Trap Catches to July 16, 2021.
Aphid vector catch numbers took another jump this week. Driven by greater numbers of Soybean aphid and large numbers of English Grain aphids being recovered from multiple reporting sites, the PVY Vector Risk increased again this week. There are still no Green Peach aphids being captured at any site, in additional to increased numbers of Soybean and English Grain aphids, numbers of Buckthorn aphids were up this week as were several other vectors. The first captures of Cannabis aphids occurred this past week and Potato aphids seem to be increasing slightly. All in all, numbers are up driving the Vector Risk Index to a higher level than this time last year.
Continued scouting and use of crop oils is recommended. Although with the drought conditions and temperatures in several seed growing locations, care should be taken with oils to monitor for phytotoxicity.
We will keep counting. As always, keep on scouting!