I wonder if the reason the leaves don’t have higher lipids is because the Johnson su is so biologically active that it is demanding more exudates from the plant then true soil would and therefore the plant hasn’t started storing energy as lipids or perhaps it doesn’t need to as it has such I big community of microbes around it that it knows it can get through fruit fill by feeding on them?

I don’t understand about the silica are you saying biochar would increase it? Rice hulls or basalt rock dust would be the best option possibly?

I have a feeling that the sap test will show very high potassium but also high magnesium and calcium together.

That is very interesting about the methanol, I wonder if methanol could be added to the culture to help the dependant organisms reproduce? Very small amounts of course.