Theses and Dissertations - Department of Soil & Crop Sciences
Recent Submissions
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Putting microbial polyphenol metabolism on the map: using microbiome science to revise soil chemical paradigms
To view the abstract, please see the full text of the document. -
Impacts of deficit irrigation on crop production and sustainable soil management, The
Growing issues of water scarcity around the planet highlight a need for more efficient use of agricultural water. Deficit irrigation (DI) offers a promising option to reduce water use with relatively small impacts on crop ... -
Analysis of wheat spike characteristics using image analysis, machine learning, and genomics
Understanding genetics regulating yield component and spike traits can contribute to the development of new wheat cultivars. The flowering pathway in wheat is not entirely known, but spike architecture and its relationship ... -
Soil carbon and nitrogen pools under perennial forage
To view the abstract, please see the full text of the document. -
Cyanobacteria biofertilizer solubilizes soil phosphorus and alters soil microbial communities
To view the abstract, please see the full text of the document. -
Genetic variation among inland and coastal populations of Distichlis spicata sensu lato (poaceae) in the western United States
The taxonomic status of the North American endemic grass Distichlis spicata subsp. striata has been in flux for more than a century. Distichlis spicata hosts the larval stage of a federally endangered butterfly and is being ... -
Characterizing host genetic resistance to Wheat streak mosaic virus (WSMV) and Fusarium wilt disease
Crop production is limited by a variety of biotic stresses caused by pathogens. This study focuses on wheat streak mosaic disease in wheat, caused by the viral pathogen Wheat streak mosaic virus (WSMV), and Fusarium wilt ... -
Understanding the dynamics and management of organic nutrient sources in smallholder farming systems: an interdisciplinary approach
Smallholder farmers often face challenges in managing soil fertility due to limited inputs and high spatial variability on their farms. In many places, soil fertility, and overall soil health, is on the decline, and ... -
When the wells run dry: soil organic carbon dynamics during the transition from irrigated to dryland cropping systems
In many parts of the world, irrigation must decrease due to declining water availability and increased demand from other water users. The Ogallala Aquifer, one of the biggest aquifers in the world, is one example where ... -
Varieties of winter wheat in eastern Colorado require different n recommendations for achieving grain yield and protein content
To view the abstract, please see the full text of the document. -
Genetic and metabolomic analyses of barley and cowpea: implications on quality and nutrition of finished foods
The finished foods of a cereal (barley) and a legume (cowpea) were subjects of this thesis and analyzed in two separate studies. High quality barley that meets malting standards, is economically worth billions each year ... -
Soil textural control over decomposition and soil organic matter dynamics
Soil texture is an important factor that influences litter decomposition and soil organic matter (SOM) dynamics, but few experiments have addressed specific mechanisms. Even less work has been done to answer the question ... -
Feeding the soil to feed the planet: soil health outcomes from novel amendments to residue management
Healthy soils are the foundation for the continued capacity of agricultural lands to supply essential ecosystem services while also meeting demands for food, fuel and fiber. From academia to policymakers and other key ... -
Roles of residue management, microbes and aggregation in soil carbon stabilization under semiarid, irrigated corn
With atmospheric carbon dioxide levels continuously on the rise, it is critical that we focus our efforts on sequestering carbon (C) to slow global warming. To maximize these efforts, it is furthermore important to understand ... -
Breeding hard winter wheat (Triticum aestivum L.) for high grain yield and high grain protein concentration
High grain yield (GY) is the primary selection target in commercial hard winter wheat (Triticum aestivum L.) breeding programs, with milling and bread-making quality as important secondary selection targets. Grain protein ... -
Identifying grass-legume bicultures to increase above and belowground biomass production and improve traditional fallows in crop rotations of the Andean Highlands
In the high Andes of Peru, intensification of crop rotation and agricultural land-use is reducing the practice and duration of traditional fallow (based on natural establishment of native vegetation). These fallows represent ... -
Whole is greater than the sum of the parts, The: piecing together microbial methylated amine metabolism
To view the abstract, please see the full text of the document. -
Characterization and quantitative trait loci (QTL) analysis for wheat stem sawfly (Hymenoptera: Cephidae) resistance in winter wheat
The wheat stem sawfly (Cephus cinctus) (WSS) has quickly become a major pest of Colorado wheat production over the past ten years. Prior resistant cultivars have relied on the expression of a solid-stemmed trait (Qss.msub-3BL) ... -
Soil phosphorus availability and transformations following biosolids applications
Land application of biosolids has many benefits such as providing nutrients for plant growth as well as adding organic matter to soil. However, there is the potential for negative impacts due to the high concentration of ... -
Soil organic matter as a nitrogen source for Brassica napus
Decreasing nitrogen (N) fertilizer losses from agricultural systems is a major focus in sustainable agriculture research. Most research to date has focused on reducing and managing N fertilizer additions in time and space. ...
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