The date of the “VA Peanut Tour” at 1045 Hare Road, Suffolk, VA, is July 30, 2019.
Very low numbers of corn earworm moths were reported by our network of black light trap operators this week. Nightly averages ranged from 0.3 to 1.0 moths. Here are this week’s numbers (trap operators listed in parentheses):
Greensville (Sara Rutherford): 0.7 per night
Hanover (Laura Maxey-Nay): 0.9 per night
Prince George-Templeton (Scott Reiter): 0.8 per night
Prince George-Disputanta (Scott Reiter): 0.5 per night
Richmond County-Warsaw (Mary Beahm): 0.3 per night
Southampton (Josh Holland): 0.3 per night
Suffolk (Sally Taylor and crew): 1.0 per night
Here is a pdf of the data table: BLT_18_Jul_2019
We will be conducting vial tests to monitor insecticide resistance in corn earworm/bollworm again this year, but so far we have only captured and tested a handful of moths.
Please see the attached table for current black light trap captures of corn earworm moths: BLT_6_Sep_2018
Average nightly captures of corn earworm moths in local black light traps this week were: Hanover=1.0; Southampton=0.7; Suffolk=28.1; Warsaw=3.6; Waverly=3.7. Here is the table: BLT_30_Aug_18
Average nightly corn earworm moth captures for local black light traps this week were as follows: Chesapeake=8.0; Dinwiddie=42.6; Hanover=3.4; Isle of Wight=0.9; Prince George (Templeton)=1.3; Prince George (Disputanta)=3.3; Warsaw=6.6; Southampton=0.9; Suffolk=33.0; and Sussex=1.9
Here is the link to the data table: BLT_23_Aug_2018
Thanks to Watson Lawrence, Mike Parrish, Laura Maxey Nay, Livvy Preisser, Scott Reiter, Mary Beahm, Neil Clark, and Dwayne Sanders for their reports!
Corn earworm moth catches in area black light traps averaged 2 to 45 per night. Please see the attached table for more details. blt_16_Aug_2018
Corn earworm moth captures in area black light traps are still increasing. Please see the attached table here: BLT_9_Aug_2018
Survival of corn earworm (bollworm) moths in the cypermethrin vial tests increased slightly this week, making the seasonal average = 21.4%, with 360 moths tested to date.
Corn earworm moth captures in black light traps continued to climb this week–please see the attached table (pdf document) for more details: BLT_2_Aug_2018
We have tested 246 corn earworm moths in our vial tests this season, with an average of 15% surviving a 24-hour exposure to the pyrethroid insecticide cypermethrin at 5 micrograms per vial. The line graph is available here: vial_tests_2_Aug_2018
At our research farm in Suffolk this week, we have been finding bollworm eggs in cotton terminals with some small larvae on squares and bolls. Please be sure to scout your fields!
Statewide, approximately 18% of ears were infested with corn earworm larvae. Corn is considered a nursery crop for corn earworm, allowing the pest to complete a lifecycle and then move on to other crops such as soybean, cotton, and peanut in August. There is a linear correlation between the infestation level in corn and the amount of soybean acreage that gets treated with insecticide for this pest. Please see the attached pdf for more details: CEW_survey_results_2018
Black light trap captures of corn earworm moths in Suffolk really jumped this week, averaging 30 per night (some nights when it wasn’t raining went up to 78). Other locations (Chesapeake, Isle of Wight, Prince George/Templeton, Prince George/Disputanta, Warsaw, and Southampton) averaged only about 1 moth per night this week.