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(Ampelomyces quisqualis)

What is Bio-Dewcon?

Bio-Dewcon, is a biological fungicide containing the conidial spores and the mycelial fragments of a selected strain of antagonistic fungus, Ampelomyces quisqualis. The product is available both in liquid (1 x 109 per ml) and powder (2 x 106 per gm) formulation.

Mode of Action

Substrate Competition: It controls pathogens through creating competition for substrate and nutrients. It colonizes maximum space and absorbs maximum nutrients available at the target site and thereby controls the pathogens by making them to starve for enough space and food.

Mycoparasitism: It is a preventive biological (living) fungicide that attacks disease-causing pathogens before they reach the root system. It grows fast and coils around the pathogen and penetrates through it. By taking nutrients from the pathogen it makes the pathogen to die finally.

Antibiosis: Offers long-lasting control of pathogen by secreting secondary metabolites which exhibit antibiosis effects on the pathogen.

Method of Application

Foliar Spray: Bio-Dewcon should be applied to plants as a prophylactic before the disease is observed. Apply in sufficient water to ensure uniform and thorough coverage for the most effective disease control.

Frequency of Application: 2-3 applications are recommended however, the frequency of applications also depends on the degree of infestation. In the case of high infestation, multiple applications are recommended.

Preparation of Spray Solution

Suspend Bio-Dewcon @ 3 Litre or 4 kg / 500 Litres of water. Stir well and apply through low pressure watering nozzles such as fan nozzles or sprinklers after carefully filtering.


Bio-Dewcon is compatible with Mancozeb 75% WP (@ 0.25gm/Litre level), Carbendazim 50.0% WP (@ 0.10 gm / Litre level) and Copper-oxy chloride 88.0% w/w (@ 0.25 gm/Litre level). It can be tank mixed and applied together with insecticides and fungicides.



  • Dosage      : Liquid: 3 Litres/ha Powder: 4 kg/ha
  • HS Code    : 3808 9030
  • Shelf life  : Liquid Two years,Powder: One year
  • Packing    : Liquid: 1 Litre, 5 Litres, Powder: 1 kg, 5 kg