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Articles 31 - 60 of 356
Full-Text Articles in Life Sciences
Bulletin No. 30: Native Shrubs For Landscaping, Sally L. Taylor, Glenn D. Dreyer, William A. Niering
Bulletin No. 30: Native Shrubs For Landscaping, Sally L. Taylor, Glenn D. Dreyer, William A. Niering
Bulletins
No abstract provided.
Osmophores Of Stanhopea (Orchidaeceae), William Louis Stern, Kenneth J. Curry, Alec M. Pridgeon
Osmophores Of Stanhopea (Orchidaeceae), William Louis Stern, Kenneth J. Curry, Alec M. Pridgeon
Faculty Publications
Species of the Neotropical orchid genus Stanhopea produce a fragrance comprising terpenoids and aromatics which attracts euglossine bee pollinators. The secretory tissue, called an osmo- phore, is located in the adaxial region of a sac formed near the proximal portion of the floral lip. This region is easily recognized in Stanhopea oculata and S. wardii because it is papillate. The osmophore in these two species includes all the cells of the papillae and those directly below, that grade into fundamental tissue. Osmophore cells are more densely cytoplasmic than cells in the adjacent tissue. Numerous amyloplasts and mitochondria are seen in …
Humulus Lupulus L., John E. Ebinger
The Isolation And Identification Of Filamentous Fungi From Distribution Systems, Ground Water, Cisterns And Hemodialysis Water, Tammy J. Liles
The Isolation And Identification Of Filamentous Fungi From Distribution Systems, Ground Water, Cisterns And Hemodialysis Water, Tammy J. Liles
Morehead State Theses and Dissertations
A thesis presented to the faculty of the College of Arts and Sciences at Morehead State University in partial fulfillment of the requirements for the Degree of Master of Science in Biology by Tammy J. Liles on August 18, 1987.
Phyla Lanceolata (Michx.) Greene, L. Horton
Climate Of The Ord River Irrigation Area Western Australia, Implications For Crop Production, Rob J. Delane
Climate Of The Ord River Irrigation Area Western Australia, Implications For Crop Production, Rob J. Delane
Division of Plant Research : Technical Report Series
Management should be aimed at early planting to take advantage of higher soil and air temperatures, promoting rapid canopy closure, high final dry matter production and earlier calendar maturity. This will aid in attaining high yields, good grain quality, and low risk of harvesting delays or crop damage due to rain. However, early dry season planting is hindered by late maturation of some wet season crops, and excessive weed growth and slow soil drying following the wet season. The development (or adaption) of improved crop rotations, improved land utilisation and reduced tillage techniques will likely bring forward dry season planting …
Distribution Of Vertebrates Of The Bighorn Canyon National Recreation Area, Stanley H. Anderson, Wayne A. Hubert, Craig Patterson, Alan J. Redder, David Duvall
Distribution Of Vertebrates Of The Bighorn Canyon National Recreation Area, Stanley H. Anderson, Wayne A. Hubert, Craig Patterson, Alan J. Redder, David Duvall
Great Basin Naturalist
During a survey of the vertebrates in the Bighorn Canyon National Recreation Area, 46 mammal, 210 bird, 9 reptile, 5 amphibian, and 28 fish species were found. Habitat structure and moisture were two environmental variables associated with species numbers across this 1,820-ha area. Eight distinct habitats were evaluated. In coniferous forests, 27% of the birds and 54% of the mammals were observed. Sagebrush/grasslands and upland shrublands were very arid and had relatively few vertebrates. Five introduced game birds occurred in sagebrush habitat. Riparian and wetland habitats had the largest number of unique vertebrates, 38 and 77 respectively. The establishment of …
Phyla Lanceolata (Michx.) Greene, John E. Ebinger
Phyla Lanceolata (Michx.) Greene, John E. Ebinger
Specimens by Name
No abstract provided.
Samolus Parviflorus Raf., John E. Ebinger
Acer Negundo L., John E. Ebinger
Abundance And Distribution Of Herbaceous Angiosperms In Grass-Sedge Marshes Of West-Central Florida: The Effect Of Seasonal Water-Level Fluctuation, Pamela S. Botts
Abundance And Distribution Of Herbaceous Angiosperms In Grass-Sedge Marshes Of West-Central Florida: The Effect Of Seasonal Water-Level Fluctuation, Pamela S. Botts
USF Tampa Graduate Theses and Dissertations
Grass-sedge marshes in west-central Florida were studied to determine the abundances and distributions of herbaceous angiosperms. Cluster analysis, reciprocal averaging, and a biotic boundaries technique were used to analyze the relationship between community composition and depth within the marsh. Shallow areas were dominated by Rhynchospora filifolia, Dichanthelium sabulorum, and Rhynchospora cephalantha. Abundances of the species fluctuated seasonally and varied between marshes. Deep areas of individual marshes differed markedly from shallow areas and from each other. A deep, well-drained marsh supported a monospecific stand of Juncus repens, while a less deep, but poorly drained marsh had a …
Acer Saccharinum L., John E. Ebinger
Acer Saccharinum L., John E. Ebinger
Fraxinus Pennsylvanica Marsh., John E. E. Ebinger
Fraxinus Pennsylvanica Marsh., John E. E. Ebinger
Specimens by Name
No abstract provided.
Morus Alba Var. Alba, John E. Ebinger
Vitis Riparia Michx., John E. Ebinger
Forestiera Acuminata (Michx.) Poir., John E. Ebinger
Forestiera Acuminata (Michx.) Poir., John E. Ebinger
Specimens by Name
No abstract provided.
The Prairie Naturalist Volume 19, No.2. June 1987
The Prairie Naturalist Volume 19, No.2. June 1987
The Prairie Naturalist
Paul B. Kannowski, Editor
Nikki R. Seabloom, Assistant Editor
Douglas H. Johnson, Book Review Editor
TABLE OF CONTENTS
WESTERN SNOWBERRY COMMUNITY STRUCTURE IN SOUTH CENTRAL NORTH DAKOTA ▪ D. R. Kirby and T. A. Ransom-Nelson
LIFE-FORMS AND GEOGRAPHIC AFFINITIES OF THE SOUTHEASTERN NORTH DAKOTA FLORA ▪ G. J. Seiler and W. T. Barker
THE EFFECT OF BURNING AND INSECT HERBIVORY ON SEED PRODUCTION OF TWO PRAIRIE FORBS ▪ M. A. Davis, K. M. Lemon, and A. M. Dybvig
CANVASBACK NESTING ON MAN-MADE ISLANDS IN MONTANA ▪ D. M. Prellwitz
CHRISTMAS BIRD COUNTS FOR NORTH DAKOTA - 1986 ▪ R. N. …
Field Method For Describing Root Activity Using Stable Strontium As A Tracer, Michael Aaron Krstich
Field Method For Describing Root Activity Using Stable Strontium As A Tracer, Michael Aaron Krstich
Doctoral Dissertations
Stable Sr was evaluated for use as a tracer for characterizing root growth or root activity of field-grown soybeans (Glycine max (L.) Merr.). Root activity is defined in this study as the absorption of Sr with subsequent accumulation of Sr in the trifoliates. Previous research had established that the amount of Sr absorbed was directly and positively correlated with total root length and root weight in the zone of tracer placement in the soil. A 0.138 mole ratio of Sr(OOCCh3)2.0.5H2O to SrCl2.6H2O, containing 0.068g Sr ml-1 …
Dryland Maize Development And Yield Resulting From Tillage And Nitrogen Fertilization Practices, Wallace Wilhelm, James S. Schepers, M. L. Mielke, John W. Doran, James R. Ellis, Walter W. Stroup
Dryland Maize Development And Yield Resulting From Tillage And Nitrogen Fertilization Practices, Wallace Wilhelm, James S. Schepers, M. L. Mielke, John W. Doran, James R. Ellis, Walter W. Stroup
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
Conservation tillage ( 7 30% residue cover) has proven to be very effective in reducing runoff and erosion and in increasing soil water storage. In dryland cropping situations, the latter fact should result in a greater yield potential for conservation than for conventional tillage. In practice, however, this theoretical advantage has not consistently realized. The objective of this study was to determine the influence of tillage and N-fertilization management on growth and yield of maize (Zea mays L.) under dryland conditions in the western Corn Belt (U.S.A.). The experiment was conducted from 1977 through 1983 on a Crete-Butler silty …
Verbena Bonariensis L., R. Dale Thomas
Lysimachia Lanceolata Walter, R. Dale Thomas
Fraxinus Pennsylvanica Marsh., John E. E. Ebinger
Fraxinus Pennsylvanica Marsh., John E. E. Ebinger
Specimens by Name
No abstract provided.
Fraxinus Americana L., R. Dale Thomas
Viola Pratincola Greene, L. Horton
Rise To Power Of Senator Joseph R. Mccarthy: Reflections Of The Cold War Mccarthy Era In American Film, Scott Lainer
Rise To Power Of Senator Joseph R. Mccarthy: Reflections Of The Cold War Mccarthy Era In American Film, Scott Lainer
Honors Theses
The common bond between much of the film industry and Joseph McCarthy was insecurity and the drive for national approval. If one grasps the specific characteristics of McCarthy the man, and the methods of these politically "inspired" movies, we can to better place the period into context and acknowledge the fact that, if the citizenry is not aware, and is again caught by an ever-building wave of trickle down sentiment, the 1950s might not prove to be an isolated period in American history. Insecurity was not a fifties novelty. It still exists, and could potentially escalate anti-Communist policy and sentiment …
Influence Of Prestress Environment On Annual Bluegrass Heat Tolerance, Dennis L. Martin, David J. Wehner
Influence Of Prestress Environment On Annual Bluegrass Heat Tolerance, Dennis L. Martin, David J. Wehner
Office of the Dean (CAFES) Scholarship
Annual bluegrass (Poa annua L.) turf quality is reduced during periods of high temperature. To predict heat stress injury and develop improved prestress maintenance practices, an understanding of the seasonal variation in annual bluegrass heat tolerance and the influence of soil moisture on heat tolerance is crucial. Annual bluegrass growing in the field on a Drummer silty clay loam (fine silty, mixed, mesic Typic Haplaquolls) was sampled on 23 dates over two growing seasons and brought to a laboratory for exposure to high temperature. Prestress environmental conditions (air and soil temperature, soil matric potential, plant water potential, daylength, rainfall and …
Effects Of Planting Date On Development Of Net Blotch Epidemics In Winter Barley In Pennsylvania, Leslie M. Delserone, H. Cole Jr.
Effects Of Planting Date On Development Of Net Blotch Epidemics In Winter Barley In Pennsylvania, Leslie M. Delserone, H. Cole Jr.
UNL Libraries: Faculty Publications
The influence of planting date on fall and spring net blotch epidemics (caused by Pyrenophora teres) was evaluated with the winter barley cultivar Pennrad. Experiments were conducted in Centre County, Pennsylvania, in 1982 and 1983 and in Lancaster County, Pennsylvania, in 1983. The three planting dates evaluated corresponded to the recommended date as well as dates I wk earlier and later than recommended for each specific location. Planting date had a significant influence on fall net blotch epidemics, with the greatest and least disease severities observed in the earliest and latest plantings, respectively. When spring environmental conditions were warm …
The Effect Of Three Tillage Systems On Bulk Density And Porosity Of A Pembroke And A Beasley Soil After Three Years, Kenneth L. Wells, John H. Grove
The Effect Of Three Tillage Systems On Bulk Density And Porosity Of A Pembroke And A Beasley Soil After Three Years, Kenneth L. Wells, John H. Grove
Agronomy Notes
Many grain producers in Kentucky use a 3 crop in 2 year rotation of corn followed by small grain-soybeans, and commonly no-till the soybeans and corn in order to intensively use sloping land for continuous grain production. Because of the intensity of machinery traffic in this system, growers are concerned that continuous no-till management may cause compaction, and that such fields may need occasional primary tillage. In order to obtain' information regarding things situation, we conducted a test for 3 years on the farm of' Philip Lyvers, in Marion County, Kentucky, in a field which was being used in a …
Sfa Gardens Newsletter, May 1987, Sfa Gardens, Stephen F. Austin State University
Sfa Gardens Newsletter, May 1987, Sfa Gardens, Stephen F. Austin State University
SFA Gardens Newsletters
No abstract provided.