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Use of Landsat images for yield evaluation within a small plot
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SYSNO ASEP 0434120 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Use of Landsat images for yield evaluation within a small plot Author(s) Kumhálová, J. (CZ)
Zemek, František (UEK-B) RID, SAI, ORCID
Novák, P. (CZ)
Brovkina, O. (CZ)
Mayerová, M. (CZ)Source Title Plant, Soil and Environment. - : Česká akademie zemědělských věd - ISSN 1214-1178
Roč. 60, č. 11 (2014), S01-S06Number of pages 6 s. Language eng - English Country CZ - Czech Republic Keywords vegetation indices ; topography ; plant variability ; growth stage ; weather conditions Subject RIV EH - Ecology, Behaviour Institutional support RVO:67179843 - RVO:67179843 UT WOS 000346401700004 Annotation Many factors can influence crop yield. One of the most important factors is topography, which can play a crucial role especially in dry years. Plant variability can be monitored by many methods. This paper evaluates the suitability of vegetation indices derived from satellite Landsat 5 TM data in comparison with yield, curvature and topography wetness index over a relatively small field (11.5 ha). Imageries were chosen from the years 2006 and 2010, when oat was grown and from 2005 and 2011, when winter wheat was grown. These images were taken in June in the same growth stage for every crop. It was confirmed that derived indices from Landsat images can be used for comparison with yield and selected topographic attributes and it can explain yield variability, which can be influenced by water distribution during growth stages. Correlation coefficient between moisture stress index and winter wheat yield was –0.816 in the image acquisition date of 4. 6. 2011. Workplace Global Change Research Institute Contact Nikola Šviková, svikova.n@czechglobe.cz, Tel.: 511 192 268 Year of Publishing 2015
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