The Diagnosis of Mineral Deficiencies in Plants by Visual Symptoms
Published by His Majesty's Stationary Office — 1943
— Crown Copyright Reserved —
PEAS IN SAND CULTURE — from the 1951 edition
by Thomas Wallace, M.C., D.Sc., A.I.C.
199. Pea Plants
Phosphorus Deficiency
Growth dwarfed and thin; leaves dull, lustreless green; older leaves
wither and die early.
200. Pea Stem and Foliage
Calcium deficiency
Young stems, pedicels and leaf tissues wilt and collapse.
201. Peas Leaves
Magnesium deficiency
Central intervenal chlorosis and green marginal bands.
202. Pea Plants
Potassium deficiency
Young internodes very short and plants squat; older leaves marginal scorch.
203. Pea Leaves
Manganese deficiency
Intervenal chlorosis beginning at margins.
204. Pea Seeds
Manganese deficiency
Brown lesions in centers of cotyledons. ("Marsh Spot")
205. Pea Plants
Boron deficiency
Stems thickened and stiff, growth squat and bushy habit; foliage chlorotic,
young leaflets small and tips brown; growing points die.
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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.