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Remote sensing for evaluating crop water stress at field scale using infrared thermography: potential and limitations

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dc.contributor.authorTaghvaeian, Saleh, author
dc.contributor.authorChávez, José L., author
dc.contributor.authorAltenhofen, Jon, author
dc.contributor.authorTrout, Tom, author
dc.contributor.authorDeJonge, Kendall, author
dc.contributor.authorColorado State University, publisher
dc.date.accessioned2020-02-13T18:43:14Z
dc.date.available2020-02-13T18:43:14Z
dc.date.issued2013
dc.description2013 annual AGU hydrology days was held at Colorado State University on March 25 - March 27, 2013.
dc.descriptionIncludes bibliographical references.
dc.description.abstractOver the past few decades, the competition for freshwater resources has substantially increased in arid/semi-arid areas, exacerbating the pressure on the largest user of water, namely agriculture, to consume less water. However, reducing crop consumptive water use or evapotranspiration through water stress can have a negative impact on production economics if not precisely managed. Remote sensing of crop canopy temperature is a scientifically-based and easy-to-apply method that can be used at field scales to evaluate crop water status at or near real-time. In this study, thermal images of maize canopy under two deficit irrigation regimes were acquired using a hand-held thermal camera. The results showed that the low-frequency deficit irrigation treatment resulted in higher maize temperatures compared to the high-frequency deficit irrigation regime. A methodology for converting the temperature value of each pixel into a spatially variable crop water stress index (CWSI) is described. Within the low-frequency deficit irrigation treatment, estimated CWSI values were correlated with spatial variations in soil texture. Finally, the potential of infrared thermography and current limitations are discussed in detail.
dc.format.mediumborn digital
dc.format.mediumproceedings (reports)
dc.identifier.urihttps://hdl.handle.net/10217/201030
dc.identifier.urihttp://dx.doi.org/10.25675/10217/201030
dc.languageEnglish
dc.language.isoeng
dc.publisherColorado State University. Libraries
dc.relation.ispartofHydrology Days
dc.rightsCopyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright.
dc.titleRemote sensing for evaluating crop water stress at field scale using infrared thermography: potential and limitations
dc.title.alternativeHydrology days 2013
dc.title.alternativeAGU hydrology days 2013
dc.typeText

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