Print
PDF
Article Index
Foliar Nutrition
Reasons for deficiency
Plant Nutrients
Requirements & signs of deficiencies
Symptoms of nutrient deficiencies
Trace element deficiency table
Influence of the least nutrient
The influence of pH
The effect of pH
Absorbition of nutrients IONS
All Pages

Key to the Classical symptoms of nutrient deficiencies

  Deficiency Symptoms Deficient Nutrient
( I ) The dominant symptom is chlorotic foliage
(1) Entire leaf blades are chlorotic
(1,1) Only the lower leaves are chlorotic followed by necrosis and leaf drop
Nitrogen
(1,2) Leaves on all parts of the plant are affected and sometimes have a beige case
Sulphur
(2) Yellowing of leaves takes form of interveinal chlorosis
(2,1) Only recently mature or older leaves exhibit interveinal chlorosis
Magnesium
(2,2) Only younger leaves exhibit interveinal chlorosis. This is the only symptom
Iron
(A) In addition to interveinal chlorosis on young leaves, grey or tan necrotic spots develop in chlorotic areas
Manganese
(B) While younger leaves have interveinal chlorosis, the tips and lobes of leaves remain green followed by veinal chlorosis and rapid, extensive necrosis of leaf blade
Copper
(C) Young leaves are very small and sometimes missing leaf blades altogether and internodes are short giving a rosette appearance
Zinc
( II ) Leaf chlorosis is not the dominant symptom.
(1) Symptoms appear at the base of the plant
(1,1) At first, all leaves are dark green and then growth is stunted. Purple pigment often develops in leaves, particularly older leaves
Phosphorus
(1,2) Margins of older leaves become chlorotic and then burn, or small chlorotic spots progressing to necrosis appear scattered on leaf blades
Potassium
(2) Symptoms appear at top of plant
(2,1) Terminal buds die giving rise to a witch's broom. Young leaves become very thick and leathery
and chlorotic. Rust-coloured cracks and corking occur on young stems, petioles and flower stalks. Young leaves crinkled
Boron
(2,2) Margins of young leaves fail to form, sometimes yielding strap-leaves. Growing point ceases to develop, leaving a blunt end. Light green colour or uneven chlorosis of young tissue. Root growth is poor in that roots are short and thickened
Calcium

 



Garden Pride
Soluble Foliar Feeds

Insect Eliminator.

Your skin's best friend
Trelmix
Trace Element Mixtures