Potato
 Courtesy EcoPort (http://www.ecoport.org): Arnoldo Mondadori Editore SpA
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Potato Solanum tuberosum - Tubers roots and leaves.
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 Kenpei
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Potato (Solanum tuberosum)
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 Chad Behrendt. Reproduced from University of Minnesota Extension.
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Early blight on potato. On potato tubers, early blight results in surface lesions that appear a little darker than adjacent healthy skin. Lesions are usually slightly sunken, circular or irregular, and vary in size up to 1.9 cm in diameter. There is usually a well defined and sometimes slightly raised margin between healthy and diseased tissue. Internally, the tissue shows a brown to black corky, dry rot, usually not more than 6mm. Deep cracks may form in older lesions.
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 A.A.Seif, icipe
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Early blight on potato leaf. Note concentric rings on spots.
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 Courtesy EcoPort (http://www.ecoport.org): William E. Fry. Reproduced from the Crop Protection Compendium, 2004 Edition © CAB International, Wallingford.
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Late blight on potato tubers.
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 Courtesy of EcoPort, www.ecoport.org
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Bacterial wilt of potato - symptoms in the tuber
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 A.A. Seif, icipe
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Bacterial wilt symptoms on potato plants. The first visible symptom on foliage is a wilting of the leaves at the ends of the branches during the heat of the day with recovery at night. As the disease develops, a streaky brown discolouration of the stem may be observed on stems 2.5 cm or more above the soil line, and the leaves develop a bronze tint. No yellowing is observed with bacterial wilt ? it?s a sudden death.
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 Courtesy EcoPort (http://www.ecoport.org): SASA
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Potato X potexvirus
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 Courtesy EcoPort (http://www.ecoport.org): J. Horvath
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Potato Y potyvirus
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 Courtesy EcoPort (http://www.ecoport.org): Jürgen Kranz
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Damping-off of potato
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 J. Kroschel, CIP
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Secondary infection to potato tubers in storage due to damage by the potato tuber moth.
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 J. Kroschel, CIP
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Potato tubers damaged by the potato tuber moth.
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