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