Nutrients

N Nitrogen
P Phosphorus
K Potassium
Mg Magnesium
B Boron
Cu Copper
Fe Iron
Mn Manganese

Oil Palm - Chlorosis

Symptoms
Chlorosis starts from the leaf margin, the leaves turn uniformly yellow. Later, the leaf margins become necrotic.

Reasons
Manganese deficiency Similar symptoms are visible with potassium deficiency, but they show spotty chlorosis which is more orange.

Oil Palm - Chlorosis

Symptoms
Chlorosis starts from the leaf margin. With ongoing deficiency more and more yellow stripes occur between the leaf veins. Subsequently there occur dark brown necrotic spots and streaks within the chlorotic areas.

Reasons
Manganese deficiency Similar symptoms are visible with potassium deficiency, but they show spotty chlorosis which is more orange.

Manganese deficiency made worse by

  • Organic soils
  • Sandy soils
  • High pH
  • Cold wet periods
  • Fluffy soils

Manganese is important for

  • Essential for photosynthesis
  • Enzyme activity in protein, carbohydrate and lipid synthesis
  • Cell division and extension
  • Needed for vigorous, healthy leaf growth