This community contains the theses and dissertations of the South Dakota State University, Department of Agronomy, Horticulture, and Plant Science.
Due to copyright restrictions, the collection contains both open access and university access theses and dissertations. University access items are only available to SDSU users, and on-campus visitors. Non-SDSU users wishing to access restricted materials may request items through their institution’s interlibrary loan services.
ETDS from 1966
Study of Totipotency in the Leaf Cells of the Carrot Plant, Ch'I Sun
Fluorometric Determination of Magnesium in Soil Extracts, Roger A. Swanson
ETDS from 1965
The Effect of Heterosis on Yield Components in Hybrids of Wheat, Verlin Gene Boeder
Transmission of Two Strains of Two Stylet-Borne Viruses by Single Myzus persicae (sulz.) Aphids, Manolo Bautista Castillo
Linkage Between Chromosomal Interchanges and Colchicine Mutated Genes in Sorghum Vulgare, John R. Deakin
The Nature of the Suspension Effect, With Special Reference to Clay Suspensions, Gary E. Spalding
Phosphorous Uptake by Oat Seedlings from Phosphorus Fertilizer Applied to a Subsoil as Affected by Soil Moisture, Dean E. Wesley
ETDS from 1964
Evaporation reduction investigation Pactola Reservoir, South Dakota 1962-1963 /by Jon Francis Bartholic., John Francis Bartholic
Anatomy and Bud Formation of Subterranean Parts of Leafy Spurge (Euphorbia Esula L.), Charles A. Beasley
The Effect of Environment on Heritability of Yield in Spring Wheat, Joseph J. Bonnemann
Cytohistological Studies on the Origin of Diploid Stem Apices in Colchicine-treated Tetraploid Sorghum Seedlings, Chen Ho Chen
A Comparison of the Characteristics of the Ped Faces and Ped Interiors in the B Horizon of a Modal Chestnut Soil, Robert Dean Heil
Homeostatic Relationships of Single- and Double-crosses of Corn, Rodney Orlyn Hexem
Growth Characteristics and Pathogenicities of Monospore Cultures of Septoria Glycines, Neil Everett Martin
The Reactions of Selenium with Purines, Pyrimidines, and Certain Other Compounds, Sandor Laszlo Vander
ETDS from 1963
Investigations of Inhibitors, Dormancy, and Photoperiod in Common Ragweed, Veryl E. Becker
A More Quantitative Approach to Soil Morphology, George Jule Buntley
Root-shoot Transition of Ranunculus Septentrionalis Poir, Ronald Maurice Duehr
Revegetating Native Grass Pastures with Tame Grasses and Alfalfa in the Northern James Valley Region of South Dakota, Laurel L. Howe
The Effect of Organic Trenching on Grain Yields, Soil Moisture and Root Penetration on Claypan Soils in South Dakota, Quentin S. Kingsley
Preliminary Study of the Morphology, Genesis and Classification of Some Soils Developed from Pierre Shale, Earl Anthony Monnens
Somatic Chromosome Reduction in Sorghum After Colchicine Treatment, Gerald Milo Simantel
Dormancy in Green Needlegrass Seed :Its Nature, Mode of Action, and Methods of Reproduction, Loren E. Wiesner
Poinsett Silty Clay Loam: Its Genetic Factors, Norman Eugene Zischke
ETDS from 1962
A Characterization of the Inorganic and Available Phosphorus Content of Four South Dakota Soils, Robert O. Carlson
Genetic and Cytogenetic Aspects of Colchicine-induced Male Sterility in Sorghum, Alvin Wayne Erichsen
A Study of the Kranzburg Soils with Particular Regard to the Clay Separate, Elden Everett MacNamara
Oxygen Diffusion in Homogeneous Soil, Robert I. Papendick
Inheritance of Reaction of a Diallel Set of Diploid Alfalfa Clones to Two Pathogens of the Blackstem Complex, Sadi A. Tamimi
An Approach to Selection for Relative Water-use Efficiency Through its Relationship to Other Plant Characters in Eight Oat Varieties, Neil Wayne Widstrom
ETDS from 1961
Genetic Similarity of Colchicine-induced Grass-type Mutants in Sorghum, Jane-Ru Po Chen
The Use of Cucumber Seedlings to Measure Growth Regulator Activity, Paul E. Drangeid
Responses of Experimental 3, a Sorghum Variety, to Gamma Radiation and Colchicine, Hubert Dennis Haensel
Marked Chromosomes in Sorghum, Chester Chen-chiu Huang
A Study of Progenies of a Colchicine Treated F1 Hybrid of Zea mays L, Donald Elmer Kratochvil
Evaluation for Stalk Rotting in Some Dent Corn Inbred Lines Alone and in Top Cross Combination with a Single Cross, Surindar Mohan Parcer
Effect of Slope and Exchangeable Sodium on Run-off, Erosion and Electrical Conductivities of Leachates from Cheyenne Sandy Loam Soil, Abbas Shahrzad Tabatabai
Natural and Induced Dormancy in Sorghum vulgare Pers, Wayne G. Wright
ETDS from 1960
Physiologic specialization within Sphacelotheca reiliana (Kühn) Clint. on Sorghum and the Biology of its Chlamydospores in the Soil, Ibrahim Aziz Al-Sohaily
The Effectiveness of Various Phosphorus Carriers for Increasing the Yield and Phosphorus Content of Alfalfa and Barley, Lloyd E. Davis
Studies on the Persistence of Corynebacterium insidiosum in Soil and of an Antagonistic Variant of the Species, Gordon Albert Nelson
Response of Inbred Corn Lines to Drouth Under Several Different Environmental Conditions, Paul Terrence Nordquist
A Study of Some Herbicides Applied Pre-emergence and the Influence of Rainfall Upon their Activity, Walter E. Splittstoesser
The Interaction of Nitrogen and Moisture on Crop Yield and Water Use, Clinton D. Stoner
A Study of Certain Cultural Practices and Chemicals for the Control of Wild Oats (Avena fatua L.), Wilford Henry Wallace
Unidentified Growth Factor(s) in Soybean Oil Meal, Robert Wilcox
ETDS from 1959
Diffusion of Oxygen Through Saturated Porous Media, Paul Fruen
Determining Winter Hardy Apple Genotypes Prior to Seed Germination, Harry Eugene Lasn
Desorption of Ammonium from Montmorillonite Clay, Rein U. Mesdag
Effect of Time of Fertilizer Application on Yield and Quality of Oats and Barley, John J. Mortvedt
The Barnes and Houdek Soils Their Morphology and Classification, Ordell Pendor Olson
Leafy Spurge Studies of Vegetative Weed Activity and Seed Development, Gail A. Wicks
The Classification, Morphology, and Genesis of Sinai Soils, Lawrence Paul Wilding
Respiration Rate as a Measure of Performance in Adaptation Studies in Oats, Norman E. Williams
ETDS from 1958
Genetic Analysis of Colchicine-induced Diploid Mutants in Sorghum, A. Earl Foster
Studies of Colchicine Treated Maize and Sorghum Seedlings, George P. Hanson
The Effects of Colchicine on an Inbred Line of Corn, Raymond A. Moore
Yield and Maturity of Populations of Drilled Corn Hybrids on the Northern Great Plains, Darrold E. Termunde
Consumer Preferences and Attitudes Toward Butter and Advertising in Brookings and Madison, South Dakota, Paul M. Williamson
ETDS from 1957
The Effect of Moisture and Fertilizer on Drouth Resistance Factors, F. Paul Baxter
Reaction of Certain Diploid and Tetraploid Alfalfas to Some Phytopathogens Including the Blackstem Disease, Harry Geise
A Comparison Between Laboratory Nitrogen Determinations and the Response of Oats to Nitrogen Fertilization in South Dakota, Milo I. Harpstead
The Effect of Late Applications of Herbicidal Sprays on the Yield and Germination of Flax, Mark W. Johnson
Utilization of Nitrogen Fertilizer by Crops as Influenced by Time of Application, Carriers and Crop Residues, Wayne E. Lamke
Etiology and Control of a Seedling Blight of Flax Caused by Rhizoctonia solani Kühn, Vernyl D. Pederson
Some Factors Affecting 1957 Acreage Reserve Participation in the South Dakota Wheat Area, Allan M. Severson
Survey of the Attitudes of Parents Toward Vocational Agriculture in South Dakota, Ernest W. Wingen
Effects of Urea and Some Other Nitrogen Compounds on Germination of Wheat, Walter R. Zich
ETDS from 1956
Morphology of Stamens and Staminodia of Echinocystis Lobata (Michx.) T. & G., Engracia B. Arguelles
Differential Reaction of Two Varieties of Sorghum to Colchicine Treatment, Glenn Francis Atkinson
Evaluating the Mode of Inheritance in Tetraploid Alfalfa by Means of Genetic Intra-class Correlation, Wesley D. Dunlap
Genetic Analysis of F2 Populations from Crosses Involving Colchicine-induced Mutants in Sorghum, A. Earl Foster
Alfalfa Seedling Rot in Relation to the Quantity of Pythium in South Dakota Soils, Michael Komanetsky
Growth and Selenium Content of Wheat as Affected by Applications of Salts to Soils, Frederick J. Kurpjuweit
The Effect of High Temperature Contact Treatment on Hard Seeds in Alfalfa, Allyn O. Lunden
A Study to Determine the Importance of Pre-service Training in Teaching Farm Mechanics Jobs in Vocational Agriculture, Morris W. Magnuson
ETDS from 1955
Percent of Blend of Male Sterile and Male Fertile Corn Seed for Optimum Fertilization in Hybrid Corn at two Locations in South Dakota, Gerhardt Walter Erion
Effects of High Temperature on Fruit Set in Tomatoes Lycopersicon Esculentum, Hashem M. Moghrabi
ETDS from 1954
Chemical Weed Control in Shelterbelts, Elvin K. Ferrell
Nitrogen and Phosphorus Fertilizer, and Synthetic Soil Conditioner Treatments, as They Affect Small Grains on Eastern South Dakota Soils, Ray Gene Gresham
Drought Resistance of Inbred and Hybrid Corn Under Artificial and Natural Conditions, Stanley Dean Jensen
A Comparison of Volumes and Types of Carrier, Rate and Method of Application of Several 2, 4-D Estems on Wheat, Keith E. Wallace
History of the South Dakota Crop Improvement Association, Jason S. Webster
ETDS from 1953
Dehiscence of the Fruit of Papaver orientale L., Lloyd C. Ayres
The Nature of Chromatin Changes in Colchicine-induced Variants in Sorghum, Dale D. Harpstead
Early Floral Development in Gaura coccinea, Edward Olson
The Effect of Bicarbonate in Irrigation Waters on the Exchangeable Sodium Status of the Soil, Edward J. Williamson
ETDS from 1952
Plant Color as Related to Reflection of Light, Leaf Temperatures, and Drought Reaction on Barley, Dan Walter Chisholm
Developmental Anatomy and Dehiscence of the Fruit of Astragalus canadensis L., David J. Holden
Emergence of Inbred Lines and Crosses of Corn at Low Temperatures when Harvested at Various Stages of Maturity, Glen Earl Nachtigal
Effect of Nitrogen and Phosphorus Fertilizers Applied to Crops Grown on South Dakota Soils, Daniel Arthur Norgaard
ETDS from 1951
An Investigation of Certain Physical and Chemical Factors Determining the Selection of Oils as Carriers of Herbicides, James D. Stone
ETDS from 1950
Block Diagram Presentation of South Dakota Soil Associations Showing Morphologic, Topographic, and Geologic Relationships, George J. Buntley