The Diagnosis of Mineral Deficiencies in Plants by Visual Symptoms
Published by His Majesty's Stationary Office — 1943
— Crown Copyright Reserved —
ONIONS IN SAND CULTURE — from the 1951 edition
by Thomas Wallace, M.C., D.Sc., A.I.C.
247. Onion Plant
Potassium deficiency
Dying back of leaves from tips and dying off of older leaves.
248. Leek Plants
Nitrogen and phosphorus deficiencies
Left: nitrogen deficient, growth dwarfed and thin, leaves pale green,
tip die-back. Right: phosphorus deficient, growth dwarfed and thin,
leaves dull green, tip die-back.
249. Leek Plants
Calcium deficiency
Growth dwarfed; leaves chlorosis developing from tips followed by die-back.
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Color Pictures of Mineral Defeciencies in Plants – 1943
Using Hydroponics to Understand the Earth's Life Processes
Understanding Colloidal Suspensions
" The Art of Healing Ourselves "
The Diagnosis of Mineral Deficiencies in Plants by Visual Symptoms
by Thomas Wallace, M.C., D.Sc., A.I.C.
on the Atomic Level
The Tortoise Shell Hydroponic Reference Center
Plants need to absorb what you feed them.
Only You can bring Good Health and Healing into Your Body.