Seasonal weed control

Atlantis WG for the control of Black-grass and Rye-grass

Acceptable levels of control of black-grass and rye-grass will only be achieved where Atlantis WG is applied as part of an overall weed control programme, at the optimum timing, and in tank-mix with an effective residual partner in the autumn, following an effective pre-emergence treatment delivering 240g/ha of flufenacet, such as Liberator 0.6 L/ha.

The following gives guidance on appropriate herbicide programmes for grass-weed control. Where feasible, cultural control methods should be integrated into any grass-weed control programme. Resistance is becoming more widespread and so responsible stewardship is critical.

Black-grass

For black-grass, to achieve optimal levels of control, apply at the 1-3 leaf stage, when the majority of plants have emerged. However, if conditions dictate, Atlantis WG has the flexibility for application from 1 leaf to early tillering of the weed.

Rye-grass 

For rye-grass, apply Atlantis WG at 1-3 leaf up to early tillering. Due to the protracted germination period for ryegrass, where there is only a low population (<10 plants/m2) present in autumn, consider applying Atlantis WG later in the season when the majority has emerged.

However, where there is a particularly high rye-grass population (>10 plants/m2) present in the autumn, it may be appropriate to utilise the high level of foliar efficacy of Atlantis WG at the 1-3 leaf stage to reduce the autumn rye-grass population and early crop competition. In this situation late germinating rye-grass may require a follow-up treatment with a non-ALS herbicide in the spring.

It is important to note that grass-weeds emerging after Atlantis WG application may not be controlled and a subsequent treatment may be required.