Mycotrol-O is a biopesticide with the entomopathogenic fungus Beauveria bassiana as the active ingredient. Beauveria bassiana is pathogenic to a wide range of arthropod pests and I have used both Mycotrol-O and the conventional formulations BotaniGard 22WP and BotaniGard ES in several studies against multiple pests over years. It showed good potential against thrips in lettuce, aphids in broccoli, lygus bug and spider mites on strawberries. The combination of Mycotrol-O and azadirachtin emerged as a good tool for managing root aphids in organic celery and Mycotrol-O consistently performed better than other options against Bagrada bugs in my laboratory assays.
On 24 August, a grower who has been using Mycotrol-O for controlling Bagrada bug on multiple crops sent me an email he received from the distributor that the OMRI certification of Mycotrol-O will expire as of 28 August, 2015. When I contacted Bioworks, Inc. that markets Mycotrol-O, they confirmed that one of the ingredients of the carrier was challenged by OMRI for organic production and their new formulation, Mycotrol ESO is waiting for registration. LAM International Corp, the manufacturer of Mycotrol-O, notified on 31 August that OMRI accepted their appeal to review the status of the product. This means, Mycotrol-O will remain in OMRI approved status until further notification.
Metarhizium brunneum (=M. anisopliae) and Isaria fumosorosea (=Paecilomyces fumosoroseus) are the other two entomopathogenic fungi that are commercially available, but only the latter is registered for organic use. Beauveria bassiana is an effective pathogen and several growers are using against multiple pests.
Growers and PCAs can continue to use Mycotrol-O based on the current information.
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