CompassPlant Protection Product ComparisonPlant Protection Product ComparisonReport inaccuraciesReport inaccuracies

A suspension concentrate containing 167 g/litre iprodione and 167 g/litre thiophanate-methyl.

A protectant and systemic fungicide for the control of diseases in winter and spring

oilseed rape and winter and spring field beans.

 

Compass is a protectant and systemic fungicide for the control of certain diseases in oilseed rape and field beans.

 

A maximum of two applications of any‚ ‘MBC‘ product (thiophanate-methyl) is allowed on any one crop.

Where possible use narrow-wheeled high clearance application equipment. To ensure optimum spray coverage and minimize spray drift, adjust the spray boom to the appropriate height above the crop, in according to guidance provided by the sprayer and/or nozzle manufacture.

For season long control Compass should be applied as part of a disease control programme

 

Compass is a protectant and systemic fungicide for the control of stem rot (Sclerotinia sclerotiorum), dark leaf spot and pod spot (Alternaria spp). and grey mould (Botrytis cinerea) in oilseed rape. Compass should not be used as the primary method of Botrytis control.

 

Compass contains iprodione, belonging to the dicarboximide group of fungicides, and thiophanatemethyl belonging to the benzimidazole (MBC) group of fungicides.

Currently there is no evidence of strains of Sclerotina sclerotiorum or Alternaria spp. that are resistant to either dicarboximides or MBCs in oilseed rape grown in the UK. However, MBC resistant strains of Sclerotina sclerotiorum have been recorded in France. Strains of Botrytis cinerea resistant to MBCs or dicarboximides have been reported in the UK and, where such strains occur, these fungicides may be ineffective.

There is no cross resistance between dicarboximides and benzimidazoles.

The key of resistance management strategies is the reduction of selection pressure. This can be achieved by good agricultural practice which leads to less infection pressure (e.g. crop & stubble hygiene, use of less susceptible varieties, crop rotation, use of healthy seeds, etc). Another tool is the use of fungicide mixtures. Compass contains two fungicide active substances with different modes of action. Both iprodione and thiophanate-methyl, are active against the main target pathogens Sclerotinia and Alternaria spp.

To minimise any possible risk of resistance occurring, the number of applications of Compass should be restricted to one per crop, used as an integral part of a spray program.

 

 

Disease:Stem rot: Sclerotinia sclerotiorum control

Rate: of 3.0 l/ha

Critical Comments:Apply Compass at 3.0 l/ha at first petal fall. This treatment will also control Botrytis and reduce early attacks of Alternaria.

 

 

 

Never prepare more spray solution than is required.

Fill the tank half full with water and start the agitation. To ensure thorough mixing of the product, invert the container several times before opening. Add the required quantity of Compass to the spray tank while re-circulating.Fill up the tank with water and continue agitation until spraying is completed.

On emptying the container, rinse container thoroughly by using an integrated pressure rinsing device or manually rinsing three times. Add washings to sprayer at time of filling and dispose of container safely.

Apply Compass in a minimum water volume of 200–600 l/ha as MEDIUM spray as defined by BCPC. Use a higher volume wherever the crop is dense.

Where possible use narrow-wheeled high clearance application equipment. To ensure optimum spray coverage and minimize spray drift, adjust the spray boom to the appropriate height above the crop, in according to guidance provided by the sprayer and/or nozzle manufacture.

Compass may be applied at 3.0 l/ha in 100 litres of water per hectare although efficacy at this reduced volume has not been evaluated. Application of this product at reduced-volume is at user’s risk with regard to biological efficacy.

 

For details of compatibilities contact your distributor, local BASF representative or the BASF Technical Services Hotline: 0044 845 602 2553.

 

Acknowledgements Compass is a registered trademark of BASF.