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.