Quote:
Originally Posted by pikkenix
If growing my nanas in pots, should I complement my banana fuel with some Mg and Ca?
I keep reading articles that bananas consume a lot of Ca and also some Mg...
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According to the label that Richard posted, you should "complement" with both Ca and S because 0.30% Ca and 0.16% S are grossly insufficient.
According to
http://www.aensiweb.com/old/jasr/jasr/2006/470-476.pdf, S content should be 20% that of N, which for banana fuel would translate to 0.2*16 = 3.2%.
According to
http://m.haifa-group.com/files/Guides/Banana.pdf, Ca content should be about 33% that of N which would translate to 0.33*16 = 5.3%.
For sulfur, you can add magnesium sulfate but you should not add calcium salts because it will form a precipitate of relatively insoluble calcium sulfate and calcium phosphate. Better to alternate fertilization with a calcium nitrate solution because then, at least, the precipitate will form within the soil near the plant roots.