Can mycorrhizal fungus inoculum be applied to established plants like trees, plants and vines with beneficial effects?
Mycorrhizal fungi must be brought in contact with infectable roots, so it is not likely that established plants can be inoculated. Furthermore, established plants probably have already acquired mycorrhizal fungi, and trying to add inoculum would not be effective. If plants are struggling to survive in the absence of mycorrhizae, then injection of inoculum or drenching liquid suspensions of inoculum into the root system may be helpful.
