Color Pictures of Mineral Deficiencies in Potato

from

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 —


POTATO IN SAND CULTURE — from the 1951 edition

 
Potato Plant in Sand Culture - Complete mineral nutrient 01. Potato Plant in Sand Culture

Complete mineral nutrient

Growth normal; foliage healthy green color.

 
Potato Plant in Sand Culture - Nitrogen deficiency 02. Potato Plant in Sand Culture

Nitrogen deficiency

Growth severely restricted, few stems; yellowing of older foliage.

 
Potato Plant in Sand Culture - Phosphorus deficiency 03. Potato Plant in Sand Culture

Phosphorus deficiency

Growth thin, few stems; leaflets marginal scorch, older leaves shed.

 
Potato Plant in Sand Culture - Calcium deficiency 04. Potato Plant in Sand Culture

Calcium deficiency

Growth fairly good; bushy appearance; young leaflets small, slightly chlorotic, forward roll and marginal scorch. This plant failed to form tubers of appreciable size. (see Plate No. 160)

 
Potato Plant in Sand Culture - Magnesium deficiency 05. Potato Plant in Sand Culture

Magnesium deficiency

Growth fairly normal; foliage slightly pale; older leaflets develop central necrosis, turn yellow or brown and wither prematurely.

 
Potato Plant in Sand Culture - Potassium deficiency 06. Potato Plant in Sand Culture

Potassium deficiency

Growth tends to be squat and bushy; leaflets bluish green and slight intervenal chlorosis, marginal scorch and brown spots on under surface.

 
Potato Leaves - Nitrogen deficiency 155. Potato Leaves

Nitrogen deficiency

Right: nitrogen deficient leaf, pale green and yellow tinted, contrasted with left, normal green leaf with ample nitrogen supply.

 
Potato Leaf - Phosphorus deficiency 156. Potato Leaf

Phosphorus deficiency

Leaflets, lustreless green, marginal scorch and forward curling of margins. (cf. Plate No. 164, potassium deficiency)

 
Potato Shoots - Calcium deficiency 157. Potato Shoots

Calcium deficiency

Acute deficiency condition. Shoots become thin; leaflets of terminal leaves small, margins chlorotic, incurled and may develop faint pink tints or necrotic brown spots or scorch; tips of leaflets die.

 
Potato Plant - Calcium deficiency 158. Potato Plant

Calcium deficiency

Field plant. Bushy growth habit, thin shoots, small terminal leaves and scorched leaflets.

 
Potato Plants - Calcium deficiency 159. Potato Plants

Calcium deficiency

Field view showing calcium deficiency induced by heavy potassic manuring on acid soil. Left foreground: no potash; plants bushy and squat, due to potash deficiency; Right foreground: heavy potassic manuring; plants tall, leaves rolled due to calcium deficiency.

 
Potato Tubers - Calcium deficiency 160. Potato Tubers

Calcium deficiency

Top: calcium omitted, tubers dwarfed and useless; bottom: complete mineral nutrient, tubers normal.

 
Potato Leaf - Magnesium deficiency 161. Potato Leaf

Magnesium deficiency

Central intervenal necrosis pattern.

 
Potato Plants - Magnesium deficiency 162. Potato Plants

Magnesium deficiency

Field view. Leaves pale green, central intervenal chlorosis followed by necrosis and withering.

 
Potato Foliage - Potassium deficiency 163. Potato Foliage

Potassium deficiency

"Bronzing" due to brown spotting, and scorching of leaves.

 
Potato Leaf - Potassium deficiency 164. Potato Leaf

Potassium deficiency

Leaflets bluish green, slight intervenal chlorosis and backward curling of margins; intervenal spotting, marginal scorching. (cf. Plate No. 156, phosphorus deficiency)

 
Potato Foliage - Iron deficiency 165. Potato Foliage

Iron deficiency

Young leaver strongly chlorotic; veins may remain green; margins and tips brown patches.

 
Potato Plant - Iron and Potassium deficiencies 166. Potato Plant

Iron and Potassium deficiencies

Young leaves chlorotic due to iron deficiency; older leaves brown spotting and scorch due to potassium deficiency.

 
Potato Leaves - Manganese deficiency 167. Potato Leaves

Manganese deficiency

Leaves from near tips of shoots still green, but showing characteristic brown spotting, mainly along veins.

 
Potato Plants - Manganese deficiency 168. Potato Plants

Manganese deficiency

Field view. Stunted growth and dying of haulm at tips; leaflets of young leaves small, slightly chlorotic and strong forward curling of margins.

 
Potato Plant - Manganese toxicity (soil acidity complex) 169. Potato Plant

Manganese toxicity (soil acidity complex)

Severe toxicity. Necrotic lesions on leaves, mainly along veins and on petioles and stems.

 
Potato Plant - Boron deficiency 170. Potato Plant

Boron deficiency

Growth stunted; growing point killed; leaves dull grayish green, changing to yellow before dying off.

 
Potato Leaves - Boron toxicity and magnesium deficiency 171. Potato Leaves

Boron toxicity and magnesium deficiency

Boron toxicity shown by narrow brown rims on leaflets; magnesium deficiency by intervenal necrosis and withering.

 
Potato Foliage - Chloride injury 172. Potato Foliage

Chloride injury

Leaflets of terminal leaves slightly chlorotic, margins scorched and turned forward.

 
Potato Plant in Sand Culture 1. Complete Nutrient Solution — Healthy growth.

Potato Plant in Sand Culture

Growth Normal; foliage healthy green color.

 
Potato Plant in Sand Culture 2. Nitrogen Deficiency — Severely restricted growth, upright habit.

Potato Plant in Sand Culture

Growth small and single thin shoots; upright habit; leaves pale green color.

 
Potato Plant in Sand Culture 3. Phosphorus Deficiency — Restricted growth, leaves rolled forward.

Potato Plant in Sand Culture

Growth small and shoots thin; upright habit; leaves slightly pale, with forward roll and scorched margins; defoliation of oldest leaves.

 
Potato Plant in Sand Culture 4. Calcium Deficiency — Tip leaves small, rolled and scorched.

Potato Plant in Sand Culture

Growth fairly good; young leaves chlorotic, forward roll and marginal scorch. This plant failed to form tubers of appreciable size.

 
Potato Plant in Sand Culture 5. Magnesium Deficiency — Chlorosis and necrosis of leaves, defoliation.

Potato Plant in Sand Culture

Growth fairly good; foliage chlorotic and with intervenal necrosis; death of older foliage and severe defoliation.

 
Potato Plant in Sand Culture 6. Potassium Deficiency — Marginal leaf scorch.

Potato Plant in Sand Culture

Growth fairly good; leaves bluish-green and intervenal chlorosis, spotting and marginal scorch present.

 
 

Index

  • Flax
  • Hops
  • Kale
  • Lettuce
  • Maize
  • Mangold
  • Oats
  • Onion
  • Parsnip
  • Pear
  • Peas
  • Plum
  • Potatoes
  • Radish
  • Rape
  • Rye
  • Spinach
  • Sugar Beet
  • Swede
  • Table Beets      
  • Tomatoes
  • Turnips
  • Wheat
  • Top of Page

    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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