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Articles 31 - 60 of 262
Full-Text Articles in Life Sciences
1974 Preliminary Report Of Kentucky Small Grain Variety Trials At Bowling Green And Lexington, Charles Tutt, Morris J. Bitzer, Verne C. Finkner
1974 Preliminary Report Of Kentucky Small Grain Variety Trials At Bowling Green And Lexington, Charles Tutt, Morris J. Bitzer, Verne C. Finkner
Agronomy Notes
Each year the small grain variety trials are conducted at Princeton, Murray, Bowling Green and Lexington. In 1974, the plots at Princeton and Murray were severely infected with a complex of diseases including Barley Yellow Dwarf, Septoria glume blotch, wheat scab and an unidentified disease in the wheat. As a result of the intensity of these diseases, the data obtained from these plots was very erratic and the results were not considered to be experimentally valid. The data obtained at Bowling Green and Lexington were quite valid and representative of the general situation in Kentucky.
Vitis Riparia Michx., John H. Gerard
Maclura Pomifera (Raf.) Schneid., Mcclain
Lysimachia Lanceolata Walter, John E. Ebinger
Acer Saccharum Marshall, Bob Holeman
Fraxinus Pennsylvanica Marsh., Bob Holeman
Samolus Valerandi L., John E. Ebinger
Lysimachia Ciliata L., John E. Ebinger
Phyla Lanceolata (Michx.) Greene, W. Mcclain
Acer Negundo L., W. Mcclain
Samolus Valerandi L., Ted Bradley
Lippia Lanceolata Michx., Bob Holeman
The Genus Hedysarum In North America, Terry Edwin Northstrom
The Genus Hedysarum In North America, Terry Edwin Northstrom
Theses and Dissertations
In North America, Hedysarum taxa extend from southern Arizona to Banks Island and from northern Alaska to Newfoundland. They exhibit a high degree of polymorphism which is usually expressed in the form of a gradient in morphological characteristics. Four species, one subspecies and four varieties are recognized, including one new combination, H. boreale ssp. boreale var. rivulare (Williams) Northstrom. Comparative anatomical and morphological studies revealed two basic patterns. Chromosome numbers of all taxa were determined. The basic chromosome number of H. alpinum, H. sulphurescens and H. occidentale is n=7. The basic chromosome number of H. boreale is n=8. Seed protein …
Morus Alba Var. Alba, Bob Holeman
A Revision Of The Astragalus Lentiginosus Complex For The State Of Utah, Carol Susan Schoener
A Revision Of The Astragalus Lentiginosus Complex For The State Of Utah, Carol Susan Schoener
Theses and Dissertations
The taxonomy and distribution of the Astragalus lentiginosus complex in Utah is presented. The nine varieties are listed and a key is provided which allows determination of the members of the complex in Utah. Each entity is discussed and illustrated. Two distribtuion maps are included for each variety, one showing the distribution in Utah and the other, the general range of the entity. The body of this work is based on the study of herbarium specimens and field observations and collection. These studies have resulted in the synonymizing of two varieties, the inclusion of another and one nomenclatural change.
Evidence Of Eutrophication In Wall Lake Barry County, Michigan, John J. Meany
Evidence Of Eutrophication In Wall Lake Barry County, Michigan, John J. Meany
Masters Theses
No abstract provided.
Some Aspects Of Vegetation Response To A Moisture Gradient On An Ephemeral Stream In Central Arizona, Deborah Ann Bloss
Some Aspects Of Vegetation Response To A Moisture Gradient On An Ephemeral Stream In Central Arizona, Deborah Ann Bloss
Theses and Dissertations
Ecological aspects of desert vegetation in relation to a moisture gradient of an ephemeral stream in central Arizona were investigated. The stream channel, flood plain and north, west, south, east facing slopes represent a moisture gradient going from most mesic to most xeric conditions. In parts of the system, vegetation from the stream channel intergraded into flood plain vegetation which in turn intergraded into slope vegetation types. In other areas there are sharp delineations between stream channel and flood plain, and between flood plain and slope. Trees and legumes preferred medium moisture habitats, while forbs, shrubs and succulents preferred the …
Metabolism Of 3-Isopropyl-4h-2,1,3-Benzothiadiazin-4-(3h)-One-2,2-Dioxide (Bentazon) In Agitated And Non-Agitated Sediment, David Cortez Gutierrez
Metabolism Of 3-Isopropyl-4h-2,1,3-Benzothiadiazin-4-(3h)-One-2,2-Dioxide (Bentazon) In Agitated And Non-Agitated Sediment, David Cortez Gutierrez
Theses and Dissertations
Bentazon, (3-isopropyl-1H-2,1,3-benzothiadiazin-4(3H)-l-2,2-dioxide) a new experimental herbicide, was studied under the effects of sterile and non-sterile conditions, 12 hours light: 12 hours dark and totally dark conditions, and agitated and non-agitated conditions in aquatic sediment. The effects of the different levels of BOD/COD values on the decomposition of Bentazon were studied. Photoperiod, sterility, and BOD/COD levels appeared to have no influence in the breakdown of Bentazon. Agitation-time interaction appeared to be the only factor that influenced the more rapid degradation of Bentazon. Bentazon was the major 14C-residue found in the water; it was followed by an unknown. The third major metabolite …
A Taxonomic And Ecologic Study Of The Riverbottom Forest On St. Mary River, Lee Creek And Belly River In Southwest Alberta, Canada, Robert Keith Shaw
A Taxonomic And Ecologic Study Of The Riverbottom Forest On St. Mary River, Lee Creek And Belly River In Southwest Alberta, Canada, Robert Keith Shaw
Theses and Dissertations
The riverbottom forest community of St. Mary River, Lee Creek and Belly River in southwest Alberta, Canada is a unique ecological entity characterized by poplar species having their major Alberta distribution along these streams. Stands in the community are dominated by three tree species, six shrub species and nine herb species. Establishment of the community is dependent on climate and substrate; destruction is the result of progressive lateral stream-flow erosion. Soils are sandy loams above gravel, with pH values of 7.7 to 8.0 and soluble salt concentration of 176 to 458 parts per million. Trees in mature stands averaged 23.0 …
The Algae Of Huntington Canyon, Utah, Carol Jean Endsley
The Algae Of Huntington Canyon, Utah, Carol Jean Endsley
Theses and Dissertations
A taxonomic study of the algae of Huntington canyon, Emery County, Utah, was conducted from March 1971 to April 1972. The algal flora of this cold, fast-flowing, hard-water mountain creek consisted of ninety-five genera, one hundred ninety-six species, twenty-nine varieties, and two forms. This diverse flora was dominated by many different species with usually rather few individuals of Achnanthes, Cymbella, Diatoma, Gomphonema, Lyngbya, Navicula, Nitzschia, Oscillatoria, Synedra, and Ulothrix.
Radial Distribution Of Corticular Photosynthate In Stems Of Bigtooth And Trembling Aspen, Robert K. Shepherd, Jr.
Radial Distribution Of Corticular Photosynthate In Stems Of Bigtooth And Trembling Aspen, Robert K. Shepherd, Jr.
Aspen Bibliography
No abstract provided.
Coastal Vegetational Communities Of The Two Texas Barrier Islands, Boca Chica And Brazos, Baltazar Cisneros
Coastal Vegetational Communities Of The Two Texas Barrier Islands, Boca Chica And Brazos, Baltazar Cisneros
Theses and Dissertations - UTB/UTPA
Two Texas barrier islands, Boca Chica and Brazos, have unique coastal vegetational communities that may be Influenced by several environmental factors. These environmental factors include temperature, precipitation, wind speed, sunshine exposure, day length, and dune height. The purpose of this investigation was to determine the total number of coastal plant species per station, season, and year and to consider environmental factors that may significantly affect the number and pattern of coastal species. Coverage comparison between aerial and land sampling and aerial vegetational zonation was also considered.
Results indicated the presence of 21 angiosperm families and a total of 54 species. …
Vitis Riparia Michx., Bob Holeman
Goodyera Pubescens (Willd.) R. Br., Loy R. Phillippe
Goodyera Pubescens (Willd.) R. Br., Loy R. Phillippe
Specimens by Name
No abstract provided.
Vitis Riparia Michx., W. E. Mcclain
Morus Alba Var. Alba, W. Mcclain
Acer Negundo L., Bob Holeman
Lysimachia Quadriflora Sims, John E. Ebinger
Vitis Riparia Michx., John E. Ebinger
Acer Negundo L., Randy W. Nyboer