- Registered until
- Registration number
- Active materials
- pymetrozine500 g/kg
For control of Aphids and suppression of Whiteflies in certain vegetable crops, Cotton, Cut Flowers, Nursery stock (non-food), Stonefruit, Almonds and Pistachios as per the Direction for Use.
Mode of Action
CHESS has an anti-feeding effect and is not a knockdown. Users should not expect to see an immediate significant reduction in aphid or whitefly numbers. Although whiteflies and aphids may remain alive for a short time after application of CHESS, further damage to the plant is prevented as feeding is inhibited. Best results are achieved when CHESS is applied when whitefly and aphid populations reach local thresholds and before the target populations reach high levels.
Crop Checking – Cotton
Different methods of scouting will produce different results. The effect of CHESS on aphid populations is best demonstrated by recording the percentage reduction in aphid numbers before and after application, as opposed to recording a decline in the percentage of plants infested. The most reliable scouting method is to visually examine 20 to 30 leaves between the 3rd and 5th highest node of the cotton plant and to estimate or count the number of non-winged aphids present. Scouting for aphids should be made over a random sample of plants, representative of the whole crop area.
Add the required amount of CHESS to clean water in a half filled spray tank with the agitator or by-pass in operation. Maintain agitation while filling tank with remainder of water. If a wetter is required, add at completion of filling the tank. Agitation must also be maintained throughout the spray operation.
To be effective CHESS requires thorough spray coverage. Ensure that equipment is properly calibrated to give an even distribution at the correct volume delivering a MEDIUM spray quality.
Cotton and Sweetcorn:
Ground Application: Apply in a sufficient volume of water to ensure thorough coverage
Aerial Application: Apply in a minimum of 30 L water/ha.
Vegetable crops (including brassicas, beetroot, celery, leafy vegetables, tomatoes, capsicums, eggplants, lettuce, endive, radicchio, chicory, cucurbits, and potatoes: Apply via ground rig or knapsack sprayer only in a sufficient volume of water to ensure thorough coverage
Stone fruit, almonds and pistachios, cut flowers and Nursery stock (non-food), seedling & plugs, potted colour, trees and shrubs, foliage plants, palms, grasses & fruit trees (non-bearing): The same quantity of CHESS per hectare should be applied whether spraying either the dilute or concentrate method.
Dilute Spraying: Use a sprayer designed to apply high volumes of water up to the point of runoff and matched to the crop being sprayed. Set up and operate the sprayer to achieve even coverage throughout the crop canopy. Apply sufficient water to cover the crop to the point of runoff. Avoid excessive runoff. The required water volume may be determined by applying different test volumes, using different settings on the sprayer, from industry guidelines or expert advice.
Add the amount of CHESS specified in the Directions for Use table for each 100 L of water. Spray to the point of runoff. If water volumes exceed 2000 L/ha, total rate of CHESS must not exceed 400 g/ha. The required dilute spray volume will change and the sprayer set up and operation may also need to be changed, as the crop grows.
Concentrate Spraying: Use a sprayer designed and set up for concentrate spraying (that is a sprayer which applies water volumes less than those required to reach the point of runoff) and matched to the crop being sprayed. Apply a minimum of 500 L water/ha. Set up and operate the sprayer to achieve even coverage throughout the crop canopy using your chosen water volume. Determine an appropriate dilute spray volume (see Dilute Spraying) for the crop canopy. This is needed to calculate the concentrate mixing rate. The mixing rate for concentrate spraying can then be calculated in the following way:
1. Dilute spray volume as determined above: for example 2000 L/ha
2. Your chosen concentrate spray volume: for example 500 L/ha
3. The concentrate factor in this example is 4X (ie 2000 L 500 L = 4)
4. If the dilute label rate is 20 g/100 L, then the concentrate rate becomes 4 x 20, that is 80 g/100 L of concentrate spray.
The chosen spray volume, amount of product per 100 L of water, and the sprayer set up and operation may need to be changed as the crop grows. For further information on concentrate spraying, users are advised to consult relevant industry guidelines, undertake appropriate competency training and follow industry Best Practices.
CHESS is physically compatible with AFFIRM®, VERTIMEC® and KARATE® ZEON®. As formulations of other manufacturers’ products are beyond the control of Syngenta Australia Pty Ltd, and water quality varies with location, all mixtures should be tested prior to mixing commercial quantities.
Insecticide Resistance Warning
For insecticide resistance management, CHESS Insecticide is a Group 9B insecticide. Some naturally occurring insect biotypes resistant to CHESS and other Group 9B insecticides may exist through normal genetic variability in any insect population. The resistant individuals can eventually dominate the insect population if CHESS and other Group 9B insecticides are used repeatedly. The effectiveness of CHESS on resistant individuals could be significantly reduced. Since occurrence of resistant individuals is difficult to detect prior to use, Syngenta Australia Pty Ltd Crop Protection accepts no liability for any losses that may result from failure of CHESS to control resistant insects.
CHESS may be subject to specific resistance management strategies. For further information contact your supplier, Syngenta representative or local agricultural department agronomist.
|Registered for cultures||Rate||Preharvest Interval|
|Brussels sprouts||200 g||7|
|Sweet peppers||200 g||3|
|Sweet corn||200 g||14|
|White mustard||200 g||3|
|Chinese cabbage||200 g||3|
|Red beet||200 g||14|