Ryegrass herbicide strategy

Of all the potential active ingredients for pre-emergence control, DEFY® is showing that it is an essential pre-emergence herbicide partner product for both winter and spring cereal crops. Regardless of the weather extremes seen over the last 2 autumn seasons, increasing rates of Defy increases control. We saw that application timing didn’t have an effect on the high levels of efficacy achieved this season but with the unknown impact of seasonal variation our advice would always be to apply a pre-em herbicides on as early as possible.