Statistical differences among varieties in the wheat [Triticum aestivum] calibrations using near-infrared reflectance spectroscopy
1992
Natsuga, M. (Hokkaido Univ., Sapporo (Japan). Faculty of Agriculture) | Kawamura, S. | Itoh, K. | Itoh, K.
Near-Infrared Reflectance Spectroscopy has its advantages in accuracy and precision compared with the usual chemical analytical methods. It will be widely adopted in the future, but we do not have an accumulation of fundamental information about domestic agricultural products. We carried out investigations regarding accuracy and precision of Near-Infrared Reflectance Analyzer in determining moisture and protein content of Hokkaido-grown wheat. The results were as follows: 1) the SEC of moisture calibrations were less than 0.18, and they were adequate to convert the protein content into its standard moisture base value. 2) The r x r and SEC of protein calibrations were greater than 0.92 and less than 0.18 respectively, and they were adequate. 3) There were significant differences among calibrations obtained for each wheat variety. Therefore, it was difficult to apply the calibration for a certain variety among other varieties. 4) The calibrations obtained for all wheat samples were applicable to all varieties to a good degree. 5) It was advantageous to use the calibrations obtained for each wheat variety in experiments and researches where a higher accuracy was required, but it was somewhat better to use the calibrations obtained for all samples in the farming stage where simplicity was required
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