NUTRITION: Principles

Culture Orchid Doctor

by Robert M. [Bert] Hamilton (Compiler)

Originally published in The Orchid Doctor in 1980 and 1988

Posted by Sys Admin almost 8 years ago.

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Review of all aspects, from a scientific point of view; refer to A61-277+
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Nutrition Comments
NUTRITION: Essential Plant Compounds The awesome chemical phenomenon of photosynthesis; macronutrients (nitrogen, etc.) and micronutrients (Iron, etc.) and their functions in water and potting media; for fascinating details refer to A81-1087 0
NUTRITION: In Tropical Forests Distribution and density of plants, the role of birds and other animals, nutrition from everything possible -- litter, rainfall, throughfall and stemflow; role of epyphylls or run-off from other plants; refer to AU85-(3)-13 0
NUTRITION: Of Plants in the Wild Special problems of nutrients and water uptake, the role of roots, leaves, rainfall, etc.;rrefer to OBII-197 0
NUTRITION: Of Three Orchid Genera N, P, K. and Mg.; scientific studies show cymbidiums and phalaenopsis attain optimal growth at lOOppm. of N., 50 to 100 ppm. of K., and 25ppm. of Mg. and for cattleyas the optimal at 50ppm. each of N.,K.,Mg,; lOOppm. of Mg. decreased growth. AU84-44 (the Poole and Seely study) 0

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