Kerb Flo 500

Manufacturer
Dow AgroSciences
Category
Herbicides
Registered until
N/A
Registration number
15586
Active materials
Links
A suspension concentrate containing 500 g/litre (43.86% w/w) propyzamide.
A residual herbicide for the control of a wide range of weeds in WINTER OILSEED RAPE and WINTER FIELD BEANS.
Active Ingredient: 500 g/litre propyzamide
Pack Size: 10.0 Litres
Formulation: Suspension concentrate
Maximum Individual Dose: 1.7 L/ha
Maximum Total Dose: One per crop
Latest Timing: Before 1st Feb in the year of harvest
Water Volumes: 200 – 1000 L/ha
Spray Quality: MEDIUM or COARSE as defined by the BCPC
LERAP: None
 
 
For the Control of Grassweeds and Broad-leaved Weeds in Oilseed Rape
Best Use Advice for OSR

Use full rate of 1.7 L/ha for difficult blackgrass situations;

 May be applied at 1.0 L/ha or 1.4 L/ha to suit weed size and spectrum (see table below) ;

Do not make more than one application of Kerb Flo 500 within 9 months to the same area of land ;

Kerb Flo 500 should not be used on soils containing >10% organic matter – To avoid run-off, applications should be made to a firm clod-free seedbed;

Apply from 1st October when the crop has 3 true leaves ;

Kerb Flo 500 is best applied when soil temperatures at 10 cm reach 10ºC and are falling and where there is sufficient moisture in the soil surface layer for plant uptake – Optimal conditions are monitored via Kerb weather data http://uk.dowagro.com/#kerb ;

Water Protection: Ensure at least 4 of the following are met before application: – Field drains not running and not likely for 7 days or no field drains – Field slope less than 5% – Not bordered by a watercourse or field has a 6m grass buffer strip – Not sub-soiled below plough layer – Not mole drained in the past 6 months – No risk of rain in the next 48 hours

TANK MIXING

 Where populations of blackgrass and/or volunteer cereals exceed 50 per m2 apply Kerb Flo as part of a programme following or in tank mix with an effective approved graminicide, e.g. Laser at 1.0 L/ha – Refer to http://uk.dowagro.com/tank-mix-information/ for further information on compatible tank mix partners

KEY BENEFITS

 Controls all the main grassweeds including blackgrass, ryegrass, wild oats, brome, AMG and volunteer cereals

Control of key broad-leaved weeds including chickweed and speedwells

No known weed resistance – use Kerb Flo 500 to help clean up key weeds across the rotation

Trustworthy formulation from Dow AgroSciences with patented traceability protection against counterfeiting.

For the Control of Grassweeds and Broad-leaved Weeds in Winter Bean
Best Use Advice for Field Beans

 In winter beans, use Kerb Flo 500 at its maximum rate of 1.7 L/ha ;

Apply Kerb Flo 500 as a pre-emergence within 7 days of drilling ;

Do not make more than one application of Kerb Flo 500 within 9 months to the same area of land ;

Soil type restrictions: – Kerb Flo 500 should not be used on soils containing >10% organic matter – Do not use on winter field beans grown in sands, very light soils or light soils – Apply only to winter beans grown on medium or heavy soils – To avoid run-off, applications should be made to a firm clod free seedbed.

TANK MIXING

Kerb Flo 500 is compatible with the following herbicides: – Centium 360 CS, Cinder (EAMU) Sprayable under continuous agitation, Defy (EAMU), Nirvana, Rosate, Stomp Aqua* (EAMU) Sprayable under continuous agitation *0.8 L/ha Kerb Flo 500 + 2 L/ha Stomp 400 equates to 1.75 L/ha Stomp Aqua OR 1.7 L/ha Kerb Flo 500 + 1.5 L/ha Stomp 400 equates to 1.3 L/ha Stomp Aqua.

KEY BENEFITS

Can be used on all varieties of winter beans ;

No known weed resistance – use Kerb Flo 500 to help clean up key weeds across the rotation;

 Proven, trustworthy formulation with patented traceability protection against counterfeiting.

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.
Other Specific Restrictions:
THIS PRODUCT MAY ONLY BE APPLIED TO EDIBLE CROPS BETWEEN 1stOCTOBER AND THE SPECIFIED LATEST TIME OF APPLICATION.
DO NOT HARVEST CROPS FOR HUMAN OR ANIMAL CONSUMPTION FOR AT LEAST 6 WEEKS AFTER LAST APPLICATION. READ THE LABEL BEFORE USE. USING THIS PRODUCT IN A MANNER THAT IS INCONSISTENT WITH THE LABEL MAY BE AN OFFENCE. FOLLOW THE CODE OF PRACTICE FOR USING PLANT PROTECTION PRODUCTS.
WARNINGS
Take care to avoid local overdosing. Do not make more than one application of KERB FLO 500 within 9 months to the same area of land.
SOIL TYPES
KERB FLO 500 can be used on all soil types with the following exceptions:
1. Do not use on soils containing more than 10% organic matter.
2. Do not use on winter field beans grown in sands, very light soils or light soils
 
SOIL TEXTURE (85 System)
Textural Group:Sands 
Textural class:Coarse sand, Sand, Fine sand, Loamy coarse sand
 
Textural Group:Very Light Soils 
Textural class:Loamy sand, Loamy fine sand, Coarse sandy loam
 
Textural Group:Light Soils 
Textural class:Sandy loam, Fine sandy loam, Sandy silt loam, Silt loam (85)
 
Textural Group:Medium Soils 
Textural class:Sandy clay loam, Clay loam, Silty clay loam
 
Textural Group:Heavy Soils 
Textural class:Sandy clay, Clay, Silty clay
 
SOIL AND WEATHER CONDITIONS
KERB FLO 500 requires moisture for root uptake. Best residual action is obtained in moist soils of fine tilth. KERB FLO 500 can be applied under frosty conditions but should not be used where run-off from the soil surface is likely. Best results are achieved when growth of weeds (especially blackgrass and volunteer cereals) is slow, but transpiration continues. In mild autumns/winters, emerged weeds may take longer to be controlled, the residual activity of KERB FLO 500 will be shortened and overall control may be reduced. The efficacy of KERB FLO 500 may be reduced in organic soils and in the presence of excessive surface organic debris, burnt straw, ash, or ploughed-up turf. In winter field beans ensure a firm seedbed before spraying.
 
RESISTANCE
Strains of some annual grasses (e.g. blackgrass, wild-oats, 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. Guidelines have been produced by the Weed Resistance Action Group and copies are available from the HGCA, CPA, your distributor, crop adviser or product manufacturer.
 
CROP INFORMATION
Note: Specific application information for each crop is contained in the Crop Recommendation Tables that follow.
WINTER OILSEED RAPE
KERB FLO 500 can be applied after the use of an approved specific graminicide applied in accordance with the manufacturer’s recommendations.
 
WATER VOLUMES
Apply KERB FLO 500 in 200 to 1000 litres of water per hectare. Ensure good ground cover.
 
APPLICATION EQUIPMENT
Application may be made through a ground crop sprayer. Do not apply though broadcast air-assisted sprayer.
 
 CROP RECOMMENDATION TABLES
WINTER OILSEED RAPE
Rate of Use:1.4 litres/ha
Weed Species:Annual meadow-grass, barren brome, volunteer cereals, wild-oat 
Stage of Weed Growth( Germinating /Up to 2 leaf /Established):S/S/S
Time of Year:1st October to 31st Januar
Timing Stage of Crop: As soon as possible after 3rd true leaf stage. Crop selectivity is by depth protection. Factors which cause shallow rooting may reduce crop selectivity.
Soil Type (Soil Texture (85 System)):All soils with less than 10% organic matter.
 
Rate of Use:1.4 litres/ha
Weed Species:Common chickweed 
Stage of Weed Growth( Germinating /Up to 2 leaf /Established):S/S/S
Time of Year:1st October to 31st Januar
Timing Stage of Crop: As soon as possible after 3rd true leaf stage. Crop selectivity is by depth protection. Factors which cause shallow rooting may reduce crop selectivity.
Soil Type (Soil Texture (85 System)):All soils with less than 10% organic matter.
 
Weed Species:Blackgrass 
Stage of Weed Growth( Germinating /Up to 2 leaf /Established):S /S/ MS
Time of Year:1st October to 31st Januar
Timing Stage of Crop: As soon as possible after 3rd true leaf stage. Crop selectivity is by depth protection. Factors which cause shallow rooting may reduce crop selectivity.
Soil Type (Soil Texture (85 System)):All soils with less than 10% organic matter.
Rate of Use:1.4 litres/ha
 
 
Weed Species:Black-bindweed, black nightshade, fat-hen, knotgrass, redshank, small nettle, speedwells 
Stage of Weed Growth( Germinating /Up to 2 leaf /Established):S /S /M
Time of Year:1st October to 31st Januar
Timing Stage of Crop: As soon as possible after 3rd true leaf stage. Crop selectivity is by depth protection. Factors which cause shallow rooting may reduce crop selectivity.
Soil Type (Soil Texture (85 System)):All soils with less than 10% organic matter.
Rate of Use:1.4 litres/ha
 
Weed Species:Field forget-me-not
Stage of Weed Growth( Germinating /Up to 2 leaf /Established):MS/MS/R
Time of Year:1st October to 31st Januar
Timing Stage of Crop: As soon as possible after 3rd true leaf stage. Crop selectivity is by depth protection. Factors which cause shallow rooting may reduce crop selectivity.
Soil Type (Soil Texture (85 System)):All soils with less than 10% organic matter.
Rate of Use:1.4 litres/ha
 
Weed Species:Cleavers 
Stage of Weed Growth( Germinating /Up to 2 leaf /Established):MS/ MR/ R
Time of Year:1st October to 31st Januar
Timing Stage of Crop: As soon as possible after 3rd true leaf stage. Crop selectivity is by depth protection. Factors which cause shallow rooting may reduce crop selectivity.
Soil Type (Soil Texture (85 System)):All soils with less than 10% organic matter.
Rate of Use:1.4 litres/ha
 
Rate of Use:1.0 litres/ha - Use this rate only if a specific graminicide has controlled volunteer cereals and grass weeds and chickweed is not a problem
Weed Species:Annual meadow-grass, volunteer cereals, wild-oat
Stage of Weed Growth( Germinating /Up to 2 leaf /Established):S/S/S
Time of Year:1st October to 31st Januar
Timing Stage of Crop: As soon as possible after 3rd true leaf stage. Crop selectivity is by depth protection. Factors which cause shallow rooting may reduce crop selectivity.
Soil Type (Soil Texture (85 System)):All soils with less than 10% organic matter.
 
Rate of Use:1.0 litres/ha - Use this rate only if a specific graminicide has controlled volunteer cereals and grass weeds and chickweed is not a problem
Weed Species:Black-bindweed, black nightshade, common chickweed, fat-hen, knotgrass, redshank, small nettle
Stage of Weed Growth( Germinating /Up to 2 leaf /Established):S/S/R
Time of Year:1st October to 31st Januar
Timing Stage of Crop: As soon as possible after 3rd true leaf stage. Crop selectivity is by depth protection. Factors which cause shallow rooting may reduce crop selectivity.
Soil Type (Soil Texture (85 System)):All soils with less than 10% organic matter.
 
Rate of Use:1.0 litres/ha - Use this rate only if a specific graminicide has controlled volunteer cereals and grass weeds and chickweed is not a problem
Weed Species:Speedwells 
Stage of Weed Growth( Germinating /Up to 2 leaf /Established):S /R /R
Time of Year:1st October to 31st Januar
Timing Stage of Crop: As soon as possible after 3rd true leaf stage. Crop selectivity is by depth protection. Factors which cause shallow rooting may reduce crop selectivity.
Soil Type (Soil Texture (85 System)):All soils with less than 10% organic matter.
 
Winter field beans
Rate of Use:1.7 litres/ha
Weed Species:Annual meadowgrass, barren brome, common chickweed, volunteer cereals, wild-oat
Stage of Weed Growth( Germinating /Up to 2 leaf /Established):S/S/S
Time of Year:1st October to 31st January
Timing Stage of Crop:Within 7 days after drilling but before crop emerges
Soil Type (Soil Texture (85 System)):Use only on medium or heavy soils with less than 10% organic matter
 
Rate of Use:1.7 litres/ha
Weed Species:Blackgrass 
Stage of Weed Growth( Germinating /Up to 2 leaf /Established):S /S/ M
Time of Year:1st October to 31st January
Timing Stage of Crop:Within 7 days after drilling but before crop emerges
Soil Type (Soil Texture (85 System)):Use only on medium or heavy soils with less than 10% organic matter
 
Rate of Use:1.7 litres/ha
Weed Species:Black-bindweed, black nightshade, fat-hen, knotgrass, redshank, small nettle, speedwells
Stage of Weed Growth( Germinating /Up to 2 leaf /Established):S/S /MR
Time of Year:1st October to 31st January
Timing Stage of Crop:Within 7 days after drilling but before crop emerges
Soil Type (Soil Texture (85 System)):Use only on medium or heavy soils with less than 10% organic matter
 
Rate of Use:1.7 litres/ha
Weed Species:Cleavers 
Stage of Weed Growth( Germinating /Up to 2 leaf /Established):MS /MR /R
Time of Year:1st October to 31st January
Timing Stage of Crop:Within 7 days after drilling but before crop emerges
Soil Type (Soil Texture (85 System)):Use only on medium or heavy soils with less than 10% organic matter
 
 
(S = Susceptible MS = Moderately susceptible MR = Moderately resistant R = Resistant)
 
FOLLOWING CROPS
The number of weeks which must elapse between the last application of KERB FLO 500 and drilling or planting of the following crop is shown in the table below:
 
Following crops:Lettuce
Rate of KERB FLO 500 applied to previous crop:1.7 litres/ha
Date KERB FLO 500 applied to previous crop. 1st August – 31st January:0 weeks
 
Following crops:Field beans, broad beans, peas, chicory, radish, clover, lucerne
Rate of KERB FLO 500 applied to previous crop:1.7 litres/ha
Date KERB FLO 500 applied to previous crop. 1st August – 31st January:10 weeks
 
Following crops:Brassicas, leeks, onions , parsley, parsnips, celery, oilseed rape, strawberries
Rate of KERB FLO 500 applied to previous crop:1.7 litres/ha
Date KERB FLO 500 applied to previous crop. 1st August – 31st January:25 weeks or plant/sow after/15th June whichever occurs sooner.
 
Following crops:Cereals and grasses 
Rate of KERB FLO 500 applied to previous crop:1.7 litres/ha
Date KERB FLO 500 applied to previous crop. 1st August – 31st January:30 weeks
 
Following crops:Any other crop
Rate of KERB FLO 500 applied to previous crop:1.7 litres/ha
Date KERB FLO 500 applied to previous crop. 1st August – 31st January:40 weeks
 
 
 
MIXING
Add half the required volume of water to the spray tank and begin agitation. Shake the container vigorously and add the recommended quantity of KERB FLO 500 through the filter basket. When container becomes empty, wash out with water and add the washings through the filter basket. Rinse through the filter basket and add the rest of the water. Agitate while topping up the tank and continue agitation until spraying is complete. Spray immediately: do not allow the mixture to stand. Thoroughly wash all spraying and measuring equipment with water immediately after use.
 
COMPATIBILITY
For the latest advice on tank mixes please contact Dow AgroSciences or your distributor.
 
TRADEMARK ACKNOWLEDGEMENTS
KERB is a trademark of Dow AgroSciences LLC.
 
Dow AgroSciences Conditions of Supply
All goods supplied by us are of high grade and we believe them to be suitable but, as we cannot exercise control over their storage, handling, mixing or use, or the weather conditions before, during or after application which may affect the performance of the goods, all conditions and warranties, statutory or otherwise, as to the quality or fitness for any purpose of our goods are excluded. No responsibility will be accepted by us or re-sellers for any failure in performance, damage or injury whatsoever arising from their storage, handling, application or use. These conditions cannot be varied by our staff or agents whether or not they supervise or assist in the use of such goods.
Registered for culturesRate
Winter rape1.7 l
Beans1.7 l