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> bionet/plants #2431, from bethshel at aol.com, 852 chars, 13 Oct 1996
14:53:10 -0
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> Article: 11002 of bionet.plants
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> From: bethshel at aol.com (Beth shel)
> Newsgroups: bionet.plants
> Subject: Nutrients added to flowers
> Date: 13 Oct 1996 14:53:10 -0400
> Organization: America Online, Inc. (1-800-827-6364)
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> Reply-To: bethshel at aol.com (Beth shel)
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>> Need help with science fair project dealing with elements added to
zinnia
> plants grown in the house. Am adding calcium, magnesium, nitrogen,
> potash, and phosphorous to plants to observe the effects.
Great idea BUT
What is there already ? Are you growing your plants in a compost or soil
in which case there may already be enough and one crop of Zinnias will
not deplete it.So you will not see much effect.
Try getting hold of a nutrient poor growth medium which will make the
effects more obvious. Terragreen or Leca are names to look for. Both are
mineral materials with little inherent nutrient status. Leca (Light
Expanded Clay Aggregate) is popular for use in office plantings and you
might need to contact a firm that does commercial plant supplies to
offices.
Peter Harris,
University of Reading,
UK.
