Alternatives for phosphorus

[Floyd1829]

I'm from India and it's quite difficult to find organic fertilizers here with n-p-k ratio where phosphorus is more than the other two, so, is it safe to use MAP (mono ammonium phosphate) or DAP (di ammonium phosphate)?

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[Richard Richardson]

Hi Floyd, they are both safe to use, but DAP contains much more N than P, whereas MAP has a 1:1 ratio.

Monocalcium phosphate is a better source of Phosphorus and can be added to any fertilizer to boost the P ratio.

Or, Bat Guano - https://www.ijsrp.org/research-paper-0313/ijsrp-p15106.pdf