Nutrients

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

Cotton - Chlorosis

Symptoms
Interveinal chlorosis and subsequent necrosis, starting from the leaf margin.

Reasons
Copper deficiency

Copper deficiency made worse by

  • Organic soils
  • Calcareous soils
  • Sandy soils
  • Reclaimed heathland
  • High nitrogen applications

Copper is important for

  • Improved crop health
  • Increased yields