The library has one coffee-specific recommendation, and it covers minerals only.
Rain washed the trace minerals, including the coffee's boron and zinc, into the ocean. Drake's fix is to dilute seawater 1:20 to 1:30, add calcium, and spray it on the leaves (Office Hours Ep. 77, 21:11).
Drake also says you can charge biochar with nitrogen or other nutrients targeted to the crop you're growing (Office Hours Nov 2025, 29:31). Nothing in KNF is absolutely required, so use what you have (Office Hours Ep. 35, 28:47).
For a full plantation plan, bring your soil, elevation and problems to Office Hours.
