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United States Department of Agriculture

Agricultural Research Service

Research Project: Management Strategies to Sustain Irrigated Agriculture with Limited Water Supplies

Location: Water Management Research

Title: Ground-based thermal and multispectral imaging of limited irrigation crops

Author
item DeJonge, Kendall

Submitted to: Proceedings of the World Environmental and Water Resources Congress Conference
Publication Type: Abstract Only
Publication Acceptance Date: June 3, 2014
Publication Date: June 3, 2014
Citation: Dejonge, K.C. 2014. Ground-based thermal and multispectral imaging of limited irrigation crops. Proceedings of the World Environmental and Water Resources Congress Conference.

Technical Abstract: Ground-based methods of remote sensing can be used as ground-truth for satellite-based remote sensing, and in some cases may be a more affordable means of obtaining such data. Plant canopy temperature has been used to indicate and quantify plant water stress. A field research study was conducted in 2012 and 2013 on corn and sunflower with varying growth-stage based water stress. A “highboy” tractor equipped with an equipment platform suspended 6 m above the ground surface on a boom was utilized to efficiently enable users to collect remotely sensed data from all treatments and replicates, typically obtained twice per week near solar noon throughout the growing season. This remotely sensed data included above-canopy temperature and humidity, infrared canopy temperature, visible (red-green-blue) canopy imaging, infrared thermal canopy imaging in both years, and multispectral (green, red, near-infrared) detection and imaging in 2013 only. Results show significant differences in temperature and reflectance among treatments. On three days in 2013, multiple datasets were taken throughout the day to evaluate diurnal effects on the crop canopy.

Last Modified: 3/3/2015
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