Olive-green patches are first seen on the leaves that later develop into larger brown/grey leaf spots. Scab causes brown/black patches on fruit, after which scabby spots appear on the skin. Scab can significantly limit the photosynthetic capacity and can result in smaller or even fewer fruit.
We recommend spraying our Ds-mix. This changes the physiological characteristics of the leaf to the extent that activity of this fungus is reduced to less than 10%:
- 175 g Ds-Lime/100 litres water +
- 0.25 litres Cuprum/ha +
- 0.75 litres ManZincum/ha