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Re: Duckweek and nitrogen fixation

>From: TYELLA at aol_com
>Subject: Duckweek and nitrogen fixation

>      I may be misremebering, but doesn't duckweed fix atmospheric nitrogen?

No. Plants do not fix atmospheric nitrogen. They rely on bacteria to do
that job. Nitrogen that is consumable to plants are in the forms of
ammonia, nitrite and nitrate. Atmospheric nitrogen is too inert for plants,
that is why farmers need to add fertilizer containing nitrogen - ammonium