Filling a sprayer with fungicide. © Gary NaylorFilling a sprayer with fungicide. © Gary Naylor
Experts are urging cereal growers to change their fungicide programmes this year, amid rising concerns about resistance development, with septoria already 20% less sensitive to the SDHIs than it was two years ago. The current “belt-and-braces” four or five-spray approach adopted on many farms in winter wheat is driving resistance faster, warn experts, especially where the same chemistry is being used at successive timings. Their concern is based on evidence that pathogens are continuing to become less sensitive to frequently-used […]