claudey.. your talking use of fertilizer on bananas?
richard and others here have more knowledge on fertilizer than me..
i know nanners like a 1:2 ratio on the nitrogen
otash.. and low levels
of phosphates..
i think alot of nanner growers experiment..and find what works for them..in their specific areas..and soils..
for me.. i use banana fuel (15:5:30) and i alternate that with use of
kelp/fulvic/humic , rabbit manure tea, fish emulsion fertilizer..with addition
of soluable potash..
seems to work for my plants..in my conditions..
good luck to ya...