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Performance & Quality · Solutions

How to Improve Tomato Color and Ripening

Uneven colour — yellow shoulders, blotchy ripening, green backs — is a common tomato downgrade, worse under heat and potassium imbalance. Even, full red at harvest lifts grade and shelf appeal for fresh-market and processing crops alike.

Common crops affected

Why it matters

Colour drives grade, shelf appeal, and price; it forms during ripening and depends on leaf health, light, and potassium, so a finishing program lifts it.

When it appears

During fruit ripening — the finishing window.

What drives it

  • Lycopene development, inhibited by high heat
  • Potassium supply and balance
  • Even light and load across the plant
  • Consistent water during ripening

How to manage it

  1. Protect leaf health and light exposure; avoid late nitrogen.
  2. Apply Color Boost through ripening.

Recommended Vegalab program

Color Boost — encapsulated nutrition and potassium cofactors released during fruit ripening to support even colour.

Results you can mention: in citrus field trials, Sun Boost increased tree vigour and bloom; the firmness, cracking and stress products are positioned on cell-wall/calcium and biostimulant modes of action — keep this copy educational where specific-crop trial figures aren't yet available.

RoleProductUse
Colour enhancerColor BoostEnhances fruit & flower colour
PotassiumPotassium ProSupports colour & sugar movement

Apply from early colour through ripening on the label interval; manage heat, potassium and irrigation consistency together.

Product claims, rates, and availability vary by jurisdiction; always follow the applicable label.

Frequently asked questions

Why do I get yellow shoulders in heat?

High temperatures inhibit lycopene at the shoulder — steady potassium, shading and even ripening support reduce it.