The Diagnosis of Mineral Deficiencies in Plants by Visual Symptoms
Published by His Majesty's Stationary Office — 1943
— Crown Copyright Reserved —
PAESNIP IN SAND CULTURE — from the 1951 edition
by Thomas Wallace, M.C., D.Sc., A.I.C.
226. Parsnip Leaves
Calcium deficiency
Collapse of petioles and laminae.
227. Parsnip Leaves
Magnesium deficiency
Older leaves, severe intervenal chlorosis, beginning at margins; affected
leaves die off early. (c.f.
Plate No. 229, manganese deficiency;
Plate No. 231, boron deficiency)
228. Parsnip Plant
Potassium deficiency
Older leaves marginal chlorosis, followed by scorching; scorched leaflets,
margins rolled forward.
229. Parsnip Leaf
Manganese deficiency
Severe marginal and intervenal chlorosis. (cf.
Plate No. 227, magnesium deficiency)
230. Parsnip Plants
Boron deficiency
Young leaves distorted and die out; growing point killed.
231. Parsnip Leaves
Boron deficiency
Older leaves marginal and intervenal chlorosis with orange tinting;
leaflets tip and marginal browning. (cf.
Plate No. 227, magnesium deficiency)
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Color Pictures of Mineral Defeciencies in Plants – 1943
Using Hydroponics to Understand the Earth's Life Processes
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" 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.
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