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Theses/Dissertations from 1997

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Productivity and profitability of strip intercropping systems as implemented by agronomists and farmers , Derrick Noble Exner

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Evaluation of genetic variability using full-sib families within and between the BS10 and BS11 synthetic maize (Zea mays L.) populations for the original and tenth cycle of selection , Todd Eugene Frank

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Genetic studies of Agastache , Roger Guillermo Fuentes-Granados

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Carbon dynamics of surface residue- and root-derived particulate organic matter in the whole soil and aggregate size fractions , William Jeffrey Gale

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Genetic characterization of Northern Flints and Flours maize (Zea mays L. spp. mays) with isozyme, SSR, and morphological markers, William Gerardo González Ugalde

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Divergent mass selection for ear length in the Iowa Long Ear Synthetic maize cultivar after twenty-seven cycles of selection , Jose de Jesus Lopez-Reynoso

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Progress toward the better estimation of regional evapotranspiration , David Winter Meek

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Agronomic and seed traits of soybean lacking seed lipoxygenase isozymes, James Mark Narvel

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Comparative response to selection of two reciprocal recurrent procedures in BS21 and BS22 maize populations , Mónica A. Menz Rademacher

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The Uq-ruq and En/Spm-I/dSpm transposable element systems in Zea mays L. , Beom-Seok Seo

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An assessment of diagnostic tools for improved soil and crop management , Moses Mang'eni Siambi

Theses/Dissertations from 1996

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Genetics with the k2 Mdhl-n y20 chromosomal region in soybean [Glycine max (L) Merr] , Xianfeng Chen

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Physiological changes in maize seed (Zea mays L.) quality associated with genotype, drying temperature and aging , Dongsheng Feng

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Composition and transport of sludge-derived organic carbon in soil and aquifer material , Nizhou Han

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Recurrent selection for seed yield in soybean populations with different percentages of plant introduction parentage , Jane Ininda

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Influence of high-temperature desiccation on physiology and chemical composition of hybrid maize (Zea mays L.) axis mitochondria , John Russell Keiser

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Production, evaluation, and utilization of hybrid soybean [Glycine max (L.) Merr.] , Kimberly Suzanne Lewers

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Molecular marker analysis of iron efficiency in soybean (Glycine max (L.) Merr.) , Shun-Fu Lin

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Interactions of vesicular arbuscular mycorrhizal fungi, herbicides and crops , Mercy Joseph Nedumpara

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An ideotype of maize for conditions of high temperature and low moisture , Luis Sangoi

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Inheritance and development of reduced and elevated palmitate in mutant lines of soybean , Steven Roger Schnebly

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Heat, water, and chemical transport in soils, Mingan Shao

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Genetic gain for seed yield in soybean populations by recurrent selection , Michael Donald Uphoff

Theses/Dissertations from 1995

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Restriction fragment length polymorphism in sorghum (Sorghum bicolor (L.) Moench): characterization of genetic diversity and quantitative trait loci , Dario Ahnert

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Genetic location and characterization of chromosomal regions affecting second-generation European corn borer resistance in a maize population , Mark Joseph Brinkman

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Analysis and application of the En transposable element and genetic study of resistance to Bipolaris maydis in maize , Ru-Ying Chang

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Subsurface stratigraphy and genesis of pre-Wisconsin paleosols in Whitebreast Creek Watershed, south-central Iowa , Amir Hossein Charkhabi

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Corn yield response to rotation effect, N fertilizer application and row position in a strip intercropping system, Urszula Choromanska

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Liquid swine manure and nitrogen fertilizer effects on soybean yield, soil profile nitrogen, and mineralization rates, Jodi Marne DeJong

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Selectivity of nicosulfuron and primisulfuron in three annual grasses , John Robert Hinz

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Germination ecology of shattercane (Sorghum bicolor (L.) Moench) and giant foxtail (Setaria faberi Herrm) , George Ogada Kegode

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RFLP mapping of quantitative trait loci for reproductive, morphological, and seed traits of soybean (Glycine max L.) across environments , Heike Kross

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Response of soybean cyst nematodes to herbicide application on soybeans , Brian Charles Levene

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Corn responses to nitrogen forms, ammonium/nitrate ratios and potassium in Iowa and Kenya , Nesbert Mangale

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Productivity, morphology, phenology, and physiology of a desert-adapted Native American maize (Zea mays L.) cultivar , Deborah Ann Muenchrath

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Enzyme, inoculant, and formic acid effects on silage quality of orchardgrass and alfalfa , Elisabet Maria G.T. Nadeau

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Indigenous knowledge of soil and agriculture at Zuni Pueblo, New Mexico, Roman R. Pawluk

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Sources of variability in nitrogen availability in Iowa cornfields , Carlos Honorio Perdomo

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Histochemical, physiological and ultrastructural changes in the maize embryo during drying , Jose Antonio Perdomo

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Amino acid composition of soil organic matter and nitrogen transformations in soils under different management systems , Zachary Ngewoh Senwo

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Proper analysis of the diallel mating design , Jay R. Sughroue

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Extended range forecasting and the ENSO effects in the Corn Belt , Dennis Patrick Todey

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Microbial biodegradation of the herbicide 2,4-D in soils and subsurface sediments, Jennifer Anne Welch

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Triple testcross analysis to detect epistasis and estimate genetic variances in an F2 maize population , Duane Paul Wolf

Theses/Dissertations from 1994

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Flow past an agricultural shelterbelt: measurements and model results , Alkhalil Adoum

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Characterization and estimation of genetic parameters in the interpopulations formed by crossing unselected and selected BSSS and BSCB1 maize synthetics , Francisco Javier Betrán

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Dual probe methods for determining soil thermal properties: numerical and laboratory study , James Robert Bilskie

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Application of differential scanning calorimetry for identifying novel starch types in maize , Mark Robert Campbell

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Cellulase activity of soils and the effect of tillage management on enzyme activities in soils , Shiping Deng

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Barley growth, physiology, and forage quality as influenced by defoliation and water stress , El-Houssine El-Mzouri

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Detection and correction of inhomogeneous climatological series in Iowa , Gilênio Borges Fernandes

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Wheat-soybean relay intercropping: Temporal and spatial effects , Roger Delmar Flesch

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Effect of heat stress during seed development and maturation on wheat (Triticum durum) seed quality , Lahcen Grass

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Estimation of genetic parameters in two maize recurrent selection programs , Joel Francis Holthaus

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Iowa survey for leafy spurge (Euphorbia esula) and study of leafy spurge and Aphthona nigriscutis interaction in the northern Great Plains, Sheri Colleen Huerd

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Development, sugar yield, and ethanol potential of sweet sorghum, Emily Lucille Hunter

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Genetic and cytological analyses of four partial-sterile mutants in soybean (Glycine max L. Merr.) , Telma Nair S. Pereira

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Genetic analysis of inbred and topcross progeny of an elite, single-cross maize population , Lance Reed Veldboom

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Weedy adaptation in Setaria spp: genetic diversity, population genetic structure and variation in herbicide resistance , Rong-Lin Wang

Theses/Dissertations from 1993

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Metal-induced sulfate adsorption by soils , Husein Ahmad Ajwa

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Heterotic patterns among Latin America highland tropical maize cultivars , Miguel A. Barandiaran

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Effect of enhanced ammonium nutrition on grain yield, yield components and plant adaptation of maize grown in soybean-corn and corn-corn rotations , Bill Stuart Curran

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Comparative responses of chickpea cultivars to water deficit , Rachid Dahan

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Effects of unique cytoplasms on agronomic, physiological and seed quality traits in soybean , Steven Scott DeBroux

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Paired prairie and cultivated soils: soluble organics and nitrogen dynamics , Thomas Henry DeLuca

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Fungal contributions to soil aggregation and soil quality , Neal Samuel Eash

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Breeding for improved seed production in rhizomatous tall fescue germplasm, Samuel Nana Flomo

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Genetic variation within populations used in maize (Zea mays L.) breeding , Myron Ossie Fountain

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Ridge characteristics as influenced by ridge building methods , Mohammadreza Ghaffarzadeh

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Identification of quantitative trait loci (QTL) in maize on the basis of F3 and testcross progeny performance , Thomas Lane Gocken

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Turnover of nitrogen during decomposition of corn and soybean residue in soil , Cary James Green

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Spray deposition and drift during postemergence herbicide applications to turfgrass and annual flowers , Harlene Mae Hatterman-Valenti

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Molecular marker-facilitated study of quantitative trait loci in a maize population , Sue Gau Jarboe

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Mycorrhizae (VAM) of soybean in soil toposequences and mycorrhizal dependency of corn and soybean cultivars , Samina Khalil

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Release and phytoavailability of phosphorus in soils treated with phosphate rocks and organic acids , Kokoasse Kpomblekou-Ademawou

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RFLP markers and genetic linkage of oil content and hypodermis color in sunflower seed (Helianthus annuus L.), Alberto Javier Leon

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Growth index inheritance, selection and trait associations in pearl millet , Peter James Lynch

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Nitrogen management for corn after corn and corn after soybean , Brian George Meese

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Cytoplasmic effects on agronomic traits, seed quality traits and amino acid composition in soybean with unique cytoplasms as determined by RFLP analysis , Rhonda Leah Miller

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Recurrent selection for protein yield in oat , Hal Stuart Moser

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Interrelationships among water, air, and chemical transport properties of soil , Mohamad Zaki Mousli

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Influence of reduced palmitate content on agronomic and seed traits of soybean, Xavier Ndzana

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Restriction fragment length polymorphism in sorghum (Sorghum bicolor (L.) Moench): genetic map construction and analysis of quantitative traits , Messias Gonzaga Pereira

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Long-term cropping system and nitrogen management effects on soil properties , Clay A. Robinson

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The impact of climate change on the Great Plains low-level jet , Richard Warren Turner

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Genetic diversity analysis of a set of public maize hybrids , Thomas Robert Williams

Theses/Dissertations from 1992

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Characterization of Bradyrhizobium japonicum serocluster 123 member isolates native to Iowa soils , Yousef Aharchi

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Recurrent selection for lodging resistance in oats , Moh'd M.M.T Al-Ajlouni

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Relative performance of testers to identify elite lines of corn (Zea mays L.) , Justo Salvador Castellanos

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Parent selection to maximize heterosis expression in soybean (Glycine max L. [Merr.]) , Francisco Jonathan Cerna

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Transformations and movement of anhydrous ammonia-derived N in soils , Joel Glenn Davis

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Soybean residual effects on a subsequent maize crop , Edgar S. Escuro

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Harvest management and cultivar effects on dinitrogen fixation and nitrogen transfer in forage legume-grass mixtures , Dale Eddy Farnham

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Molecular-marker-facilitated investigation of host-plant response to Exserohilum turcicum in maize (Zea mays L.), Peter John Freymark

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Simulation of water transport in the soil-plant-atmosphere system , Yimei Guo

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Genetic linkage in soybean : Linkage Group 8, Kimberly Haack

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Seed maturation and drying in sweet corn (Zea mays L.) endosperm mutants , Henry R. Mloza-Banda

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Nitrogen fertilizer requirements of corn after alfalfa , Thomas Francis Morris

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Nuclear genetic transformation and a restriction fragment length polymorphism analysis of soybean [Glycine max (L) Merr] mitochondrial genetics , Salah Mohamad Muhawish

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Effect of planting date, population density, genotype and seed quality on growth, grain yield and yield components of corn (Zea mays L.), Bonaventure Kaswana Phiri