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ARS Home » Midwest Area » Madison, Wisconsin » Vegetable Crops Research » Research » Publications at this Location » Publication #365058
Research Project: Maximizing the Impact of Potato Genebank Resources: Development and Evaluation of a Wild Species Genotype Diversity Panel

Location: Vegetable Crops Research

Title: Sugar end disorder and stem-end chip defect: Stress factors and management practices

Author
item THORNTON, MIKE - University Of Idaho
item Bethke, Paul

Submitted to: Internet Web Page
Publication Type: Other
Publication Acceptance Date: 7/8/2019
Publication Date: 7/8/2019
Citation: Thornton, M., Bethke, P.C. 2019. Sugar end disorder and stem-end chip defect: Stress factors and management practices. Internet Web Page. https://spudsmart.com/sugar-end-disorder-and-stem-end-chip-defect-stress-factors-and-management-a-spud-smart-webinar-podcast/

Interpretive Summary:

Technical Abstract: Sugar ends is a physiological disorder that can occur at a potato tuber’s bud or stem end. The disorder’s symptoms usually aren’t apparent until the tuber’s exposure to colder temperatures — around 10 °C or below. The stress that causes the disorder’s development occurs early in the growing season and may be difficult to determine. Stem-end chip defect is another serious threat affecting tuber quality for chip potato growers. Like sugar ends, the extent and severity of stem-end chips defects may not be apparent until weeks after the potatoes are put into storage. In this webinar, we review the causes of sugar end/jelly end rot and stem-end chip defect and the management strategies can be taken to reduce the incidence of these disorders.