Small Horticultural Farm: Pest and Disease Identification Key
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Small Horticultural Farm: Pest and Disease Identification Key
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ASPARAGUS
LIGHT GREEN OVAL LESIONS IN EARLY SUMMER FOLLOWED BY TAN OR BLACK PROTRUDING BLISTERS LATER IN SEASON--AT TIMES ACCOMPANIED BY ORANGE SPORES.
Cause:
Asparagus rust, a fungal pathogen.
Treatment: Remove volunteer asparagus near commercial fields. Plant resistant varieties such as Jersey Giant, Martha Washington, and Viking KB3. Orient rows in the direction of prevailing winds, and thin rows if neccessary to facilitate air movement. Many approved fungicides are being removed from the market. Contact your local Extension Agent, or the U of M Plant Disease Clinic at: 612-625-1275 for current recommendations.
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