North American Fruit Explorers mailing list at ibiblio

[charles paradise <machelp@attglobal.net>]

Color pictures
from 1943 showing nutrient deficiencies in various plants and trees

I like
14. Brussels Sprout Plant — Purpling of leaves.

                              Phosphorus Deficiency

                              Plant has remained stunted; leaves
                              bluish-green with dull purple tints.
and 41. Apple Tree — Defoliation of shoots.

                              Magnesium Deficiency

                              Defoliation of terminal shoots progressing from
                              base to tip.

This previous-page link was originally posted to NAFEX list in 2002 by another - I think its worth reposting with this link direct to the pictures.
.
Charlie Paradise