Apple scab control with plant resistance improving product in organic apple growing

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Apple scab control with plant resistance improving product in organic apple growing

Description

Abstract: Within the scope of a small plot trial we have tried to include the use of Alginure in a control strategy against apple scab (Venturia inaequalis) in organic agriculture rules during 2012. After application of Alginure the plant started to activate defence mechanisms. We have tested different dosages of Alginure and different numbers of applications. The best results were obtained with 5 applications at doses of 4 and 5 l/ha. Observed efficacy on leafs was 68% in case of 4 l/ha and 91% in case of 5 l/ha. Efficacy on fruits was a bit higher – 95% in case of 4 l/ha and 90% in case of 5 l/ha.

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