How to store carrots in a vegetable store?

How to Store Carrots Properly: Technologies That Protect Quality, Flavor and Profitability

Perhaps this article comes out a little later than planned… but like a good wine, it has only improved with age.
Here’s the background. When the world went into lockdown and offline events collapsed overnight, webinars suddenly became our main way to stay connected. At one of these online discussions, we debated the challenges of the Russian greenhouse industry — and one recurring problem emerged: large retail chains are reluctant to work with farmers and small producers who cannot supply fruits and vegetables year-round.

This creates a chain reaction. Hypermarkets increasingly receive produce of substandard quality. Why? Because suppliers are forced to compete on price rather than quality, pushing margins down and encouraging cost-cutting at every stage of production. It becomes a vicious cycle.

But there is always demand for high-quality produce. In today’s market, quality is the baseline requirement, and the sooner relationships between retailers and producers evolve, the sooner consumers will see consistently fresh, flavorful products on store shelves.

And that brings us to storage — one of the most important steps in preserving quality.

How to Store Carrots in a Vegetable Cold Store

Carrots are harvested at the end of August or September. During the final month before harvest, the root accumulates sugars, carotenoids and dry matter - compounds that significantly extend storage life.

However, the integrity of each root crop must be maintained during harvest. Damage accelerates spoilage, reduces storage life and increases the likelihood of fungal infection.

Pre-Storage Preparation

Before carrots enter the vegetable store, they must undergo proper processing.

1. Removal of Green Tops

The green mass must be completely removed.
If left attached, it continues to draw moisture from the root, causing rapid wilting and loss of marketability.

The better the preparation, the better the storage outcome.

2. Drying (If Weather Is Wet)

If harvest conditions are damp, the crop needs drying. Excess moisture is one of the main causes of rot.
Carrots are highly vulnerable to fungal diseases that may develop after storage begins, damaging up to 70% of the entire harvest.

Why Fungal Diseases Develop

Fungal infections in carrot storage are triggered by:

damaged roots entering storage
harvesting in rainy or frosty conditions
poor soil nutrition
moisture stagnation in warm soil
incorrect temperature and humidity inside the store

To prevent disease, carrots must be cooled to 0–+1°C before storage, and this temperature should be maintained consistently throughout the entire period.
Humidity should remain at 90–95%.

Rapid cooling reduces storage losses dramatically. Only intact, non-withered and non-frostbitten roots should be stored.

Carrot Storage Technology

The optimal storage method depends on:

storage volume
storage type and size
climate zone
infrastructure characteristics
customer’s budget
filling speed (from harvest to storage should be no more than 24 hours)

Carrots with dry soil residues generally store better, so they should not be aggressively cleaned. Damaged or defective roots must be removed immediately.

Storage Methods

1. Mound Storage

The mound height depends on carrot variety and the strength of the ventilation system.
Typical height: 2–3 meters.

2. Bag Storage

When stored in bags, stack height should not exceed 3 meters to avoid compression and damage.

3. Container Storage (Recommended)

Containers offer the best airflow and minimal mechanical damage.
Container stacks can reach up to 5.5 meters — ideal for large-scale storage facilities.

Cooling System Requirements

Carrot storage chambers must be equipped with a high-capacity cooling system.

Carrots must be cooled to 0°C within 24 hours after harvest.
After cooling, chamber temperature must remain between 0 and +1°C.
Relative humidity must stay between 95–98%.

Following these conditions allows carrots to be stored for up to 12 months.

4 Golden Rules for Ideal Carrot Storage

Cool the harvest to 0°C immediately after collection.
Maintain constant climate conditions: 0 to +1°C temperature and 95–98% humidity.
Disinfect storage rooms and continuously remove low-quality roots.
Use professional microclimate systems and tailored technological solutions.