Preparation
- Remove the sachets from the box and keep them at room temperature for 30 minutes
- Empty the contents of the sachets into a bucket containing at least 2 litres of water per sachet (water temperature: 15-20°C/59-68°F)
- Stir well and leave the contents to soak for five minutes
- Stir again and pour the contents of the bucket into the half-filled spray tank (except when tank mixing with a compatible product)
- Maintain agitation of mixture in the tank (e.g. with a recirculation pump)
- Fill the spray tank with the required amount of water
- If tank mixing with a compatible product, add Casea at the end to a fully filled tank
- Apply directly after preparation of spray solution
Application
- Nematodes can be applied using an airblast sprayer, a vehicle-mounted spray unit, a backpack sprayer or through a sprinkler system
- To avoid blockage, all filters should be removed, especially if finer than 0.3 mm (50 mesh)
- Use a maximum pressure of 20 bar/290 psi (on nozzle)
- The spray nozzle opening should be at least 0.5 mm (500 microns – 35 mesh) - preferably high flow rate cone nozzle types
- Continuous mixing should take place to prevent nematodes sinking to the bottom of the spray tank
- Avoid sprayers equipped with centrifugal or piston pumps
- Water tank temperature must not exceed 25°C/77°F and pH must be between 4 and 8
- Distribute the spraying solution evenly over the soil/medium surface
Application through irrigation systems:
- Pressure-compensated irrigation systems are recommended. If not available, spray or drench applications are recommended. For injection through Dosatron/Venturi systems, please contact your local Koppert representative for specific advice
- Spray the solution as soon as it is prepared and within a short timeframe. Do not store mixed suspensions
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Dosage
Casea is typically applied against foliar pests at a rate of 1 to 3 million nematodes per liter of spray solution (average 1.5 billion /ha or 0.6 billion/acre) and against soil pests at a rate of 500 million to 3 billion per ha (200 million to 1.2 billion per acre).
Timing
Timing and frequency depend on the pest species and the crop environment (relative humidity, soil moisture and temperature). Consult a Koppert advisor or a recognized distributor of Koppert products for advice on the best strategy for your situation.
Environmental conditions
- Steinernema carpocapsae is active between 14-34°C/57-93°F but performs best at temperatures between 19-31°C/66-88°F
- Soil or air temperature below 5°C/41°F and above 35°C/95°F can be lethal
- Nematodes are susceptible to ultraviolet light (UV): do not use them in direct sunlight
- The moisture content of the soil must be kept high for several days after application. When possible, irrigate the crop before and right after application
- Adding an adjuvant and/or an anti-desiccant/humectant can be beneficial. Ask your Koppert representative/distributor for more information
- Spray in the evening (or morning in some cases) allowing nematodes to work for several hours within the optimal range of temperature and humidity, as described above
Side Effects & Compatibility
- Pesticides can have (in)direct effects on biological solutions
- As a general rule for tank mixing, always add the nematodes to a fully filled tank containing the compatible product
- The product is safe for most beneficial insects and mites, but can have some effect on a few when in direct contact with foliar applied nematodes
Check the Koppert side effects database or contact your local representative for advice.
Storage time after receipt
See expiry date on the box. On average product can be stored for 2-3 months.
Storage temperature
Refrigerate at a temperature of 2-6°C/35-43°F in a ventilated refrigerator/cold room.
Storage conditions
Upon receipt, take boxes out of the insulating shipment packaging. Keep in a dark, ventilated refrigerator/cold room until use.
