Insecticide recommendations for controlling in-season infestations have been updated for corn, soybean and alfalfa. The tables, sorted by pests, include abbreviated treatment guidelines. Insecticides are sorted by common name, with trade and generic names listed. Beyond considering product performance, our blanket recommendation is for pest managers to follow pre-harvest intervals (i.e., time from treatment to harvest) and to consider using products with different modes of action (MOA) whenever possible and practical.
The updated fact sheets can be viewed online and downloaded for printing (PDF):
Corn Insect Control Recommendations
https://extension.entm.purdue.edu/publications/E-219/E-219.html
https://extension.entm.purdue.edu/publications/E-219/E-219.pdf
Soybean Insect Control Recommendations
https://extension.entm.purdue.edu/publications/E-77/E-77.html
https://extension.entm.purdue.edu/publications/E-77/E-77.pdf
Alfalfa Insect Control Recommendations
https://extension.entm.purdue.edu/publications/E-220/E-220.html
https://extension.entm.purdue.edu/publications/E-220/E-220.pdf