Deter treated crops should still carry aphid protection until past the end of this month so there is little point in applying aphicides with a limited period of activity to crops that are still protected by seed dressing.

Sprays need to be targeted after the dressing runs out of steam and not before.

An overlap of protection may only provide a false sense of security.

There is unlikely to be benefit from planting Deter dressed seed from now on.

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Tillage management: planting cereals remains a priority

Tillage management: spraying