Nutrients

N Nitrogen
P Phosphorus
K Potassium
S Sulphur

Grassland - Chlorosis

Symptoms
Older leaves show tip chloroses and dieback. Diffuse brown blotches disperse on the leaf blade and coalesce to further necrosis.

Reasons
Potassium deficiency Though direct impact of potassium deficiency is only rarely observed, K appears to play an important role in tolerance of heat, drought and cold.

Grassland - Chlorosis

Symptoms
Older leaves show tip chloroses and necrosis, proceeding towards the leaf base.

Reasons
Potassium deficiency Though direct impact of potassium deficiency is only rarely observed, K appears to play an important role in tolerance of heat, drought and cold.

Grassland - Growth retardation

Symptoms
Reduced growth in length.

Reasons
Potassium deficiency (right) Though direct impact of potassium deficiency is only rarely observed, K appears to play an important role in tolerance of heat, drought and cold.

Grassland - Chlorosis

Symptoms
Older leaves show tip chloroses and dieback. Diffuse brown blotches disperse on the leaf blade and coalesce to further necrosis.

Reasons
Potassium deficiency (right) Though direct impact of potassium deficiency is only rarely observed, K appears to play an important role in tolerance of heat, drought and cold.

Grassland - Chlorosis

Symptoms
Older leaves show tip chloroses and dieback. Diffuse brown blotches disperse on the leaf blade and coalesce to further necrosis.

Reasons
Potassium deficiency Though direct impact of potassium deficiency is only rarely observed, K appears to play an important role in tolerance of heat, drought and cold.

Grassland - Chlorosis

Symptoms
Older leaves show tip chloroses and dieback. Diffuse brown blotches disperse on the leaf blade and coalesce to further necrosis.

Reasons
Potassium deficiency Though direct impact of potassium deficiency is only rarely observed, K appears to play an important role in tolerance of heat, drought and cold.

Potassium deficiency made worse by

  • Acidic soils (low pH)
  • Sandy or light soils (leaching)
  • Drought conditions
  • High rainfall (leaching)
  • or heavy irrigation
  • Heavy clay (illite) soils
  • Soils with low K reserves
  • Magnesium rich soils

Potassium is important for

  • Internal water regulation
  • Vigorous growth and healthy foliage
  • Required in large amounts