MOST of the submersed aquatic macrophytes(SAM) have a ratio of 10:1 N:P.
We dose NO3/NH4 and PO4.
16:1 comes from algae, the redfield ratio , we are not growing marine phytoplankton last time I checked here which is what Refield was looking at.
Issue number #2.
Plants might have this ratio for many reason's out in nature, they might have far more or less depending on if they are limited and in terms of luxury uptake, perhaps even 100X more/less.
I still feel ratios are fine but have a very wide range in most cases.
Regards,
Tom Barr |