A new sugarbeets alert was posted to PNWPestAlert.net.
Powdery mildew has been positively identified by Amalgamated Sugar Company Representatives in sugar beet fields in the western Treasure Valley. There have also been reports of loopers in many Treasure Valley sugarbeet fields. As you scout your fields for powdery mildew, you may also want to be on the lookout for loopers and black bean aphids. There are several fungicides available for use to treat powdery mildew, including sulfur dusts. Click on the link below for recommendations from the 2011 PNW Plant Disease handbook. Depending on the disease pressure, applications with different chemistries should be repeated every 10 to 14 days. Contact your field representative from the Amalgamated Sugar Company if you have questions about treatment options.
To view the full alert, and to download any attached files, please go to www.pnwpestalert.net
The Treasure Valley and Pacific Northwest Pest Alert Network