Trap Catches to June 25, 2021.

The season is off to a slow start.  This is a bit surprising given the warm, dry conditions would be expected to suppress some of the mortality factors that generally limit aphid populations.  We have recovered high numbers of non-vector aphid species in the past couple of weeks, but very few PVY vectors are flying.

Most sites have started their trapping and we are getting catch data from an increasing number of sites.  We should have most sites up and running by next week.   

I anticipate we might start to see cereal aphids dispersing from small grains earlier this year then normal.  The grain seems already to be drying and progressing quite rapidly.

We'll keep reporting numbers.  As always, keep on scouting!

Click on any image below for full-scale version.

Cumulative PVY Vector Risk Index to June 25, 2021

Aphid Species Captured and PVY Risk Index for the week ending June 25, 2021