Color Pictures of Mineral Deficiencies in Lettuce

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 —


LETTUCE IN SAND CULTURE — from the 1951 edition

 
LETTUCE PLANT - Nitrogen deficiency. 241. LETTUCE PLANT

Nitrogen deficiency

Growth dwarfed and thin; leaves pale green and older leaves yellow and die early.

 
 
LETTUCE PLANT - Phosphorus deficiency 242. LETTUCE PLANT

Phosphorus deficiency

Growth dwarfed; leaves dull green and older leaves turn yellow or brown and die early.

 
LETTUCE PLANT - Calcium deficiency 243. LETTUCE PLANT

Calcium deficiency

Young leaves, margins distorted and scorch; may be followed by Botrytis infection.

 
LETTUCE PLANT - Magnesium deficiency 244. LETTUCE PLANT

Magnesium deficiency

Older leaves chlorotic marbling.

 
LETTUCE PLANT - Potassium deficiency 245. LETTUCE PLANT

Potassium deficiency

Leaf color dark green; older leaves severe marginal and intervenal scorch. Marginal browning of younger leaves is due to Botrytis.

 
LETTUCE PLANT - Manganese deficiency 246. LETTUCE PLANT

Manganese deficiency

Leaves chlorotic marbling.

 
 

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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