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Tropical Fruit Discussion / Re: The plant microbiome and plant health pyramid
« on: January 31, 2026, 01:25:05 PM »The main point I'm getting is every disease and pest problem is related to some kind of deficiency.
I've heard that from Dr. Dykstra, but not sure if I'm totally convinced. I emailed him once regarding leaf cutter ants and he still insisted they only will go after low brix plants, but I think that's bs, because the formicide baits are all based on citrus fruit pulp to make the bait "sweet". Homemade baits are often sugary treats as well. My argument was that the ants aren't directly feeding on the plant like plant pests do, but are using the plant material as a substrate to cultivate their own fungal gardens. So, on the contrary, the healthier the plant material, the more nutrient rich and healthy their fungus, right?
I think it has more to do with absence of certain plant secondary metabolites. However, some species of plants are genetically inferior when it comes to defensive/anti-fungal compounds. I have a list in my notebook of my observations of the different plant species here that are susceptible or not to the ants. Some species I've never seen touched, even very unhealthy (probably vey low brix) individuals of those species.
I’m not convinced either. I’m pretty sure the coconut rhinoceros beetle is a problem wherever it’s been introduced. It doesn’t seem to impact only the palms where soil might be lacking in nutrients etc it seems to attack any palm it wants.
In a somewhat related topic, anyone know anything about the mango stem borer and how to best control it ? I have seen it wipe out some mango trees in Kona.

not sure I would like it. Glad to see it’s non-gmo but I wonder what’s holding them back from releasing a truly white fleshed pine

