[sci.bio] Plant nutrients

richard@gryphon.COM (Richard Sexton) (01/12/90)

I'm looking for information on plant nutrition, and can't
quite find exactly what I want. Perhaps somebody will know,
or have a pointer to the information I want.

It is my understanding that plants need the following
nutrients:

1) Primary.

Nitrogen, Phosphorous, Potassium.

2) Secondary.

Iron, Manganese.

3) Tertiary

Trace elements. Standard Hoaglands.


My questions are:

A) What are specific effects of a surplus and deficiancy of
the individual Primary nutrients? and

B) Among the primary nutrients are any of them required
for proper assimilation of the others ?

This is for aquatic plants, but apart from not having
a cuticle, they are pretty muchthe same as terrestrial
plants.

Thanks.