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Theses/Dissertations from 2009

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The effects of light, temperature, after-ripening, nitrate and water on Chenopodium album seed germination, Lindsey Marie Altenhofen

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Phosphorus loss with surface runoff as affected by bioenergy-based residue and nutrient managment systems for an Iowa loam soil, Aaron Alan Andrews

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Tocopherol content of soybean lines with mid-oleate and 1%-linolenate, Raechel Baumgartner

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On-farm evaluation of fluid starter potassium fertilization for corn using precision agriculture technologies, Nicolas Bergmann

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Quantifying and predicting interseeded legume establishment in winter cereals, Brock Cameron Blaser

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The role of capitals in the promotion of sustainable community microfinance organizations, Ignacio Carranza Cerda

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Fossil energy use in conventional and low-external-input cropping systems, Michael James Cruse

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Cyst nematode resistance and seed yield of soybean lines derived from SS97-6946, Gregory Lynn Doonan

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Evaluation of popping expansion traits in a maize (Zea mays L.) population, Mauricio Erazo-barradas

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Evaluation fo frost damage in seed corn (Zea mays): with special emphasis on seed composition and moisture content, Heather Ann Hall

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Soil sample handling for routine analysis of plant-available soil potassium, Brian Edward Hill

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Agronomic, seed composition and molecular characteristics of soybean lines with novel genes for modified glycinin and beta-conglycinin content, Jonathan Jenkinson

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Genomic analysis of a major seed protein/oil QTL region on soybean linkage group I, Bindu Joseph

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Maize for production of recombinant proteins: fundamental and practical considerations, Lorena Beatriz Moeller

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Quaternary stratigraphy and pedology of Clear Creek watershed in Iowa County, Iowa, Brad Oneal

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Use of seed treatments and inoculants in no-tillage soybean production practices, Joseph John Osenga

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Physiological bases of environmental and genotypic effects on soybean seed composition, Josy Luis Rotundo

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Prediction of cultivar performance and heterogeneity of genotype variance, correlation and error variance in the Iowa Crop Performance Tests−Corn (Zea mays L.), Yoon-sup So

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Genetic improvement of seedling emergence of low-phytate soybean lines, Loren Ambrose Trimble

Theses/Dissertations from 2008

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The effects of farmer attitudes and farm management practices on soil quality: a study in Cherokee County, Iowa, Amber D. Anderson Mba

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Identity preservation & traceability: the state of the art - from a grain perspective (status of agricultural quality systems / traceability / certification systems), Gregory Scott Bennet

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An integrated approach to investigating the reintroduction of flax production in Iowa, Sarah Louise Carlson

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Soil and fertilizer potassium impacts on corn and soybean grain yield, potassium uptake, and within-field grain yield variation, Matthew William Clover

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Investigation of management strategies for the production of sweet sorghum as a bioenergy crop and preservation of crop residue by the ensiling process, Todd Joseph Cogdill

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Genetic mapping and analysis of traits related to improvement of popcorn, Thanda Dhliwayo

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Genetic diversity in cultivated and wild Hordeum species, Lucía Gutiérrez

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Effects of landscape position and age of reconstructed prairies in previously cultivated land on soil carbon dynamics and physical properties, Jose German Guzman

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Maize (Zea mays L.) kernel development, suitability for dry-grind ethanol production, and susceptibility to aflatoxin accumulation in relation to late-season water stress, Jason Wade Haegele

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Productivity and nutrient cycling in bioenergy cropping systems, Andrew Howard Heggenstaller

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The evaluation of maize genotypes for potential use in cellulosic ethanol production, Krystal Marie Kirkpatrick

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Establishment of transformation systems using mature seeds of maize inbred lines, Juan Carlos Martínez Nicolás

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Genetic analysis of ear development and tassel architecture in maize (Zea mays L. ssp. mays), Maria Laura Mayor

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Comparison of ESN, urea, and aqua ammonia as sources of nitrogen for corn production in Iowa, Jeffrey Allen Moore

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Diversity, productivity, and stability in perennial polycultures used for grain, forage, and biomass production, Valentín Daniel Picasso Risso

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Agronomic performance, seed characteristics, and stability of soybean lines containing mid oleate content and molecular analysis for diversity in the FAD2-1B gene, Curtis Wilmer Scherder

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Understanding cold acclimation in Medicago truncatula, Babita Thapa

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The effect of bio-char on soil properties and corn grain yields in Iowa, Rachel Colleen Unger

Theses/Dissertations from 2007

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Phenotypic analysis of intermated B73 x Mo17 (IBM) populations, Victor Javier Abertondo

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Breeding for improved emergence of low-phytate soybean lines, Brian Paul Anderson

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Managing maize pollen dispersal and out-crossing, Juan Pablo Astini

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Efficiency of fall and spring broadcast fertilizer phosphorus application for corn and soybean in no-till, Sebastián Raúl Barcos

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Interaction of m-Dinitrobenzene (DNB) with Calcium and Potassium saturated reference smectites in aqueous suspensions, Ritushree Chatterjee

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Plant extracted essential oils as a contact fungicide seed treatment for organic corn, Erik J. Christian

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Numerical simulations of maize pollen dispersal, Craig Andrew Clark

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Observations and simulations of mesoscale convective systems, James Correia Jr.

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Maximizing soybean yield potential in Iowa, Jason Lee De Bruin

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Soil management, crop rotations, and biomass removal effects on soil organic matter content, Krisztina Eleki

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Land management database development: methods for delineating management units and estimating crop and residue cover, Brian Keith Gelder

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Measurement of coupled soil heat and water processes, Joshua L. Heitman

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Management of self-seeding winter cereal cover crops in a soybean-corn rotation, Paul Bryant McDonald

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Soybean root health assessment in Iowa, Adriana Murillo-Williams

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Grazing management effects on sediment and phosphorus losses from streambanks, Shelly Lee Nellesen

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Dynamic soil properties across a suburban landscape, Ankeny, Iowa, Amy Elizabeth Norton

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Diversifying Midwestern agriculture with perennial forages: a review of the benefits and barriers to forages in Iowa, and a genetic study of biofuel potential for reed canarygrass, Julia Olmstead

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Using on-farm strip-trials to improve nitrogen management for corn, Gaylia Clare Gries Ostermeier

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Modeling phosphorus transport using the WEPP model, Mario Perez-Bidegain

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Agronomic performance of soybean [Glycine max (L.) Merr.] hybrids, Paola Tatiana Perez

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Long term effects of phosphorus and conservation tillage management on crop yield and soil phosphorus in corn-soybean rotations, Jacob Prater

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Assessment of nitrogen supply from poultry manure applied to corn, Dorivar A. Ruiz Diaz Suarez

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Heterosis in compositional, physical, and wet-milling characteristics of hybrids from exotic introgressed by adapted inbred lines in corn, Oswaldo R. Taboada-Gaytan

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Morphology and plasticity of maize (Zea mays L.) male inflorescence development and pollen production, Dean Michael Tranel

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Response of Asiatic dayflower (Commelina communis L.) to glyphosate and alternatives in soybean, Santiago M. Ulloa Cortázar

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Predicting the dispersion and viability of maize pollen, Brian J. Viner

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Characterization and classification of Native American maize landraces from the Southwestern United States, Lindsay C. Werth

Theses/Dissertations from 2006

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Influence of soybean population on the efficacy of glyphosate , Guillermo D. Arce Reyes

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Evaluation of potassium soil tests and methods for mapping soil fertility properties in Iowa corn and soybean fields , Pedro Aníbal Barbagelata

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Selection for high [beta]-glucan content and good agronomic performance in oat grain, Alona A. Chernyshov

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Molecular genetic analyses of oilseed Brassica germplasm: determination of life forms and germplasm management strategies by using microsatellite markers and FLOWERING LOCUS-C (FLC1 and FLC3) gene sequences , Von Mark V. Cruz

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Management strategies to improve soybean yield in high pH soybean cyst nematode infested fields , Vladimir Azevedo da Costa

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Seed quality of high protein corn lines in organic and conventional systems, Yara Nathalie de Geus

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Methods for identifying frost injury in immature maize seed , Mindy L. DeVries

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Recognition and signal transduction in the expression of Phytophthora resistance in soybean [Glycine max (L) Merr] , Hongyu Gao

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Use of plant-made essential oils as biological seed treatments in soybean, Gema Grau Bullón

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Field comparison of traditional and slow releasing nitrogen fertilizers, Bradley John Hammes

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Nitrogen stress sensing and in-season application for corn production, Jennifer Anne Hawkins

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Soil quality response to manure or compost amendments in alternative Iowa farm systems , Kevin Frederick Jensen

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Dew duration and amount on corn leaves as determined from measurements during SMEX05 and simulation using the ALEX model, Erik David Kabela

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Use of poultry manure as a phosphorus source for corn production in Iowa , Daniel Eric Kaiser

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Production of vaccines and vaccine components in corn , Sule Karaman

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Effect of seed moisture content, seed composition, and testing media in soybean (Glycine max L.) germination tests, Nathan Andrew LeVan

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Phenotypic, biochemical, and molecular diversity in coriander (Coriandrum sativum L) germplasm, Pedro Antonio López

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Genetic mapping of the Glu-1Dx5 transgene in maize (Zea mays L.), Marcus Michael Marine

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Reconstructing Quaternary landscapes and hydrology from soil survey maps, Bradley A. Miller

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Soil landscape modeling in the Northwest Iowa Plains region of O'Brien County, Iowa , Daniel Alan Nath

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Effects of crop rotation and nitrogen fertilization on soil nitrate concentration and corn yield , Enrique Ortiz-Torres

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Relationship between concentration of isoflavones in soybean grain and potassium fertilization , Mario Valadez Ramirez

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Use of precision agriculture technologies in studying the relationships among soil pH, calcium carbonate equivalent, soybean cyst nematode population density, and soybean yield , Natalia Rogovska

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Evaluation of seven stiff-stalk and five non-stiff-stalk corn populations, hybrids, and S1's , Thomas Edward Scheffler

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Genetic improvement of seedling emergence of soybean lines with low phytate , Jordan Dustin Spear

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Diversity and efficacy of arbuscular mycorrhizal (AM) fungi isolated from soils of soybean fields , Zahra Ifnou Troeh

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A quantitative trait response evaluation to selection in the BS13(S) maize (Zea mays L.) population , Clinton J. Turnbull

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The quantitative genetics of a non-stiff-stalk maize (Zea mays L) population , Brandon M. Wardyn

Theses/Dissertations from 2005

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Phenotypic and molecular analysis of oleate content in soybean , Jessie Lynn Alt

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Improving productivity of warm-season pastures by interseeding legumes , Indi Sue Braden

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Effects of nitrogen fertilization on soil carbon dynamics in a corn-soybean rotation in Iowa, Marc Louis Kruse

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Effects of tillage, nitrogen source and nitrogen rate on corn response and selective soil properties in a corn-soybean rotation, David Kwaw-Mensah

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Calculating ex post economic optimum rates of nitrogen fertilization for corn , Petro M. Kyveryga

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Evolution of the Palms (Terric Haplosaprist) soil in Iowa, 1969 to 2001, Beth Elaine Larabee

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Genetic and physiological characterization of seed dormancy regulation in common waterhemp [Amaranthus tuberculatus (Moq) Sauer] , Ramon G. Leon-Gonzalez

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Assessing corn pollen flow and outcross in seed and grain production fields , Higinio Lopez-Sanchez