Steward

Formulation

A water dispersible granule containing 300 g/kg indoxacarb.

Directions for use

Crops/dose/application and timing

Steward may be applied to the following crops:

Oilseed rape

Pests controlled: Steward offers control of Pollen Beetle (Meligethes spp.) including pyrethroid resistant forms. Steward stops pollen beetle feeding very quickly but the pollen beetles may take several days to die.

Dose: 85g/ha in 200l/ha using boom sprayer.

Timing: Apply when pollen beetles are present and reaching threshold levels. For effective control of pollen beetle, sprays should be applied at the green bud stage. Application may be made before GS60, first flowers open stage. The use of Steward offers 7-10 days persistence against pollen beetles. DuPont trials have shown that a rate of 62.5g/ha of Steward gives control of pollen beetle at least as good as competitor standards e.g neonicotinoids.

For persistent control of higher populations, DuPont would recommend 85g/ha of Steward (equivalent to approx. 3ha pack).

For lower populations or where 10 days persistence is not required, 62.5g/ha of Steward would be appropriate (equivalent to 4ha pack).

Cabbage, cauliflower and broccoli

Pests controlled: Cabbage whites (Pieris spp.), Cabbage moth (Mamestra brassicae),

Garden pebble moth (Evergestis forficalis), Cabbage leafroller (Clepsis

spectrana) and Diamondback moth (Plutella xylostella).

Dose: 85 g/ha in 200 l/ha using boom sprayer.

Timing: Treat when first caterpillars are detected or 7-10 days after trapping of the first adults in pheromone traps. Subsequent treatments may be applied at 8-14 day intervals as required.

Protected cucumber (gherkin), courgette (zucchini), marrow, winter squash, pumpkin, melon, aubergine, tomato and pepper

Pests controlled: Golden twin-spot moth (Chrysodeixis chalcites), Beet armyworm (Spodoptera exigua), Cabbage moth (Mamestra brassicae), Tomato moth (Lacanobia oleracea), Silver y-moth (Autographa gamma) and other Plusia species and leafrollers.

Dose: 0.0125% w/v (12.5 g/100 litres of water).

Timing: Treat as soon as the first caterpillars (damage) are detected. Subsequent treatments may be applied at 8-14 day intervals as required.

Note: Since there is only limited experience with this use, a test spraying should be performed, to determine if the corresponding plant and/or variety tolerates the application.

Apples and pears

Pests controlled: Steward will provide moderate control of Marbled orchard tortrix (Hedya nubiferana), Large fruit tree tortrix (Archips podana), Rose tortrix (Archips rosana), Straw-coloured tortrix (Clepsis spectrana), Dark fruit tree tortrix (Pandemis heparana), Bud moth (Spilonota ocellana), Summer fruit tortrix (Adoxyphyes orana), Codling moth (Cydia pomonella), Winter moth (Operopthtera brumata) and Orthosia

Dose: A rate of 250 g/ha should be used for trees of 3.75m height in a single row system, 3.25 m height in a 2 or 3 row system and 2.25m in a 5 row system. Where tree height and/or canopy density is reduced, the dose (and water volume) should be adjusted in accordance with an appropriate dose adjustment scheme, for example PACE. However, if reducing the dose according to tree height or canopy density, do not use less than 170g/ha. Consult your specialist advisor for further information. Further information on the PACE scheme is available from HDC, or see the HDC fact sheet available from PSD’s website (www.pesticides.gov.uk/HDC.pdf)

Timing: Apply at egg-hatch. Subsequent treatments may be applied at 10-14 day

Limit to number of applications

Steward can only be applied once to a crop of oilseed rape.

A maximum of 3 applications per year may be made to apples or pears.

A maximum of 6 applications per year may be made to approved protected vegetables and ornamentals.

A maximum of 3 applications per crop may be made to cabbage, cauliflower and broccoli.

Crop safety

Steward is safe to use on all recommended crops if used as directed.

Honey bees

In accordance with good agricultural practice, avoid spraying when bees are actively foraging i.e. during the heat of the day.

Resistance management

When insecticides with the same mode of action are used repeatedly over several years to control the same species in the same field, naturally-occurring resistant strains may survive a correctly applied treatment, propagate, and become dominant in that field. An insect can be resistant if the product applied under recommended conditions does not work well. Some insects (e.g. Cydia pomonella) have developed resistance to commercially available products. When resistance occurs, recommended rates fail to suppress the pest population below economic thresholds.

It is important that the grower considers the following:

Alternate the use of Steward with products with a different mode of action than indoxacarb.

Monitor insect populations and apply Steward when locally determined economic thresholds are reached. More than one application may be necessary for any infestation.

Follow the directions for use as mentioned on the label, regarding dose, interval and optimum application timing.

Recommended Crops

Oilseed Rape, cabbage, cauliflower, broccoli, apples, pears and various protected fruiting vegetables.

Target pest

Control of larvae of various Lepidopteran (caterpillar) species and pollen beetle.

Use rate

Oilseed Rape: 62.5-85 g/ha ddepending on pest pressure
Cabbage, cauliflower, broccoli: 85 g/ha
Protected cucumber, courgette, marrow, winter squash, pumpkin, melon, aubergine, tomato, pepper: 12.5 g/100l of water
Apples, pears: 250 g/ha

Water volume and spray quality

Oilseed Rape - 200 litres of waterper hectare
Cabbage, cauliflower, broccoli - 200 litres of water per hectare
Protected cucumber, courgette, marrow, winter squash, pumpkin, melon, aubergine, tomato and pepper - 100 litres of water per hectare
Apples, pears - this should be adjusted according to tree height/canopy density

When applying to protected crops, the maximum spray concentration must not exceed 12.5g product/100 litres of water

LERAP Information

Category B for broadcast air-assisted sprayers.

Minimum interval between sprays

Cabbage, cauliflower, broccoli - 8-14 day intervals
Protected cucumber, courgette, marrow, winter squash, pumpkin, melon, aubergine, tomato and pepper - 8-14 day intervals
Apples/pears - 10-14 day intervals

Limit to number of applications

Oilseed Rape - 1 application per crop
Cabbage, cauliflower, broccoli: 3 applications per crop
Protected cucumber, courgette, marrow, winter squash, pumpkin, melon, aubergine, tomato, pepper: 6 applications per year
Apples, pears: 3 applications per year

Harvest interval

Oilseed Rape: latest time of application - before first flowers open stage (GS60)
Cabbage, cauliflower, broccoli: 1 day before harvest
Protected cucumber, courgette, marrow, winter squash, pumpkin, melon, aubergine, tomato, pepper: 1 day before harvest
Apples, pears: 7 days before harvest

Pack

250g, 10 per outer

Registered for cultures	Rate	BBCH	Preharvest Interval
Winter rape	85 g	60
Apples	250 g	0	7
Pears	250 g	0	7
Cucumbers	0 g	0	1
Zucchini	0 g	0	1
Squash	0 g	0	1
Pumpkins	0 g	0	1
Melons	0 g	0	1
Eggplant	0 g	0	1
Tomatoes	0 g	0	1
Peppers	0 g	0	1
Spring rape	85 g	60
Broccoli	85 g	0	1
Cauliflower	85 g	0	1
Cabbage	85 g	0	1

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