Browsing by Subject "Comfrey"

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    Comfrey- A Controversial Crop
    (Minnesota Agricultural Experiment Station, 1983) Robinson, Robert G.
    Comfrey is an uncommon crop that had great potential for food production in city dooryards and as a forage crop. However, discovery of a potential toxicity problem terminated, at least temporarily, its further development as a food crop. This publication summarizes current information on comfrey and reports research data not available elsewhere.
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    Minnesota Shade Tree Advocate newsletter, volume 3, issue 4, fall 2000
    (2000) Minnesota Shade Tree Advisory Committee