The Diagnosis of Mineral Deficiencies in Plants by Visual Symptoms
Published by His Majesty's Stationary Office — 1943
— Crown Copyright Reserved —
PEAR TREES — from the 1951 edition
by Thomas Wallace, M.C., D.Sc., A.I.C.
288. Pear Leaves
Nitrogen deficiency
High yellow, red and purple tints.
289. Pear Leaves
Magnesium deficiency
Central intervenal necrosis.
290. Pear Folliage
Potassium deficiency
Leaves dark brown marginal scorching.
291. Pear Folliage and Fruits
Iron deficiency
Leaves severly chlorotic and brown marginal areas; fruits ground color, pale and highly flushed. (cf.
Plate No. 292, manganese deficiency)
292. Pear Leaves
Manganese deficiency
Somewhat faint intervenal chlorosis beginning near margins. (cf.
Plate No. 291, iron deficiency)
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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.