Twinprop.

A herbicide for the control of a wide range of broad leaved weeds, including cleavers and common chickweed, in winter and spring sown cereals and amenity grassland.

A soluble concentrate formulation containing 600 g/l mecoprop-P (48.2% w/w) formulated as potassium salt.

DIRECTIONS FOR USE
TWINPROP is a hormone herbicide which is absorbed by both shoots and roots and rapidly translocated within herbaceous plants. Apply as a MEDIUM spray as defined by BCPC. The best weed control will be achieved if crops are sprayed in conditions when weeds are actively growing, provided the crop is within the correct growth stages, see below. This is particularly important when TWINPROP is used in the spring to control large autumn germinated cleavers, which may have become ‘winter hardened’.

WINTER WHEAT, WINTER BARLEY, WINTER OATS
Weeds: Chickweed, Common; Fat-hen; Pennycress, Field; Buttercup, Corn; Charlock; Cleavers; Mouse-ear, Common; Mustard, Black; Mustard, Treacle; Mustard, White; Nettle, Small; Plantain, Greater; Plantain, Ribwort; Radish, Wild; Shepherd’s-purse; Black-bindweed; Buttercup, Creeping; Campion, White; Cranesbill, Cut-leaved; Cranesbill, Dove’s-foot; Deadnettle, Red; Docks; Forget-me-not, Field, Fumitory, Common; Groundsel; Hempnettle; Common Knotgrass; Marigold, Corn; Mayweed, Scented; Mayweed, Scentless; Nightshade, Black; Oilseed Rape, Volunteer; Orache; Pansy, Field; Persicaria, Pale; Pimpernel, Scarlet; Poppy, Common; Redshank; Sowthistle, Perennial; Sowthistle, Prickly; Sowthistle, Smooth; Speedwell, Common Field; Speedwell, Ivy-leaved; Thistle, Creeping; Turnip, Wild; Viper’s Bugloss.
Rate: 2.3/ha
Critical comments: maximum total dose - 2.3 per crop. Latest time of application: before 3rd node detectable stage (GS 33).

SPRING WHEAT, SPRING BARLEY, SPRING OATS
Weeds: Chickweed, Common; Fat-hen; Pennycress, Field; Buttercup, Corn; Charlock; Cleavers; Mouse-ear, Common; Mustard, Black; Mustard, Treacle; Mustard, White; Nettle, Small; Plantain, Greater; Plantain, Ribwort; Radish, Wild; Shepherd’s-purse; Black-bindweed; Buttercup, Creeping; Campion, White; Cranesbill, Cut-leaved; Cranesbill, Dove’s-foot; Deadnettle, Red; Docks; Forget-me-not, Field, Fumitory, Common; Groundsel; Hempnettle; Common Knotgrass; Marigold, Corn; Mayweed, Scented; Mayweed, Scentless; Nightshade, Black; Oilseed Rape, Volunteer; Orache; Pansy, Field; Persicaria, Pale; Pimpernel, Scarlet; Poppy, Common; Redshank; Sowthistle, Perennial; Sowthistle, Prickly; Sowthistle, Smooth; Speedwell, Common Field; Speedwell, Ivy-leaved; Thistle, Creeping; Turnip, Wild; Viper’s Bugloss.
Rate: 2.3/ha
Critical comments: maximum total dose - 2.3 per crop. 

AMENITY GRASSLAND
Weeds: Docks, Common Chickweed.
Rate: 2.3l/ha
Critical comments: maximum total dose - 4.6 per year. 

CROP SPECIFIC INFORMATION
WINTER WHEAT, BARLEY and OATS
Rate of Application: 2.3 L/ha For autumn applications or in spring applied mixtures with specific herbicides (see mixtures section below), apply a maximum of 2.0 litres TWINPROP per hectare.
Time of application: From one leaf stage in the autumn to before third node detectable stage. Spring application may follow autumn treatment. Once tillering has begun, winter cereals become susceptible to damage from Mecoprop-P until the leaf sheath erect stage is reached. Late spraying: Where spraying has been unavoidably delayed, TWINPROP may be applied up to and including the second node detectable stage. Applications at this timing may result in poorer weed control and also the optimum yield may not be achieved. Do not use late applications of TWINPROP in mixture with more than one additional product, or where crops are potentially stressed from factors such as poor fertility, previous sprays or adverse weather conditions, e.g. frost, severe day/night temperature fluctuations or dry soils. Autumn application of TWINPROP to control common chickweed may not be fully effective under frost conditions which can reduce the efficiency of the chemical. If sharp or severe frosts occur within three to four weeks of application to barley under stress or of low vigour on light soils, scorch or stunting may occur and yields may be less than optimum.

SPRING WHEAT, OATS AND BARLEY
Rate of application: 2.3 L/ha
Time of application: From the first fully expanded leaf stage to before the first node detectable stage.

AMENITY GRASSLAND
Rate of application: 2.3 L/ha
Time of application: The sward should not be topped for at least a week before or after spraying. A maximum of two applications per year are permitted.
Docks. Allow to flower in July and then cut the flower stalks before seeding to weaken root reserves. Wait two weeks and then apply the recommended rate TWINPROP. Docks will be severely checked but may recover, in which case the treatment should be repeated in the following season.
Common Chickweed. Treat when actively growing and not shielded by grass, usually late summer or autumn. If appreciable foliage is present there will be top growth suppression of weeds listed as Top Growth Suppressed in the weed susceptibility table.

WATER VOLUME
Apply in 170 – 400 L water/ha. The lowest volume should only be used in open crops where weeds are small and where recommendations for any tank mix partner allow. As weeds become larger and/or crop cover increases, then the water volume should be increased. This is particularly important with cleavers. Once cleavers are beyond the two whorl stage up to six whorls, a water volume of at least 330 L water/ha to ensure good coverage and control.

MIXING
Half fill the spray tank with clean water and start the agitation. Pour in the required amount of TWINPROP. Add the remainder of the water and continue agitation until spraying is completed. This product may only be used in a tank mix or in sequence with other products when these uses comply with the label recommendations of every product in the tank mix/sequence. When tank mixes are to be used, each product should be added separately to the spray tank, taking due note of any instructions given as to the order of mixing. Incompatible Mixtures: TWINPROP is not compatible with trace element applications containing manganese sulphate.

RESISTANCE
When herbicides with the same mode of action are used repeatedly overseveral years in the same field, selection of resistant biotypes can take place. These can propogate and may become dominating. A weed species is considered to be resistant to a herbicide if it survives a correctly-applied treatment at the recommended dose. A strategy for preventing and managing such resistance should be adopted. This should include integrating herbicides with a programme of cultural control measures. Guidelines have been produced by the Weed Resistance action Group and copies are available from your distributor, crop advisor or product manufacturer.

IMPORTANT NOTES
Do not apply TWINPROP to any crop suffering from herbicide damage or physical stress.
Do not apply TWINPROP during cold weather, periods of drought, if rain or frost are expected, nor if the crop is wet.
The crop should not be rolled or harrowed within a period of seven days before or after spraying with TWINPROP.
Avoid damage by spray drift on to susceptible crops such as beans, beet, brassicae (including oilseed rape), fruit crops, glasshouse crops, hops, lettuce, ornamentals, peas, potatoes, tomatoes and vines.
WASH EQUIPMENT thoroughly immediately after use. Fill the tank with clean water and leave overnight. Spray out before storage or using other products. Traces of the product may cause damage to susceptible crops sprayed later.
TWINPROP is not for use on Agricultural Grassland or Undersown crops.