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vol. 11, nr. 2 (2008)
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Modelling of content of fusarium infested material in ground wheat based on optical spectra recorded in different wavelength ranges
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Grażyna Balcerowska1, Ryszard Siuda1, Czesław Sadowski2
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1 Institute of Mathematics and Physics, University of Technology and Life Sciences, ul. Kaliskiego 7, 85-796 Bydgoszcz |
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2 Faculty of Phytopathology, University of Technology and Life Sciences, ul. Kordeckiego 20, 85-255 Bydgoszcz |
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vol. 11 (2008), nr. 2,
pp. 323-334
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abstract:
The paper presents application of diffuse reflectance spectroscopy for detection of fusariosis in ground grain of several winter wheat cultivars. Spectral measurements were made for series of samples of different particle sizes (three fractions: particle size <0.18 mm, >0.18 mm and <0.25 mm or 0.355 mm, >0.25 mm or 0.355 mm) in a wide spectral range from 200 nm to 2500 nm. Calibration models were built using the PLS method for three sub-ranges: UV (200-400 nm), VIS (400-800nm) and NIR (800-2500 nm). The study demonstrates that ultra-violet reflectance spectros-copy in several cases has greater potential for prediction of infested material content than the most common NIRS. A special gain is observed for the finest fraction, where the efficiency of the models is very good (RER>35).
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keywords:
fusariosis (FHB – Fusarium head blight), diffuse reflectance spectroscopy, multivariate calibration, Near Infrared Spectroscopy (NIRS)
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original in:
Polish
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