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Disease:Light leaf spot 

Rate:Apply 0.5 l/ha Pictor in a recommended water volume of 200 - 400 litres of water per hectare as a MEDIUM spray, as defined by the BCPC.

Critical Comments:Reduction

 

Pictor contains boscalid, which belongs to the SDHI (carboxamide) group of fungicides and dimoxystrobin, which belongs to the strobilurin QoI group of fungicides.

Currently, there is no evidence of impact on field performance on field strains of Sclerotinia, Alternaria, Pyrenopeziza or Phoma lingam that are resistant to SDHI or QoI fungicides in oilseed rape.

Currently there is evidence of cross resistance between boscalid and other fungicides in the SDHI group, but no cross resistance has been observed with fungicides with other modes of action.

The key to resistance management strategies is the reduction of selection pressure. This can be achieved by good agricultural practice which leads to less infection pressure (eg crop and stubble hygiene, use of less susceptible varieties, crop rotation, use of healthy seeds etc.).

Risk assessments for the target diseases on oilseed rape indicate a low or medium risk of resistance development. To minimize any possible risk of resistance occurring, the number of applications of Pictor should be restricted to two per crop. Pictor should be applied in a preventative manner, following the recommendations on the label, and as an integral part of a spray programme including fungicides with different modes of action.

For further advice on resistance management in oilseed rape contact your agronomist or specialist advisor, and visit the Fungicide Resistance Acion Committee (FRAC) and UK Fungicide Resistance Action Group (FRAG) websites.

 

Pictor can be used on all varieties of winter oilseed rape.

Apply Pictor as a protectant spray in the spring.

Applications against Phoma/stem canker and light leaf spot should be made in the spring at the first signs of infection. Optimum control of Phoma/stem canker and light leaf spot will be achieved where Pictor is applied in sequence with an approved fungicide having activity on these diseases in the Autumn/early spring.

Applications against Sclerotinia should be made in high disease risk situations at early to full flower (GS 63-65 BBCH), to coincide with or just before first petal fall, and before disease symptoms are visible. Applications made after the end of flowering (GS 69 BBCH) may result in reduced levels of Sclerotinia control.

Applications against Alternaria should be made from full flowering (GS 65 BBCH) up to and including when 50% of pods have reached final size (GS 75 BBCH). Applications made after the end of flowering may result in reduced levels of control.

Two applications can be made up to and including when 50% of pods are at final size (GS 75 BBCH).

 

 

Never prepare more spray solution than is required. Three quarters fill the tank with clean water and start the agitation. To ensure thorough mixing of the product, invert the container several times before opening. Add the required quantity of Pictor to the spray tank while re-circulating. Add the remainder of the water and continue agitation until spraying is complete.

When tank mixes are to be used, take due note of any instructions given as to the order of mixing. Each product should be added separately to the spray tank and fully dispersed before the addition of any further product(s).

Rinse empty containers thoroughly, using an integrated pressure rinsing device or by manually rinsing three times. Add washings to tank at time of filling and dispose of container safely.

Apply 0.5 l/ha Pictor in a recommended water volume of 200 - 400 litres of water per hectare as a MEDIUM spray, as defined by the BCPC. In dense crops, using the increased water volume will help achieve adequate penetration and good coverage of the 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, according to guidance provided by the sprayer and/or nozzle manufacture.

 

Any crop can follow normally harvested or failed crops treated with Pictor.

 

For details of compatibilities contact your distributor, local BASF representative or the BASF Technical Services Hotline: 0845 602 2553