The combination of UAV survey and Landsat imagery for monitoring of crop vigor in precision agriculture

0468678 - ÚVGZ 2017 RIV DE eng C - Konferenční příspěvek (zahraniční konf.)
Lukas, V. - Novák, J. - Neudert, L. - Svobodová, I. - Rodriguez-Moreno, Fernando - Edress, M. - Křen, J.
The combination of UAV survey and Landsat imagery for monitoring of crop vigor in precision agriculture.
XXIII ISPRS Congress: Technical Commission VII. Vol. 2016. Göttingen: Copernicus Gesselschaft, 2016, s. 953-957. International Archives of the Photogrammetry Remote Sensing and Spatial Information Sciences, 41 (B1). ISSN 1682-1750.
[International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences Congress, ISPRS 2016 /23./. Prague (CZ), 12.07.2016-19.07.2016]
Grant CEP: GA MZe(CZ) QJ1610289
Institucionální podpora: RVO:67179843
Klíčová slova: Satellite remote sensing * Site specific crop management * Unmanned aerial vehicle * Vegetation indices * Winter wheat
Kód oboru RIV: EH - Ekologie - společenstva
http://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XLI-B8/953/2016/isprs-archives-XLI-B8-953-2016.pdf

Mapping of the with-in field variability of crop vigor has a long tradition with a success rate ranging from medium to high depending on the local conditions of the study. Information about the development of agronomical relevant crop parameters, such as above-ground biomass and crop nutritional status, provides high reliability for yield estimation and recommendation for variable rate application of fertilizers. The aim of this study was to utilize unmanned and satellite multispectral imaging for estimation of basic crop parameters during the growing season. The experimental part of work was carried out in 2014 at the winter wheat field with an area of 69 ha located in the South Moravia region of the Czech Republic. An UAV imaging was done in April 2014 using Sensefly eBee, which was equipped by visible and near infrared (red edge) multispectral cameras. For ground truth calibration the spectral signatures were measured on 20 sites using portable spectroradiometer ASD Handheld 2 and simultaneously plant samples were taken at BBCH 32 (April 2014) and BBCH 59 (Mai 2014) for estimation of above-ground biomass and nitrogen content. The UAV survey was later extended by selected cloud-free Landsat 8 OLI satellite imagery, downloaded from USGS web application Earth Explorer. After standard pre-processing procedures, a set of vegetation indices was calculated from remotely and ground sensed data. As the next step, a correlation analysis was computed among crop vigor parameters and vegetation indices. Both, amount of above-ground biomass and nitrogen content were highly correlated (r > 0.85) with ground spectrometric measurement by ASD Handheld 2 in BBCH 32, especially for narrow band vegetation indices (e.g. Red Edge Inflection Point).
Trvalý link: http://hdl.handle.net/11104/0266506