Students often do this experiment, for some reason. My only suggestion is that he calculate the amount of N in the caffeine he is applying, and if it is significant, include a comparable amount in another form (ammonium or nitrate nitrogen) as one of his controls.
Jon Greenberg
--- On Thu, 1/1/09, Tami Stalnaker <Tami.Stalnaker from mail.wvu.edu> wrote:
> From: Tami Stalnaker <Tami.Stalnaker from mail.wvu.edu>
> Subject: [Plant-education] Caffeine's effect on plants&In-Reply-To=
> To: plant-ed from magpie.bio.indiana.edu> Date: Thursday, January 1, 2009, 2:24 PM
> My son is doing an experiment in High School on the effects
> of caffeine on plant growth. We are trying to find
> University research on this as a comparison to his own
> research (required by the teacher). If you can send the
> link to this research or the documents it would be greatly
> appreciated.
>> --Tami
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