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Tobacco Diagnostic Key

Integrated Pest Management

13

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  • Disorder Type?
  • Leaf Location?
  • Leaf Condition?
  • Leaf Color?
  • Roots?
  • Plant Size?
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Nitrogen Deficiency details

Nitrogen Deficiency

Characteristics:

Type
Nutrition
Leaf Location
Older
Leaf Condition
Complete chlorosis, Complete necrosis
Leaf Color
Green - pale, Chlorosis (yellow), Necrosis (brown), Bleached
Plant Size
Stunted

Phosphorus Deficiency details

Phosphorus Deficiency

Characteristics:

Type
Nutrition
Leaf Location
Older
Leaf Condition
Complete necrosis, Spotting - brown
Leaf Color
Green - dark dull, Necrosis (brown)
Roots
Elongated
Plant Size
Stunted

Potassium Deficiency details

Potassium Deficiency

Characteristics:

Type
Nutrition
Leaf Location
Older
Leaf Condition
Marginal chlorosis, Interveinal chlorosis, Complete chlorosis, Marginal necrosis, Interveinal necrosis, Complete necrosis, Spotting - brown, Window paning, Distorted, Crooking
Leaf Color
Chlorosis (yellow), Necrosis (brown)
Plant Size
Stunted

Sulfur Deficiency details

Sulfur Deficiency

Characteristics:

Type
Nutrition
Leaf Location
Entire plant, Younger
Leaf Condition
Complete chlorosis
Leaf Color
Green - pale, Chlorosis (yellow), Necrosis (brown)
Plant Size
Stunted

Zinc Deficiency details

Zinc Deficiency

Characteristics:

Type
Nutrition
Leaf Location
Younger
Leaf Condition
Interveinal chlorosis, Complete chlorosis
Leaf Color
Chlorosis (yellow), Necrosis (brown)

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