Color Pictures of Mineral Deficiencies in Tomatoes


The Diagnosis of Mineral Deficiencies in Plants by Visual Symptoms
by Thomas Wallace, M.C., D.Sc., A.I.C.

Published by His Majesty's Stationary Office — 1943

— Crown Copyright Reserved —

TOMATOES IN SAND CULTURE — from the 1951 edition

TOMATO PLANT - Nitrogen deficiency. 250. TOMATO PLANT

Nitrogen deficiency

Growth dwarfed, thin and upright habit; stem and petioles rigid; leaves pale green, occasional purplish tints, older leaves yellowing.

TOMATO PLANT - Phosphorus deficiency 251. TOMATO PLANT

Phosphorus deficiency

Growth dwarfed and thin; leaflets droop, curl backward and develop strong, dull purple tints.

TOMATO STEM - Calcium deficiency 252. TOMATO STEM

Calcium deficiency

Death of growing point and die-back of main stem from tip; die-back of leaves, progressing from terminal leaflets and of flower and fruiting trusses.

TOMATO TRUSS - Calcium deficiency 253. TOMATO TRUSS

Calcium deficiency

Dying off of terminal leaflets and flowers; leaves purplish brown tinting.

TOMATO TRUSSES - Calcium deficiency 254. TOMATO TRUSSES — "Blossom End Rot"

Calcium deficiency

Dying back of trusses and "Blossom End Wilt" of distal fruitlets. (cf. Plate No. 265, boron deficiency)

TOMATO LEAF - Magnesium deficiency 255. TOMATO LEAF

Magnesium deficiency

Central intervenal chlorosis and green marginal bands.

TOMATO TRUSS - Magnesium deficiency 256. TOMATO TRUSS

Magnesium deficiency

Leaves intervenal chlorosis and necrosis; fruits show "Green Back".

TOMATO PLANTS - Magnesium deficiency 257. TOMATO PLANTS

Magnesium deficiency

Greenhouse view. Leaves intervenal chlorosis and necrosis.

TOMATO LEAF - Potassium deficiency 258. TOMATO LEAF

Potassium deficiency

Leaflets slight marginal and intervenal chlorosis followed by brown marginal scorching; scorched margins curled foward.

TOMATO FRUIT - Potassium deficiency 259. TOMATO FRUIT

Potassium deficiency

"Blotchy Ripening"; green and yellow areas merging into red color of surface. (cf. Plate 260, mosaic fruits)

TOMATO FRUITS - Tomato Mosaic Virus Disease 260. TOMATO FRUITS - Tomato "mosaic"

Virus Disease

Virus Disease. Blotchy uneven ripening, similar to "Blotchy Ripening" due to potassium deficiency but blotchy areas more sharply defined. (cf. Plate 259, potassium deficiency)


Iron deficiency

Tip leaves, especially basal areas of leaflets, intense chlorotic mottling; stem near tip also yellow. (cf. Plate 262, manganese deficiency)

TOMATO LEAF - Manganese deficiency 262. TOMATO LEAF

Manganese deficiency

Intervenal chlorotic mottling distributed over entire surfaces of leaflets; mottled areas become necrotic. (cf. Plate 261, iron deficiency)

TOMATO SHOOT - Manganese toxicity (soil acidity complex) 263. TOMATO SHOOT

Manganese toxicity (soil acidity complex)

Stem and petioles, especially nodal areas, necrotic lesions; leaves wither and hang down.

TOMATO SHOOT - Boron deficiency 264. TOMATO SHOOT

Boron deficiency

Stems stiff; terminal buds die and growths die back; lateral shoots developed, giving plant flat top; leaves highly tinted purple, brown and yellow.

TOMATO FRUITS - Boron deficiency 265. TOMATO FRUITS

Boron deficiency

Fruits pitted and corky areas in skin; ripening uneven. (cf. Plate 254, calcium deficiency)

TOMATO PLANTS - Molybdenum deficiency 266. TOMATO PLANTS

Molybdenum deficiency

Leaflets somewhat chlorotic, strongly incurled and die back from tips.

TOMATO LEAVES - Molybdenum deficiency 267. TOMATO LEAVES

Molybdenum deficiency

Left: healthy leaf receiving molybdenum. Right: Molybdenum deficient leaf; leaflets, incurled margins, intervenal chlorotic motting and death of tips.

Effects of growing temperatures for Cucumbers and Tomatoes. Cucumber plants top, and tomato plants bottom, were grown for 20 days under controlled environmental conditions. Five different day / night temperatures, starting from 75° / 65° F. and increasing at 5° intervals to 95° / 85° F. were used in this experiment.

(Note: Both tomatoes and cucumbers like warmer temperatures. Many Plants need lower temperatures for optimum growth.)



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  • Oats
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  • Parsnip
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  • Peas
  • Plum
  • Potatoes
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  • Sugar Beet
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    The Diagnosis of Mineral Deficiencies in Plants by Visual Symptoms

    by Thomas Wallace, M.C., D.Sc., A.I.C.

    Color Pictures of Mineral Defeciencies in Plants – 1943

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