Compendium of Potato Diseases - (PDF, 101 mb) - USAID

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7. Air pollution injury from suilfur oxide (Courtesy AS,'RCO 8. Nitrogen (left) and phosphorus (right) deficiencies.
Inc., Department of Environmental Sciences, Salt Lake City, UT) (Courtesy Department of Soils and Plant Nutrition, University of
California. Berkeley)
9. Potassium (left) and calcium (right) deficiencies. (Courtesy 10. Early sumptoms of magnesium deficiency (left) and
Department of Soils and Plant Nutrition. University of manganese deficiency (right) (Left, Courtesy Department of
California, Berkeley) Soils and Plant Nutrition, University of California, Berkeley;
right, courtesy International Minerals and Chemicals Corp.,
Libertyville, IL)
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11. Blackleg, Erwinia carotovora var. atrosepfica infection in 12. Bacterial soft rol. Erwinia carotovora lenticel infection of
the field. (Courtesy M D. Harrison) tubers.
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