Carb-O-Nator

CaroVail · Potassium Bicarbonate 85 00% · EPA Reg 70051-117 · Fungicide Document last checked 2026-05-30

About this product

Active ingredient Potassium Bicarbonate 85 00%

Manufacturer CaroVail

Category Fungicide

Full details for Carb-O-Nator

Source product label ↗ Open the catalog source label while the local copy is reviewed. Verify the product name, EPA registration number, and revision before use. Source safety data sheet ↗ Open the catalog source SDS while the local copy is reviewed. Verify the exact product and revision before relying on it. EPA registration data Reg. 70051-117 — registry reference, signal word and status.

Applicator discussion

Nothing here is label direction — the label is the law. These are notes from other applicators, moderated before they appear. Check the labeling accompanying the product and applicable state requirements.

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According to the label From the product label

These details were extracted from this product's label PDF. The label is the law. Confirm every rate, site, restriction and safety requirement against the label before mixing or applying. Check for a state supplemental label; a product may be restricted or prohibited in a state or site even when a rate appears below. · EPA registration data for Reg. 70051-117 →

Carb-O-Nator is a broad-spectrum, contact foliar fungicide used to control a wide variety of diseases on agricultural crops, terrestrial and ornamental plants, greenhouse and nursery crops, and turf. Its active ingredient is Potassium Bicarbonate (85.00%). It is OMRI listed for use in organic production. The product is applied as a spray solution to ensure complete coverage of all stems and foliage. For field applications, the rate is 2.5 to 5 pounds per 100 gallons of water. For greenhouse and ornamental applications, the rate is 2.5 to 5 pounds per 100 gallons of water, with specific volume requirements per unit area. Users should note that the final spray solution should not be below 7.0 pH. It is critical to avoid applying this product through any irrigation system. When mixing, add half to two-thirds of the water to the tank before adding the product, then add the remaining water while agitating. Always dispose of unused spray solution on-site within 12 hours of preparation. This product has a Pre-Harvest Interval (PHI) of 0 days on all listed crops.

Pests covered (1)

variety of diseases

Areas treatable (1)

agricultural crops, terrestrial and ornamental plants, greenhouse and nursery crops, and turf

How to treat each type of area 1

agricultural crops, terrestrial and ornamental plants, greenhouse and nursery crops, and turf

Target pest	Location	Rate	Unit	Dilution	Label notes
variety of diseases	Both	2.5 to 5 lbs	per 100 gallons of water	2.5 to 5 lbs per 100 gallons	Apply at first sign of disease. For best protection, repeat at one to two week intervals. Shorten interval during rainy weather or high humidity.

Mixing instructions 1

For pests	Amount	Per	Label notes
fungal diseases	2.5 to 5 lbs	100 gallons	Fill 1/2 to 2/3 of the tank with water before adding product; add remaining water while agitating. Do not use through irrigation systems. Spray solution pH should not be below 7.0.

Worker safety

Re-entry interval (REI) 4

PPE required Long-sleeved shirt and long pants; Shoes plus socks. Follow manufacturer's instructions for cleaning and maintaining PPE.

Timing & weather

Shorten application interval during rainy weather or periods of high relative humidity. Repeat applications at 10-14 day intervals or as needed. Increase frequency to every 5-7 days during periods of weather favorable to fungal growth.

Use restrictions 1

Do not apply through any irrigation system. Do not apply directly to water or areas where surface water is present or to intertidal areas below the mean high water mark. Do not contaminate water when cleaning equipment or disposing of washwaters. Do not exceed 5 pounds per 100 gallons of water.