How to set up your sprayer for post-em herbicide applications

David Felce of Agrii and Midloe grange farm gives his advice on applications of post-emergence black-grass products such as Atlantis WG or Hamlet. Because applications at this time have two functions – to target emerged weeds and to target the soil surface with a residual component. Applications therefore need to combine both of these functions to get the best results. David favours a medium spray at this time, alternating the angling of the nozzles between forwards and straight down. The water volume will depend on the prime target from the application in particular; if the key concern are the emerged weeds then the best option would be to use a water volume of 100L delivering good coverage will give good results.