Some valuable pesticides are being considered for the second priority substances list under the Water Framework Directive
Growers should adopt new SDHI fungicides for their disease control and yield responses, while any physiological benefits from them should be viewed as adding to the robustness of the products, Bill Clark, director of Broom's Barn Research Station said.
Oilseed rape yields could be hit by widespread turnip yellows virus infections this summer, Mark Stevens, head of crop protection at Broom's Barn Research Station, said.
Oilseed rape crops should be checked for light leaf spot infections from the end of January after the disease hit record levels in spring 2011, Peter Gladders, a plant pathologist at ADAS, warned agronomists at the AICC conference.
New SDHI fungicides were giving around an extra 10% yield response in wheat over triazole fungicide programmes in Irish trials last season, Tom McCabe, a lecturer at University College, Dublin, told AICC agronomists.
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