Credit DSTPlant Protection Product ComparisonPlant Protection Product ComparisonReport inaccuraciesReport inaccuracies

A foliar applied herbicide for the control of annual and perennial grasses and broad-leaved weeds before sowing or planting all crops. For use pre-emergence and pre-harvest in cereals, oilseed rape and certain other crops, destruction of grassland, and in stubbles, orchards, forestry, non-crop areas and on set-aside land.

 

Unique patented dual salt technology with the benefit of the ammonium salt as well as the IPA salt.

A fresh approach for the use of glyphosate.

Flexibility to tank mix with an adjuvant of choice to get optimum results.

Broad labe.

 

LERAP category: Unclassified

Pack size: 15, 1000 litres

Storage: PROTECT FROM FROST

 

Other specific restrictions:

When using with rotary atomiser knapsack sprayers the minimum water volume must be 20 l/ha The empty bulk container must be returned to the supplier. The empty container must not be used for any other purpose. *CREDIT DST does not need to be mixed with an authorised adjuvant. Weed-wipers may be used in any crop where the wiper does not touch the growing crop. Maximum concentrations used must not exceed the following:

Weed-wiper mini 1:3.5 dilution with water

Other wipers 1:2 dilution with water

Stump treatment 13.33% solution in water

 

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.

 

TAKE EXTREME CARE TO AVOID SPRAY DRIFT.

DO NOT MIX, STORE OR APPLY CREDIT DST IN GALVANISED OR UNLINED STEEL CONTAINERS OR SPRAY TANKS.

DO NOT leave spray mixtures in tank for long periods and make sure tanks are WELL VENTED.

 

A period of at least 12 hours and preferably 24 hours rain free must follow spraying.

DO NOT spray onto weeds which are naturally senescent, or where growth is impaired by drought, high temperatures, a covering of dust, flooding or frost at, or immediately after application, otherwise poor control may result.

DO NOT spray in windy conditions as drift onto desired crops or vegetation could severely damage or destroy them.

As CREDIT DST takes a few days to fully translocate throughout a weed, applications of lime, fertiliser, farmyard manure and pesticides should be made five days or more AFTER application of this product.

Keep stock out of treated areas for seven days to allow the herbicide to become fully effective.

TREATED POISONOUS PLANT SPECIES MUST BE REMOVED BEFORE RE-GRAZING OR CONSERVING.

 

There is low risk for the development of weed resistance to CREDIT DST.

Growers are encouraged to implement a weed resistance strategy based on (a) Good Agricultural Practices and (b) Good Plant Protection Practices by:

Following label recommendations.

The adoption of complementary weed control practices.

Minimising the risk of spreading weed infestations.

The implementation of good spraying practice to maintain effective weed control.

Using the correct nozzles to maximise coverage.

Application only under appropriate weather conditions.

Monitoring performance and reporting any unexpected results to Nufarm UK Limited.

Strains of some annual weeds (e.g. Blackgrass, Wild oat and Italian ryegrass) have developed resistance to herbicides which may lead to poor control. 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 the HGCA, CPA, your distributor, crop adviser or Nufarm UK Ltd.

 

CREDIT DST is for use in tank-mix only with authorised adjuvants. DO NOT use CREDIT DST ALONE unless stated. CREDIT DST is a foliar acting herbicide which controls annual and perennial grasses and most broad-leaved weeds when used as directed. It is translocated from treated vegetative growth to underground roots, rhizomes or stolons.

PERENNIAL GRASS WEEDS MUST HAVE A FULL EMERGENCE OF HEALTHY, GREEN LEAF WHICH IS GROWING ACTIVELY AT THE TIME OF APPLICATION. COMMON COUCH REACHES THE SUSCEPTIBLE STAGE OF GROWTH WHEN TILLERING AND NEW RHIZOME GROWTH COMMENCE WHICH USUALLY OCCURS WHEN PLANTS HAVE FOUR TO FIVE LEAVES EACH WITH 10–15 CM OF NEW GROWTH.

THE MAJORITY OF PERENNIAL BROAD-LEAVED WEEDS ARE MOST SUSCEPTIBLE IF TREATED WHEN THEY ARE GROWING ACTIVELY AND AT, OR NEAR, FLOWERING STAGE.

ANNUAL WEEDS SHOULD BE GROWING ACTIVELY, WITH GRASSES HAVING AT LEAST 5 CM OF LEAF AND BROAD-LEAVED WEEDS AT LEAST TWO EXPANDED TRUE LEAVES WHEN SPRAYED.

It is important that all weeds are at the correct growth stage when treated, otherwise some re-growth may occur and this will require re-treatment.

This product will not give acceptable levels of control of Horsetails (Equisetum arvense). Repeat treatment will be necessary.

Weeds become less susceptible to CREDIT DST when their growth is restricted by natural senescence or by drought, frost, high temperature, a covering of dust or flooding. Reduced control will result if such conditions occur at, or immediately after, spraying.

 

Nufarm recommends that CREDIT DST can be tank-mixed with the following adjuvants:

Bonser (A0751); Binder (A0598); Frigate (A0325).

 

Where conventional hydraulic sprayers are being used:

Bonser should be added to the spray tank solution before CREDIT DST at the rate of 1.0 litre for each 100 litres water volume;

Binder should be added to the spray tank solution at the rate of 0.5 litres for each 100 litres water volume;

Frigate should be added to the spray tank solution at the rate of 0.5 litres for each 100 litres water volume.

Do not tank mix this product with fertilizers.

 

All edible or non-edible crops may be sown or planted at specified intervals following the use of this product.

Occasionally, a slight check to crop growth may occur, particularly after direct drilling, when crop seeds germinate amongst a mass of decaying foliage, stolons, rhizomes or roots. Thorough cultivations are necessary to disperse or bury the decaying organic matter.

Consolidate loose soils and ensure crops are adequately fertilized and appropriate measures are taken to prevent insect and fungal damage to the following crop, especially where following grassland.

 

Target weed:Common couch

Weed infestation:Up to 25 shoots/m2

Dose rate +approved adjuvant:1.33 l/ha

Weed infestation:26 to 75 shoots/m2

Dose rate +approved adjuvant:2.0 l/ha

Weed infestation:Over 75 shoots/m2 In direct drilled crops

Dose rate +approved adjuvant:2.67 l/ha

Water volume:Hydraulic sprayers 80–250 l/ha

 

Target weed:Perennial broad-leaved weeds, other perennial grasses

Weed infestation:All levels of all species

Dose rate +approved adjuvant:2.67 l/ha

Water volume:Hydraulic sprayers 80–250 l/ha

 

 

Target weed:Harvest management

Weed infestation:Annual grasses, Cereal stems, Cereal leaves

Dose rate +approved adjuvant:0.67 l/ha

Weed infestation:Annual broad-leaved weeds

Dose rate +approved adjuvant:1.0 l/ha

Water volume:Hydraulic sprayers 80–250 l/ha

 

Apply when the moisture content of the youngest crop grains is below 30%, not less than seven days before harvest and up to 14 days before harvest for volunteer wheat and wheat crops. Use high clearance tractors with narrow wheels and crop dividers. DO NOT TREAT CROPS GROWN FOR SEED. Straw may be used for all purposes except as a horticultural mulch. After harvest, chop/incorporate or remove straw as required. Normal cultivations may be made after straw removal.

 

Target weed:Crop desiccation prior to direct combine harvesting

Dose rate +approved adjuvant:2.0 l/ha

Water volume:Hydraulic sprayers only 100–250 l/ha

 

Target weed:Common couch

Weed infestation:Up to 75 shoots/m2

Dose rate +approved adjuvant:2.0 l/ha

Weed infestation:Over 75 shoots/m2

Dose rate +approved adjuvant:2.67 l/ha

Water volume:Hydraulic sprayers only 100–250 l/ha

 

Target weed:Annual weeds

Weed infestation:All levels of all species

Dose rate +approved adjuvant:2.0 l/ha

Water volume:Hydraulic sprayers only 100–250 l/ha

 

Target weed:Perennial broad-leaved weeds, other perennial grasses

Weed infestation:All levels of all species

Dose rate +approved adjuvant:2.67 l/ha

Water volume:Hydraulic sprayers only 100–250 l/ha

 

Apply when crop seeds have under 30% moisture content. Apply to standing crops at these intervals before harvest: Oilseed rape – 14–21 days, Mustards – 14 days. Use high clearance narrow wheeled tractors using wide booms and crop dividers. DO NOT TREAT CROPS GROWN FOR SEED.

For effective combining: DO NOT treat crops with significant levels of secondary re-growth. DO NOT treat late maturing areas of crops affected by pigeon damage, poor drainage, etc. Crops suffering from stress factors, disease, extreme heat or drought may not mature evenly following treatment. After harvest, chop/incorporate or remove straw as required. Normal cultivations may follow after straw removal.

 

Target weed:Common couch

Weed infestation:Up to 75 shoots/m2

Dose rate +approved adjuvant:2.0 l/ha

Weed infestation:Over 75 shoots/m2

Dose rate +approved adjuvant:2.67 l/ha

Water volume:Hydraulic sprayers 80–250 l/ha

Target weed:Annual weeds

Weed infestation:All levels of all species

Dose rate +approved adjuvant:2.0 l/ha

Water volume:Hydraulic sprayers 80–250 l/ha

 

Target weed:Perennial broad-leaved weeds, other perennial grasses

Dose rate +approved adjuvant:2.67 l/ha

Water volume:Hydraulic sprayers 80–250 l/ha

 

Apply when crop seeds have under 30% moisture content. Apply seven days or more before harvest. This treatment cannot be used as a crop desiccant. Use high clearance tractors with narrow wheels and crop dividers. DO NOT TREAT CROPS GROWN FOR SEED.

 

Target weed:Crop desiccation prior to direct combine harvesting

Dose rate +approved adjuvant:2.0 l/ha

Water volume:Hydraulic sprayers only 80–250 l/ha

 

Target weed:Common couch

Weed infestation:Up to 75 shoots/m2

Dose rate +approved adjuvant:2.0 l/ha

Weed infestation:Over 75 shoots/m2

Dose rate +approved adjuvant:2.67 l/ha

Water volume:Hydraulic sprayers only 80–250 l/ha

 

Target weed:Perennial broad-leaved weeds, other perennial grasses

Weed infestation:All levels of all species

Dose rate +approved adjuvant:2.67 l/ha

Water volume:Hydraulic sprayers only 80–250 l/ha

 

Apply when crop seeds have under 30% moisture content. At this stage seed is normally light brown and the capsules are brown; the stems and leaves may be green to yellow/green. Accurate measurements of moisture content must be made. Apply 14 days or more before harvest. Where application takes place in the autumn, it must be checked that weeds are still susceptible, see earlier section on timing of application and weeds susceptibility. A delay of up to 28 days after spraying may be necessary prior to combine harvesting. DO NOT TREAT CROPS GROWN FOR SEED

 

Target weed:Cereals; Oilseed rape; Mustard; Linseed; Peas; Field beans; Sugar bee;t Swede Turnip; Bulb onion; Leek.

Weed infestation:All levels of all annual weed species

Dose rate +approved adjuvant:1.0 l/ha

Water volume:Hydraulic sprayers only 80–250 l/ha

 

Ensure that spraying precedes ANY crop emergence.

 

Target weed:Common couch

Weed infestation:Up to 75 shoots/m2

Dose rate +approved adjuvant:2.0 l/ha

Weed infestation:Over 75 shoots/m2

Dose rate +approved adjuvant:2.67 l/ha

Water volume:Hydraulic sprayers 80–250 l/ha

 

Target weed:Other perennial grasses; Volunteer potatoes (autumn only)

Weed infestation:All levels of all species

Dose rate +approved adjuvant:2.67 l/ha

Water volume:Hydraulic sprayers 80–250 l/ha

 

Do not cultivate BEFORE spraying. Allow a minimum of five days to elapse between spraying and cultivations or drilling. Allow volunteer potatoes to make ample top growth before spraying. A minimum period of 21 days weed growth in the spring should occur before spraying.

 

Target weed:Volunteer cereals; Other annual grasses, Annual broad-leaved weeds

Weed infestation:All levels of all species

Dose rate +approved adjuvant:1.0 l/ha

Water volume:Hydraulic sprayers 80–250 l/ha

 

Cultivations may be made 24 hours after spraying. Direct drilling may take place two days after spraying.

 

Weed infestation:All levels of all species

Dose rate +approved adjuvant:

2.67 l/ha o

3.33 l/ha

Water volume:Hydraulic sprayers 80–250 l/ha

 

Refer to Timing of Application. All top fruit crops may be planted from seven days after spraying.

 

Weed infestation:All levels, most species

Dose rate +approved adjuvant:3.33 l/ha

Water volume:Hydraulic sprayers 200–400 l/ha. Optimum 250 l/ha

 

Weed infestation:All species

Dose rate +approved adjuvant:3.33 l/ha

Water volume:Hydraulic sprayers 200–400 l/ha. Optimum 250 l/ha

 

Trees must have been established for two years before spraying. Spray after fruit trees have lost all their leaves in autumn, or before green clusters stage of apple and pear or white bud stage of stone fruit in spring. Avoid contact with tree branches and trunks above 30 cm from the ground.

 

 

All machines capable of applying accurately 80–250 l/ha, as a MEDIUM or COARSE quality spray – (BCPC definition) within a pressure range of 1.5–2.5 bars using 80° or 110° nozzles, may be used. For application pre-harvest of crops it is essential to use a sprayer whose boom may be raised to the correct height.

For general use 200–250 l/ha is the preferred volume range. For specific uses, volumes may be reduced to 80–120 l/ha by selecting low volume hydraulic nozzles and adjusting pressure of application and tractor forward speed.

Pressures must be related to tractor forward speed, desired water volume and nozzle type. A range of 1.5–2.5 bars must be used to ensure optimum results with minimum risk of drift.

Speed of travel must be related to nozzle output characteristics. The typical range is from 4–9 kph. The slower speeds should be selected for applications pre-harvest of crops and where soil conditions could cause excessive boom bounce and yaw at the faster speeds.

80° or 110° nozzles able to apply the required volume at pressures between 1.5–2.5 bars at between 4–9 kph are recommended.

Half fill the spray tank with water and start agitation. Add recommended quantity of CREDIT DST herbicide, top-up tank with water to required level.

Before using the sprayer and, especially, after nozzles have been changed, it is essential to calibrate the sprayer by checking the output of at least one nozzle for each separate boom section of the sprayer.

Check the following before starting to spray: that the nozzles are aligned evenly at the correct angle to the direction of travel; that the boom is level over its width; that the boom height permits the correct pattern of spray overlap on the target weeds.

Ensure that the sprayer is in good working order by paying particular attention to the condition of the pump, hoses, nozzles or disc assemblies and pressure gauge. Replace damaged, worn or malfunctioning parts. If extra filtration or pressure damp valves have been fitted for low volume work at 80–120 l/ha make certain this equipment is clean and functioning correctly. Carry out maintenance according to the instructions of the sprayer manufacturer. This is of utmost importance when using low volume nozzles.

It is essential to thoroughly clean out sprayer tanks, pumps and pipelines and nozzle or disc assemblies, with a recommended detergent cleaner, between applying this product and other pesticides to avoid contamination from pesticide residues.

 

 

Knapsack applicator: These may be used in forestry, orchards and non-crop areas. Normal water volume is 200–300 l/ha but by fitting low volume nozzles it can be reduced to 100–150 l/ha. All applications to be as a MEDIUM or COARSE quality spray (BCPC definition).

Example of use: At a walking speed of 1.0 m/sec and with a one metre wide swath most knapsack sprayers fitted with a Lurmark AN 2.0 or similar nozzle deliver 200 l/ha spray volume. To apply 2.67 l/ha of CREDIT DST use 26 ml of product for each two litres of spray liquid required.

 

This applicator may be used to apply an accurately measured dose of CREDIT DST herbicide spray solution for the spot treatment of weeds.

Amount of CREDIT DST (ml) per five litres of spray solution when the Spot Gun is fitted with the TG-SS2.8W nozzle.

 

Individual weeds may be treated using the Spot Gun fitted with a narrow angle cone nozzle, either the TG-3 or TG-5 nozzle. The spot diameter will increase with the distance of the target weed from the nozzle tip.

 

The applicator must be fitted with a solid stream nozzle, either a Spraying System 0006 or a Delavan LF 6.0. Set the gun to apply 1.33 ml of neat CREDIT DST per cut.

 

The applicator must be fitted with a narrow angle cone nozzle, either the TG-3 or TG-5 or solid stream nozzle tips either a Delavan LF 6.0 or Spraying Systems 0006.

Set the gun to deliver 3.33 ml per squeeze and select the concentration of CREDIT DST according to usage recommendations. A dose of 3.33 ml should be applied for each 5 cm diameter of tree stump.

 

Enso attachment to rotary saws.

This technique is specific to scrub clearance in Forestry. The water soluble dye Methyl Violet Gurr may be added to CREDIT DST at a concentration of 0.01% to help identify treated stumps. This is equivalent to the addition of 1ml of dye to 10 litres of spray liquid.

 

Treatment of sugar beet bolters, weed beet and other weeds: For use in arable crops, grassland and forestry areas. Ensure there is at least 5 cm between the top of the tallest desired vegetation and the impregnated wiper. Weeds should be a minimum of 10 cm taller than the desired vegetation for safe application. Two passes in opposite directions will be needed where weeds are dense and successive applications will be required to control weeds that were below the original wiping level. Treat before weed seeds have matured to reduce to a minimum seed return to the soil. Bolting beet should be treated by a series of three applications during early July to early August with two weeks between treatments.

WEEDS MUST BE GROWING ACTIVELY TO BE SUSCEPTIBLE. DO NOT USE WIPER TECHNIQUES IN SOFT FRUIT CROPS.

 

Hectaspan Weedwiper ;Tecnoma Top Weeder; Keenan Weed Licker; Telford Homburg Chemical Applicator; Matrot Mobilcord; Vicon Wedge-Wik.

The recommended concentration is at least one part of CREDIT DST herbicide to two parts water. Under hot, dry conditions a concentration of one part of CREDIT DST herbicide to two parts water is preferred.

For best results with all wiper applicators:

Operate at speeds below 5 kph.

Treat when weeds reach 10 cm above the desired vegetation.

Keep wiping surfaces wet but prevent dripping.

Clean ropes several times a day to maintain optimum flow rate.