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 79 for “"Crop management"”.
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Cover crop management strategies for driver weeds in Kansas
… the north central region to understand how cover crops influence weed suppression and seedbanks. As cover crops increase on farm production hectares, management strategies must be evaluated to discover which ones result in optimum weed control. The effects of cereal rye cover crop on Palmer …
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A Field Information System for Site-Specific Crop Management
Site-specific crop management (SSCM) is an old idea which new technology has given renewed impetus within the last decade. In this thesis, several theoretical analyses on SSCM were done; these were the benefits and costs analysis, cell size selection, and the blocking of spatial soil data.
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Advanced data analysis methods to optimize crop management decisions
… of knowledge of limiting factors and optimal management practices at the field level is one of the main reasons for the inefficient use of inputs and low productivity, profitability, and sustainability of agricultural systems. Agricultural research aims to update and improve crop management …
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Crop Management for the Greater Utilization of Symbiotically Fixed Nitrogen
… at Urbana, Illinois, to evaluate different crop management systems to increase the utilization of symbiotically fixed nitrogen. The first 3-year study of simulated aerial interseeding of forage legumes, alfalfa, red clover, and sweetclover into standing soybeans was undertaken to examine the …
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Optimizing crop management with reinforcement learning, imitation learning, and crop simulations
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-04-12 without embargo terms
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Learning-based crop management optimization using multi-stream convolutional neural networks
Improving crop management is an essential step towards solving the food security challenge. Despite the advances in precision agriculture, new methods are needed to create decision-support systems to help farmers increase productivity while accounting for environmental impacts and financial risks. …
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Development of a crop model to examine crop management and climate change in Senegal
Frequent droughts and sub-optimal crop management have been identified as the principal constraints on agricultural intensifcation in the Sahel. A new model, the Crop Model for Sahelian Adaptation Studies (CROMSAS), was developed to examine the influence of climatic variability, climate change and …
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An assessment of the training needs of crop management research personnel in developing countries
… of the study is to determine the status of crop management research and crop management researchers in NARS, the most appropriate measures to take to address deficiencies, and the degree of congruence between the perceptions of the various stakeholder groups on these issues.
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Reconstructing and interpreting ancient crop management practices : ethnobotanical investigations into traditional dryland farming in northern Jordan.
… an investigation into the effects of different crop management practices on weed composition. The aim of this research is to enable the reconstruction of ancient crop management practices from archaeological weed assemblages and to inform archaeological interpretation, i.e. to interpret what the …
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Evaluating the interactions of crop management, carbon cycling, and climate using Earth system modeling and remote sensing
Crop management practices, such as soil tillage and crop residue management, are land management activities with potentially large impacts on carbon (C) cycling and climate at the global scale. Improvements in crop management practices, such as conservation tillage or 'no-till' (NT), have been …
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The exploration of potato-associated bacteria in the Central Andean Highlands and their application in integrated crop management systems
Potato is the most important food crop after wheat and rice. A changing climate, coupled with a heightened consumer awareness of how food is produced and legislative changes governing the usage of agrochemicals, means that alternative more integrated and sustainable approaches are needed for crop …
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The critical seed-filling period duration is dependent on soybean planting date and cultivar maturity selection: implications for crop management
… decades of genetic improvement concurrent with crop management research has resulted in a clear consensus among midwestern university researchers that soybean yield potential is increased when the crop is planted in late April and early May. These findings have encouraged earlier planting, but …
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Influence of cover crop management on Armyworm, Pseudaletia Unipuncta (Haworth) seasonal abundance, natural enemies, and yield in no-till corn, and diurnal abundance and spatial distribution of Armyworm
… cereale</i> L.) used as a winter cover crop was killed by paraquat or by mowing with a bushog. In subsequent no-till corn, early season armyworm, <i>Pseudaletia unipuncta</i> (Lepidoptera: Noctuidae) abundance was lower in the mowed treatment compared with the sprayed treatment. Total …
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Multi-ISFET sensor system for soil analysis
Site-specific crop management aims to improve production efficiency by adjusting crop treatments, especially fertilizer and chemical application, to local conditions within the field. The implementation of spatially selective field operations is dependent on field mapping of the variations in soil …
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Maximizing corn yield potential through proper rate, placement, and timing of nitrogen fertility
… methods and genetics in combination with crop management factors has led to ever-greater corn yields. These crop management factors include: hybrid, planting population, nitrogen (N) fertility, additional nutrient fertility, and foliar protection; and used together can increase grain yield …
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Broad-scale Assessment of Crop Residue Management Using Multi-temporal Remote Sensing Imagery
… tillage. Alternatively, conservation tillage management can mitigate adverse environmental impacts of tillage, such as soil and water degradation. Adoption of conservation tillage has continued to increase since its first introduction, which raises questions of when and where it is practiced. …
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Management and assessment of winter cover crop systems for supplying nitrogen to corn in the mid-Atlantic region of the United States
Research examining cover crop-corn systems focuses on corn planted into chemically desiccated cover crop residue using no-tillage practices. Two field studies including rye (Secale cereale L.), hairy vetch (Vicia villosa Roth), and rye+hairy vetch cover crops were established to determine the …
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Componentes de crescimento e produção de três cultivares de soja utilizando diferentes adubações
… advances and techniques appropriate crop management applied by producers. The aim of this study was to evaluate the agronomic characteristics and yield components of three soybean cultivars for different fertilizations. The experiment was carried out from December 2012 to April 2013 …
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Applications of Machine Learning in Apple Crop Yield Prediction
… to predict yield in the apple industry. Crop yield prediction is important because it impacts resource and capacity planning. It is, however, challenging because yield is affected by multiple interrelated factors such as climate conditions and orchard management practices. Machine …
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Strip-till flue-cured tobacco production in Virginia
… tabacum L.) is an intensively cultivated crop that typically receives four to eight primary tillage passes before being transplanted on a raised row-ridge. Strip-tillage, a conservation tillage system that only requires tilling a small strip before transplanting, has been shown to be …
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