Insect Pest Update For Sep. 8, 2016

Sep 09, 2016

By Sean Malone

White sugarcane aphid, Melanaphis sacchari, in sorghum: I did not receive any reports of this aphid being found in any new Virginia counties this week.

Brown marmorated stink bug in soybean: Our scouts reported 11 Virginia counties having threshold levels of BMSB, with highest numbers from Bedford and Orange (9 and 6 BMSB per 2-minute visual inspection, respectively). First reports for the season came from James City, King George, Culpeper, and Frederick. Please see the following map:

Kudzu bug in soybean: Our scouts have not found any Virginia counties with threshold levels of this pest in 2016. The current map:

Corn earworm/bollworm (Helicoverpa zea) resistance monitoring: The number of moths surviving the 24-hour exposure to 5 micrograms of cypermethrin in this week’s vial tests was 45.8% (n = 180 moths evaluated). The seasonal average is 43.4% survival, based on 1,255 moths tested.

Black light trap counts: Corn earworm moth captures dropped slightly from the previous weeks’ counts; brown marmorated stink bug counts were zero across all reporting stations.

Source: vt.edu

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