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Stephen F. Austin State University

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Articles 721 - 750 of 797

Full-Text Articles in Forest Sciences

Endoparasitic Nematodes Of Ips Bark Beetles In Eastern Texas, Jack E. Coster, William Hoffard Jan 1976

Endoparasitic Nematodes Of Ips Bark Beetles In Eastern Texas, Jack E. Coster, William Hoffard

Faculty Publications

East Texas Ips species contained 4 specific internal nematodes; I. avulsus (Eichhoff) were infected with Parasitylenchus avulsi Massey, I. grandicollis (Eichhoff) with Contortylenchus grandicolli (Massey) Rlihm, and I. calligraphus (Germar) with Contortylenchus elongatus (Massey) Nickle and Parasitaphelenchus sp. In all 3 bark beetles, infection peaked in July and August when 50-58% of adults from naturally attacked pine trees contained nematodes. Infection levels declined to 20-30% during January and February. Infected I. grandicollis and I. avulsus adults appeared lighter in color than noninfected adults. Nematode infection apparently delayed emergence of both sexes of I. grandicollis and females of I. avulsus. In …

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Percent Accuracy By Crown Closure Classes Of Woodland Stands Mapped From Skylab-4 Photography And Landsat-1 Imagery, Roger Dale Goldsmith Aug 1975

Percent Accuracy By Crown Closure Classes Of Woodland Stands Mapped From Skylab-4 Photography And Landsat-1 Imagery, Roger Dale Goldsmith

Electronic Theses and Dissertations

LANDSAT-l imagery and satellite photography have been utilized for land-use mapping. This study investigated the correlation between woodland stands mapped and their percent crown closure using LANDSAT-l imagery and Skylab-4 photography. On the basis of percent accuracy of crown closure classes mapped or not mapped, Skylab-4 photography proved superior over LANDSAT-l imagery for mapping woodlands

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Notes On Nosodendron Californicum Horn On Slime Fluxes Of Grand Fir, Abies Grandis (Douglas) Lindley, In Northern Idaho (Coleoptera: Nosodendridae), David Kulhavy, Harold Osborne Jan 1975

Notes On Nosodendron Californicum Horn On Slime Fluxes Of Grand Fir, Abies Grandis (Douglas) Lindley, In Northern Idaho (Coleoptera: Nosodendridae), David Kulhavy, Harold Osborne

Faculty Publications

Adults and larvae of Nosodendron californicum Horn were observed and collected from sap exudations on and adjacent to frost cracks of Abiesgrandis (Douglas) Lindley. This is the first published record of this species in Idaho and east of the Cascade Range in the Pacific Northwest.

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Effects Of Land Disposal Of Pulp Mill Effluents On Plant Nutrient Uptake And Element Balance, Joseph B. Schwarzback May 1974

Effects Of Land Disposal Of Pulp Mill Effluents On Plant Nutrient Uptake And Element Balance, Joseph B. Schwarzback

Electronic Theses and Dissertations

An analysis of the soil and plant tissues was undertaken to ascertain the effect that land irrigation with pulp mill effluent has on nutrient uptake and element balance of tree seedlings. Results show that the effluent significantly increased the sodium content of both soil and tissue; however, these levels fell far below the level necessary to become detrimental to plant life, soil chemistry and soil structure. There was evidence that the increase of elements from the effluent provided positive effects in growth and plant health. There was no evidence of sodium toxicity or calcium starvation. Evidence clearly points out the …

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Texas Forestry Paper No. 24, Ray R. Hicks Jr. Apr 1974

Texas Forestry Paper No. 24, Ray R. Hicks Jr.

Texas Forestry Papers, No. 1-29, 1970-1976

"Comparisons of seedlings from east texas loblolly, shortleaf and suspected hybrid pines"

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Texas Forestry Paper No. 25, Leonard F. Burkart, Jorge Cano-Capri Apr 1974

Texas Forestry Paper No. 25, Leonard F. Burkart, Jorge Cano-Capri

Texas Forestry Papers, No. 1-29, 1970-1976

"Tension wood in southern red oak quercus falcata michx."

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Texas Forestry Paper No. 26, Robert D. Baker, David V. Smith Apr 1974

Texas Forestry Paper No. 26, Robert D. Baker, David V. Smith

Texas Forestry Papers, No. 1-29, 1970-1976

"Aerial photograph use in industrial forest management in the south, 1970 and 1974"

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Improving Height/Age Data From Stem Analysis, J. David Lenhart Jan 1974

Improving Height/Age Data From Stem Analysis, J. David Lenhart

Faculty Publications

No abstract provided.

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Needle Variation In Loblolly Pine From Mesic And Xeric Seed Sources, M. Victor Bilan, T.A. Knauf Jan 1974

Needle Variation In Loblolly Pine From Mesic And Xeric Seed Sources, M. Victor Bilan, T.A. Knauf

Faculty Publications

Anatomical modifications in protective layers and stomatal characteristics of needles which would have moisture conserving effects were found in 2-yr-old seedlings of 1oblolly pines of the Bastrop County, Texas, provenance. Most of these modifications were absent from needles of 16-yr-old trees of the same provenance. Forest Sci. 20:88-90.

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Texas Forestry Paper No. 23, J. J. Stransky Jun 1973

Texas Forestry Paper No. 23, J. J. Stransky

Texas Forestry Papers, No. 1-29, 1970-1976

"Alternatives in southern wildlife-timber management"

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Texas Forestry Paper No. 22, Ellis V. Hunt Jr. May 1973

Texas Forestry Paper No. 22, Ellis V. Hunt Jr.

Texas Forestry Papers, No. 1-29, 1970-1976

"Some site, stand, and tree effects on diameter growth of east texas pine trees"

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Texas Forestry Paper No. 21, J. David Lenhart, J. Robert Hasness, Dwight R. Hicks, David M. Hyink, Seymour I. Somberg May 1973

Texas Forestry Paper No. 21, J. David Lenhart, J. Robert Hasness, Dwight R. Hicks, David M. Hyink, Seymour I. Somberg

Texas Forestry Papers, No. 1-29, 1970-1976

"Estimating cubic foot volume, green weight, or dry weight per acre of planted loblolly pine using variable-radius-plot cruising techniques"

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Criteria For Recreation Site Selection On Flood Control Reservoirs-Case Studies, Kenneth B. Mclaughlin May 1973

Criteria For Recreation Site Selection On Flood Control Reservoirs-Case Studies, Kenneth B. Mclaughlin

Electronic Theses and Dissertations

Stephen F. Austin State University was awarded a contract in August 1971 to select the 1,200 acres best suited for recreation area development on three proposed flood control reservoirs. At that time, there was no central publication which could be used as a guide for such a project. This thesis was written to help correct this situation. The nine factors that were used in initial site selection are soils, topography, access, wind, vegetation, land ownership, distribution of the sites, bridges and open-water and cove locations. Once the sites were selected, they were evaluated and assigned priorities for development according to …

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Texas Forestry Paper No. 20, Don R. Taylor, M. Victor Bilan Mar 1973

Texas Forestry Paper No. 20, Don R. Taylor, M. Victor Bilan

Texas Forestry Papers, No. 1-29, 1970-1976

"Strip clearcutting to regenerate east texas pines"

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Texas Forestry Paper No. 19, Kenneth W. Shaw, Seymour I. Somberg Feb 1973

Texas Forestry Paper No. 19, Kenneth W. Shaw, Seymour I. Somberg

Texas Forestry Papers, No. 1-29, 1970-1976

"Ad valorem taxes on timberland in northeast texas"

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Texas Forestry Paper No. 18, J. David Lenhart Jan 1973

Texas Forestry Paper No. 18, J. David Lenhart

Texas Forestry Papers, No. 1-29, 1970-1976

"Green and dry weight yields for unthinned old-field loblolly pine plantations in the interior west gulf coastal plain"

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Forestry Bulletin No. 25: Silviculture Of Southern Bottomland Hardwoods, Laurence C. Walker, Kenneth G. Watterson Sep 1972

Forestry Bulletin No. 25: Silviculture Of Southern Bottomland Hardwoods, Laurence C. Walker, Kenneth G. Watterson

Forestry Bulletins No. 1-25, 1957-1972

"The potential of southern bottomland hardwood types is clear, for they, along with the cypress, occupy about 37 million acres and compromise more than half of the hardwood stumpage in the south."

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The Development And Testing Of A Fire Simulator Exercise, Don A. Clymer Aug 1972

The Development And Testing Of A Fire Simulator Exercise, Don A. Clymer

Electronic Theses and Dissertations

A forest fire simulation exercise was developed for the purpose of supplementing forest fire instruction, presenting students with decision-making situations encountered on forest fires, and introducing them to the fire simulator at Stephen F. Austin State University. The final exercise was developed after preliminary work and development of a more simple exercise. The problems with equipment, recruitment of simulator personnel, and the development and execution of the simulator exercises are discussed. Scheduling adequate time for practice, and providing adequate personnel training were found to be the major obstacles in simulator use. Future fire simulator use at SFA will be dependent …

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Texas Forestry Paper No. 17, David M. Hyink, J. David Lenhart, Seymour I. Somberg Jun 1972

Texas Forestry Paper No. 17, David M. Hyink, J. David Lenhart, Seymour I. Somberg

Texas Forestry Papers, No. 1-29, 1970-1976

"Ovendry weights for loblolly pine trees in old-field plantations in the interior west gulf coastal plain"

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Texas Forestry Paper No. 16, Dwight R. Hicks, J. David Lenhart, Seymour I. Somberg Jun 1972

Texas Forestry Paper No. 16, Dwight R. Hicks, J. David Lenhart, Seymour I. Somberg

Texas Forestry Papers, No. 1-29, 1970-1976

"Merchantable green weights for loblolly pine trees in old-field plantations in the interior west gulf coastal plain"

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Texas Forestry Paper No. 15, Harry V. Wiant Jr., Paul G. Rung Jr., William T. Sandeen Jun 1972

Texas Forestry Paper No. 15, Harry V. Wiant Jr., Paul G. Rung Jr., William T. Sandeen

Texas Forestry Papers, No. 1-29, 1970-1976

"Estimating volume of southern pines using tarif and standard volume tables"

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Texas Forestry Paper No. 14, J. David Lenhart Jun 1972

Texas Forestry Paper No. 14, J. David Lenhart

Texas Forestry Papers, No. 1-29, 1970-1976

"Cubic-foot yields for unthinned old-field loblolly pine plantations in the interior west gulf coastal plain"

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The Southern Pine Beetle, Dendroctonus Frontalis Zimm, 1961-1971, Jack E. Coster Jun 1972

The Southern Pine Beetle, Dendroctonus Frontalis Zimm, 1961-1971, Jack E. Coster

eBooks

In the last decade, since the appearance of the comprehensive reviews of southern pine beetle (SPB), Dendroctonus frontalis Zimm. (Coleoptera :Scolytidae ) *, literature by Thatcher (1960) and Dixon and Osgood (1961), much research progress on the insect has been realized. This review condenses reports of research on the insect published since 1961.

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Forestry Bulletin No. 23: Timber Sales Contracts For Latin America, Seymour I. Somberg Apr 1972

Forestry Bulletin No. 23: Timber Sales Contracts For Latin America, Seymour I. Somberg

Forestry Bulletins No. 1-25, 1957-1972

An analysis of timber sales contracts in Latin America, in consideration of proposals, forms, provisions and contributions.

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Evaluation Of Four Systemic Insecticides Against The Cottonwood Twig Borer, Jack E. Coster, Robert G. Merrifield, R.A. Woessner Apr 1972

Evaluation Of Four Systemic Insecticides Against The Cottonwood Twig Borer, Jack E. Coster, Robert G. Merrifield, R.A. Woessner

Faculty Publications

No abstract provided.

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Forestry Bulletin No. 24: Silviculture And Management Of Teak, K. Kadambi Mar 1972

Forestry Bulletin No. 24: Silviculture And Management Of Teak, K. Kadambi

Forestry Bulletins No. 1-25, 1957-1972

"Teak is the principal timber tree of Peninsular India, Burma, Indonesia and Thailand and one of the most important timbers of the world. It has been planted extensively in warm climates throughout the world."

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Forestry Bulletin No. 22: Silviculture Of Southern Upland Hardwoods, Laurence C. Walker Jan 1972

Forestry Bulletin No. 22: Silviculture Of Southern Upland Hardwoods, Laurence C. Walker

Forestry Bulletins No. 1-25, 1957-1972

"Upland hardwood types occur throughout the forests of the southern United States. Sometimes deciduous species intermingle with pines to form mixed conifer-broadleaf types; other times hardwood types are interspersed with pine types; depending upon soil, physiography, past land use, and fire."

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Texas Forestry Paper No. 11, J. Robert Singer, William T. Miller Jan 1972

Texas Forestry Paper No. 11, J. Robert Singer, William T. Miller

Texas Forestry Papers, No. 1-29, 1970-1976

"A reconnaissance level system for planning and environmental impact analysis"

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Texas Forestry Paper No. 13, Ray R. Hicks Jr., Johnny C. Jones, Michael H. Cotton Jan 1972

Texas Forestry Paper No. 13, Ray R. Hicks Jr., Johnny C. Jones, Michael H. Cotton

Texas Forestry Papers, No. 1-29, 1970-1976

"Pollen development and release in loblolly and shortleaf pine near nacogdoches, texas, 1971"

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Texas Forestry Paper No. 12, J. Robert Hasness, J. David Lenhart Jan 1972

Texas Forestry Paper No. 12, J. Robert Hasness, J. David Lenhart

Texas Forestry Papers, No. 1-29, 1970-1976

"Cubic-foot volumes for loblolly pine trees in old-field plantations in the interior west gulf coastal plain"

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