Tomatoes

Tomatoes

In the United States, approximately 316,000 acres of tomatoes are grown every year. Two-thirds of field-grown tomatoes are grown in California and Florida due to their warm climates and longer growing seasons.

To successfully grow tomatoes, the key nutrients for production include nitrogen, phosphorus, potassium, calcium, and magnesium. Deficiencies in these nutrients result in a loss of crop quality and a reduction in overall yield. Utilize a complete crop nutrition program to maximize crop quality and yield at harvest.

Use the images below to diagnose nutrient deficiencies in your tomato fields.

Nitrogen is mobile in the plant. Symptoms will appear as chlorosis first on lower leaves and stunted growth.

Phosphorus is responsible for capturing and converting the sun’s energy. Plants deficient in phosphorus exhibit purpling on the leaves, mainly near the leaf veins.

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Potassium is mobile within the plant, causing deficiency symptoms to appear first in older leaves. Leaf symptoms appear as yellowing to necrosis on the outer edge of leaves.

Sulfur appears in every living cell and is important for photosynthesis. Plants deficient in sulfur will be stunted and pale green in color. Symptoms mainly appear in new growth.

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Calcium deficiency causes blossom-end rot. Rapidly growing areas will become necrotic.

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Vegetative growth shows a mottling pattern with interveinal chlorosis. As the deficiency becomes severe, leaves become necrotic.

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Nutrient Deficiencies