The Diagnosis of Mineral Deficiencies in Plants by Visual Symptoms
Published by His Majesty's Stationary Office — 1943
— Crown Copyright Reserved —
SWEDE IN SAND CULTURE — from the 1951 edition
by Thomas Wallace, M.C., D.Sc., A.I.C.
0100. Swede Plants
Phosphorus deficiency
Older leaves dull purple tints, wither early.
0101. Swede Plant
Calcium deficiency (soil acidity complex)
Leaf margins curled forward, wilted and scorched.
0102. Swede Plant
Magnesium deficiency
Older leaves red marbling, some varieties chlorotic marbling (see
Plate No. 0103)
0103. Swede Leaves
Magnesium deficiency
Old leaves showing chlorotic marbling (see
Plate No. 0102)
0104. Swede Plant
Potassium deficiency
Leaves dull green with marginal and intervenal chlorosis; margins
scorched and curled forward.
0105. Swede Plants
Manganese toxicity (soil acidity complex)
Leaves chlorotic mottling, especially near margins, and margins of young leaves incurled and scorched.
0106. Swede Plant
Boron deficiency
Mottling and tinting of foliage and death of growing point.
0107. Swede Roots
Boron deficiency
Rough skin condition which may accompany "Brown Heart" condition.
0108. Swede Roots
Boron dificiency
Longitudinal and transverse sections. Water-soaked and brown areas.
"Brown Heart" condition.
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Color Pictures of Mineral Defeciencies in Plants – 1943
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The Diagnosis of Mineral Deficiencies in Plants by Visual Symptoms
by Thomas Wallace, M.C., D.Sc., A.I.C.
on the Atomic Level
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