How much pre-em control in a bad black-grass situation?

On difficult black-grass land – Oxfordshire clay in this case – high levels of early control are essential otherwise the crop can get overrun come June. In this case a robust programme of Liberator (flufenacet + diflufenican), prosulfocarb, pendimethalin and tri-allate has given a good level of control. The cost of the programme is clearly quite high, but it is justified by the level of control on land that has a history of bad problems. So far, the land is comparatively clean compared to previous years as Ben Giles shows:

[youtube http://www.youtube.com/watch?v=c6Wc4yvTsx8?list=PLCEo_lYvJv6GsSsWLSxhvQIpSgDQXUQKg&w=560&h=315]