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Management alternatives for urea use in corn and wheat production
(University of Missouri--Columbia, 2006)
Traditionally, urea has been incorporated to avoid losses of N by ammonia volatilization. However, this option is not available when topdressing wheat. The objective of this project is to evaluate several strategies designed ...
Four decades of change in an old-growth beech-maple forest in Indiana
(University of Missouri--Columbia, 2006)
agricultural landscape, the stand largely escaped direct anthropogenic effects during Euro-American settlement of the region during the mid-1800s. Currently, natural processes of competitive development, windthrow, gap replacement, and decomposition operate...
Agronomic and pest interactions in no-till corn and soybean wih fall versus spring herbicide applications
(University of Missouri--Columbia, 2006)
Fall herbicide applications have increased in popularity in recent years. Little is known of how fall herbicide applications impact soil conditions, insect populations, and winter and summer annual weed populations. Few ...
Understanding Arabidopsis ion homeostasis in the post-genomic era : assigning function to two proteins involved in iron metabolism
(University of Missouri--Columbia, 2006)
Two projects studying different aspects of iron deficiency in the model plant Arabidopsis thaliana are detailed here. The first project describes the isolation and characterization of the Arabidopsis frd4-1 and frd4-2 ...
The role of the giant Canada goose (Branta canadensis maxima) cecum in nutrition
(University of Missouri--Columbia, 2006)
Waterfowl are renowned for their ability to exploit a wide variety of food resources. They feed on fresh and marine water invertebrates, aquatic and terrestrial plants, and agricultural grains and crops. This nutritional flexibility has allowed them...
Habitual subsistence practices among prehistoric Andean populations: fishers and farmers
(University of Missouri--Columbia, 2006)
This research tested the hypothesis that it is possible to differentiate fishers from farmers using muscle marker patterns. Muscle markers are imprints (tuberosities, grooves, and/or bony projections) left on the skeleton ...
Response of natural and artificial pin oak reproduction to mid- and understory removal in a bottomland hardwood forest
(University of Missouri--Columbia, 2006)
This study was conducted to determine whether mid- and understory removal in combination with ground flora vegetation control would result in a sufficient increase in light to foster the development of pin oak (Quercus ...
Understanding reservation hunger : food acquisition and food security among the northern Cheyenne
(University of Missouri--Columbia, 2006)
The Northern Cheyenne represent a group that experiences poverty and hunger at an exceptionally high level. As an extreme case study, this project adds conceptually and methodologically to food provisioning literature by ...
Soil surface-seal measurement using high-resolution x-ray computed tomography (HRCT)
(University of Missouri--Columbia, 2006)
Rainfall on bare soil breaks soil aggregates, detaching particles, plugging pores and decreasing porosity in the top few mm of soil. This reduces hydraulic conductivity and increases runoff through a process known as surface ...
Elemental concentration changes in soil and stockpiled tall fescue leaves after liming
(University of Missouri--Columbia, 2006)
Tall fescue (Festuca arundinacea Schreb.) is the dominant forage in Missouri and grows primarily on acidic soils that possess little plant available phosphorus (P). Little is known about the effects of lime on the elemental ...
Biomass production of five populus clones, soil carbon and soil water content in a central Missouri floodplain
(University of Missouri--Columbia, 2006)
Five Populus clones in two short rotation 5 year plantations were tested for biomass production and associated soil C changes in the central Missouri floodplain under climatic conditions of the Midwest. A Populus deltoides ...
Effects of amending a gravel based growing medium with calcined clay on medium physical properties and growth of Gymnocladus dioicus seedlings
(University of Missouri--Columbia, 2006)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] The Missouri Gravel Bed (MGB) is a system that uses pea gravel with 10% sand (v/v) as a root growth medium, allowing bare root plants to be removed ...
Diagnosis, epidemiology and immunologic consequences of copper deficiency in calves
(University of Missouri--Columbia, 2006)
Copper is an essential micronutrient. Copper deficiency has been associated with disease states that decrease commercial beef production. Clinical manifestations of copper disease include anemia, diarrhea, long bone ...
Three essays on banking : agency, opacity, and fragility
(University of Missouri--Columbia, 2006)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Banks play a central role in the economy of the United States. As in most developed countries, banks in the United States are regulated to prevent ...
Impacts of suspended and deposited sediment on benthic invertebrates and fishes in a Missouri Ozark stream
(University of Missouri--Columbia, 2006)
Sediment is suspected in the decline of sensitive-aquatic organisms in the Osage River basin of Missouri. In this study, I monitored sediment dynamics and evaluated corresponding linkages with benthic invertebrate and fish ...
Biodiversity of ants (Hymenoptera: Formicidae) in restored grasslands of different ages
(University of Missouri--Columbia, 2006)
Grasslands are an endangered ecosystem. Unfortunately, few studies monitoring the health of these grasslands have included arthropods, thus leaving out a vital biodiversity component. Ants have been proven to be reliable ...
The effect of environment on seed composition of tofu and natto soybean cultivars
(University of Missouri--Columbia, 2006)
Composition of soybean seeds is important to manufacturers of tofu and natto food products. The effect of environment on seed composition of tofu and natto soybean cultivars was measured in Missouri in 2004 and 2005. The ...
Physiologic and metabolic interactions in the soybean/bradyrhizobium japonicum symbiosis
(University of Missouri--Columbia, 2006)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] The agronomically vital, nitrogen-fixing symbioses between soybean and the soil bacterium Bradyrhizobium japonicum is a model system for the study of ...
Relationship between participation in a residentially-based freshman interest group and degree attainment
(University of Missouri--Columbia, 2006)
Informed by the Tinto's (1993) model of institutional departure and Astin's (1993) input-environment-output model and concept of involvement, this dissertation reports the findings of a secondary data-analysis examining ...
Hydrology, vegetation and waterbird response to land management strategies in the San Luis Valley
(University of Missouri--Columbia, 2006)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] The distribution of wetlands in the San Luis Valley has been altered by human modifications that influence the timing, distribution and characteristics ...