Sometimes mistakenly called army worms, Forest Tent Caterpillar have become a nusiance to land owners throughout Minnesota.
Forest Tent Caterpillar
West Central Ag-Air can apply a microbial pesticide for control of these pests.
The pesticide contains the spores and endotoxin of a soil born bacteria called Bacillus Thuringiensis. (Commonly abbreviated as Bt.) Bt only has effect on caterpillar species and has been in use for decades for caterpillar control throughout the United States and Canada. The commercial name of the product that we use is called Foray 48B.
Spray Status Click Here: FTCcustomer status 6.1.20
File last updated:6/11/19
Remember
One spray area representative must call or email me as soon as the caterpillars are 1/2 inch long.
Actual spray date/time will depend on pest stage and weather.
We do not spray caterpillars on the weekends or holidays.
Weather effects on Foray applications. (pdf)
NPDES permit information
Compliance with the Minnesota Pollution Control Agency’s National Pollutant Discharge Elimination System is now required. You can view the permit here:
Appilcations less than 6400 acres will be covered under the general permit. The customer is considered the “decision-maker” and must comply with the terms of the general permit. The following is an easy to follow checklist for compliance. Customers must print and follow the checklist in order to ensure permit compliance.