Trap Catches Identified to Aug 04

Greetings!

Sorry last week's report is late, we've had some technical difficulties!  This is officially a high aphid year!  With the increasing numbers of vectors, we strongly recommend scouting and the use of crop oils.  Anti-feeding insecticides should be applied if required (see below).

We continue to see high aphid numbers as well as an increasing PVY risk index. Sites that had high vector numbers include: Ada (282), Brooks (164), Crookston (99), Gully (116), Hoople (199), Humboldt (108), Lake of the Woods (86), McVille (145), Sabin (176), Staples (149) and Verndale (159). Meaning that in 11 of 16 traps reporting this week, we had high numbers.

Green peach aphid was found in 5 locations as well, including: Gully (1), Humboldt (3), Lake of the Woods (2), Sabin (2) and Verndale (1).  Small grains are maturing so we're also seeing an increase in small grain aphids (Ada had 219 Corn Leaf Aphids in their trap this week).  Soybean aphid numbers remain up, with the current outbreak of soybean aphid in MN & ND, we can expect large numbers of these insects to be moving into seed potato fields.

Remember, keep scouting!

Click on any figure to see full size version.

Total 2016 PVY Risk Index for Comparison

Weekly Trap Capture by Location

Cumulative PVY Risk To date by Location