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Pi Pinnacle top OSR conventional

Data from United Oilseeds shows that Pi Pinnacle is the most popular conventional OSR variety this season, with the organisation saying the area sown equates to…

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Possible SDHI cross-resistance a reminder for resistance management best practice

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The AHDB Agronomy Conference raised a slight worry over SDHI septoria shifts and possible cross-resistance with two leading actives, pydiflumetofen (Miravis Plus) and isoflucypram (Vimoy). It follows laboratory tests by Niab that showed some cases of increased insensitivity to pydiflumetofen and isoflucypram. It is a small number of samples, and ADAS researcher Dr Jonathan Blake stressed that there has been no change in field performance, where both are applied with mixture partners. He sees it as a warning shot. Late season sampling revealed some isolates with reduced sensitivity to pydiflumetofen and isoflucypram. “It is only a small population but it…