Nutrients

N Nitrogen
P Phosphorus
K Potassium
Mg Magnesium
Ca Calcium
S Sulphur
B Boron
Cu Copper
Fe Iron
Mn Manganese
Zn Zinc

Strawberry - Chlorosis

Symptoms
Symptoms begin at young leaves. At first leaves turn pale green. With progressing deficiency they turn uniformly yellow.

Reasons
Sulphur deficiency Sulphur deficient leaf blades contain less than 100ppm sulphate, dry basis. Yellowing also appears with nitrogen and molybdenum deficiencies.

Sulphur deficiency made worse by

  • Acidic soils
  • Light, sandy soils (leaching)
  • Low organic matter
  • Poorly aerated soils (waterlogged soils
  • ) Areas with low industrial emissions

Sulphur is important for

  • Improved crop development