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Carb-O-Nator® Contact Foliar Fungicide

Carb-O-Nator is a contact fungicide that controls foliar diseases on a wide variety of crops and ornamentals. Its unique multi-site activity provides quick control of fungal pathogens.

With its active ingredient, potassium bicarbonate, Carb-O-Nator is well-known for proven efficacy against plant disease coupled with a high level of safety to workers, bees, wildlife and the environment. Carb-O-Nator is an ideal selection for use in disease resistance management programs. It has a reentry interval (REI) of four hours, a zero-day pre-harvest interval and is residue exempt, making it a highly flexible fungicide to use. It is OMRI listed and NOP compliant.

Diseases controlled by Carb-O-Nator include:

  • Powdery mildew
  • Alternaria
  • Anthracnose
  • Botrytis
  • Septoria leaf spot
  • Apple scab
  • Cedar apple rust
  • Phomopaia blight/fruit rot
  • Ovulinia sp.

Carb-O-Nator can be used on a wide variety of crops, including:

  • Grapes
  • Tomatoes
  • Apples
  • Cherries
  • Strawberries
  • Berries
  • Peppers

For more information, please consult the product label.

Carb-O-Nator Mode of Action

Carb-O-Nator deploys a multi-site mode of action, acting through a combination of osmotic pressure, pH and specific ion effects. It acts very rapidly to cause dehydration and total collapse of spores and the mycelium of susceptible fungi.

Carb-O-Nator Applications

Time application of Carb-O-Nator at the first sign of disease.

Mix at a rate of 2.5 to 5.0 lbs./A in 100 gallons of water. Apply mixed spray solution to thoroughly wet stems and foliage of plants. Apply a minimum of 20 gallons of mixed spray solution per acre.

Concentration of spray solution and frequency of application will depend upon disease pressure. Repeat application at 10 to 14 day intervals or as needed.

Always read and carefully follow label instructions. Note that California registered uses are listed in a separate section of the product label.


Organic Crops

NOP Approved:

This product is approved for organic production by the National Organic Program (NOP), a marketing program housed within the United States Department of Agriculture (USDA) Agricultural Marketing Service, the agency that sets marketing standards. The NOP mission is to develop and implement national standards that govern the marketing of agricultural products as organically produced, to facilitate commerce in fresh and processed food that is organically produced, and to assure consumers that such products meet consistent standards.

OMRI Listed®:

This product is OMRI Listed, therefore it is determined by the Organic Materials Review Institute (OMRI) to be suitable for use in certified organic production.

OMRI Certificate Printer friendly PDF format