Chess WG

Manufacturer
SYNGENTA
Category
Insecticides
Registered until
N/A
Registration number
P5783
Active materials
Links

For the control of Aphids on Lettuce, Potatoes, Tamarillos, Tomatoes, Vegetable Brassicas and Green Peach Aphid on Peaches and Nectarines, and Whitefly on Tamarillos and Tomatoes.

GENERAL INFORMATION
CHESS WG is an insecticide with translaminar and systemic activity within the plant. Within hours of coming into direct contact or ingestion of CHESS WG Aphids and Whitefly cease to feed. Although they may still be present on the leaves a few days later, the Aphids and Whitefly are not causing any damage. CHESS WG is compatible with IPM programmes involving Phytoseiulus persimilis, Amblyseius fallacies and Encarsia spp and will not disrupt the activity of honey bees, although spraying should be avoided while bees are actively foraging.

RESISTANCE MANAGEMENT
CHESS WG belongs to a unique and new chemical class of insecticides with a novel mode of action. However, to minimise the risk of resistance, apply CHESS WG as recommended for the specific crop. If further control of the pest is required, use an insecticide with a different mode of action. The use of threshold monitoring and IPM programmes will allow optimum usage of the applications of CHESS WG. The removal of weeds from the crop and surrounding areas will assist in reducing the spread of plant viruses by aphids.

DIRECTIONS FOR USE
It is an offence to use this product on animals.

LETTUCES
Pest: Lettuce Aphids
Rate: 400g /ha
Critical comments: Apply as a broadcast spray in sufficient water to give complete coverage without runoff. This is assisted by the addition of a non- ionic wetting agent. Application to wet foliage will reduce effectiveness. Apply at first sign of insect presence especially before populations build up and before the head formation of certain lettuce varieties. Repeat if necessary 7 to 14 days later. The closer interval is recommended under high Aphid pressure. Apply no more than 3 applications per crop.

PEACHES, NECTARINES
Pest: Green Peach Aphid
Rate: 20 g/100 litres of water
Critical comments: Apply as a high volume to give complete coverage to the point of run-off. For concentrate spraying, adjust dilution rate accordingly. Complete spray coverage of the foliage is necessary and this will be assisted by the addition of a non-ionic wetting agent. Make a single application either at the first sign of Aphid presence or alternatively during crop development when an IPM threshold monitoring system indicates the Aphid threshold level is exceeded. For details on this monitoring system consult either Hort Research or the Stonefruit Processor.

POTATOES
Pest: Aphids
Rate: 200 g/ha
Critical comments: Apply as a broadcast spray in sufficient water to give complete coverage without run-off. The addition of a wetting agent will assist coverage. At the first sign of insect presence apply a single spray or a pair of sprays 7 to 14 days apart. The closer interval is recommended under high Aphid pressure.

TAMARILLOS
Pest: Aphids, Whitefly
Rate: 40 g/100 litres of water as a dilute spray
Critical comments: For high volume spraying apply CHESS WG as a dilute spray ensuring complete coverage without excessive runoff. For concentrate spraying adjust the dilution rate accordingly. Apply no more than two applications of CHESS WG at 7 to 14 day intervals at first sign of the pests. Alternation with other products is recommended. The use of other pest management tools such as the introduction of Encarsia spp is recommended.

TOMATOES (Field and Glasshouse)
Pest: Aphids
Rate: 200 g/ha

Pest: Whitefly
Rate: 200 to 400 g/ha or 40 g/100 litres of water as a dilute spray

Critical comments: Apply as a broadcast spray in sufficient water to give complete coverage without run-off. The addition of a wetting agent will assist coverage. At the first sign of insect presence apply a single spray or a pair of sprays 7 to 14 days apart. The closer interval is recommended under high Aphid or Whitefly pressure. Alternation with other products is recommended. The higher rate is recommended where Whitefly populations have established.

VEGETABLE BRASSICAS
Pest: Aphids
Rate: 200 g/ha
Critical comments: Apply as a broadcast spray in sufficient water to give complete coverage without run-off. The addition of a wetting agent at manufacturer's label rates is essential to assist coverage on the waxy leaf surfaces. Application to wet foliage will reduce effectiveness. At the first sign of insect presence apply a single spray or a pair of sprays 7 to 14 days apart. The closer interval is recommended under high Aphid pressure. Alternatively, CHESS WG can be applied under a reduced spray programme (IPM programme for brassicas) based on threshold monitoring. For further information on this system, contact Crop & Food Research.

COMPATIBILITY
CHESS WG is compatible with commonly used fungicides and insecticides of neutral reaction. DO NOT apply with spraying oils.

WITHHOLDING PERIODS
It is an offence for users of this product to cause residues exceeding the relevant MRL in the New Zealand (Maximum Residue Limits of Agricultural Compounds) Food Standards.
Lettuces.......................................................................... 7 days
Peaches, Nectarines .................................................... 28 days
Potatoes ......................................................................... 7 days
Tamarillos ..................................................................... 14 days
Tomatoes (field and glasshouse) .................................... 3 days
Vegetable Brassicas ....................................................... 7 days

STORAGE
Store in a cool, dry place avoiding temperatures below minus 10°C and above 35°C. When stored appropriately this product should show no significant degradation for 3 years from the date of manufacture.

Registered for culturesRatePreharvest Interval
Lettuce400 g7
Peaches0 l28
Nectarines0 l28
Potatoes200 g7
Tomatoes200 - 400 g3