Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 467 for “"agronomic"”.
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Epistasis for agronomic traits in elite maize hybrids
<p>Certain maize (Zea mays L.) inbred lines are more successful than others in forming elite hybrids. This study was conducted to determine whether epistatic interactions play a significant role in hybrid performance, whether an epistatic or non-epistatic model satisfactorily explains the variation …
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Agronomic and nutritional considerations for increased soybean productivity
… require a comprehensive understanding of the agronomic, nutritional, and genetic factors that influence soybean yield. Despite recent agricultural innovations, there is a common perception that soybean yields have reached a plateau. While most producers overlook the fertility needs of soybean, …
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Innovations in agronomic management to improve maize productivity
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-11-15 without embargo terms
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MEASURING AND MODELLING COVER CROP GROWTH AND AGRONOMIC EFFECTS
… information concerning both crop management and agronomic effects, as well as winterkill termination occurrence frequency and efficiency in temperate climates. Dynamic cropping systems simulation models can be used to determine crop management scenarios convenience for a wide range of weather and …
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Genetic analysis of agronomic and enological traits in grapevine
… between Graciano x Tempranillo was studied for14 agronomic traits, 11 enological traits and 5 seed traits for three consecutive years. All traits presented transgressivesegregation and continuous variation. Significant correlations among traits were observed but most associations were weak.Seven …
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The agronomic and economic performance of flax in Iowa
<p>Demand for flax (Linum usitatissimum L.) has increased due to the discovered health benefits of adding flaxseed to human diets. A facility in northwest Iowa that processes organic flaxseed for oil provides a viable market for organic growers in the Midwest. Organic growers are particularly …
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Agronomic performance of soybean [Glycine max (L.) Merr.] hybrids
… (2) to estimate heterosis for yield, and other agronomic characteristics of the hybrid populations. Parental genotypes were male-sterile lines and a group of male parents selected for their agronomic performance. The few positive high-parent heterosis (HPH) and mid-parent heterosis (MPH) values …
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A physiological basis to crop improvement and agronomic development
… genotypes combining high yielding potential and agronomic traits of superior adaptation, and for understanding yield limiting factors. Yet, direct measurement of physiological variables is often difficult or expensive; as an example, measuring plant water status in the field is problematic, with …
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Industrial hemp agronomic management for grain, fiber, and forage
This research involved testing several aspects of industrial hemp (Cannabis sativa L.) production, including the impact of tillage on seed and fiber production, optimal harvest time for seed yield and quality, the response of seed yield to nitrogen fertility rates, and the potential of hemp as a …
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Biological and Agronomic Aspects of Two Insect Predators of Switchgrass
<p>Switchgrass (Panicum virgatum L.) is considered a potential model for an alternative fuel source in North America. Recently, two insect pests of switchgrass have been identified. The switchgrass moth [Blastobasis repartella (Dietz): Lepidoptera: Coleophoridae] feeds in the basal internodes and …
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The agronomic and molecular characterisation of Rht8 in hexaploid wheat
… and was more resistant to root-lodging at agronomically-relevant N levels. In the UK, the Rht8 NIL showed a 10% yield penalty due to concomitant reduction in grain number and spike number whereas grain weight and harvest index were not significantly different to the tall NIL. The yield …
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Agronomic management and biostimulants to increase corn and soybean productivity
… two studies. Exploring the Interaction of Agronomic Management and a Plant Growth Regulator to Increase Productivity of Soybean Biostimulants are becoming the newest products of interest in the agriculture industry, due to the wide array of influences on row crops and multiple modes of …
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Improved agronomic management of corn and soybean to increase productivity
… market, it is up to them to implement whatever agronomic management practices they wish to use. A drawback to these increases in soybean and corn grain yields is that nutrient demands have increased as well. To combat higher nutrient demands, innovative fertilizer sources as well as advanced …
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Agronomic management to improve corn productivity under high-yielding environments
… of this research was to quantify and predict how agronomic and nutritional management practices can be employed to improve corn productivity under high-yielding environments which encompasses three research areas: How Does Plant Spatial Arrangement Affect Plant Architecture, Growth and …
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Agronomic and Nitrate Leaching Impacts of Pelletized versus Granular Urea
Agronomic and water quality impacts of urea particle size were evaluated through field and laboratory experiments and mathematical modeling. In a two-year field study, corn silage yield, corn nitrogen (N) removal, and nitrate-N (NO₃⁻-N) leaching from urea pellets (1.5 g each) and granules …
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Agronomic management of soybean with foliar manganese and apical meristem alterations
… soybean yield being dependent upon environment, agronomic management, and the interaction of genetics and management (Rowntree et al., 2013). Many farmers have overlooked the importance of incorporating management practices into their soybean production system, which indicates they may be missing …
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Genetic and agronomic approaches for improving nitrogen use and maize productivity
… in maize N use will require a combination of agronomic, breeding, and biotechnology approaches. A maize hybrid’s N use and productivity are influenced by its grain yield at low N (check plot yield; no fertilizer N applied), and its response (i.e., increase in grain yield) to fertilizer N …
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Enhancing efficacy of agronomic management of maize through synergies with biostimulants
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-09-01 without embargo terms
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