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Title: Winter oilseed-rape yield estimates from hyperspectral radiometer measurements
Authors: Piekarczyk, Jan
Sulewska, Hanna
Szymańska, Grażyna
Keywords: Remote Sensing
ground hyperspectral measurements
winter oilseed rape
Issue Date: 2011
Publisher: Wydział Nauk Geograficznych i Geologicznych Uniwersytetu im. Adama Mickiewicza
Citation: Quaestiones Geographicae vol. 30 (1), 2011. pp. 77-84
Abstract: Spectral reflectance data can be used for estimation of plant biophysical parameters such as seed yield, related to the use of solar energy. A field experiment was conducted to investigate relationships between canopy reflectance and seed yield of winter oilseed rape sown on four different dates. Ground hyperspectral reflectance measurements were made using a hand-held radiometer and multispectral images were taken with a VIS-NIR camera. The different sowing dates generated a wide range of difference in crop spectral response and seed yields. The strongest relationships (R2=0.87) between the yield and spectral data recorded by both sensors occurred at early flowering stages. Later, the presence of flowers caused a decline in the relationship between yield and spectral data especially in the visible (VIS) range. In the full flowering stage the strongest correlation (R2=0.72) with the yield showed vegetation indices of the near-infrared (NIR) bands.
ISBN: 978-83-62662-62-3
ISSN: 0137- 477X
Appears in Collections:Quaestiones Geographicae vol. 30 (1), 2011

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