Re: 3x3 method ???
I gave up on the pipe in the ground idea. Instead I built a fork with holes on the bottom outside edges ( like a upside down V)
With a riser, all made with 1 1/2" pipe. This fork will be placed directly under the corm. Water & feed can be sent directly to the root system.
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Keep shoveling on the potash till the ground bleeds 
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