Effects of in-furrow and water-run oxamyl on Paratrichodorus allius and corky ringspot disease of potato in the klamath basin

Corky ringspot disease (CRS) of potato (Solanum tuberosum) is caused by the tobacco rattle virus (TRV), which is vectored by stubby-root nematodes, Paratrichodorus spp. and Trichodorus spp., and is a significant threat to potato quality and production in many areas of the western United States. Betw...

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Veröffentlicht in:Journal of nematology. - 1969. - 42(2010), 1 vom: 01. März, Seite 1-7
1. Verfasser: Charlton, B A (VerfasserIn)
Weitere Verfasser: Ingham, R E, David, N L, Wade, N M, McKinley, N
Format: Aufsatz
Sprache:English
Veröffentlicht: 2010
Zugriff auf das übergeordnete Werk:Journal of nematology
Schlagworte:Journal Article
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245 1 0 |a Effects of in-furrow and water-run oxamyl on Paratrichodorus allius and corky ringspot disease of potato in the klamath basin 
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520 |a Corky ringspot disease (CRS) of potato (Solanum tuberosum) is caused by the tobacco rattle virus (TRV), which is vectored by stubby-root nematodes, Paratrichodorus spp. and Trichodorus spp., and is a significant threat to potato quality and production in many areas of the western United States. Between 2002 and 2005, fields with a history of CRS were planted to potato and treated with various combinations of in-furrow (IF) and chemigated (water run, WR) oxamyl [Methyl N'N'-dimethyl-N-[(methyl carbamoyl)oxy]-1-thiooxamimidate] applications. Soil samples were collected to determine how Paratrichodorus allius populations responded to the various treatment regimes (2002-2004); potato tubers were evaluated for symptoms of CRS in 2004-2005. Applications of oxamyl to potato (1.1 kg a.i./ha) did not cause significant mortality of P. allius but did prevent the populations from increasing. Oxamyl applications that began at 55 days after planting (DAP) or later did not control CRS and were not different from the untreated control. However, application schedules that began early-season, either IF at planting, early WR (33 - 41 DAP), or both, significantly reduced CRS expression in cv. Yukon Gold. Therefore, oxamyl applications must be made early in the growing season to be effective in controlling CRS. Effects of oxamyl on CRS may be due to nematostatic action that suppresses feeding activity during early field season when most virus transmission probably occurs 
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700 1 |a David, N L  |e verfasserin  |4 aut 
700 1 |a Wade, N M  |e verfasserin  |4 aut 
700 1 |a McKinley, N  |e verfasserin  |4 aut 
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