Product Type
Broad-spectrum biofungicide
2 CARB
Contact biofungicide based on potassium hydrogen carbonate for preventive and curative control of powdery mildew, botrytis and penicillium.
2 CARB is a contact biofungicide based on potassium hydrogen carbonate, described in the datasheet as having preventive and curative action against powdery mildew, botrytis and penicillium.
Its mode of action is linked to changes in pH, osmotic pressure and the bicarbonate/carbonate ion balance in susceptible fungi, acting on contact and inhibiting mycelial hyphae and spores.
Technical Profile
Key product information at a glance.
Origin
Mineral origin
Key Composition
Potassium hydrogen carbonate 990 g/kg (99% w/w equivalent)
Application
Foliar spray · Post-harvest immersion or surface treatment
Available Pack Sizes
1 kg · 5 kg · 20 kg
Composition and guaranteed analysis
| Composition | % w/w |
|---|---|
| Potassium hydrogen carbonate | 99.0 |
Key benefits and agronomic effects
- High effectiveness against ectoparasitic fungi.
- Broad spectrum of action.
- Compatible with all types of treatment programs.
- Non-interfering in vinification processes and presented as an alternative to sulfur.
- The datasheet describes the active ingredient as having very low toxicity.
How it works / Technical advantages
The datasheet describes two modes of action against ectoparasitic fungi: direct desiccant action on spores, hyphae and mycelia, and a preventive surface effect associated with a slight increase in pH that hinders fungal establishment.
It is also presented as a basic substance and as usable in organic farming under the regulations cited in the datasheet.
Application rates and timing
Application Guidance: General foliar rate: 350-1,000 g/hl with 300-600 L/ha spray volume; apple trees 500-1,000 L/ha. Follow the crop-specific rates and observations in the datasheet.
Foliar application
| Crops | Timing | Dose | Notes |
|---|---|---|---|
| Vegetables in general, berries and general ornamentals | From the second true leaf unfolded (BBCH 12) until full fruit ripening (BBCH 89); 1-8 applications every 10 days. | 350-1,000 g/hl | Objective: powdery mildew caused by Oidium spp., Sphaerotheca fuliginea, Erysiphe cichoracearum and Podosphaera xanthii. |
| Wine grape | From the second true leaf unfolded (BBCH 12) until berries are ready to harvest (BBCH 89). | 450-2,000 g/hl | Objective: powdery mildew (Erysiphe necator). |
| Apple tree | From emerging leaf tips (BBCH 10) until change in fruit color (BBCH 85). | 500-1,000 g/hl | Objective: apple scab (Venturia inaequalis). |
Other applications
| Crops | Timing | Dose | Notes |
|---|---|---|---|
| Post-harvest oranges, cherries, apples, papayas and other fruits | Post-harvest on harvested fruit; 1-2 applications every 10 days. | 1,000-4,000 g/hl | Immersion or surface treatment. Objective: blue mold (Penicillium italicum) and green mold (Penicillium digitatum). |
Additional technical information
Target problem / deficiency symptoms
Powdery mildew, botrytis, penicillium, apple scab, blue mold and green mold, plus the additional authorized woody-crop uses referenced in the datasheet.
Mixing & compatibility
The datasheet states that 2 CARB can be alternated or mixed with fungicidal products under strong disease pressure. Avoid mixing with oil-based formulations and calcium-based products.
Precautions & storage
Concentrations higher than 1%-2% may cause phytotoxic symptoms. Crop sensitivity varies; verify phytotoxic effects before use.
Frequently asked questions
What is 2 CARB used for?
2 CARB is a contact biofungicide with preventive and curative action documented for diseases including powdery mildew, botrytis and penicillium.
What is the active ingredient in 2 CARB?
The datasheet lists potassium hydrogen carbonate at 990 g/kg.
Can 2 CARB be tank-mixed?
The datasheet allows alternation or mixing with fungicidal products under strong disease pressure but advises avoiding oil-based and calcium-based products.
What foliar rate does the datasheet give?
The general foliar rate is 350-1,000 g/hl, with crop-specific rates shown in the application table.
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