Spider Mite Update Peanut Notes No. 171 2020

— Written By

Update on Spider Mites

Rick Brandenburg

Entomology Extension Specialist

Earlier we posted regarding the potential impact of the recent storm on spider mite populations in peanuts. In following up, it does not appear that the storm eliminated the threat of spider mites. It came in fast and moved on through and did not give us the day and a half of cloudy, cooler weather that is necessary for a fungal pathogen to significantly reduce the population. The rains did knock them back quite a bit, but given the return to high temperatures the recovery will be quick.

We are in the midst of testing Portal in peanuts for spider mite control. Preliminary data indicate it works very well.