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Adepidyn® a new fungicide for Fusarium Head Blight and foliar disease control in wheat

Neil Glynn: Syngenta

<div>Fusarium Head Blight (FHB) is a threat to wheat production in many parts of the world. Management of FHB has been primarily achieved through a limited number of De-Methylation Inhibitor (DMI) triazole fungicides. However, robust control under field conditions can be challenging with DMI’s because they require a narrow window of application (BBCH 65) and represent only a single mode of action, which can result in high selection pressure on the pathogen and reduced efficacy upon repeated use. Adepidyn<strong><sup>®</sup></strong> fungicide is a carboximide succinate dehydrogenase inhibitor (SDHI) under development from Syngenta and the only carboximide SDHI to demonstrate high potency against diseases caused by <em>Fusarium</em>. In field trials conducted across North America, Adepidyn<strong><sup>®</sup></strong> fungicide was effective against FHB when applied from early ear emergence through flowering (BBCH 55 to BBCH 65), offering a wider application window than current DMI fungicides. Furthermore, it provides an alternative mode of action for controlling the disease, providing cereal growers a new tool to manage FHB and enhancing the sustainability of current DMI fungicides. In field trials, the performance of Adepidyn<sup>®</sup> fungicide matched or exceeded the efficacy observed by DMI fungicides, enhanced the duration of control and helped to reduce mycotoxin levels. Adepidyn<strong><sup>®</sup></strong> fungicide also has activity towards important leafspot diseases in cereals including <em>Septoria </em>sp., <em>Pyrenophora </em>sp. and powdery mildews. The wide spectrum of activity, extended window of application combined with its high potency, alternate mode of action and long residual control will make Adepidyn<strong><sup>®</sup></strong> fungicide a useful tool for FHB and foliar disease management in cereals upon registration.</div>