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Theses/Dissertations from 2002

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Liquid swine manure as a nitrogen source for corn and soybean production, Sudipta Rakshit

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Methods for enhancing seed germination of eastern gamagrass, Carla Jeanne Rogis

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Genetic analysis of ear length and correlated traits in maize , Andrew Jon Ross

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Quantitative trait loci for soybean seed yield in elite and plant introduction germplasm , Matthew David Smalley

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Geostatistical use of indirect methods for improving sampling accuracy in pastures, Alison Beth Tarr

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Characterization of acetolactate synthase resistance in common sunflower (Helianthus annuus) , Anthony D. White

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Backcross introgression and two-stage testing for conversion of improved tropical germplasm to temperate environments , Freeman Callaway Whitehead

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Uniform and variable-rate fertilizer and manure phosphorus for the corn-soybean rotation , David John Wittry

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Remote sensing of nitrogen deficiencies in cornfields , Jun Zhang

Theses/Dissertations from 2001

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Field estimation of soil hydraulic and chemical transport properties , Salem Ali Matar Al-Jabri

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Factors influencing weed spatial distribution, Bruce Allen Battles

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Variable-rate liming for the corn-soybean rotation, Agustin Alberto Bianchini

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Evaluation of selected factors that may influence the application of electromagnetic induction technology to soil science investigations in Iowa , Eric Charles Brevik

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Changes in embryo drying rates, the alignment of lipid bodies along the plasma membrane, and dehydrin-like proteins during the acquisition of desiccation tolerance in maize seed , Leobigildo Cordova-Tellez

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Effects of a long-term recurrent selection program on the genetic structure of the BSSS maize population , Paulo Evaristo de Oliveira Guimarães

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Dividing cornfields into soil management units for nitrogen fertilization , Jason W. Ellsworth

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Effects of root temperature during the grain fill stage on nutrient uptake and reproductive development in soybeans, Brooks Edward Engelhardt

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Response to 13 cycles of reciprocal full-sib recurrent selection in the BS10 and BS11 maize (Zea mays L) populations , Benjamin Aaron Ford

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The effects of intercropping forages on tree establishment and growth, DeAnn Renee Davis Frederick

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The structure-function relationships of maize starch synthase, Zhong Gao

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Organization and expression of a resistance gene cluster in soybean , Michelle Anne Graham

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Association of elevated palmitate with agronomic and seed traits of soybean, Mark Francis Hayes

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Epistasis for agronomic traits in elite maize hybrids, Lori Lynn Hinze

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Influence of seed bank augmentation on performance of metolachlor, David Kariuki Kagima

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Identification of quantitative trait loci associated with cell wall components and resistance to the European corn borer (Ostrinia nubilalis (Hübner)) in maize (Zea mays L.) , Matthew David Krakowsky

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Evaluation of a collaborative approach to mediate conflict between parties with interests in wildlife and livestock in Colorado , Gina Marie McAndrews

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Rathbun Lake Watershed assessment and water quality implications of switchgrass biomass production, Jerome Gerard Neppel

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Row width, plant population, and corn (Zea mays L) hybrid effects on canopy spectral characteristics, plant traits, and grain yield , Steven Robert Paszkiewicz

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Comparison of half-sib and full-sib reciprocal recurrent selection and their modifications in simulated populations , Baminihennadege Laknath Peiris

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Response to S1 recurrent selection and estimation of genetic parameters in effective population sizes of the BS11 maize population , Kebede Mulatu Ponta

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The Effect of Soil properties on Corn Yield Spatial Variability and the Nature of Coarse-Textured Sediments in a Mollisol Catena on the Des Moines Lobe, Daniel James Pulido

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The effect of planting date, hybrid, row spacing, and starter fertilizer on corn growth and development, Philip Sheridan Ramsel

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Heterosis in alfalfa: a study of inter and intra Medicago sativa subsp. sativa and Medicago sativa subsp. falcata crosses, Heathcliffe Riday

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The 1Dx5 high molecular weight subunit gene from wheat in transgenic maize , Varaporn Sangtong

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Genetic diversity of North American popcorn and its relationship with Mexican and South American popcorns , Amalio Santacruz-Varela

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Genetic analysis of reproductive traits in soybean [Glycine max (L) Merr] , I. Made Tasma

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Predicting spatial patterns of corn yield response to fertilizer nitrogen , Susan Eileen White

Theses/Dissertations from 2000

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Arylamidase activity of soils , Verónica Acosta-Martínez

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Early season losses of fertilizer nitrogen during corn production , Kipling Shane Balkcom

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Corn response to zinc in Iowa, Anna Dierickx Bickel

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Field and laboratory investigations of solute transport through soil , Francis Xavier McKeon Casey

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The use of atmospheric parameters to account for warm season precipitation variability across the grain-producing region of the US , Paul Stephen Castleberry

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Differentiating M. sativa subsp. sativa and subsp. falcata using molecular markers, Patricia Cazcarro-Ruiz

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Selection for high [beta]-glucan content in oat grain , Cuauhtemoc Tarcicio Cervantes-Martinez

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Near-infrared reflectance spectroscopic measurement of soil properties , Cheng-Wen Chang

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Planting date, row spacing, and seeding rate effects on soybean yield and yield components, Ryan Neal Clayton

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Genetic and environmental effects on natto quality characteristics of soybean , Chandler William Geater

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Evaluation of protein quality in various forage legumes following a freezing event, Wendy Jo Hartmann

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Anthropogenic influences on American Indian agricultural soils of the Southwestern United States , Jeffrey Allan Homburg

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Genetic variability for seed size of two-parent and three-parent soybean populations, Susan Laura Johnson

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Mobility and bioavailability of heavy metals in selected soils of Iowa and Nigeria , Monday Ochu Mbila

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Molecular studies for linkage analysis and determination of quantitative trait loci (QTL) for acid soil tolerance in maize (Zea mays L.) , Alejandro Alberto Navas

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Soybean yield, yield components, seed quality, dehydrin-like proteins, soluble sugars, and mineral nutrients in response to drought stress imposed prior to severe stress , Nezar Husein Samarah

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Family and individual line selection for palmitate, saturates, linolenate and seed yield of soybean , Leon George Streit

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Interactions and transformations of chlorpyrifos in aqueous and colloidal systems , Jigang Wu

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Ensemble tests of a regional climate model using a perturbed cumulus parameterization scheme , Zhiwei Yang

Theses/Dissertations from 1999

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Effect of soil pH on phytoavailability of nitrogen in biotechnology by-products and animal manures , Fahad Mohamad Alromian

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Fertilizer management in no-tillage corn and soybean , Samuel Saaka Jeduah Buah

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Selection for soybean seed yield with molecular markers , Joseph Richard Byrum

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Genetic mapping and analysis of quantitative trait loci (QTL) in maize for cell wall components and for resistance to stalk tunneling by the European corn borer , Andrea Josefina Cardinal

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Evaluation of recurrent selection in Leaming and Midland maize populations , Marcelo Javier Carena

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Conversion of elite subtropical maize germplasm to temperate environments , Homer Gene Caton

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Observed and predicted phenotypic effects of inbreeding in the BS13(S)C0 maize population , Jode Warren Edwards

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Weeds/weed seedbank and soil fungi responses to tillage and cropping systems , Joel Felix

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Soil testing and plant analysis to optimize nitrogen management in manured cornfields , David Jay Hansen

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Legume establishment and persistence at sites varying in landscape position, grazing method, and soil characteristics , Keith Richard Harmoney

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Variation in alfalfa (Medicago sativa L.) for germination and seedling vigor at suboptimal temperatures: and laboratory and field response to selection within six alfalfa populations , Kathy Lynn Esvelt Klos

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Human impacts on soils and geomorphic processes on the Des Moines Lobe, Iowa , Michael E. Konen

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Nicosulfuron tolerance and population dynamics of woolly cupgrass (Eriochloa villosa) , Ming-Chung Liu

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Interaction of rapeseed (Brassica naphus L) residue management and smother crops for weed control in corn (Zea mays L.) and soybean [Glycine max (L) Merr] , Juan Lorenzo Medina Pitalua

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Assessment of plant introductions for increasing the genetic variability of soybean populations , James Mark Narvel

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Effects of stress temperatures of germination on polyamine titers of soybean seeds , Renan Pineda Mejia

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Estimation of soil water content and resident and effluent solute concentrations using time domain reflectometry , Fulin Shen

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Evaluation of forage yield, quality and canopy development of various species of amaranths harvested at different stages of development , Byron Barrington Sleugh

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Dynamics of biosolids-derived phosphorus in a Mollisol , Yaobing Sui

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Growth and water relations of Bt and non-Bt corn plants subjected to soil moisture stress , Seydou Brehima Traore

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Modeling crop response to nitrogen , Nanchang Yang

Theses/Dissertations from 1998

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Dynamics of maize endosperm development , Anthony Onwuli Iheanyi Anaele

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Genetic analysis of quantitative trait loci with the early generations of an elite, single-cross maize population , Dwi Asmono

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Phosphorus and potassium placement for corn and soybean managed with two conservation tillage systems, Daniel W. Barker

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Phosphorus and potassium management for corn and soybeans in conservation tillage , Rogério Borges

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Linkage disequilibrium in maize F2 populations , Kevin Allen Cook

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Evaluation of natural enemies released for the biological control of purple loosestrife in Iowa, Anthony B. Cortilet

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Characterization of the apical ear mutant of maize: preliminary steps toward an ideotype , Abel Gil-Muñoz

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Effective population size, genetic variability, and gains from recurrent selection in the BS11 maize population , Peter S. Guzman

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Characterization of foxtail (Setaria spp) seed production and giant foxtail (S faberi) seed dormancy at abscission , Milton John Haar

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Foliar fertilization of soybeans at early vegetative stages , Mazhar Ul Haq

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Cytogenetic and linkage studies with translocations in soybean [Glycine max (L) Merr] , Anthony Assibi Mahama

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Distribution and mobilization of sulfur during soybean reproduction , Seth Lon Naeve

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Sink-pulled simulation of the maize crop , Samiha Abou El-Fetouh Hamed Ouda

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Localized soil compaction and soil doming of the fertilizer injection zone to control nitrate leaching , Daniel Eric Ressler

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Biotechnology by-products and animal manures as sources of phosphorus for plants , Edy Sigit Sutarta

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Analysis of responses to recurrent selection in the BS11 maize population , Roger Alan Weyhrich

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Evaluation of soil sampling strategies for soil tests and of variable-rate fertilization for phosphorus in Iowa soils, David John Wittry

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Anaerobic digestion of various mixtures of corn stover and swine manure on methane production, Shouli Savitri Yusuf

Theses/Dissertations from 1997

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Genetic analysis of quantitative trait loci with inbred and hybrid progeny of maize , David Frederick Austin

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Soil sampling for nitrate in late spring , Kiam-Chung Chin

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Stability analysis of single-cross hybrids of maize (Zea mays L.) , Jean Barbara Cormack

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Agronomic performance and nutritive value of soybean lines developed for forage , Witjaksana Darmosarkoro

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Seed development of shrunken-2 sweet corn (Zea mays L.) and the use of film coating and field chemical applications to improve seed quality , Xianming Duan