Technical Report
 

Magnetic separation of seeds

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  • Seed processors now use magnetic cleaning to remove noxious weed seeds and other contaminants from smooth crop seeds like those of alfalfa. In the present practice, the contaminant allowances permitted for certified seeds are frequently exceeded, or high crop losses are sustained in meeting the standard. The importance of iron powder fineness, moisture level, and technique was determined and used to specify materials and procedures that improve efficiency in magnetic separation of seeds.
  • Published May 1977. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
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