Summary:
Introduction Soybean cake, or soybean meal is the residue that remains after oil is removed. It was used as a crop amendment and as a livestock feed supplement in the late 1800’s to the early 1900’s. ...
Read MoreIntroduction Copper is an essential micronutrient for all plant and animal life. Even snails and slugs that are particularly averse to copper tape and pots have large amounts of copper in their ...
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