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 8 of 8 for “"Crop height"”.
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Development of UAV-based lidar crop height mapping system
Crop height monitoring is important to appropriate field management. Previous studies have indicated that a Light Detection and Ranging (LiDAR) sensor was capable of accurate and fast data collection. As technology of Unmanned Aerial Vehicles (UAV) advanced, the airborne LiDAR system became a …
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Bridging the Gap Between Lidar, Thermal, and Multispectral Remote Sensing for Irrigation Scheduling Applications
Irrigation reduces the soil moisture deficit in crop production; however, the Canadian Prairies is a semi-arid landscape with limited water resource availability, requiring careful application of water management practices. This thesis studies methods to reduce irrigation water consumption in …
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Intra-field Nitrogen Estimation for Wheat and Corn using Unmanned Aerial Vehicle-based and Satellite Multispectral Imagery, Plant Biophysical Variables, Field Properties, and Machine Learning Methods
… the right rate, time, and place depends on the crop type, desired yield, and field conditions. The objective of this study is to use Unmanned Aerial Vehicle (UAV) multispectral imagery, PlanetScope satellite imagery, vegetation indices (VI), crop height, leaf area index (LAI), field topographic …
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Crop monitoring and yield estimation using polarimetric SAR and optical satellite data in southwestern Ontario
… been proven as an efficient source to extract crop information and monitor crop growth conditions over large areas. In local- to subfield-scale crop monitoring studies, both high spatial resolution and high temporal resolution of the image data are important. However, the acquisition of optical …
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Towards 3D Crop Phenotyping of Above- and Belowground Grain Sorghum Plant Traits Using Airborne Mounted Multispectral Camera, TLS, and GPR Remote Sensing Technologies
… being used in agriculture with a focus on crop phenotyping and nondestructive plant health monitoring. Climate change in the western United States has led to increasing aridity, and reduced precipitation and thus a growing need for emerging varieties of drought-tolerant crops and technology …
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FACTORS INFLUENCING A PETAL-BASED FORECASTING SYSTEM FOR SCLEROTINIA STEM ROT OF CANOLA
… during the afternoon than the morning in 4 of 7 crops. Increases from morning to afternoon ranged from 0.3 to 46%; reductions ranging from 0.5 to 14%were also observed on a few days. The pattern in petal infestation probably resulted from periodicity in ascospore discharge related to several …
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Intensive management of barley in Saskatchewan
… was unaffected by ethephon. Ethephon reduced crop height an average 10% in all tests and the number of kernels head-1 was reduced in seven tests. Samson barley was not as prone to lodging as the other varieties tested. Propiconazole increased grain yield by an average of 10% in Bonanza and …
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Water use of mature pecan orchards under semi-arid conditions
… fruit production, and as a result most orchard crops depend on supplemental irrigation, especially in areas in South Africa, where rainfall patterns are unpredictable and sparsely distributed. Through accurate quantification or estimation of crop water use or evapotranspiration (ET), the need …