Stroby WGPlant Protection Product ComparisonPlant Protection Product ComparisonReport inaccuraciesReport inaccuracies

 

 All instructions within this section must be read carefully in order to obtain safe and effective use of the product. Stroby WG is a strobilurin (QoI) fungicide with excellent protectant activity for control of leaf and fruit scab in apples leading to an increase in the production of quality fruits. When Stroby WG is used for control of apple scab a reduction of apple powdery mildew may also be obtained. Stroby WG also gives protectant activity for control of powdery mildew in strawberries and blackcurrants and mildew and blackspot on roses. 1. Restrictions/Warnings Stroby WG has not been tested on all rose varieties and it is therefore advisable to test a small area of plants first for sensitivity under the given growing conditions. Integrated pest management: The suitability for use of Stroby WG in integrated pest management (IPM) systems has not been fully assessed, although studies have demonstrated safety to the predatory mite T. pyri and to the ladybird C. septempunctata. Safety to bees. Stroby WG is harmless to honey bees and may be applied during flowering. Consideration should however be given to informing local bee keepers when intending to spray orchards in flower. Use a minimum water volume of 200 litres per hectare in tank mix. Professional Use Only.

 

Stroby WG contains kresoxim-methyl, a strobilurin (QoI) fungicide. QoI fungicides should be used preventatively. In order to minimise the risk of resistance, Stroby WG should be used in a programme with products of different chemical groups, in sequence and/or tank-mix.

Use a maximum of four applications of QoI fungicides per year. Where the total number of annual fungicidal treatments to the crops is less than twelve, use a maximum of three QoI products per year.

When used for the control of apple scab, Stroby WG must be applied in mixture with a tank-mix partner that has efficacy against the target pathogen and is from a different cross resistance group.

Do not use more than two consecutive applications of QoI fungicides.

Do not use Stroby WG as the final spray in the season.

Do not use consecutive applications of Stroby WG and alternate with fungicides from a different cross-resistance group. Do not apply more than two applications of Stroby WG per year. Use a maximum of one QoI spray out of three fungicide applications.

Do not use consecutive applications of Stroby WG, and alternate with fungicides from different cross-resistance group. Do not apply more than three applications of Stroby WG per year. Use a maximum of one QoI spray out of three fungicide applications. For further advice on resistance management consult your agronomist or specialist adviser and/or visit the FRAC website. 

 

Apply as a FINE spray as defined by BCPC.

For optimum results apply Stroby WG from bud burst prior to disease development and repeat at 10-14 day intervals. Use a maximum of four applications per year. Where disease pressure is high, use the shorter spray interval for optimum disease control.

Stroby WG must be used in mixture with a fungicide that has efficacy against the target disease.

Apply 0.2 kg Stroby WG per hectare, ensuring good coverage of the trees in the water volumes given below.

Apply Stroby WG in 150 to 1500 litres water per hectare.

The following minimum interval must be observed between the final application and harvest: Apples - 28 days Apple for cider and perry production – 35 days

Apply as a MEDIUM spray, as defined by BCPC.

For optimum results apply Stroby WG as a protectant spray to new growth and repeat at 7 to 14 day intervals. Where disease pressure is high, use the shorter spray interval. Do not apply more than two applications per year.

Apply 0.3 kg Stroby WG in 450 to 1000 litres water per hectare, ensuring good coverage of foliage.

The following minimum interval must be observed between the final application and harvest: Outdoor strawberries - 7 days Protected strawberries - 3 days.

Apply as a FINE or MEDIUM spray, as defined by BCPC, ensuring adequate coverage of foliage.

Apply Stroby WG at the start of extension growth and repeat at 10 to 14 day intervals. Use a maximum of three applications per year.

Apply 0.2 kg Stroby WG in 500 to 1600 litres of water. Use a sufficient water volume to achieve good coverage of the bushes without causing run-off.

The following minimum interval must be observed between the final application and harvest: 14 days

 

 

Apply at the start of infestation, or when the first symptoms become visible, and repeat at 7 to 14 day intervals. Use a maximum of three applications per year.

Apply Stroby WG as a 0.03% concentration, based on 1000 litres water per hectare (0.3 kg/ ha).

Water volumes should be based on the size of plants at application and local conditions ensuring good coverage of foliage. Do not exceed a total volume of 1000 litres per hectare.

Stroby WG has not been tested on all rose varieties and it is therefore advisable to test a small area of plants first for sensitivity under the given growing conditions.

 

The suitability for use of Stroby WG in integrated pest management (IPM) systems has not been fully assessed, although studies have demonstrated safety to the predatory mite T. pyri and to the ladybird C. septempunctata.

 

Stroby WG is harmless to honey bees and may be applied during flowering. Consideration should however be given to informing local bee keepers when intending to spray orchards in flower.

 

Never prepare more spray solution than required. Remove the top filter. Three quarters fill the spray tank with clean water and start the agitation.

 

Loading directly into spray tank: Slowly add the required amount of product. Add the remainder of the water. Replace the top filter and continue agitation until spraying is completed. Loading by induction hopper: Ensure the hopper is suitable for handling water dispersible granules. Set to give maximum suction and slowly pour the Stroby WG into the outlet, adding the correct amount of product for the area to be treated. Ensure the sides of the hopper are being rinsed with water as the product is poured into the hopper, avoiding a build up of product. Once the correct amount of Stroby WG has been added, (ensuring the hopper is clean) add the remainder of the water and replace the top filter. Continue agitation until spraying is completed.

When tank mixes are to be used, each product should be added separately to the spray tank taking due note of any instructions given as to the order of mixing. Use a minimum of 200 litres water per hectare when used in tank mix.

All tank mixes should be used immediately after mixing.

In apples apply as a FINE spray as defined by BCPC. In strawberries, apply as a MEDIUM spray, as defined by BCPC. In blackcurrants, apply as a FINE or MEDIUM spray, as defined by BCPC, ensuring adequate coverage of foliage. In roses, water volumes should be based on size of plants at application and local conditions ensuring good coverage of foliage. Do not exceed a total volume of 1000 litres per hectare.

Wash equipment thoroughly after use.

 

For details of compatibilities contact your distributor, local BASF representative, the BASF Technical Services Hotline: 0845 602 2553 or visit our website on: www.agricentre.basf.co.uk

 

Stroby WG is a trademark of BASF.