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1976

Plant Sciences

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Full-Text Articles in Life Sciences

Biomass And Nutrient Content Of Green Material The Size Of Medium And Large Litter, William E. Miller Dec 1976

Biomass And Nutrient Content Of Green Material The Size Of Medium And Large Litter, William E. Miller

Aspen Bibliography

No abstract provided.

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The Prairie Naturalist Vol. 8, Nos. 3 And 4 September-December 1976 Dec 1976

The Prairie Naturalist Vol. 8, Nos. 3 And 4 September-December 1976

The Prairie Naturalist

SPRING MORTALITY OF INSECTIVOROUS BIRDS IN SOUTHERN MANITOBA ▪ J. R. Serie and R. E. Jones

CHRISTMAS BIRD COUNTS FOR NORTH DAKOTA—1976 ▪ R. N. Randall

MOSSES OF THE GREAT PLAINS: INTRODUCTION AND CATALOGUE ▪ S. P. Churchill

NOTES

Fulvous Tree Duck in North Dakota ▪ L. A. Jones

Unusual Mortality of a Saw-whet Owl ▪ H. A. Kantrud

Cardinal and Mockingbird in Jamestown, North Dakota ▪ D. H. and J. E. Johnson

BOOK REVIEWS

Essence of Wilderness ▪ K. T. Killingbeck

The Changing America ▪ L. M. Kirsch

A Government Bird Book ▪ J. F. Cassel

Wildflowers ofthe Rockies …

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Results Of The Sixth International Winter Wheat Performance Nursery Grown In 1974, K. D. Wilhelmi, S. L. Kuhr, V. A. Johnson, P. J. Mattern, J. W. Schmidt Dec 1976

Results Of The Sixth International Winter Wheat Performance Nursery Grown In 1974, K. D. Wilhelmi, S. L. Kuhr, V. A. Johnson, P. J. Mattern, J. W. Schmidt

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

This is the sixth report of results from an International Winter Wheat Performance Nursery (IWWPN) organized in 1968 by the Nebraska Agricultural Experiment Station and the Agricultural Research Service, U. S. Department of Agriculture, under a contract with the Agency for International Development, U.S. Department of State. The Nursery was designed to (1) test the adaptation of winter wheat cultivars in a range of latitudes, daylengths, fertility conditions, water management, and disease complexes; (2) identify superior winter cultivars to serve as recipient genotypes for high protein and high lysine genes, and (3) test the degree of expression and stability of …

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Southeast South Dakota Experiment Farm Annual Progress Report, 1976, Agricultural Experiment Station Dec 1976

Southeast South Dakota Experiment Farm Annual Progress Report, 1976, Agricultural Experiment Station

Agricultural Experiment Station and Research Farm Annual Reports

This sixteenth annual report of the research program at the Southeast South Dakota Experiment Farm has special significance for those engaged in agriculture and the agriculturally related businesses in the nine county area of southeast South Dakota. Reports in this document include information on: temperatures and precipitation data, corn breeding and performance, soybean research and planting, crop rotation, grain trials, and animal waste disposal.

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Central Crops And Soils Research Station Highmore, South Dakota: Annual Progress Report, 1976, Agricultural Experiment Station Dec 1976

Central Crops And Soils Research Station Highmore, South Dakota: Annual Progress Report, 1976, Agricultural Experiment Station

Agricultural Experiment Station and Research Farm Annual Reports

This is the 1976 progress report for the Central Crops and Soils Research Station at Highmore, South Dakota State College. This document represents the research conducted at the Station during the 1976 crop season including: weather data, weed control for crop production, tillage and fertility experiments, winter wheat, and small grain variety trials.

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West River Agricultural Research And Extension Center Progress Report, 1976, Agricultural Experiment Station Dec 1976

West River Agricultural Research And Extension Center Progress Report, 1976, Agricultural Experiment Station

Agricultural Experiment Station and Research Farm Annual Reports

This is the 1976 annual progress report of the West River Crops Soils Research and Extension Center, South Dakota Agricultural Experiment Station. This report includes: a weather summary, small grain variety trials, specialty crop variety trials, sorghum variety testing, irrigated alfalfa trials, water management trials, management, tillage and cultural practices, fertilizer studies on spring wheat, crop disease control, and plot information.

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Front Matter, Vol. 1 Dec 1976

Front Matter, Vol. 1

Great Basin Naturalist Memoirs

No abstract provided.

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End Matter, Vol. 1 Dec 1976

End Matter, Vol. 1

Great Basin Naturalist Memoirs

No abstract provided.

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A Bibliography Of Taxonomic Literature Of The Great Plains Flora, With Supplements I, Ii, And Iii, Ralph E. Brooks Dec 1976

A Bibliography Of Taxonomic Literature Of The Great Plains Flora, With Supplements I, Ii, And Iii, Ralph E. Brooks

School of Biological Sciences: Faculty Publications

There is at present no recent comprehensive manual of the Great Plains flora. Consequently, students of the flora must utilize monographs, revisions, and other sources in their work. This bibliography was compiled in order to facilitate location of available literature, and will be useful to anyone interested in the systematics of the plants of the Great Plains. This compilation was produced for the Great Plains Flora Association as an initial step in the preparation of a major flora for the region.

References to the plants of the Great Plains region as recognized in the Atlas of the Great Plains Flora …

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Effects Of Time Of Application Of Glyphosate In The Control Of Johnsongrass, Marlin Moody Dec 1976

Effects Of Time Of Application Of Glyphosate In The Control Of Johnsongrass, Marlin Moody

Masters Theses & Specialist Projects

Investigations were conducted to determine the effects of the herbicide glyphosate and its time of application on the control of johnsongrass.

Johnsongrass plots were divided into areas designated undisturbed, spring plowed, and clipped. These areas were compared to determine differences in control of johnsongrass when using glyphosate with different management procedures. Glyphosate was applied at weekly intervals and treatment effects were statistically analyzed. There were three replications of each treatment.

It appears from the results that:

  1. Glyphosate kills approximately 100% of the johnsongrass topgrowth regardless of the application date.

  2. Height of the johnsongrass plant at the time of glyphosate application …

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Leaf Epidermal Transmittance Of Ultraviolet Radiation And Its Implication For Plant Sensitivity To Ultraviolet-Radiation Injury, Ronald Robberecht Dec 1976

Leaf Epidermal Transmittance Of Ultraviolet Radiation And Its Implication For Plant Sensitivity To Ultraviolet-Radiation Injury, Ronald Robberecht

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Leaf epidermal transmittance of ultraviolet radiation (280-400 nm) was examined in several plant species to determine the capability of the epidermis to attenuate solar ultraviolet radiation. Epidermal samples were mechanically isolated and examined with a spectroradiometer/integrating sphere for transmittance. A survey of 25 species exposed to natural insolation was conducted. Although the species differed in life form, habitat type, and epidermal characteristics, epidermal transmittance was generally less than 10%. Ultraviolet radiation was attenuated 95 to 99% in more than half of the species. In 16 species, flavonoid and related pigments in the epidermis accounted for 20 to 57% of the …

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Evaluation Of Glyphosate In No-Till Double Crop Soybeans Using Varying Volumes & Pressures, Charles Rogers Dec 1976

Evaluation Of Glyphosate In No-Till Double Crop Soybeans Using Varying Volumes & Pressures, Charles Rogers

Masters Theses & Specialist Projects

No-tillage production of crops has developed and become widespread since the late 1950/s. No-till is dependent upon the use of broad spectrum herbicides to kill weeds already growing at planting time. Until recently, this has almost exclusively been paraquat (1,1'-dimethy1-4,4'-bipyridinium ion). Glyphosate [N-(phosphonomethyl)glycine] is a new herbicide which has great potential for use in no -tillage production.

Soybeans (Glycine max L.) were planted in the stubble after wheat (Triticum aestivum L.) was harvested. All plots received applications of the residual herbicides alachlor [2-chioro-2',6'-diethyl-N-(methoxymethyl)acetanilide] and linuron [3-(3,4-dichlorophenv1)-1-methoxy-1-methylurea]. Each plot also received either paraquat or glyphosate or was designated as …

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Growth Analysis Of Tall Fescue Genotypes Differing In Yield And Leaf Photosynthesis, Wallace Wilhelm, C. J. Nelson Nov 1976

Growth Analysis Of Tall Fescue Genotypes Differing In Yield And Leaf Photosynthesis, Wallace Wilhelm, C. J. Nelson

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Leaf growth, dry matter distribution , and carbohydrate content of four tall fescue (Festuca arundinacea Schreb.) genotypes selected for high and low net C02 exchange (NCE) and forage yield were studied in controlled environments t o evaluate the leaf NCE-yield relationship. High yield genotypes produced greater amounts of all plant parts and carbohydrate than the low yield genotypes. Within each yield level the high NCE genotypes produced more dry matter and carbohxdrate. Leaf growth of all genotypes was linear throughout light and dark periods, but rates were 50% greater for high yield genotypes, RGR was similar for all genotypes. NAR …

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Nitrate Reductase Activity In Tall Fescue, D. D. Randall, Wallace Wilhelm, R. F. Feuers, C. J. Nelson Nov 1976

Nitrate Reductase Activity In Tall Fescue, D. D. Randall, Wallace Wilhelm, R. F. Feuers, C. J. Nelson

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

An in vitro assay for tall fescue leaf nitrate reductase activity (NRA) was established that required either O.5 % casein or polyvinylpyrrolidone in the extraction medium for maximal activity. Leaf NRA was proportional to light intensity and fertility levels. Mature tissue and high temperature decreased NRA. NRA showed significant genetic variability in broadly based genotypes and genotypes selected for photosynthetic rates and forage yields. However, progeny of the latter did not show significant genetic variability. High coefficients of variation (30-50%) among the heterogeneous progeny may have masked true genetic differences. No significant correlations were found between NRA and photosynthesis or …

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Report On Wastewater Disposal To Board Of County Commissioners, Clark County Nevada, Clair N. Sawyer Oct 1976

Report On Wastewater Disposal To Board Of County Commissioners, Clark County Nevada, Clair N. Sawyer

Publications (WR)

This report is concerned with the management of waste-waters and subsurface drainage from the City of Las Vegas and its environs and the BMI complex, all in Clark County, Nevada. The prime objective is to recommend a plan of action which will utilize the natural resources of the area in the least costly manner and still protect Lake Mead for recreational purposes and use as a public water supply, At this writing, conditions in the upper Las Vegas arm of Boulder Basin are quite unsatisfactory for some recreational purposes due to the extensive blooms of algae which develop. Experience at …

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Verbena Halei Small, Greg Runyon Oct 1976

Verbena Halei Small, Greg Runyon

Specimens by Name

No abstract provided.

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Interactions Between Insects And Chemical Components Of Sweetclover, G. R. Manglitz, Herman J. Gorz, Francis A. Haskins, W. R. Akeson, G. L. Beland Oct 1976

Interactions Between Insects And Chemical Components Of Sweetclover, G. R. Manglitz, Herman J. Gorz, Francis A. Haskins, W. R. Akeson, G. L. Beland

Department of Agronomy and Horticulture: Faculty Publications

This review concerns the relationship between chemical components found in sweetclover [Melilotus officinalis (L.) Pall. and M. alba Desr.] tissues and insects feeding on these tissues. Coumarin and its related compounds did not appear to influence the feeding of sweetclover aphids [Therioaphis riehmi [Börner)], pea aphids [Acyrthosiphum pisum (Harris)] or potato leafhoppers [Empoasca fabae (Harris)] , however, these materials appeared attractive to sweetclover weevils (Sitona cylindricollis Fåhraeus) and to adult sweetclover root borers [Walshia miscecolorella (Chambers)]. Conversely the feeding of four species of blister beetles (Epicauta sp.] was inhibited by cis-o-hydroxycinnamic acid …

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A Biosystematic Study Of Triteleia (Liliaceae). Ii. Chromosome Numbers And Karyotypes Of The Species Of Section Calliprora, Lee W. Lenz Sep 1976

A Biosystematic Study Of Triteleia (Liliaceae). Ii. Chromosome Numbers And Karyotypes Of The Species Of Section Calliprora, Lee W. Lenz

Aliso: A Journal of Systematic and Floristic Botany

No abstract provided.

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A Reclassification Of The Siberian Irises, Lee W. Lenz Sep 1976

A Reclassification Of The Siberian Irises, Lee W. Lenz

Aliso: A Journal of Systematic and Floristic Botany

No abstract provided.

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The Nature Of The Floral Appendeages In Four Species Of Dichelostemma (Liliaceae), Lee W. Lenz Sep 1976

The Nature Of The Floral Appendeages In Four Species Of Dichelostemma (Liliaceae), Lee W. Lenz

Aliso: A Journal of Systematic and Floristic Botany

No abstract provided.

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Floral Uv Patterns And Anthochlor Pigments In The Genus Coreopsis (Asteraceae), Ron Scogin Sep 1976

Floral Uv Patterns And Anthochlor Pigments In The Genus Coreopsis (Asteraceae), Ron Scogin

Aliso: A Journal of Systematic and Floristic Botany

No abstract provided.

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Anthochlor Pigments And Pollination Biology. I. The Uv Absorption Of Antirrhinum Majus Flowers, Ron Scogin Sep 1976

Anthochlor Pigments And Pollination Biology. I. The Uv Absorption Of Antirrhinum Majus Flowers, Ron Scogin

Aliso: A Journal of Systematic and Floristic Botany

No abstract provided.

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The Vernal Pools On Mesa De Burro Of The Santa Rosa Plateau, Riverside County, California, Earl W. Lathrop, Robert F. Thorne Sep 1976

The Vernal Pools On Mesa De Burro Of The Santa Rosa Plateau, Riverside County, California, Earl W. Lathrop, Robert F. Thorne

Aliso: A Journal of Systematic and Floristic Botany

No abstract provided.

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Tribal Interrelationships And Phylogeny Of The Asteraceae, Sherwin Carlquist Sep 1976

Tribal Interrelationships And Phylogeny Of The Asteraceae, Sherwin Carlquist

Aliso: A Journal of Systematic and Floristic Botany

No abstract provided.

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Abronia: Iv. Anthocarp Dispersibility And Its Ecological Implications For Nine Species Of Abronia, Ruth C. Wilson Sep 1976

Abronia: Iv. Anthocarp Dispersibility And Its Ecological Implications For Nine Species Of Abronia, Ruth C. Wilson

Aliso: A Journal of Systematic and Floristic Botany

No abstract provided.

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Observations On Thamnidiaceae (Mucorales). Ii. Chaetocladium, Cokeromyces, Mycotypha, And Phascolomyces., Gerald L. Benny, R. K. Benjamin Sep 1976

Observations On Thamnidiaceae (Mucorales). Ii. Chaetocladium, Cokeromyces, Mycotypha, And Phascolomyces., Gerald L. Benny, R. K. Benjamin

Aliso: A Journal of Systematic and Floristic Botany

Four previously established genera of Thamnidiaceae and their recognized species are described and illustrated. Seven species are treated as follows: Chaetocladium jonesii, C. brefeldii, Cokeromyces recurvatus, Mycotypha africana, M. microspora, M. poitrasii (a new combination based on Cokeromyces poitrasii), and Phascolomyces articuloms. Phascolomyces articuloms, the type species of Phascolomyces, was described in 1959 without the preservation of a nomenclatural type as required by the International Code of Botanical Nomenclature, and original material is unknown. A neotype specimen is designated (preserved in RSA) for validation of the genus and species.

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New Species Of Stylidium, And Notes On Stylidiaceae From Southwestern Australia, Sherwin Carlquist Sep 1976

New Species Of Stylidium, And Notes On Stylidiaceae From Southwestern Australia, Sherwin Carlquist

Aliso: A Journal of Systematic and Floristic Botany

Three new species of Stylidium from southwestern Australia are described. Stylidium noriscandens is most closely related to S. scanclens, of which it may be regarded as a northern sandplain vicariant with sufficient morphological difference for specific recognition, just as S. veiticillatum is a montane vicariant of S. scandens. Stylidium expeditionis is a new species known only from the Tutanning Reserve near Pingelly; it is in the section Squamosae, and several species can be cited as bearing relationship to it. Stylidium ricae is the name given to a plant of granitic outcrops near Morawa and Mullewa; it was formerly …

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A Taxonomic And Ecologic Study Of The Riverbottom Forest On St. Mary River, Lee Creek, And Belly River In Southwestern Alberta, Canada, Robert K. Shaw Sep 1976

A Taxonomic And Ecologic Study Of The Riverbottom Forest On St. Mary River, Lee Creek, And Belly River In Southwestern Alberta, Canada, Robert K. Shaw

Great Basin Naturalist

The riverbottom forest community of St. Mary River, Lee Creek, and Belly River in southwestern 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 concentrations of 176 to 458 parts per million. Trees in mature stands averaged 23.0 …

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Triphora Trianthophora Rydb. In Britton, Randy Vogel Sep 1976

Triphora Trianthophora Rydb. In Britton, Randy Vogel

Specimens by Name

No abstract provided.

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Viola Pratincola Greene, Randy W. Nyboer Sep 1976

Viola Pratincola Greene, Randy W. Nyboer

Specimens by Name

No abstract provided.

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