ASTROKerb is a contact and residual herbicide delivering control of annual meadowgrass, poppy, mayweed and other grass and broad-leaved weeds in winter oilseed rape.

ASTROKerb gives excellent grassweed control, the same as Kerb® Flo 400, both of which have No Known Resistance

  • controls fop/dim/den/ALS-inhibitor resistant species
  • controls ALS resistant poppies and mayweeds
  • gives you a clean start in the following cereal crop, minimising seed return


The combination also controls broad-leaved weeds with the unique design of aminopyralid

  • works when temperatures are cold
  • binds to cellulose of the broad-leaved weed
  • active ingredient is not metabolized but released when the weed starts to grow
  • only binds to living cellulose tissue 
  • washes off trash
  • some root uptake before it breaks down harmlessly in the soil

ASTROKerb and oilseed rape straw

Do not bale or remove straw from the field unless it is to be used for burning for heat or electricity production.  The straw should be chopped and thoroughly incorporated after harvest. Do not feed animals with treated straw, or use it for animal bedding, composting or mulching.

To optimise ASTROKerb’s performance, there are three areas to be considered – soil temperature, soil moisture and weed seed depth. Soil temperatures need to be cooling – around 10ºC and falling, meaning the herbicide is slower to breakdown and that longer persistence is achieved throughout the weed germination period. 

Good levels of soil moisture are needed to help the herbicide distribute evenly in the top few cms of the soil thus the soil moisture deficit should be less than 50mm and falling. Soils must not be waterlogged or saturated. Care must be taken to avoid any risk of contamination to water and importantly, all aspects of good Stewardship applied.

With regard to weed seed depth, germinating weed seed should not come from any deeper than 5cms as the black-grass would then be germinating from below the zone where the ASTROKerb concentrations are high enough to give good levels of kill.

Decades of trials and wide field experience across the UK and Ireland has demonstrated that using full-rate Kerb Flo 400 or ASTROKerb in November onwards gives the most reliable and most persistent control of grassweeds year after year.  

Tank mixes, sequences and programmes

  • Wide range of fully supported tank mix partners
  • Remember only 2 fop/dim applications can be made to an OSR crop. Consider a programmed approach with ASTROKerb to maximise volunteer cereal and other grass weed control
  • Do not apply a three way mix of graminicide + fungicide + ASTROKerb
  • However use a programmed approach to free up a tank mix opportunity of ASTROKerb with a fungicide
  • Call Dow AgroSciences’ Hotline (0800 689 8899) for the latest on tank mix , sequences and programmes involving ASTROKerb

Product Details

Active Ingredient: 500 g/litre propyzamide + 5.3 g/litre aminopyralid
Pack size: 10.0 Litres
Formulation: Suspension Concentrate
Maximum Individual Dose: Common use rate of 1.5 L/ha (1.7 L/ha – the blackgrass rate)
Maximum Total Dose: 1 per crop
Latest Timing: Before 1st Feb in the year of harvest
Water Volumes: 200 – 300 L/ha
Spray Quality: MEDIUM as defined by BCPC