COVID-19 Info: We would like to inform our customers and partners that we are making every effort to ensure the continuity of our services during this time. We applied contingency plans to our production facilities, and — to date — our production is running under strict safety measures to protect the health of our staff. We will keep our customers informed as the situation evolves.

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[grey mould]

Naturally fight against above ground-diseases (Botrytis and Didymella) and root or base rot diseases (Pythium, Phytophthora, Rhizoctonia and Fusarium).

Prestop® contains mycelia and spores of Gliocladium catenulatum strain J1446, a naturally occurring soil fungus, selected through Lallemand Research for its capacity to control a range of very important crop diseases.

The active fungus Gliocladium catenulatum strain J1446 operates through several useful modes of action:

  • hyperparasitism: production of enzymes which cause the breakdown of cell walls of plant pathogens.
  • competition: quick colonisation of root and aerial parts of the plant depriving pathogenic fungi of living space and nourishment. 


Prestop® can give effective control of a wide variety of plant pathogens:

  • Grey mould and stem canckers caused by Botrytis cinerea on leafy crops, tomatoes, peppers, cucumbers, aromatic plants, ornamentals, strawberries and other soft fruits.
  • Gummy stem light caused by Didymella sp. on cucumbers.
  • Damping-off and root or base rot diseases caused by Pythium, Phytophthora, Rhizoctonia and Fusarium on vegetables, salads, aromatic plants and ornamentals.

Composition: 2×108 CFU/g (320 g/kg of active ingredient) of spores and mycelium of Gliocladium catenulatum strain J1446. (CFU: Colony Forming Unit. Unit of measure for living microorganisms able to multiply).

Formulation: wettable powder

Organic culture: usable in organic production subject to certification body approval.

Harvest interval: none

Harmful residues: none

Storage: can be stored unopened for 12 months in a cool and dry place below +4°C. It is recommended that all of the contents of the package are used immediately once opened.

1 kg bag


The most efficient way to use Prestop® is preventatively. The active microorganism survives in the rhizosphere and on the aerial parts of plants for several weeks, protecting them against pathogens.

Dose rate and frequency

For other crop specific application recommendations: see brochure or crop section.

Compatibility: Prestop® is compatible with many chemical pesticides and can be used in Integrated Pest Management (IPM) programmes. Ask your distributor before mixing with plant protection products.

Preparation instructions: