Lep Monitoring Network Update #18 – Fall Armyworm Monitoring Starting Across Ohio

Introduction

The Ohio Lep Network is in our 18^th week of monitoring for agronomic pests across Ohio. This week we will provide an update on fall armyworm (FAW), corn earworm (CEW), and both variations of European corn borer (ECB - IA & NY). This will be our last week reporting on ECB and CEW as numbers are low across the state.

For more information on these pests and many more, check out our website: https://aginsects.osu.edu

Fall Armyworm

We are in our second week of monitoring for the fall armyworm (FAW) in Ohio. Overall twenty counties monitored 61 traps across the state. The statewide average this week was 2.8 (the same as last week). Hardin County and Lucas County remain the only two counties with high FAW numbers, averages of 33.7 and 8, respectively. We will continue monitoring FAW number through September.  

To learn more about the fall armyworm moth, click here: https://aginsects.osu.edu/news/fall-armyworm-monitoring-begin

Fall Armyworm Moth Map

August 28^th – September 3^rd, 2023

Figure 1. Average fall armyworm (FAW) moths captured from August 28th – September 3rd. The bold number on the left indicates the average number of moths captured. The second number on the right indicates the number of traps monitored in each county.

Corn Earworm

This is our 13^th and final week reporting on corn earworm (CEW) populations across Ohio. This week, 10 counties were monitored for CEW, using 18 total traps. Lucas County had the highest average with 5 CEW moths (Figure 2).

Corn Earworm Moth Map
August 28^th – September 3^rd, 2023

Figure 2. Average corn earworm moths (CEW) captured from August 28th – September 3rd. The bold number on the left indicates the average number of moths captured. The second number on the right indicates the number of traps monitored in each county. Scouting should occur when your county has an average of 7 or more moths.

European Corn Borer

This is our 15^th and final week reporting on European corn borer (ECB – IA & NY) populations across Ohio. This week, 8 counties monitored 21 ECB traps across the state. Overall, there were no reports of  ECB-IA or NY moths (Figure 3).

European Corn Borer (IA & NY) Moth Map

August 28^th – September 3^rd, 2023

Figure 3. Average European corn borer (ECB – IA & NY) moths captured from August 28th – September 3rd. The bold number on the left indicates the average number of moths captured. The second number on the right indicates the number of traps monitored in each county.