial colonies …

The Effects Of Joint Forms (Shape) And Dimensions On The Strengths Of Mortise And Tenon Joints, Ali̇ Naci̇ Tankut, Nurgül Tankut

Turkish Journal of Agriculture and Forestry

Until recently, detailing of joints was largely a matter of tradition, based on trial and error methods. However, in the engineering design of furniture, it is necessary for designers to create joints with a specified strength. This study was undertaken accordingly, to obtain the strength of round tenon/round mortise, rectangular tenon/rectangular mortise and rectangular tenon/round mortise joints assembled under nominally identical conditions with different end configurations. In addition, each end configuration was compared at rail widths, each with 2 widths of tenon. The results showed that rectangular end mortise and tenons are about 15% stronger than both round end mortise …

Crown Radius And Diameter At Breast Height Relationships For Six Bottomland Hardwood Species, Brian Roy Lockhart, Robert C. Weih Jr., Keith M. Smith

Journal of the Arkansas Academy of Science

The relationship between a tree's crown radius and diameter at breast height (DBH) has a variety of uses including forest competition studies, tree crown densities, spacing and stocking relationships, wildlife habitat suitability models, and tree volume estimations. Estimating DBH from mean crown radius (MCR) is of interest to natural resource managers because MCR can be estimated from high resolution digital imagery using remote sensing techniques. DBH is a common tree dimensional characteristic that is used to quantify tree and stand structure. This research presents MCR/DBH and DBH/MCR relationships for boxelder (Acer negundo L.), sweet pecan (Carya illinoensis (Wang) K.Koch), sugarberry …

Interactive Effect Of Nitrogen And Boron On Cotton Yield And Fiber Quality, Özgül Görmüş

Turkish Journal of Agriculture and Forestry

This study aimed to determine the effect of application rates of N and B on cotton yield and fiber quality. Suregrow 125 (Gossypium hirsutum L.) was grown on a clay soil having an average 0.38 mg kg^{-1} B concentration. Analysis of leaf tissue taken at early bloom and before the nutrient application indicated that N and B concentrations were sufficient. Nitrogen was applied to the soil at rates of 0, 80 and 160 kg ha^{-1}, and B was applied to the foliage 3 times for totals of 0, 0.56 and 1.12 kg B ha^{-1}. Foliar-applied B significantly increased leaf blade …

International Cooperation For Winter Wheat Improvement In Central Asia: Results And Perspectives, Alexei I. Morgounov, H.-J. Braun, H. Ketata, R. Paroda

Turkish Journal of Agriculture and Forestry

Crop production in Central Asia has long history going back to 2000-3000 years BC. The farming in the past was mainly concentrated in irrigated areas along the two main river basins: AmuDarya and Syr-Darya. Wheat cultivation in Central Asia in the 20th century concentrated primarily in rainfed area. The breeding work conducted at several stations in the region was initially based on local landraces and resulted in adapted varieties. However, the breeding work was not consistent and interrupted. Since 1991 the wheat became an important crop due to food security concern and replaced cotton in some areas. The modern varieties …

Effects Of Different Tire Configurations On Tractor Performance, Sarp Korkut Sümer, Alaetti̇n Sabanci

Turkish Journal of Agriculture and Forestry

The effects of tire ply constructions (radial and bias) and tire arrangements (singles and duals on rear the axle) on tractor performance were evaluated for 2 gear levels on 2 different fields covered with wheat stubble and having different soil types, clay and sandy-loam. For this purpose, the tractor's overall efficiency, specific fuel consumption, and slip values were determined using parameters measured in the study. The results showed that the use of radial tires provided some advantages. For example, overall tractor efficiency with radial tires instead of bias tires increased by 3.44%, while specific fuel consumption decreased by 3.08% on …

Grassland And Woodland Bird Occurrence And Habitat Selection In The Prairie-Forest Transition Zone Of Minnesota, Thomas Robert Cooper

Electronic Theses and Dissertations

Numerous species of woodland and grassland nesting birds have experienced population declines in the midwestern United States. Habitat loss and habitat fragmentation are suspected to be two of the underlying causes for the population declines of woodland and grassland birds. The Minnesota Valley Wetland Management District (WMD) covers 14 counties in southeastern Minnesota in the transition zone between forested and prairie ecoregions. Little information is available relative to which birds are using grassland or woodland habitat within the WMD and how their presence or absence is related to the available habitat conditions. Therefore, my study objectives were to: 1) determine …

Vegetation And Hydrologic Influences On Carbon And Nitrogen In Subsurface Water Of A Forested Riparian Wetland, Emily B. W. Calhoon

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

Vegetation communities affect carbon and nitrogen dynamics in the subsurface water of mineral wetlands through the quality of their litter, their uptake of nutrients, root exudation and their effects on redox potential. However, vegetation influence on subsurface nutrient dynamics is often overshadowed by the influences of hydrology, soils and geology on nutrient dynamics. The effects of vegetation communities on carbon and nitrogen dynamics are important to consider when managing land that may change vegetation type or quantity so that wetland ecosystem functions can be retained. This study was established to determine the magnitude of the influences and interaction of vegetation …

Effectiveness Of A Nondestructive Evaluation Technique For Assessing Standing Timber Quality, Crystal L. Pilon

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

The research presented in this thesis was conducted to further the development of the stress wave method of nondestructively assessing the quality of wood in standing trees. The specific objective of this research was to examine, in the field, use of two stress wave nondestructive assessment techniques.

The first technique examined utilizes a laboratory-built measurement system consisting of commercially available accelerometers and a digital storage oscilloscope. The second technique uses a commercially available tool that incorporates several technologies to determine speed of stress wave propagation in standing trees.

Field measurements using both techniques were conducted on sixty red pine trees …

The Challenge Of Environmental Protection, Jennifer Mattei

Biology Faculty Publications

Connecticut is in the midst of a demographic transition to a period of lower population growth. These demographic changes will help check the pressures exerted on the state's natural resources by population growth. Water, air, soil, energy sources, food, fisheries, forests, and biodiversity are common pool resources upon which we depend in ways that transcend political boundaries. Those governing Connecticut should help turn the state into a model of how to manage natural resources by halting forest fragmentation, reducing pollution, and promoting environmental science education.

Seasonal Leaf Dynamics Across A Tree Density Gradient In A Brazilian Savanna, William A. Hoffman, Edson Rangel Da Silva Jr., Gustavo C. Machado, Sandra J. Bucci, Fabian G. Scholz, Guillermo Goldstein, Frederick C. Meinzer

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

Interactions between trees and grasses that influence leaf area index (LAI) have important consequences for savanna ecosystem processes through their controls on water, carbon, and energy fluxes as well as fire regimes. We measured LAI, of the groundlayer (herbaceous and woody plants <1-m tall) and shrub and tree layer (woody plants >1-m tall), in the Brazilian cerrado over a range of tree densities from open shrub savanna to closed woodland through the annual cycle. During the dry season, soil water potential was strongly and positively correlated with grass LAI, and less strongly with tree and shrub LAI. By the end of the dry season, LAI of grasses, groundlayer dicots …

Seasonal Migration And Home Ranges Of Female Elk In The Black Hills Of South Dakota And Wyoming, Lakhdar Benkobi, Mark A. Rumble, Cynthia H. Stubblefield, R. Scott Gamo, Joshua J. Millspaugh

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

Understanding the movement and dispersion patterns of elk (Cervus elaphus) on public lands and the underlying factors that affect each will facilitate elk management and help resolve conflicts between management that benefit elk and other uses of land resources. Consequently, there is a need to identify and examine the movement and dispersion patterns of elk in the Black Hills of South Dakota and Wyoming. Our study quantified seasonal movements, determined home ranges of female elk in two areas of the Black Hills, and examined underlying factors associated with each. Elk in the northern area did not demonstrate seasonal …