In Oregon, Berry has found an indigenous species of Heterorhabditis comfortable in the cool Pacific Northwest soils. Marelatus is being commercialized by a biotech company out of Washington called Sun Pacific Bio Labs. This is excellent news and gives cranberry growers a glimpse of what may be coming down the pike. More Punch Pathogens are the final category of natural enemies. They, like their counterparts that give us fevers, aches and pains, consist of bacteria and viruses.
Fungi are also an important pathogen of plant insect pests in cranberry.
Examples of pathogens commercially sold for cranberry pest control include B.t. Again, because of inconsistent results, B.t. People who have used it against blackheaded fireworm don't have a good sense of B.t.'s as an effective type of approach to pest management. But B.t. is quite effective against young spanworms. It could be an option there.