DisorderMedium Severity

Potassium Deficiency

A nutritional disorder caused by inadequate potassium availability in soil. Potassium is essential for carbohydrate formation, starch formation, and meristematic activity in plants. Shows different symptoms on broadleaf plants versus conifers.

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Plant leaves showing symptoms of potassium deficiency with marginal browning

Identification & Symptoms

What to Look For

Marginal and interveinal chlorosis on broadleaf plants
Scorching between main veins starting with older leaves
Leaf crinkling and upward rolling
Shoot tip dieback late in season
Zigzag, short, brushy growth from lateral buds
Few flower buds form
Small fruit with poor color
Dark blue-green oldest foliage on conifers
Yellow and reddish-brown needle tip necrosis
Poor needle retention and stunted needles
Short, thick, abundant buds

Potential Damage

Reduced carbohydrate and starch formation
Impaired meristematic activity
Poor fruit quality and reduced flowering
Increased susceptibility to frost injury
Stunted growth and poor plant vigor

Lifecycle

Nutritional deficiency develops when potassium salts in soil are not readily available to plants, often due to soil conditions or nutrient imbalances.

Professional Treatment Approach

1

Soil testing to confirm potassium deficiency

2

Apply potassium-rich fertilizers

3

Improve soil pH if needed

4

Use slow-release potassium formulations

5

Foliar applications for quick response

6

Improve overall soil health and drainage

Recommended Mauget Products

Inject-A-Min Iron Zinc

Professional-grade treatment specifically effective against potassium deficiency.

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Stemix Plus

Professional-grade treatment specifically effective against potassium deficiency.

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