|
Nutrient |
Deficiency |
Excess |
Nitrogen |
Older leaves turn chlorotic and may eventually die. Plant is stunned.
Foliage is light green. |
Plant becomes over
vigorous. Leaves become very dark green. Fruit clusters have excessive growth and fruit
ripening is delayed. |
Potassium |
Older leaves appear chlorotic between veins, but veins remain green. Leaf
edges may burn or roll. |
Uncommon to show toxicity. Secondary manganese deficiency may occur. |
Phosphorus |
Stem, leaf veins,
petioles turn yellow, followed by reddish-purplish as phosphorous is drawn from them into
the new growth. Seedlings may develop slowly. Fruiting is poor. |
No direct toxicity. Copper and zinc availability may be reduced. |
Calcium |
Plant is stunned. Young leaves turn yellow. Blossoms die and fall off.
Tomatoes may develop brown spots on the fruit. |
No direct toxicity. |
Sulfur |
Younger leaves become yellow with purpling at base. Older leaves turn light
green. |
Small leaves |
Iron |
New growth pales, veins stay green. Blossoms drop off. Yellowing between
veins. |
Very Uncommon |
Magnesium |
Older leaves curl and yellow areas appear between veins. Young leaves curl
and become brittle. |
No direct toxicity. |
Zinc |
Leaves become chlorotic between veins and often develop necrotic spots. |
Reduces availability of iron. |
Molybdenum |
Older leaves turn yellow and leaf margins curl. |
Rare tomato leaves may turn bright yellow. |
Copper |
Pale yellow. Leaves become spotted. Plants stunted. |
May reduce availability of iron. |