Pastor Trio®

Pastor Trio is a selective grassland herbicide that delivers broad spectrum weed control of docks, thistles & buttercups in established grassland and also key broadleaved weeds in new sown leys and maize.

  • 3 actives delivering effective translocation and wide spectrum of weed control
  •  Controls many weeds such as chickweed, fat-hen, mayweeds, buttercups, docks and thistles
  • Convenient size pack which at 2 L/ha treats 1.5 ha (3.7 acres)
  • Good grass safety
  • Great versatility with use in established grassland, new sown leys, grass grown for seed and maize
  • Rainfast in 2 hours


Pastor Trio is very safe to grass, has a grazing interval of just 7 days - this may be longer if foliage of poisonous weeds such as ragwort is present, and will be valued for it’s utility of use across crops and its control of a very wide range of weeds.

For best results apply when weeds are actively growing and have reached the optimum growth stage.

It’s common that weeds emerge at different times and different plants can be at different growth stages. In this scenario Dow AgroSciences recommend topping to even up growth of targets and applying PastorTrio to the re-growth 2 – 3 weeks later.

Product Details

Active Ingredient: 100 g/L fluroxypyr + 80 g/L clopyralid + 2.5 g/litre florasulam
Pack Size: 3.0 Litres
Formulation: Emulsifiable Concentrate
Maximum Individual Dose: 2.0 L/ha to established grassland
1.0 L/ha to new sown leys, grass for seed and maize
Maximum Total Dose: 2.0 L/ha to established grassland
1.0 L/ha to new sown leys, grass for seed and maize
Timing: 1st February to 30th September for established grassland and grass for seed
 1st February to 31st August for new sown leys
10th April to 31st May (BBCH 13-16) for maize
Water Volumes: 200-400 L/ha
Spray Quality: Medium as defined by BCPC