FUNGAL DISEASE CALONECTRIA PSEUDONAVICULATA (former name: Cylindrocladium buxicola)
description
This fungal disease mainly affects Buxus sempervirens. Most Buxus microphylla cultivars are less sensitive. The infestation starts with black spots on the leaves. After a few days, the affected leaves fall off in masses and turn brown. Black stripes appear on the young twigs, so-called lesions that can cause reinfection.
DAMAGE
Large bare patches with withered leaves and branches occur, which may eventually lead to the complete death of the plant.
TREATMENT
Treat with appropriate fungicides from May onwards. Pay special attention during warm, humid periods with a lot of precipitation. Affected plants can fully recover.
Control schedule for Cylindrocladium and Volutella: Consumer Belgium 2021
| Time | Product | Dosage/10 litre water | Remark |
|---|---|---|---|
| May | Ortiva Plus | 10ml | |
| June | Ortiva Plus | 10 ml | |
| July | Eminent | 7.5 ml | |
| August | Eminent | 7.5 ml | |
| September | Ortiva Plus | 10ml |
Copper-based products have a preventive effect but are less efficient. Phytosanitary legislation in Europe changes regularly. Not all products are permitted in every member state.