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FORMULATION AND ACTIVE INGREDIENT: A residual herbicide for the control of a range of broadleaved and grass weeds, including cleavers, in winter and spring oilseed rape. A suspension concentrate containing 125 g/L (10.8% w/w) quinmerac and 375 g/L (32.3% w/w) metazachlor.
 
DIRECTIONS FOR USE
IMPORTANT: 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.
PARSAN EXTRA is a residual herbicide that can be used on all varieties of winter and spring sown oilseed rape for the control of cleavers and a range of other broad-leaved and grass weeds.
 
Restrictions/Warnings
PARSAN EXTRA is suitable for use on all soil types as defined by Soil Texture (85) System, except sands and very light soils and soils containing more than 10% organic matter.
Seedbeds should be moist, firm and free from clods. Loose or puffy seedbeds must be consolidated before treatment.
When PARSAN EXTRA is applied pre-emergence, it is important for crop safety to ensure physical separation of the herbicide from the seed. This is achieved by ensuring that the seed is well covered with soil to a depth of 15mm.
With direct drilled crops, harrow across the slits to cover the seed before spraying.
Do not use on broadcast crops until the crop has attained two fully expanded cotyledons.
On brashy and stony soils, PARSAN EXTRA may cause some reduction in crop vigour and/or plant stand, due to the chemical moving down to the root zone too quickly.
Do not apply PARSAN EXTRA to soils with a compaction layer or to poorly drained soils, since damage can occur under waterlogged conditions.
A reduction in crop vigour, weed control and possibly plant stand may occur if excessive rain falls shortly after application, particularly on the lighter soils. Where crop growth has been checked, this normally grows out after a few weeks and yields are normally unaffected.
Care should be taken to avoid overlap of spray swaths.
Do not treat crops which are suffering from wilting, pests or diseases.
Under frosty conditions a transient scorch may occur.
Do not use PARSAN EXTRA under frosty conditions in tank mixture with other products.
If PARSAN EXTRA is applied onto a dry soil surface it will only be effective after rain has occurred.
 
Extreme care should be taken to avoid damage by drift onto plants outside the target area.
To reduce the risk of movement of PARSAN EXTRA to water:
On clay soils, create a fine, consolidated seedbed to slow the downward movement of water.
Do not apply PARSAN EXTRA to dry soil. Moist soils have fewer and smaller cracks.
Do not apply PARSAN EXTRA if heavy rain is forecast, wait until after the event.
 
Crops
PARSAN EXTRA can be used on all varieties of winter and spring sown oilseed rape.
PARSAN EXTRA may be applied pre or post emergence of the crop but for maximum activity application must be pre-emergence of the weeds.
Pre crop emergence applications should be made before the seed chits, which in warm moist soils may occur within 48 hours of drilling. Seedbeds should be moist, firm and free from clods, but also see Restrictions/Warnings section. DO NOT USE PRE-EMERGENCE ON BROADCAST CROPS.
Post crop emergence applications can be made from when the majority of the crop has two fully expanded cotyledons until up to and including 8th true leaf stage (GS 18). The soil should be moist at application or rainfall must occur shortly after application, but also see Restrictions/Warnings section.
 
Weed Control
Soil moisture is required for effective weed control via root uptake. Residual control may be reduced under prolonged dry conditions. Weeds germinating from depth may not be controlled.
 
Resistance management
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 such 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.
Repeated use of herbicides with the same mode of action can increase the risk of strains of weeds developing resistance to these compounds, leading to poor control. In order to minimise the risk, a strategy for preventing and managing such resistance should be adopted. Use products with different modes of action and from different chemical groups in sequence or tank-mix, in conjunction with effective cropping rotation and cultivation techniques. In all cases the recommended rate of use should be adhered to. Follow WRAG guidelines.
Key elements of the resistance management strategy for PARSAN EXTRA:
Always follow HRAC & WRAG guidelines for preventing and managing herbicide resistant weeds.
Maximise the use of cultural control measures wherever possible (e.g. crop rotation, ploughing, stale seedbeds, delayed drilling, etc).
Use tank mixes or sequences of effective herbicides with different modes of action within individual crops, or successive crops.
For the control of herbicide resistant grass weeds, always use PARSAN EXTRA in sequence with other effective graminicides with different modes of action.
 Monitor fields regularly and investigate the reasons for any poor control.
 
Miixing
SHAKE WELL BEFORE USE Fill the spray tank three quarters 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 PARSAN EXTRA to the spray tank while re-circulating. Fill the tank with the remaining required amount of water and continue agitation until spraying is completed. On emptying the product 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.
 
Application
Apply 2.0 litres/hectare of PARSAN EXTRA as a MEDIUM spray, as defined by BCPC. PARSAN EXTRA should be applied in a recommended water volume of 200 litres/hectare.
 
Qualified recommendation
PARSAN EXTRA may be applied at 2.0 L/ha in 100 litres of water per hectare although efficacy and crop safety at this reduced volume has not been evaluated. Care should be taken to avoid overlap of spray swaths. Extreme care should be taken to avoid damage by drift onto plants outside the target area. Wash sprayer thoroughly immediately after use, using clean water and following the guidance provided by the equipment manufacturer.
 
Following Crops
For all situations following or rotational crops must not be planted until six months after application of PARSAN EXTRA. Any crop may follow normally harvested winter and spring-sown oilseed rape treated with PARSAN EXTRA.
 
Re-drilling due to crop failure
Following or rotational crops must not be planted until six months after application of PARSAN EXTRA. Plough to a depth of at least 150 mm before sowing or planting any succeeding crop.