SEPT. 21 UI PSYLLID/ZEBRA CHIP UPDATE

Published online: Sep 27, 2012 Potato Harvesting, Insecticide, Fungicide
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A new potato alert was posted to PNWPestAlert.net.

"Potato psyllids continue to be trapped on yellow sticky cards across several sites being monitored by the University of Idaho in the Magic Valley. Of the remaining sites that have not undergone vine kill, numbers of adults were similar to or higher than during the previous three weeks. Nymphs and/or eggs were found at three sites in the Magic Valley; 44, 58 and 7 eggs per 100 leaf samples were found at sites 3, 4, and 5, respectively, and 40, 23, and 0 nymphs per 100 leaf samples were found at sites 3, 4, and 5, respectively. All but one site has now undergone vine kill. Only site 2 (in Jerome County) will be monitored next week. Reports of liberibacter incidence in samples will continue to be reported as the numbers come in. See the link below to view a table that details where (by county) and when potato psyllids and liberibacter have been found so far during this season in Idaho.

"Tubers from the Kimberly R&E Center (site 7, below) were harvested today and will be evaluated for development of ZC symptoms over the storage season.
Refer to the sites below for guidance on scouting and IPM programs for potato psyllids and to view trap captures in Idaho so far over the season."

To view the full alert, and to download any attached files, please go to
www.pnwpestalert.net

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