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Effect of Shoot Removal During Tuberization on Volunteer Potato (Solanum tuberosum) Tuber Production

Published online by Cambridge University Press:  20 January 2017

Martin M. Williams II*
Affiliation:
Irrigated Agriculture Research and Extension Center, Washington State University, Prosser, WA 99350-9687
Rick A. Boydston
Affiliation:
Agricultural Research Service, United States Department of Agriculture, Irrigated Agriculture Research and Extension Center, Prosser, WA 99350-9687
*
Corresponding author's E-mail: miwilliams@wsu.edu

Abstract

Volunteer potato can be a host of serious pest problems in potato and could provide a source of inoculum for subsequent potato crops. Volunteer potato can also be difficult to control in many rotational crops. Potato shoots were removed once, twice, and throughout the growing season, beginning at early and late tuberization. Compared with no shoot removal, two or more shoot removal treatments reduced the number of tubers 42% or more. A single shoot removal treatment at early tuberization reduced tuber biomass 37%, compared with 65% when shoot removal was initiated several weeks later. Regardless of timing, a single shoot removal increased the number and biomass of small tubers (≤ 57 g each). Control tactics that remove or kill volunteer potato shoots require repeated application or integration with other management practices to suppress the weed.

Type
Research
Copyright
Copyright © Weed Science Society of America 

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References

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