BAYER - herbicide

A water dispersible granule formulation containing 30 g/kg mesosulfuron-methyl and 10 g/kg iodosulfuron-methyl-sodium.
A highly active herbicide (a combination of two sulfonylurea herbicides) with foliar and some root activity against bromes, black-grass, wild-oats, rye-grasses, annual meadow-grass, common chickweed, mayweeds, charlock and volunteer oilseed rape in winter wheat.

This information is approved as part of the Product Label. All instructions within this section must be read carefully in order to obtain safe and successful use of this product.

DO NOT use Pacifica on crops undersown with grasses, clover or other legumes or any
other broad-leaved crop.
The following “ALS inhibiting” herbicides can be applied to a crop treated previously with Pacifica: Eagle and Hussar.
Pacifica must not be applied to any crop suffering from stress as a result of drought, water-logging, pest or disease attack, nutrient deficiency, soil compaction or other factors reducing crop growth.
Because some non-target crops are sensitive to Pacifica, extreme care is required to avoid drift onto plants outside the target area, or onto ponds, waterways or ditches.
DO NOT apply Pacifica when rain is imminent.
DO NOT apply during periods of frosty weather.
Store in a safe dry place designated as an agrochemical store.

Sterile brome, Great brome
post-emergence to GS33.

Weeds:Rye brome
Rate: 0.5kg/ha
Susceptibility: Moderate susceptibility (MS) post-emergence to GS30.

Weeds: Black-grass, Wild oats
Rate: 0.5kg/ha
Susceptibility: Susceptible (S) post-emergence to GS39.

Weeds: Annual meadow-grass, Rough-stalked meadow-grass, Perennial rye grass (from seed), Italian rye-grass.
Rate: 0.5kg/ha
Susceptibility: Susceptible (S) post-emergence to GS31.

Weeds: Common chickweed, Mayweeds
Rate: 0.5kg/ha
Susceptibility: Susceptible (S) post-emergence to branching stage (10 cm diameter).

Weeds: Charlock, Volunteer oilseed rape
Rate: 0.5kg/ha
Susceptibility: Susceptible (S) post emergence to GS16.

Critical comments: Maximum number of applications 1. Latest time of application: from 1st February up to flag leaf ligule just visible GS 39.

Strains of some annual grasses (e.g. black-grass, wild-oats and Italian rye-grass) have developed resistance to herbicides which may lead to poor control. A strategy for preventing and managing resistance should be adopted. Guidelines have been produced by the Weed Resistance Action Group and copies are available from the HGCA, CPA, your distributor, crop advisor or product manufacturer.

Pacifica is readily translocated within the target weed, inhibiting growth within hours of application. The actual time taken for herbicidal symptoms to appear and death varies between weed species, timing of application and weather conditions. In some cases symptoms may not be apparent for up to 4 weeks. As Pacifica is active primarily via foliar uptake good spray coverage of the target weed is essential for optimal efficacy.
The presence of enhanced metabolism herbicide resistant populations of Italian rye-grass may lead to unacceptable levels of control. To reduce the risk of developing resistance or where resistance to sulfonylurea herbicides is suspected, applications should be made to young, actively growing weeds.

Winter Wheat
Apply via a tractor mounted horizontal boom sprayer at a rate of 0.5 kg/ha. Apply in 200-300 L/ha as a FINE to MEDIUM spray (BCPC category). Use application techniques which ensure good weed coverage and crop penetration, using flat fan nozzles. Ensure that spray swaths do not overlap.
Pacifica should be used in mixture with an authorised wetting agent e.g. biopower (PCS No. 92144).
Only one application of Pacifica should be made to the crop.
For use on all varieties of winter wheat. Safety to crops grown for seed has not been established. Apply post-emergence of the crop and no earlier than 1st February in the year of harvest up to flag leaf ligule just visible (GS39).

Winter wheat, winter barley and winter oilseed rape may be sown in the year of harvest to succeed a winter wheat crop treated with Pacifica. Spring wheat, spring barley, sugar beet, spring oilseed rape and peas may be drilled in the spring following harvest of the Pacifica treated winter wheat crop. In the event of crop failure for any reason, sow only winter or spring wheat in the same cropping season as an application of Pacifica.

Add the recommended quantity of Pacifica to the spray tank half-filled with the required quantity of clean water. Add the remainder of the water with the sprayer agitation system in operation. Maintain agitation during mixing and loading and until spraying is complete.
DO NOT leave the sprayer standing with chemical in it.
To avoid subsequent damage to crops other than winter wheat it is important that the
spray tank, boom, hoses, filters and nozzles are thoroughly washed out to remove all
traces of Pacifica immediately after spraying using a proprietary sprayer cleaner (e.g.
All Clear Extra®) according to the label instructions for that product.
DO NOT mix any bleach or chlorinating agent with any ammonia-based cleaning agent as toxic gases may be liberated.

Pacifica may be applied as a tank-mix with a range of products.
Contact Bayer CropScience for compatibility information on specific tank-mixes.
Full manufacturer’s instructions must be followed for each tank-mix component.


Winter wheat
16 - 39
Registred norm
0.5 - 0.5
Preharvest Interval