tokuthion 500EC insecticide
PROTECT AGAINST SUCKING & CHEWING PESTS
500 g/L prothiofos [GROUP 1B INSECTICIDE]
Tokuthion is a unique insecticide with broad-spectrum activity against both sucking and chewing pests. It has a relatively low mammalian oral and dermal toxicity.
Tokuthion controls banana weevil borer in bananas, various caterpillar pests of crucifers and longtailed mealybug in pears.
BENEFITS OF USING TOKUTHION
- Market leading longtailed mealybug control
- Good knockdown effect
- IPM compatible in pear programs
- Low to medium mammalian toxicity
The pest must be contacted directly or ingest the spray residue on the treated shoot or plant parts on which it feeds shortly after application.
Thorough coverage is necessary to effectively target young emerging crawlers and to impact on adults sheltering under the bark, cracks and crevices, and at the base of shoots and stalks.
Coverage is key for mealybug control as Tokuthion works by contact and ingestion of the insecticide.
APPLYING TOKUTHION FOR EFFECTIVE MEALYBUG CONTROL
- Use high volume dilute air blast sprayers + larger air induction nozzles, hollow or solid cones that can achieve up to 4000L/ha.
- High volume sprays with dilute volumes of more than 4000L/ha may be required in some blocks to penetrate the bark, and the addition of a semi-dormant spray oil for pears is advised to aid in penetration under bark.
- Electro mister sprayer types with airshear nozzles are not advised as they produce fine driftable droplets and insufficient water volumes.
- Spray slowly to the point of run-off.
- Reduce fan speeds when spraying at the early stage of crop growth as good penetration under the bark scales is achieved by water volume, not airspeed.
- Target the tops and centres of large pear trees. Larger droplets that coalesce and run under the bark scales are required.
- Check coverage by getting off the sprayer and seeing how much coverage is achieved in places the mealybugs are hiding.
SAFETY TO BENEFICIALS
Mealybug numbers are generally held in check by a range of natural predator insects, such as green and brown lacewings, ladybirds and predatory wasps.
If these beneficials are affected by spraying with any product that disrupts their activity, then mealybug numbers tend to increase.
Using insecticides such as Tokuthion that are soft on beneficial insects is critical, and adopting Integrated Pest Management (IPM) practices reduces severity of mealybug problems.
Tokuthion has a relatively good safety margin on beneficial insects such as wasps and predatory lady beetles, and can be used as part of an IPM program using Typhlodromus occidentalis but not Typhlodromus pyri.
Tokuthion is toxic to bees actively foraging and application should be avoided during the flowering period in pears.