Site Search

HACKER SAFE certified sites prevent over 99.9% of hacker crime.
Midwest Hydroponic and Organic Gardening Supplies

Nutrient Disorders

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.



HACKER SAFE certified sites prevent over 99.9% of hacker crime.