I have a variety of young to recently producing fruit trees, tangerines [3 types], lemons [2 types], an orange, a lime, avos [3 types], a longan, lychee, rambutan, and a jaboticaba as well as a couple of small plots of tall and dwarf Brazilian bananas [Hawaiian Apple bananas].
Yeah, I know, I've gone stark, staring, raving mad with putting fruit trees in on our acreage.

I have to treat the citrus with dolomite to keep their leaves from going chlorotic.
My Tall Brazilian bananas are showing pronounced signs of calcium/boron deficiency.
I'm applying dolomite to them as well as all the other fruit trees.

I live in a high rainfall area getting about 150"/yr.
The soil is thin, overlaying lava flows which are porous and allow the water to drain right through.
It seems obvious to me that the nutrients are leached fairly rapidly out of the soil.
I have acquired fertilizers and am beginning to use them.

So, the question that brought me here:

I am about to drench my bananas with a 1ml/l equivalent boron solution.
Should I, or should I not apply the drench to all the other trees?