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Agronomic Crops Network

Ohio State University Extension


Download your Insect Pest Management Guide Today

Are you wondering what thresholds to use for a given insect pest, what products are labeled for it, what the pre-harvest intervals of those products are?  Check out the Michigan State University / Ohio State University Field Crops Insect Pest Management Guide written by Drs. Chris DiFonzo and Kelley Tilmon, which is available for download or print at

This guide contains information on the biology and management of field crop insect pests in Michigan and Ohio. Content is available for several agronomic crops: field corn, soybean, wheat, alfalfa, grass forage, dry beans and sugar beets. 

Any questions or product updates should be sent to or  Be sure to read product labels prior to any pesticide applications and be alert for changes.


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.