Nutrients

N Nitrogen
P Phosphorus
K Potassium
Mg Magnesium
Ca Calcium
S Sulfur
Fe Iron
Mn Manganese
Mo Molybdenum
Zn Zinc

Pepper - Wilting

Symptoms
Total plant size and leaf size are severely reduced, leaves are very chlorotic and wilting, especially the older ones.

Reasons
Severe phosphorus deficiency (right)

Pepper - Chlorosis

Symptoms
The leaf blade has got a mottled, chlorotic appearance. A narrow, necrotic seam occurs along the main vein at the leaf base.

Reasons
Phosphorus deficiency

Pepper - Chlorosis

Symptoms
The leaf blade has got a mottled, chlorotic appearance. By the time, the bigger chlorotic dots towards the leaf margin turn grey and necrotic.

Reasons
Phosphorus deficiency

Pepper - Chlorosis

Symptoms
The leaf blade has got a mottled, partly chlorotic and partly dark green appearance.

Reasons
Phosphorus deficiency

Pepper - Discolouration

Symptoms
Fruit on P deficient plants are often shorter and narrower than normal

Reasons
Phosphorus deficiency on fruit

Phosphorus deficiency vs. optimum made worse by

  • Acidic or very alkaline (calcareaus) soils
  • Low organic matter
  • Cold or wet conditions
  • Crops with a poorly developed root system
  • Soils with low P reserves
  • Soils with a high phosphate capacity
  • Iron rich soils

Phosphorus is important for

  • Ensuring good start and continued growth for high yield
  • Increases fruit set, fruit development and early maturity