Winter Oilseed-Rape Yield Estimates from Hyperspectral Radiometer Measurements

Piekarczyk Jan, Sulewska Hanna and Szymańska Grażyna
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Piekarczyk Jan: Institute of Physical Geography and Environmental Planning, Adam Mickiewicz University, Poznań, Poland
Sulewska Hanna: Department of Soil and Plant Cultivation, University of Life Science, Poznań, Poland
Szymańska Grażyna: Department of Soil and Plant Cultivation, University of Life Science, Poznań, Poland

Quaestiones Geographicae, 2011, vol. 30, issue 1, 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.

Keywords: Remote Sensing; ground hyperspectral measurements; winter oilseed rape; yield; Remote Sensing; ground hyperspectral measurements; winter oilseed rape; yield (search for similar items in EconPapers)
Date: 2011
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Persistent link: https://EconPapers.repec.org/RePEc:vrs:quageo:v:30:y:2011:i:1:p:77-84:n:7

DOI: 10.2478/v10117-011-0007-z

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