Nutrients

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

Tobacco - Deformation

Symptoms
Symptoms of Zn deficiency start on younger leaves. They become very narrow, and the internode growth is inhibited, producing a rosette-like appearance for the whole plant ('little-leaf'). Furthermore, the leaves show chlorotic to necrotic spots and are ruffled.

Reasons
Zinc deficiency Manganese deficiency also starts with mottled chlorosis on the leaves, but leaf shape is normal and the plant growth is not stunted.

Tobacco - Growth retardation

Symptoms
Symptoms of Zn deficiency start on younger leaves. They become very narrow, and the internode growth is inhibited, producing a rosette-like appearance for the whole plant ('little-leaf'). Furthermore, the leaves usually show chlorotic to necrotic spots and are ruffled. The presented picture shows growth reduction only .

Reasons
Zinc deficiency Manganese deficiency also starts with mottled chlorosis on the leaves, but leaf shape is normal and the plant growth is not stunted.

Zinc deficiency made worse by

  • Organic soils
  • High pH soils
  • Soils rich in phosphorus
  • Soils receiving high phosphorus application
  • Cold wet conditions

Zinc is important for

  • Required in a large number of enzymes and plays an essential role in DNA transcription
  • Involved in auxin (plant hormone) metabolism
  • Increases dry matter yield