External Disorders
Deformations
Cracking
Swollen Lenticels
Chaining
Hair Sprouting
Little Tuber Disorder
Summary Table: Causes of External Disorder
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Disorder
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Primary Cause
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Occurrence
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Market Effect
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Deformation
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heat*
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bulking
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quality
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Growth Crack
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wet/dry soil*
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bulking
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quality
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Chaining
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hot soil
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mid-bulking
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yield (size)
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Hair Sprout
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hot soil
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late-bulking
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quality and yield
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Swollen Lenticel
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wet soil
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bulking-harvest
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storage rots
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Greening
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light
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bulking-storage
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quality
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Thumnbnail Crack
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very dry soil
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harvest
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storage rots
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Air Crack
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sudden cold
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harvest
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storage rots
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Little Tuber
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seed aging
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storage
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yield (stand)
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“Hides”
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?
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?
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(quality)
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* Deformations may also be caused by some herbicides.
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