Nutrients

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

Oil Palm - Growth retardation

Symptoms
The whole plant becomes pale green, and especially the older leaves and the midribs of the fronds show a yellow colour. Newly formed leaves remain smaller which gives the plant a 'flat top apearance'. Total growth is stunted.

Reasons
Nitrogen deficiency

Oil Palm - Chlorosis

Symptoms
The leaves becomes pale green; especially the base of the pinnae shows a yellowgreen colour.

Reasons
Nitrogen deficiency

Oil Palm - Chlorosis

Symptoms
The leaves becomes pale green; especially the base of the pinnae shows a yellowgreen colour.

Reasons
Nitrogen deficiency

Oil Palm - Growth retardation

Symptoms
The whole plant becomes pale green, and especially the older leaves and the midribs of the fronds show a yellow colour. Newly formed leaves remain smaller which gives the plant a 'flat top apearance'. Total growth is stunted.

Reasons
Nitrogen deficiency (left)

Oil Palm - Growth retardation

Symptoms
The whole plant becomes pale green, and especially the older leaves and the midribs of the fronds show a yellow colour. Newly formed leaves remain smaller which gives the plant a 'flat top apearance'. Total growth is stunted.

Reasons
Nitrogen deficiency

Nitrogen deficiency made worse by

  • Low or high pH soils
  • Sandy or light soils (leaching)
  • Low organic matter
  • Drought conditions
  • High rainfall (leaching) or heavy irrigation
  • Addition or high levels of non-decomposed organic matter/manure (eg straw)
  • Fast growing crops

Nitrogen is important for

  • "Promotes growth and net assimilation rate
  • Increases leaf area and leaf production, which is one factor of high yield
  • Increases fruit bunch and total oil yield
  • "