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Prestop is a biofungicide for moderate control of gummy stem blight (Didymella sp.), grey mould (Botrytis sp.), damping-off and root diseases caused by Pythium, Phytophthora, Rhizoctonia and Fusarium spp. on all edible crops and all non-edible crops (protected) and outdoor strawberry. It can be applied via drip irrigation, as growing media incorporation, as a drench treatment or as a foliar spray treatment.
This product is a biofungicide: a 32% w/w wettable powder containing a nominal 2 x 108 cfu/g product of the microorganism, Gliocladium catenulatum strain J1446.

DIRECTIONS FOR USE
IMPORTANT: This information is approved as part of the product label. All instructions within this section must be read carefully in order to obtain safe and successful use of this product.
Prestop is a biofungicide: a 32% w/w wettable powder containing a nominal 2 x 108 cfu/g product of the microorganism, Gliocladium catenulatum strain J1446, a selected strain of a naturally occurring soil fungus. Prestop is not genetically manipulated.

Restrictions and warnings
- Not to be used on unrooted cuttings.
- Micro-organisms may have the potential to provoke sensitising reactions.

Disease control
Prestop has multiple modes of action against gummy stem blight (Didymella sp.) on cucumber, grey mould (Botrytis sp.) and damping-off and root diseases caused by Pythium, Phytophthora, Rhizoctonia and Fusarium spp. on all edible crops and all non-edible crops (protected) and outdoor strawberry.
The Gliocladium sp. fungus deprives plant pathogenic fungi of living space and nourishment by colonizing plant roots or foliage in advance of the pathogens.
The Gliocladium sp. fungus acts as a hyperparasite on harmful fungi by producing enzymes, which break down the cell walls of the pathogenic fungi.

Crop recommendations
Prestop is for use on all edible crops and all non-edible crops (protected) and outdoor strawberry.

Methods of application
Tractor mounted/trailed sprayer, knapsack, drip irrigation, incorporation into growing media or drench treatment.

Best conditions for product
Prestop should be used preventatively, so that the Gliocladium sp. fungus has enough time to colonize plant roots or foliage prior to the pathogens.

CROP SPECIFIC INFORMATION
FOLIAR APPLICATIONS:
Prestop gives moderate control of gummy stem blight (Didymella sp.) on cucumber, and grey mould (Botrytis sp.) on all edible crops and all non-edible crops (protected) e.g. tomato, pepper, cucumber, ornamentals and on outdoor strawberry.
Apply as a high volume foliar spray to ensure thorough coverage of the foliage, paying particular attention to stems when applying for Didymella sp. and wounds when applying for Botrytis sp.

Timing:
Tomato, pepper and cucumber: apply the first treatment soon after transplanting or at the latest immediately after de-leafing and reapply every 3- 4 weeks.
Ornamentals and production of all edible crops and all non-edible crops (protected): treat cuttings at striking and seedlings at emergence, repeat at 3 to 4 week intervals.
Strawberry: one to three applications as foliar spray at 0.5% or 0.6 g/m2 (equivalent to 6.0 kg product/ha) with a seven day spray interval, at growth stages before the end of flowering (BBCH 69).

Mixing and Spraying:
Apply at the rate of 500 g per 100 litres (0.5%). First cream the Prestop powder with a small amount of water (e.g. 1 litre), then agitate carefully until evenly mixed after which dilute to the final concentration. Apply at high volume. As a guide for tomato, pepper and cucumber use 10 litres of Prestop suspension per 500 plants, and for strawberries use 1,200 litres of the suspension per hectare at one application. Apply at high volume to just before run-off, ensuring through coverage of the crop.

GROWING MEDIA APPLICATIONS:
For the moderate control of damping-off and root diseases caused by Pythium, Phytophthora, Rhizoctonia and Fusarium spp. on all edible crops and all non-edible crops (protected) and outdoor strawberry.

Growing media incorporation
Timing:
Prestop should be used preventatively. Treat growing media at sowing, transplanting and/or planting stage.

Mixing and Application:
When incorporating Prestop into the growing medium use 200-500 g of Prestop per 1,000 litres of the medium. Mix the powder first with water in order to make sure of a uniform distribution of the product into the medium.
Always adjust the volume of water according to the moisture content of the growing media. Use the higher rate of Prestop in the case of a risk for high disease pressure or big root volume. The lower rate is used when mild disease infection is expected, or for small root volume.

Drench Application
Prestop may be applied by drenching or through drip irrigation.

Timing:
Prestop should be used preventatively. Repeat the treatment at the intervals of 4 to 6 weeks. Use the shorter interval under conditions of moderate to high disease pressure.

Mixing and Application:
Prestop must always be used as an aqueous suspension. First cream the Prestop powder with a small amount of water (e.g. 1 litre), then agitate carefully until evenly mixed after which dilute to the final concentration.
Drench treatments may be applied via drip irrigation systems through a mixing tank or via a separate injection pump.
Drench of e.g. cucumber, tomato, pepper, ornamentals and outdoor strawberry: apply 200 g to 250 g of Prestop (0.5%) per 1,000 plants.
Drenching of small seedlings: use 5 - 10 g of Prestop / m2 in 1 – 2 litres of water / m2 (0.5%).
Drench of individual root balls and pot plants: Apply 20 - 500 g of Prestop (0.5%) per 1,000 plants, depending on the size (100 ml – 1 l) of the root ball/pot.

Compatibility
Prestop is a biological fungicide and may be affected by residues of or subsequent applications of other pesticide products. Consult the manufacturer or distributor regarding compatibility of other chemical or microbial products within a pest or disease control programme.
Do not tank-mix Prestop with any chemical pesticides or concentrated fertilizer solutions.
Prestop does not harm beneficial insects and can be used in integrated pest and disease control systems.
Prestop has been used on a wide range of crops under a range of conditions and no phytotoxicity has been observed

Resistance
Prestop has not been reported to have any disease resistance. However, it is good practice to use such products as components of Integrated Pest Management systems, alternating with other control measures. This is particularly important for sequential crops.

Storage
Prestop is a biological preparation containing dried living fungal spores and mycelium. Prestop will keep unopened for one year if stored in cool, dry conditions below +8ºC. Since Prestop powder is hygroscopic, it is recommended to use the whole contents of the package immediately once opened to prevent caking of the product. Alternatively, the opened package can be closed tightly and put in the freezer until the rest of the powder will be used.