Nutrients

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

Tomato - Wilting

Symptoms
Affected plants look less vigorous; they have less foliage with reduced leaf blade. Intercostal leaf areas may become pale green with whitish to yellow-brown necrosis.

Reasons
Copper deficiency (left)

Copper deficiency vs. optimum made worse by

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

Copper is important for

  • Photosynthesis
  • Enzyme process
  • Manufacturing lignin
  • Protein synthesis