New SDHI fungicide offers excellent control of apple scab and powdery mildew

Apple and pear growers will have access to a new scab and mildew fungicide this coming season – Sercadis, based on the active compound fluxapyroxad.

Sercadis, from BASF, contains 300g/litre of the highly active SDHI fluxapyroxad. The dose rate is 0.25-0.30 litres/ha, depending on disease pressure. Sercadis can be used on all apple and pear varieties. It should be used preventatively, starting at the beginning of bud-burst prior to disease development and repeated at seven to ten day intervals, depending on disease pressure and seasonal weather conditions. A maximum of three applications of Sercadis per year should be used. A minimum of 35 days must elapse between the last spray and harvest.

Simon Townsend, BASF agronomy manager for fruit and vegetables, said that Sercadis gives excellent control of scab and mildew in apples and pears and has a high intrinsic activity compared to other SDHI fungicides. “In cereals, where SDHIs have been used for a number of years, fluxapyroxad has always taken the top slot. So fruit agronomists can have full confidence in their recommendations,“ he says.

Scab is one of the most prolific and common diseases of apples, particularly Cox, followed by powdery mildew. “The use of Sercadis causes no russetting or bronzing. An even more effective scab fungicide will be welcomed by growers. It also provides additional physiological effects on top-fruit and has flexible recommendations. We think it is a step forward in the fight against diseases.”

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