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Ohio State University Extension

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Statewide Slug Monitoring Project – Update # 3

This is our second year of our multi-state project to monitor slugs funded by the United Soybean Board. The goal of this research is to have a better understanding of slugs in soybean in states across our region. This year, we have 23 counties participating in shingle monitoring for slugs.

Figure 1. Slug feeding on soybean cotyledon in the field. 

Our third report covers monitoring from May 26th to June 1st. During this time, we had 14 counties monitoring a total of 113 shingle traps. Because of the rain and cold temperatures, many fields have not been planted, and our slug numbers are low compared to last year. Our highest slug average over the past week was 9, which was an outlier from the statewide average of 1.1 slugs per trap. We will continue to update slug numbers as the season continues, so stay tuned for slug updates over the next few weeks!

Slugs in Ohio

Week 3

May 26th – June 1st, 2025

Figure 2. Average slugs captured from May 26th to June 1st. The bold number on the left indicates the average slug count for the week, followed by the standard number on the right which indicates the total traps set up in that county.

 

Crop Observation and Recommendation Network

C.O.R.N. Newsletter is a summary of crop observations, related information, and appropriate recommendations for Ohio crop producers and industry. C.O.R.N. Newsletter is produced by the Ohio State University Extension Agronomy Team, state specialists at The Ohio State University and the Ohio Agricultural Research and Development Center (OARDC). C.O.R.N. Newsletter questions are directed to Extension and OARDC state specialists and associates at Ohio State.