KatamaranPlant Protection Product ComparisonPlant Protection Product ComparisonReport inaccuraciesReport inaccuracies

A suspension concentrate containing 125 g/l (10.8% w/w) quinmerac and 375 g/litre (32.3% w/w) metazachlor. A residual herbicide for the control of a range of broad-leaved and grass weeds, including cleavers, in winter and spring oilseed rape.

DIRECTIONS FOR USE

 Katamaran 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

Katamaran 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 Katamaran 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 15 mm.

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, Katamaran 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 Katamaran 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 Katamaran under frosty conditions in tank mixture with other products. If Katamaran 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 Katamaran to water:- a) On clay soils, create a fine, consolidated seedbed to slow the downward movement of water. b) Do not apply Katamaran to dry soil. Moist soils have fewer and smaller cracks. c) Do not apply Katamaran if heavy rain is forecast, wait until after the event.

Crops

Katamaran can be used on all varieties of winter and spring-sown oilseed rape.

Katamaran 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 crop 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.

Susceptibility of weeds to single applications of Katamaran.

WINTER AND SPRING OILSEED RAPE

Weed:Amaranth, Common

Rate:Katamaran 2.0 l/ha

Critical Comments: Pre-emergence of weed Rating- S ; Maximum susceptible growth stage- Pre-em;

Weed:Annual Mercury

Rate:Katamaran 2.0 l/ha

Critical Comments: Pre-emergence of weed Rating- R ; Maximum susceptible growth stage-Pre-em ;

Weed:Black-grass

Rate:Katamaran 2.0 l/ha

Critical Comments: Pre-emergence of weed Rating- S ; Maximum susceptible growth stage- Pre-em;

Weed:Chamomile, Corn

Rate:Katamaran 2.0 l/ha

Critical Comments: Pre-emergence of weed Rating-S  ;Post-emergence of weed Rating-S; Maximum susceptible growth stage-GS 11;

Weed:Chickweed, Common

Rate:Katamaran 2.0 l/ha

Critical Comments: Pre-emergence of weed Rating-S  ;Post-emergence of weed Rating-S; Maximum susceptible growth stage-GS 11 ;

Weed:Cleavers

Rate:Katamaran 2.0 l/ha

Critical Comments: Pre-emergence of weed Rating- S ;Post-emergence of weed Rating-S; Maximum susceptible growth stage-GS 12 ;

Weed:Corn Spurrey

Rate:Katamaran 2.0 l/ha

Critical Comments: Pre-emergence of weed Rating- S ;Post-emergence of weed Rating-MS; Maximum susceptible growth stage- GS 12;

Weed:Cranesbill, Cut-leaved

Rate:Katamaran 2.0 l/ha

Critical Comments: Pre-emergence of weed Rating- MR ; Maximum susceptible growth stage- Pre-em;

Weed:Cranesbill, Round-leaved

Rate:Katamaran 2.0 l/ha

Critical Comments: Pre-emergence of weed Rating-R  ; Maximum susceptible growth stage-Pre-em ;

Weed:Cranesbill, Small flowered

Rate:Katamaran 2.0 l/ha

Critical Comments: Pre-emergence of weed Rating- R ; Maximum susceptible growth stage-Pre-em ;

Weed:Dead-nettle, Hen-bit

Rate:Katamaran 2.0 l/ha

Critical Comments: Pre-emergence of weed Rating- S ;Post-emergence of weed Rating-S;  Maximum susceptible growth stage- GS 12 ;

Weed:Dead-nettle, Red

Rate:Katamaran 2.0 l/ha

Critical Comments: Pre-emergence of weed Rating-S  ;Post-emergence of weed Rating-S; Maximum susceptible growth stage- GS 12 ;

Weed:Fat Hen 

Rate:Katamaran 2.0 l/ha

Critical Comments: Pre-emergence of weed Rating-MR  ;Post-emergence of weed Rating-MR; Maximum susceptible growth stage-GS 11 ;

Weed:Fool‘s Parsley

Rate:Katamaran 2.0 l/ha

Critical Comments: Pre-emergence of weed Rating- S ;Post-emergence of weed Rating-S; Maximum susceptible growth stage-GS 10 ;

Weed:Forget-me-not, Field Fumitory, Common 

Rate:Katamaran 2.0 l/ha

Critical Comments: Pre-emergence of weed Rating-S  ; Maximum susceptible growth stage-Pre-em ;

Weed: Field Fumitory, Common

Rate:Katamaran 2.0 l/ha

Critical Comments: Pre-emergence of weed Rating-R  ;Maximum susceptible growth stage-Pre-em ;

Weed:Groundsel, Common

Rate:Katamaran 2.0 l/ha

Critical Comments: Pre-emergence of weed Rating- S ; Maximum susceptible growth stage-Pre-em ;

Weed:Knotgrass 

Rate:Katamaran 2.0 l/ha

Critical Comments: Pre-emergence of weed Rating- R;  Maximum susceptible growth stage-Pre-em ;

Weed:Loose Silky Bent 

Rate:Katamaran 2.0 l/ha

Critical Comments: Pre-emergence of weed Rating- S; Maximum susceptible growth stage-Pre-em ;

Weed:Mayweed, Scented

Rate:Katamaran 2.0 l/ha

Critical Comments: Pre-emergence of weed Rating- S; Post-emergence of weed Rating-S;  Maximum susceptible growth stage-GS 14;

Weed:Mayweed, Scentless  

Rate:Katamaran 2.0 l/ha

Critical Comments: Pre-emergence of weed Rating-S  ;Post-emergence of weed Rating-S; Maximum susceptible growth stage- GS 14;

Weed:Meadowgrass, Annual

Rate:Katamaran 2.0 l/ha

Critical Comments: Pre-emergence of weed Rating- S  Maximum susceptible growth stage-Pre-em ;

Weed: Mustard, Hedge

Rate:Katamaran 2.0 l/ha

Critical Comments: Pre-emergence of weed Rating-R  ; Maximum susceptible growth stage-Pre-em ;

Weed:Nettle, Small  

Rate:Katamaran 2.0 l/ha

Critical Comments: Pre-emergence of weed Rating-S  ; Maximum susceptible growth stage-Pre-em ;

Weed:Pansy, Field 

Rate:Katamaran 2.0 l/ha

Critical Comments: Pre-emergence of weed Rating-R  ; Maximum susceptible growth stage-Pre-em ;

Weed:Parsley Piert

Rate:Katamaran 2.0 l/ha

Critical Comments: Pre-emergence of weed Rating- S ; Maximum susceptible growth stage-Pre-em ;

Weed:Penny-cress, Field 

Rate:Katamaran 2.0 l/ha

Critical Comments: Pre-emergence of weed Rating-R  ;Maximum susceptible growth stage-Pre-em ;

Weed:Poppy, Common

Rate:Katamaran 2.0 l/ha

Critical Comments: Pre-emergence of weed Rating- S ;Post-emergence of weed Rating-S; Maximum susceptible growth stage-GS12 ;

Weed:Shepherd‘s-purse  

Rate:Katamaran 2.0 l/ha

Critical Comments: Pre-emergence of weed Rating- S ;Post-emergence of weed Rating-S; Maximum susceptible growth stage-GS 10 ;

Weed:Sowthistles

Rate:Katamaran 2.0 l/ha

Critical Comments: Pre-emergence of weed Rating-S  ; Maximum susceptible growth stage-Pre-em ;

Weed:Speedwell, Common field

Rate:Katamaran 2.0 l/ha

Critical Comments: Pre-emergence of weed Rating-S  ;Post-emergence of weed Rating-S; Maximum susceptible growth stage-GS12 ;

Weed:Speedwell, Ivy-leaved

Rate:Katamaran 2.0 l/ha

Critical Comments: Pre-emergence of weed Rating-S ;Post-emergence of weed Rating-S; Maximum susceptible growth stage-GS10 ;

Weed:Speedwell, Procumbent

Rate:Katamaran 2.0 l/ha

Critical Comments: Pre-emergence of weed Rating-S ; Maximum susceptible growth stage-Pre-em ;

Weed: Speedwell, Wall

Rate:Katamaran 2.0 l/ha

Critical Comments: Pre-emergence of weed Rating-S  ; Maximum susceptible growth stage-Pre-em ;

Weed:Volunteer barley

Rate:Katamaran 2.0 l/ha

Critical Comments: Pre-emergence of weed Rating-R ;Maximum susceptible growth stage-Pre-em ;

Weed:Volunteer wheat

Rate:Katamaran 2.0 l/ha

Critical Comments: Pre-emergence of weed Rating-R ; Maximum susceptible growth stage- Pre-em ;

(S = Susceptible; Pre-em = Pre-emergence of weed; R = Resistant; MS = Moderately Susceptible; # = From seed MR = Moderately Resistant - = No information)

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 (WRAG) and copies are available from the HGCA, CPA, your distributor, crop adviser 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 Katamaran: • 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 Katamaran in sequence with other effective graminicides with different modes of action. • Monitor fields regularly and investigate the reasons for any poor control.

 Mixing

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 Katamaran 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 Katamaran as a MEDIUM spray, as defined by BCPC. Katamaran should be applied in a recommended water volume of 200 litres/ hectare. Qualified recommendation

Katamaran 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 four months after application of ‘Katamaran’. Any crop may follow normally harvested winter and spring-sown oilseed rape treated with Katamaran. Re-drilling due to crop failure Following or rotational crops must not be planted until four months after application of ‘Katamaran’. Plough to a depth of at least 150 mm before sowing or planting any succeeding crop.