Optical properties of damaged soybean seeds

William W. Casady, Marvin R Paulsen, James B. Sinclair

Research output: Contribution to journalArticlepeer-review


Optical properties of asymptomatic soybean seeds, green seeds, and four classes of soybean seeds discolored by fungi were determined using a spectroradiometer. Knowledge of the optical properties of soybean seeds provided a means of identifying that differences in spectral reflectance existed that could be used for discriminating among asymptomatic soybean seeds and seeds discolored by a pathogen. This knowledge also aided in identifying the feasibility of using color filters as a means for separation of soybean seed classes. Electromagnetic radiation between 436 and 724 nm provided the most information for linear separation of soybean seeds, which was useful for identifying differences in the colors of soybean seeds. However, no single wavelength or combination of wavelengths could be used to linearly separate all classes of damaged soybean seeds.

Original languageEnglish (US)
Pages (from-to)943-947
Number of pages5
JournalTransactions of the American Society of Agricultural Engineers
Issue number3
StatePublished - May 1993

ASJC Scopus subject areas

  • Agricultural and Biological Sciences (miscellaneous)


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