Nutrients

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

Tobacco - Growth retardation

Symptoms
Nitrogen deficiency symptoms occur on older leaves first. The leaves become yellow and in cases of severe deficiency they turn whitish and die off. The veins of the leaves do not remain green. Growth of the plant is stunted. Younger leaves show a light green colour and stiff appearance.

Reasons
Nitrogen deficiency Yellowing leaves can be found with sulphur deficiency, too, but chlorosis then starts from the younger leaves and they do not show a whitish colour.

Tobacco - Growth retardation

Symptoms
Nitrogen deficiency symptoms occur on older leaves first. The leaves become yellow and in cases of severe deficiency they turn whitish and die off. The veins of the leaves do not remain green. Growth of the plant is stunted. Younger leaves show a light green colour and stiff appearance.

Reasons
Nitrogen deficiency (right plant) Yellowing leaves can be found with sulphur deficiency, too, but chlorosis then starts from the younger leaves and they do not show a whitish colour.

Tobacco - Growth retardation

Symptoms
Nitrogen deficiency symptoms occur on older leaves first. The leaves become yellow and in cases of severe deficiency they turn whitish and die off. The veins of the leaves do not remain green. Growth of the plant is stunted. Younger leaves show a light green colour and stiff appearance.

Reasons
Nitrogen deficiency Yellowing leaves can be found with sulphur deficiency, too, but chlorosis then starts from the younger leaves and they do not show a whitish colour.

Tobacco - Growth retardation

Symptoms
Nitrogen deficiency symptoms occur on older leaves first. The leaves become yellow and in cases of severe deficiency they turn whitish and die off. The veins of the leaves do not remain green. Growth of the plant is stunted. Younger leaves show a light green colour and stiff appearance.

Reasons
Nitrogen deficiency Yellowing leaves can be found with sulphur deficiency, too, but chlorosis then starts from the younger leaves and they do not show a whitish colour.

Tobacco - Growth retardation

Symptoms
Nitrogen deficiency symptoms occur on older leaves first. The leaves become yellow and in cases of severe deficiency they turn whitish and die off. The veins of the leaves do not remain green. Growth of the plant is stunted. Younger leaves show a light green colour and stiff appearance.

Reasons
Nitrogen deficiency Yellowing leaves can be found with sulphur deficiency, too, but chlorosis then starts from the younger leaves and they do not show a whitish colour.

Tobacco - Growth retardation

Symptoms
Nitrogen deficiency symptoms occur on older leaves first. The leaves become yellow and in cases of severe deficiency they turn whitish and die off. The veins of the leaves do not remain green. Growth of the plant is stunted. Younger leaves show a light green colour and stiff appearance.

Reasons
Nitrogen deficiency Yellowing leaves can be found with sulphur deficiency, too, but chlorosis then starts from the younger leaves and they do not show a whitish colour.

Nitrogen deficiency made worse by

  • Low or high pH soils
  • Sandy or light soils (leaching
  • ) Low organic matter
  • Drought conditions
  • High rainfall (leaching) or heavy irrigation
  • Addition or high levels of non-decomposed organic matter/manure (eg straw)
  • Fast growing crops

Nitrogen is important for

  • Vigorous vegetative growth, production of broad thin leaves
  • High yield and quality