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Effect of Soil Fumigation on Volunteer Potato (Solanum tuberosum) Tuber Viability

Published online by Cambridge University Press:  20 January 2017

Rick A. Boydston*
Affiliation:
USDA–ARS, Irrigated Agriculture Research and Extension Center, Prosser, WA 99350-9687
Martin M. Williams II
Affiliation:
Irrigated Agriculture Research and Extension Center, Washington State University, Prosser, WA 99350-9687
*
Corresponding author's E-mail: boydston@pars.ars.usda.gov

Abstract

Management of volunteer potato is difficult and requires an integrated approach. Soil fumigation is one tactic known to reduce population densities of certain weeds and may be a method to improve the management of volunteer potato. The effect of 1,3-dichloropropene (1,3-D) and metham sodium on potato tuber viability was tested in sealed glass jars at various doses, incubation temperatures, and times of exposure. Tuber viability data were fitted to a logistic model, and I90 doses (90% suppression) were calculated for each combination of temperature and time of exposure. I90 doses for 1,3-D ranged from 41 to 151 kg/ha and from 96 to over 480 kg/ha metham sodium. Both nondormant and dormant tubers were injured by exposure to metham sodium. Soil fumigation with 1,3-D and metham sodium has the potential to greatly reduce the number of viable potato tubers.

Type
Research
Copyright
Copyright © Weed Science Society of America 

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