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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 3419 for “"Crop"”.
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Crop Canopy Effects on Kochia Establishment in Crop Fields
… address the issue of resistant kochia in crop fields, we carried out studies to understand the biology of kochia in different crop environments. The goal of this study was to quantify the effect of crop canopies, tillage and residue on kochia germination, survival and seed production in …
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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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Risk in agriculture : a study of crop yield distributions and crop insurance
Agriculture is a business fraught with risk. Crop production depends on climatic, geographical, biological, political, and economic factors, which introduce risks that are quantifiable given the appropriate mathematical and statistical methodologies. Accurate information about the nature of …
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Decomposition of Crop Residues
Crop residues are the prime source of energy and nutrients affecting soil biological, chemical and physical processes, including organic matter formation. This study examined the effects of management on the rate of decomposition of crop residues in the laboratory and field. It also measured the …
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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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Measurement of Cover Crop Evapotranspiration and Impacts on Water Management in Crop Production Systems
<p>Cover cropping is a popular agriculture practice that provides many benefits to the soil and subsequent cash crops. However, eastern South Dakota lies in a transitional climatic zone between the subhumid climate to the east and the semiarid climate to the west, an area susceptible to both excess …
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Specialty crop sensitivity to dicamba
… (Solanum tuberosum) are important specialty crops, accounting for 4% of the total agricultural crops sales in 2019 (USDA-NASS). Production continues to grow, as the sales these three crops generated increased from 30% of all specialty crop sales in 2012 to 47% in 2019 (USDA-NASS). During this …
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Risk management in crop farming
… the financial impacts caused by natural hazards, crop insurance is an appropriate tool (Di Falco et al., 2014). In addition to crop insurance purchase, to maximize agriculture’s mitigation potential regarding to weather-related risks, there is a need for investments in technological innovation and …
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Crop Rotations for Sustainable Intensification
This dissertation investigates how crop rotation design and nitrogen (N) management can contribute to achieving high and stable yields while improving nitrogen use efficiency (NUE) in arable cropping systems. The research is based on a long-term crop rotation experiment conducted at a high-yielding …
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The Evolution of Natural Plant Communities through Crop Migration and Crop-to-weed Gene Flow
… demand for food and biofuels, the efficiency of crop production has become vital to assuring food security. Genetically engineered (GE) crop varieties are broadly thought to be a solution for improving the efficiency of crop production, but concerns regarding their release have heightened as more …
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Crop Farming in Aeroponic Indoor System
L'abstract è presente nell'allegato / the abstract is in the attachment
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Deep Learning Based Crop Row Detection
Detecting crop rows from video frames in real time is a fundamental challenge in the field of precision agriculture. Deep learning based semantic segmentation method, namely U-net, although successful in many tasks related to precision agriculture, performs poorly for solving this task. The reasons …
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Some Economic Aspects of Crop Production
Made available in DSpace on 2014-12-04T21:47:42Z (GMT). No. of bitstreams: 1 0003990.pdf: 10444107 bytes, checksum: d172930718f5269675a13dc3547632c1 (MD5) Previous issue date: 1952
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A crop phenology model for Windows
An object oriented model for simulating crop and weed phenology under field conditions has been developed for educational and research purposes. The model can be used to study seasonal dynamics of crop and weed canopies which are important in controlling crop photosynthesis, evapotranspiration, …
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Agricultural Crop Monitoring with Computer Vision
Precision agriculture allows farmers to efficiently use their resources with site-specific applications. The current work looks to computer vision for the data collection method necessary for such a smart field, including cameras sensitive to visual (430-650~nm), near infrared (NIR,750-900~nm), …
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Evaluation of Tillage, Crop Rotation, and Cover Crop Impacts on Corn Nitrogen Requirements in Southeastern South Dakota
… while also considering effects from cover crops and crop rotation. This was a two year study conducted at the SDSU Southeast Research Farm near Beresford, SD; it was superimposed on a long-term rotation and tillage study established in 1991. Treatments included applied N rates of 0, 40, 80, …
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Preferences of Louisiana agronomic crop producers and crop consultants regarding sources of information related to agricultural production
… of information related to agronomic crop production is crucial to the success of the agriculture industry in Louisiana. This information is distributed by various sources and through multiple methods. The primary purpose of this study was to determine the preferences of Louisiana …
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Crop residue management effects on crop production, greenhouse gases emissions, and soil quality in the Mid-Atlantic USA
… L.) residues have particular promise given these crops are widely grown and their cellulosic fractions present a captured resource as a co-product of grain production. Annual systems also offer the ability to change crops rapidly in response to changing market demands. However, concerns exist …
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Management and manurial aspects of crop lodging
Digitized by Kansas Correctional Industries
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